bri flapping with demand cirquit/igrp redistribution
> Hello all you happy people. > Router A has ospf/igrp mutual redistribution and bri > int dialing elsewhere with demand circuit. it keeps > flapping. > i followed someone's advice and created a route/map > filter to filter out bri network from igrp > redistributing back into ospf. > what the hell am i doing wrong? i know its a big > thing > that lots of people had problems with. > here's the key configs: > interface BRI0/0 > ip address 173.5.8.1 255.255.255.252 > encapsulation ppp > ip ospf demand-circuit > dialer idle-timeout 15 > dialer map ip 173.5.8.2 name R5 broadcast 8667007 > dialer map ip 173.5.8.2 name R5 broadcast 8667008 > dialer load-threshold 128 outbound > dialer-group 1 > isdn switch-type basic-dms100 > isdn spid1 9258667005 > isdn spid2 9258667006 > ppp authentication chap > ppp chap hostname CCIE > ppp multilink > > > router ospf 1 > log-adjacency-changes > area 0 authentication message-digest > area 0 range 173.5.1.0 255.255.255.0 > summary-address 173.5.10.0 255.255.255.0 > redistribute igrp 100 metric 100 subnets route-map > stuff > network 1.1.1.0 0.0.0.3 area 0 > network 173.5.1.0 0.0.0.15 area 0 > network 173.5.7.0 0.0.0.7 area 3 > network 173.5.8.0 0.0.0.3 area 3 > network 173.5.10.0 0.0.0.127 area 3 > network 173.5.17.0 0.0.0.255 area 0 > access-list 15 permit 173.5.8.0 0.0.0.3 log > route-map stuff deny 5 > match ip address 15 > ! > route-map stuff permit 10 > set tag 4 > > __ > Do You Yahoo!? > Get email at your own domain with Yahoo! Mail. > http://personal.mail.yahoo.com/ __ Do You Yahoo!? Get email at your own domain with Yahoo! Mail. http://personal.mail.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: bri flapping with demand cirquit/igrp redistribution
1. DO u have a passive interface on bri0 under router IGRP 2. I wud do this way !! when u r redisributing into OSPG .. allow only the IGRP networks ( including the network conneted with is running IGRP ) Jay when u r redistributing into - Original Message - From: "Netguy" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Friday, March 16, 2001 12:01 PM Subject: bri flapping with demand cirquit/igrp redistribution > > Hello all you happy people. > > Router A has ospf/igrp mutual redistribution and bri > > int dialing elsewhere with demand circuit. it keeps > > flapping. > > i followed someone's advice and created a route/map > > filter to filter out bri network from igrp > > redistributing back into ospf. > > what the hell am i doing wrong? i know its a big > > thing > > that lots of people had problems with. > > here's the key configs: > > interface BRI0/0 > > ip address 173.5.8.1 255.255.255.252 > > encapsulation ppp > > ip ospf demand-circuit > > dialer idle-timeout 15 > > dialer map ip 173.5.8.2 name R5 broadcast 8667007 > > dialer map ip 173.5.8.2 name R5 broadcast 8667008 > > dialer load-threshold 128 outbound > > dialer-group 1 > > isdn switch-type basic-dms100 > > isdn spid1 9258667005 > > isdn spid2 9258667006 > > ppp authentication chap > > ppp chap hostname CCIE > > ppp multilink > > > > > > router ospf 1 > > log-adjacency-changes > > area 0 authentication message-digest > > area 0 range 173.5.1.0 255.255.255.0 > > summary-address 173.5.10.0 255.255.255.0 > > redistribute igrp 100 metric 100 subnets route-map > > stuff > > network 1.1.1.0 0.0.0.3 area 0 > > network 173.5.1.0 0.0.0.15 area 0 > > network 173.5.7.0 0.0.0.7 area 3 > > network 173.5.8.0 0.0.0.3 area 3 > > network 173.5.10.0 0.0.0.127 area 3 > > network 173.5.17.0 0.0.0.255 area 0 > > access-list 15 permit 173.5.8.0 0.0.0.3 log > > route-map stuff deny 5 > > match ip address 15 > > ! > > route-map stuff permit 10 > > set tag 4 > > > > __ > > Do You Yahoo!? > > Get email at your own domain with Yahoo! Mail. > > http://personal.mail.yahoo.com/ > > > __ > Do You Yahoo!? > Get email at your own domain with Yahoo! Mail. > http://personal.mail.yahoo.com/ > > ___ > To unsubscribe from the CCIELAB list, send a message to > [EMAIL PROTECTED] with the body containing: > unsubscribe ccielab _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: bri flapping with demand cirquit/igrp redistribution
Yes i do have passive BRI on IGRP, and also, the way it is done now, it restricts ALL networks, if you look at the access-list 15 it has one statement and then explisit deny all. still not working. - Original Message - From: "Jay Chandradas" <[EMAIL PROTECTED]> To: "Netguy" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Friday, March 16, 2001 12:22 PM Subject: Re: bri flapping with demand cirquit/igrp redistribution > 1. DO u have a passive interface on bri0 under router IGRP > > 2. I wud do this way !! when u r redisributing into OSPG .. allow only the > IGRP networks ( including the network conneted with is running IGRP ) > > Jay > > when u r redistributing into > - Original Message - > From: "Netguy" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > Sent: Friday, March 16, 2001 12:01 PM > Subject: bri flapping with demand cirquit/igrp redistribution > > > > > Hello all you happy people. > > > Router A has ospf/igrp mutual redistribution and bri > > > int dialing elsewhere with demand circuit. it keeps > > > flapping. > > > i followed someone's advice and created a route/map > > > filter to filter out bri network from igrp > > > redistributing back into ospf. > > > what the hell am i doing wrong? i know its a big > > > thing > > > that lots of people had problems with. > > > here's the key configs: > > > interface BRI0/0 > > > ip address 173.5.8.1 255.255.255.252 > > > encapsulation ppp > > > ip ospf demand-circuit > > > dialer idle-timeout 15 > > > dialer map ip 173.5.8.2 name R5 broadcast 8667007 > > > dialer map ip 173.5.8.2 name R5 broadcast 8667008 > > > dialer load-threshold 128 outbound > > > dialer-group 1 > > > isdn switch-type basic-dms100 > > > isdn spid1 9258667005 > > > isdn spid2 9258667006 > > > ppp authentication chap > > > ppp chap hostname CCIE > > > ppp multilink > > > > > > > > > router ospf 1 > > > log-adjacency-changes > > > area 0 authentication message-digest > > > area 0 range 173.5.1.0 255.255.255.0 > > > summary-address 173.5.10.0 255.255.255.0 > > > redistribute igrp 100 metric 100 subnets route-map > > > stuff > > > network 1.1.1.0 0.0.0.3 area 0 > > > network 173.5.1.0 0.0.0.15 area 0 > > > network 173.5.7.0 0.0.0.7 area 3 > > > network 173.5.8.0 0.0.0.3 area 3 > > > network 173.5.10.0 0.0.0.127 area 3 > > > network 173.5.17.0 0.0.0.255 area 0 > > > access-list 15 permit 173.5.8.0 0.0.0.3 log > > > route-map stuff deny 5 > > > match ip address 15 > > > ! > > > route-map stuff permit 10 > > > set tag 4 > > > > > > __ > > > Do You Yahoo!? > > > Get email at your own domain with Yahoo! Mail. > > > http://personal.mail.yahoo.com/ > > > > > > __ > > Do You Yahoo!? > > Get email at your own domain with Yahoo! Mail. > > http://personal.mail.yahoo.com/ > > > > ___ > > To unsubscribe from the CCIELAB list, send a message to > > [EMAIL PROTECTED] with the body containing: > > unsubscribe ccielab _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: bri flapping with demand cirquit/igrp redistribution
did that, still doesn't work. i'm tagging on going out to IGRP and then blocking that tag from coming back into OSPF. still bri is flapping. what the hell? i thought we worked this problem out in groupstudy! HELP! - Original Message - From: "Jay Chandradas" <[EMAIL PROTECTED]> To: "Netguy" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Friday, March 16, 2001 12:22 PM Subject: Re: bri flapping with demand cirquit/igrp redistribution > 1. DO u have a passive interface on bri0 under router IGRP > > 2. I wud do this way !! when u r redisributing into OSPG .. allow only the > IGRP networks ( including the network conneted with is running IGRP ) > > Jay > > when u r redistributing into > - Original Message - > From: "Netguy" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > Sent: Friday, March 16, 2001 12:01 PM > Subject: bri flapping with demand cirquit/igrp redistribution > > > > > Hello all you happy people. > > > Router A has ospf/igrp mutual redistribution and bri > > > int dialing elsewhere with demand circuit. it keeps > > > flapping. > > > i followed someone's advice and created a route/map > > > filter to filter out bri network from igrp > > > redistributing back into ospf. > > > what the hell am i doing wrong? i know its a big > > > thing > > > that lots of people had problems with. > > > here's the key configs: > > > interface BRI0/0 > > > ip address 173.5.8.1 255.255.255.252 > > > encapsulation ppp > > > ip ospf demand-circuit > > > dialer idle-timeout 15 > > > dialer map ip 173.5.8.2 name R5 broadcast 8667007 > > > dialer map ip 173.5.8.2 name R5 broadcast 8667008 > > > dialer load-threshold 128 outbound > > > dialer-group 1 > > > isdn switch-type basic-dms100 > > > isdn spid1 9258667005 > > > isdn spid2 9258667006 > > > ppp authentication chap > > > ppp chap hostname CCIE > > > ppp multilink > > > > > > > > > router ospf 1 > > > log-adjacency-changes > > > area 0 authentication message-digest > > > area 0 range 173.5.1.0 255.255.255.0 > > > summary-address 173.5.10.0 255.255.255.0 > > > redistribute igrp 100 metric 100 subnets route-map > > > stuff > > > network 1.1.1.0 0.0.0.3 area 0 > > > network 173.5.1.0 0.0.0.15 area 0 > > > network 173.5.7.0 0.0.0.7 area 3 > > > network 173.5.8.0 0.0.0.3 area 3 > > > network 173.5.10.0 0.0.0.127 area 3 > > > network 173.5.17.0 0.0.0.255 area 0 > > > access-list 15 permit 173.5.8.0 0.0.0.3 log > > > route-map stuff deny 5 > > > match ip address 15 > > > ! > > > route-map stuff permit 10 > > > set tag 4 > > > > > > __ > > > Do You Yahoo!? > > > Get email at your own domain with Yahoo! Mail. > > > http://personal.mail.yahoo.com/ > > > > > > __ > > Do You Yahoo!? > > Get email at your own domain with Yahoo! Mail. > > http://personal.mail.yahoo.com/ > > > > ___ > > To unsubscribe from the CCIELAB list, send a message to > > [EMAIL PROTECTED] with the body containing: > > unsubscribe ccielab > > ___ > To unsubscribe from the CCIELAB list, send a message to > [EMAIL PROTECTED] with the body containing: > unsubscribe ccielab _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: bri flapping with demand cirquit/igrp redistribution
Will CDP keep the line up? Turn off CDP. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Bob Boone Sent: Friday, March 16, 2001 5:30 PM To: Jay Chandradas; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: bri flapping with demand cirquit/igrp redistribution Yes i do have passive BRI on IGRP, and also, the way it is done now, it restricts ALL networks, if you look at the access-list 15 it has one statement and then explisit deny all. still not working. - Original Message - From: "Jay Chandradas" <[EMAIL PROTECTED]> To: "Netguy" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Friday, March 16, 2001 12:22 PM Subject: Re: bri flapping with demand cirquit/igrp redistribution > 1. DO u have a passive interface on bri0 under router IGRP > > 2. I wud do this way !! when u r redisributing into OSPG .. allow only the > IGRP networks ( including the network conneted with is running IGRP ) > > Jay > > when u r redistributing into > - Original Message - > From: "Netguy" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > Sent: Friday, March 16, 2001 12:01 PM > Subject: bri flapping with demand cirquit/igrp redistribution > > > > > Hello all you happy people. > > > Router A has ospf/igrp mutual redistribution and bri > > > int dialing elsewhere with demand circuit. it keeps > > > flapping. > > > i followed someone's advice and created a route/map > > > filter to filter out bri network from igrp > > > redistributing back into ospf. > > > what the hell am i doing wrong? i know its a big > > > thing > > > that lots of people had problems with. > > > here's the key configs: > > > interface BRI0/0 > > > ip address 173.5.8.1 255.255.255.252 > > > encapsulation ppp > > > ip ospf demand-circuit > > > dialer idle-timeout 15 > > > dialer map ip 173.5.8.2 name R5 broadcast 8667007 > > > dialer map ip 173.5.8.2 name R5 broadcast 8667008 > > > dialer load-threshold 128 outbound > > > dialer-group 1 > > > isdn switch-type basic-dms100 > > > isdn spid1 9258667005 > > > isdn spid2 9258667006 > > > ppp authentication chap > > > ppp chap hostname CCIE > > > ppp multilink > > > > > > > > > router ospf 1 > > > log-adjacency-changes > > > area 0 authentication message-digest > > > area 0 range 173.5.1.0 255.255.255.0 > > > summary-address 173.5.10.0 255.255.255.0 > > > redistribute igrp 100 metric 100 subnets route-map > > > stuff > > > network 1.1.1.0 0.0.0.3 area 0 > > > network 173.5.1.0 0.0.0.15 area 0 > > > network 173.5.7.0 0.0.0.7 area 3 > > > network 173.5.8.0 0.0.0.3 area 3 > > > network 173.5.10.0 0.0.0.127 area 3 > > > network 173.5.17.0 0.0.0.255 area 0 > > > access-list 15 permit 173.5.8.0 0.0.0.3 log > > > route-map stuff deny 5 > > > match ip address 15 > > > ! > > > route-map stuff permit 10 > > > set tag 4 > > > > > > __ > > > Do You Yahoo!? > > > Get email at your own domain with Yahoo! Mail. > > > http://personal.mail.yahoo.com/ > > > > > > __ > > Do You Yahoo!? > > Get email at your own domain with Yahoo! Mail. > > http://personal.mail.yahoo.com/ > > > > ___ > > To unsubscribe from the CCIELAB list, send a message to > > [EMAIL PROTECTED] with the body containing: > > unsubscribe ccielab _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: bri flapping with demand cirquit/igrp redistribution
I am not sure CDP will keep the line up ? And ur interesting traffic is permit ip any any . I dont think CDP will keep the line up. When u do a debug ip pack.. u can nvr see CDP.. CDP is layer 2. my 0.02 - Original Message - From: "Chris Larson" <[EMAIL PROTECTED]> To: "Bob Boone" <[EMAIL PROTECTED]>; "Jay Chandradas" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Friday, March 23, 2001 2:40 PM Subject: RE: bri flapping with demand cirquit/igrp redistribution > Will CDP keep the line up? Turn off CDP. > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > Bob Boone > Sent: Friday, March 16, 2001 5:30 PM > To: Jay Chandradas; [EMAIL PROTECTED]; [EMAIL PROTECTED] > Subject: Re: bri flapping with demand cirquit/igrp redistribution > > > Yes i do have passive BRI on IGRP, and also, the way it is done now, it > restricts ALL networks, if you look at the access-list 15 it has one > statement and then explisit deny all. > still not working. > > - Original Message - > From: "Jay Chandradas" <[EMAIL PROTECTED]> > To: "Netguy" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; > <[EMAIL PROTECTED]> > Sent: Friday, March 16, 2001 12:22 PM > Subject: Re: bri flapping with demand cirquit/igrp redistribution > > > > 1. DO u have a passive interface on bri0 under router IGRP > > > > 2. I wud do this way !! when u r redisributing into OSPG .. allow only the > > IGRP networks ( including the network conneted with is running IGRP ) > > > > Jay > > > > when u r redistributing into > > - Original Message - > > From: "Netguy" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > > Sent: Friday, March 16, 2001 12:01 PM > > Subject: bri flapping with demand cirquit/igrp redistribution > > > > > > > > Hello all you happy people. > > > > Router A has ospf/igrp mutual redistribution and bri > > > > int dialing elsewhere with demand circuit. it keeps > > > > flapping. > > > > i followed someone's advice and created a route/map > > > > filter to filter out bri network from igrp > > > > redistributing back into ospf. > > > > what the hell am i doing wrong? i know its a big > > > > thing > > > > that lots of people had problems with. > > > > here's the key configs: > > > > interface BRI0/0 > > > > ip address 173.5.8.1 255.255.255.252 > > > > encapsulation ppp > > > > ip ospf demand-circuit > > > > dialer idle-timeout 15 > > > > dialer map ip 173.5.8.2 name R5 broadcast 8667007 > > > > dialer map ip 173.5.8.2 name R5 broadcast 8667008 > > > > dialer load-threshold 128 outbound > > > > dialer-group 1 > > > > isdn switch-type basic-dms100 > > > > isdn spid1 9258667005 > > > > isdn spid2 9258667006 > > > > ppp authentication chap > > > > ppp chap hostname CCIE > > > > ppp multilink > > > > > > > > > > > > router ospf 1 > > > > log-adjacency-changes > > > > area 0 authentication message-digest > > > > area 0 range 173.5.1.0 255.255.255.0 > > > > summary-address 173.5.10.0 255.255.255.0 > > > > redistribute igrp 100 metric 100 subnets route-map > > > > stuff > > > > network 1.1.1.0 0.0.0.3 area 0 > > > > network 173.5.1.0 0.0.0.15 area 0 > > > > network 173.5.7.0 0.0.0.7 area 3 > > > > network 173.5.8.0 0.0.0.3 area 3 > > > > network 173.5.10.0 0.0.0.127 area 3 > > > > network 173.5.17.0 0.0.0.255 area 0 > > > > access-list 15 permit 173.5.8.0 0.0.0.3 log > > > > route-map stuff deny 5 > > > > match ip address 15 > > > > ! > > > > route-map stuff permit 10 > > > > set tag 4 > > > > > > > > __ > > > > Do You Yahoo!? > > > > Get email at your own domain with Yahoo! Mail. > > > > http://personal.mail.yahoo.com/ > > > > > > > > > __ > > > Do You Yahoo!? > > > Get email at your own domain with Yahoo! Mail. > > > http://personal.mail.yahoo.com/ > > > > > > ___ > > > To unsubscribe from the CCIELAB list, send a message to > > > [EMAIL PROTECTED] with the body containing: > > > unsubscribe ccielab > > > _ > Do You Yahoo!? > Get your free @yahoo.com address at http://mail.yahoo.com > > _ > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: bri flapping with demand cirquit/igrp redistribution
I think you normally disable CDP in dialup lines for efficiency. Leah -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Jay Chandradas Sent: Friday, March 23, 2001 2:57 PM To: Chris Larson; Bob Boone; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: bri flapping with demand cirquit/igrp redistribution I am not sure CDP will keep the line up ? And ur interesting traffic is permit ip any any . I dont think CDP will keep the line up. When u do a debug ip pack.. u can nvr see CDP.. CDP is layer 2. my 0.02 - Original Message - From: "Chris Larson" <[EMAIL PROTECTED]> To: "Bob Boone" <[EMAIL PROTECTED]>; "Jay Chandradas" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Friday, March 23, 2001 2:40 PM Subject: RE: bri flapping with demand cirquit/igrp redistribution > Will CDP keep the line up? Turn off CDP. > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > Bob Boone > Sent: Friday, March 16, 2001 5:30 PM > To: Jay Chandradas; [EMAIL PROTECTED]; [EMAIL PROTECTED] > Subject: Re: bri flapping with demand cirquit/igrp redistribution > > > Yes i do have passive BRI on IGRP, and also, the way it is done now, it > restricts ALL networks, if you look at the access-list 15 it has one > statement and then explisit deny all. > still not working. > > - Original Message - > From: "Jay Chandradas" <[EMAIL PROTECTED]> > To: "Netguy" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; > <[EMAIL PROTECTED]> > Sent: Friday, March 16, 2001 12:22 PM > Subject: Re: bri flapping with demand cirquit/igrp redistribution > > > > 1. DO u have a passive interface on bri0 under router IGRP > > > > 2. I wud do this way !! when u r redisributing into OSPG .. allow only the > > IGRP networks ( including the network conneted with is running IGRP ) > > > > Jay > > > > when u r redistributing into > > - Original Message - > > From: "Netguy" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > > Sent: Friday, March 16, 2001 12:01 PM > > Subject: bri flapping with demand cirquit/igrp redistribution > > > > > > > > Hello all you happy people. > > > > Router A has ospf/igrp mutual redistribution and bri > > > > int dialing elsewhere with demand circuit. it keeps > > > > flapping. > > > > i followed someone's advice and created a route/map > > > > filter to filter out bri network from igrp > > > > redistributing back into ospf. > > > > what the hell am i doing wrong? i know its a big > > > > thing > > > > that lots of people had problems with. > > > > here's the key configs: > > > > interface BRI0/0 > > > > ip address 173.5.8.1 255.255.255.252 > > > > encapsulation ppp > > > > ip ospf demand-circuit > > > > dialer idle-timeout 15 > > > > dialer map ip 173.5.8.2 name R5 broadcast 8667007 > > > > dialer map ip 173.5.8.2 name R5 broadcast 8667008 > > > > dialer load-threshold 128 outbound > > > > dialer-group 1 > > > > isdn switch-type basic-dms100 > > > > isdn spid1 9258667005 > > > > isdn spid2 9258667006 > > > > ppp authentication chap > > > > ppp chap hostname CCIE > > > > ppp multilink > > > > > > > > > > > > router ospf 1 > > > > log-adjacency-changes > > > > area 0 authentication message-digest > > > > area 0 range 173.5.1.0 255.255.255.0 > > > > summary-address 173.5.10.0 255.255.255.0 > > > > redistribute igrp 100 metric 100 subnets route-map > > > > stuff > > > > network 1.1.1.0 0.0.0.3 area 0 > > > > network 173.5.1.0 0.0.0.15 area 0 > > > > network 173.5.7.0 0.0.0.7 area 3 > > > > network 173.5.8.0 0.0.0.3 area 3 > > > > network 173.5.10.0 0.0.0.127 area 3 > > > > network 173.5.17.0 0.0.0.255 area 0 > > > > access-list 15 permit 173.5.8.0 0.0.0.3 log > > > > route-map stuff deny 5 > > > > match ip address 15 > > > > ! > > > > route-map stuff permit 10 > > > > set tag 4 > > > > > > > > __ > > > > Do You Yahoo!? > > > > Get email at your own domain with Yahoo! Mail. > > > > http://personal.mail.yahoo.com/ &g
Re: bri flapping with demand cirquit/igrp redistribution
Also check the BRI interface and see if you see IPCDP, it should disapper when you no cdp en! Patrick - Original Message - From: "Leah Lynch" <[EMAIL PROTECTED]> To: "'Jay Chandradas'" <[EMAIL PROTECTED]>; "'Chris Larson'" <[EMAIL PROTECTED]>; "'Bob Boone'" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Friday, March 23, 2001 7:45 PM Subject: RE: bri flapping with demand cirquit/igrp redistribution > I think you normally disable CDP in dialup lines for efficiency. > > Leah > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > Jay Chandradas > Sent: Friday, March 23, 2001 2:57 PM > To: Chris Larson; Bob Boone; [EMAIL PROTECTED]; > [EMAIL PROTECTED] > Subject: Re: bri flapping with demand cirquit/igrp redistribution > > > > > I am not sure CDP will keep the line up ? And ur interesting traffic is > permit ip any any . I dont think CDP will keep the line up. When u do a > debug ip pack.. u can nvr see CDP.. CDP is layer 2. > > my 0.02 > > - Original Message - > From: "Chris Larson" <[EMAIL PROTECTED]> > To: "Bob Boone" <[EMAIL PROTECTED]>; "Jay Chandradas" <[EMAIL PROTECTED]>; > <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > Sent: Friday, March 23, 2001 2:40 PM > Subject: RE: bri flapping with demand cirquit/igrp redistribution > > > > Will CDP keep the line up? Turn off CDP. > > > > -Original Message- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > > Bob Boone > > Sent: Friday, March 16, 2001 5:30 PM > > To: Jay Chandradas; [EMAIL PROTECTED]; [EMAIL PROTECTED] > > Subject: Re: bri flapping with demand cirquit/igrp redistribution > > > > > > Yes i do have passive BRI on IGRP, and also, the way it is done now, it > > restricts ALL networks, if you look at the access-list 15 it has one > > statement and then explisit deny all. > > still not working. > > > > - Original Message - > > From: "Jay Chandradas" <[EMAIL PROTECTED]> > > To: "Netguy" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; > > <[EMAIL PROTECTED]> > > Sent: Friday, March 16, 2001 12:22 PM > > Subject: Re: bri flapping with demand cirquit/igrp redistribution > > > > > > > 1. DO u have a passive interface on bri0 under router IGRP > > > > > > 2. I wud do this way !! when u r redisributing into OSPG .. allow only > the > > > IGRP networks ( including the network conneted with is running IGRP ) > > > > > > Jay > > > > > > when u r redistributing into > > > - Original Message - > > > From: "Netguy" <[EMAIL PROTECTED]> > > > To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > > > Sent: Friday, March 16, 2001 12:01 PM > > > Subject: bri flapping with demand cirquit/igrp redistribution > > > > > > > > > > > Hello all you happy people. > > > > > Router A has ospf/igrp mutual redistribution and bri > > > > > int dialing elsewhere with demand circuit. it keeps > > > > > flapping. > > > > > i followed someone's advice and created a route/map > > > > > filter to filter out bri network from igrp > > > > > redistributing back into ospf. > > > > > what the hell am i doing wrong? i know its a big > > > > > thing > > > > > that lots of people had problems with. > > > > > here's the key configs: > > > > > interface BRI0/0 > > > > > ip address 173.5.8.1 255.255.255.252 > > > > > encapsulation ppp > > > > > ip ospf demand-circuit > > > > > dialer idle-timeout 15 > > > > > dialer map ip 173.5.8.2 name R5 broadcast 8667007 > > > > > dialer map ip 173.5.8.2 name R5 broadcast 8667008 > > > > > dialer load-threshold 128 outbound > > > > > dialer-group 1 > > > > > isdn switch-type basic-dms100 > > > > > isdn spid1 9258667005 > > > > > isdn spid2 9258667006 > > > > > ppp authentication chap > > > > > ppp chap hostname CCIE > > > > > ppp multilink > > > > > > > > > > > > > > > router ospf 1 > > > > > log-adjacency-changes > &g
RE: bri flapping with demand cirquit/igrp redistribution
Try remove the "log" from the access-list 15 associated with the route-map stuff. Also, you do not need the summary-address under OSPF. -Ya -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Patrick Murphy Sent: Friday, March 23, 2001 5:04 PM To: Leah Lynch; 'Jay Chandradas'; 'Chris Larson'; 'Bob Boone'; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: bri flapping with demand cirquit/igrp redistribution Also check the BRI interface and see if you see IPCDP, it should disapper when you no cdp en! Patrick - Original Message - From: "Leah Lynch" <[EMAIL PROTECTED]> To: "'Jay Chandradas'" <[EMAIL PROTECTED]>; "'Chris Larson'" <[EMAIL PROTECTED]>; "'Bob Boone'" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Friday, March 23, 2001 7:45 PM Subject: RE: bri flapping with demand cirquit/igrp redistribution > I think you normally disable CDP in dialup lines for efficiency. > > Leah > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > Jay Chandradas > Sent: Friday, March 23, 2001 2:57 PM > To: Chris Larson; Bob Boone; [EMAIL PROTECTED]; > [EMAIL PROTECTED] > Subject: Re: bri flapping with demand cirquit/igrp redistribution > > > > > I am not sure CDP will keep the line up ? And ur interesting traffic is > permit ip any any . I dont think CDP will keep the line up. When u do a > debug ip pack.. u can nvr see CDP.. CDP is layer 2. > > my 0.02 > > - Original Message - > From: "Chris Larson" <[EMAIL PROTECTED]> > To: "Bob Boone" <[EMAIL PROTECTED]>; "Jay Chandradas" <[EMAIL PROTECTED]>; > <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > Sent: Friday, March 23, 2001 2:40 PM > Subject: RE: bri flapping with demand cirquit/igrp redistribution > > > > Will CDP keep the line up? Turn off CDP. > > > > -Original Message- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > > Bob Boone > > Sent: Friday, March 16, 2001 5:30 PM > > To: Jay Chandradas; [EMAIL PROTECTED]; [EMAIL PROTECTED] > > Subject: Re: bri flapping with demand cirquit/igrp redistribution > > > > > > Yes i do have passive BRI on IGRP, and also, the way it is done now, it > > restricts ALL networks, if you look at the access-list 15 it has one > > statement and then explisit deny all. > > still not working. > > > > - Original Message - > > From: "Jay Chandradas" <[EMAIL PROTECTED]> > > To: "Netguy" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; > > <[EMAIL PROTECTED]> > > Sent: Friday, March 16, 2001 12:22 PM > > Subject: Re: bri flapping with demand cirquit/igrp redistribution > > > > > > > 1. DO u have a passive interface on bri0 under router IGRP > > > > > > 2. I wud do this way !! when u r redisributing into OSPG .. allow only > the > > > IGRP networks ( including the network conneted with is running IGRP ) > > > > > > Jay > > > > > > when u r redistributing into > > > - Original Message - > > > From: "Netguy" <[EMAIL PROTECTED]> > > > To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > > > Sent: Friday, March 16, 2001 12:01 PM > > > Subject: bri flapping with demand cirquit/igrp redistribution > > > > > > > > > > > Hello all you happy people. > > > > > Router A has ospf/igrp mutual redistribution and bri > > > > > int dialing elsewhere with demand circuit. it keeps > > > > > flapping. > > > > > i followed someone's advice and created a route/map > > > > > filter to filter out bri network from igrp > > > > > redistributing back into ospf. > > > > > what the hell am i doing wrong? i know its a big > > > > > thing > > > > > that lots of people had problems with. > > > > > here's the key configs: > > > > > interface BRI0/0 > > > > > ip address 173.5.8.1 255.255.255.252 > > > > > encapsulation ppp > > > > > ip ospf demand-circuit > > > > > dialer idle-timeout 15 > > > > > dialer map ip 173.5.8.2 name R5 broadcast 8667007 > > > > > dialer map ip 173.5.8.2 name R5 broadcast 8667008 > > > > > dialer load-threshold 128 outbound > > > > > dialer-group 1 > >
Re: bri flapping with demand cirquit/igrp redistribution
I had this problem and moved the ip ospf demand-circuit statement to the other router and the problem went away. I was using 11.2 code on one end and 12.something on the other. Mick - Original Message - From: "Leah Lynch" <[EMAIL PROTECTED]> To: "'Jay Chandradas'" <[EMAIL PROTECTED]>; "'Chris Larson'" <[EMAIL PROTECTED]>; "'Bob Boone'" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Friday, March 23, 2001 6:15 PM Subject: RE: bri flapping with demand cirquit/igrp redistribution > I think you normally disable CDP in dialup lines for efficiency. > > Leah > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > Jay Chandradas > Sent: Friday, March 23, 2001 2:57 PM > To: Chris Larson; Bob Boone; [EMAIL PROTECTED]; > [EMAIL PROTECTED] > Subject: Re: bri flapping with demand cirquit/igrp redistribution > > > > > I am not sure CDP will keep the line up ? And ur interesting traffic is > permit ip any any . I dont think CDP will keep the line up. When u do a > debug ip pack.. u can nvr see CDP.. CDP is layer 2. > > my 0.02 > > - Original Message - > From: "Chris Larson" <[EMAIL PROTECTED]> > To: "Bob Boone" <[EMAIL PROTECTED]>; "Jay Chandradas" <[EMAIL PROTECTED]>; > <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > Sent: Friday, March 23, 2001 2:40 PM > Subject: RE: bri flapping with demand cirquit/igrp redistribution > > > > Will CDP keep the line up? Turn off CDP. > > > > -Original Message- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > > Bob Boone > > Sent: Friday, March 16, 2001 5:30 PM > > To: Jay Chandradas; [EMAIL PROTECTED]; [EMAIL PROTECTED] > > Subject: Re: bri flapping with demand cirquit/igrp redistribution > > > > > > Yes i do have passive BRI on IGRP, and also, the way it is done now, it > > restricts ALL networks, if you look at the access-list 15 it has one > > statement and then explisit deny all. > > still not working. > > > > - Original Message - > > From: "Jay Chandradas" <[EMAIL PROTECTED]> > > To: "Netguy" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; > > <[EMAIL PROTECTED]> > > Sent: Friday, March 16, 2001 12:22 PM > > Subject: Re: bri flapping with demand cirquit/igrp redistribution > > > > > > > 1. DO u have a passive interface on bri0 under router IGRP > > > > > > 2. I wud do this way !! when u r redisributing into OSPG .. allow only > the > > > IGRP networks ( including the network conneted with is running IGRP ) > > > > > > Jay > > > > > > when u r redistributing into > > > - Original Message - > > > From: "Netguy" <[EMAIL PROTECTED]> > > > To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > > > Sent: Friday, March 16, 2001 12:01 PM > > > Subject: bri flapping with demand cirquit/igrp redistribution > > > > > > > > > > > Hello all you happy people. > > > > > Router A has ospf/igrp mutual redistribution and bri > > > > > int dialing elsewhere with demand circuit. it keeps > > > > > flapping. > > > > > i followed someone's advice and created a route/map > > > > > filter to filter out bri network from igrp > > > > > redistributing back into ospf. > > > > > what the hell am i doing wrong? i know its a big > > > > > thing > > > > > that lots of people had problems with. > > > > > here's the key configs: > > > > > interface BRI0/0 > > > > > ip address 173.5.8.1 255.255.255.252 > > > > > encapsulation ppp > > > > > ip ospf demand-circuit > > > > > dialer idle-timeout 15 > > > > > dialer map ip 173.5.8.2 name R5 broadcast 8667007 > > > > > dialer map ip 173.5.8.2 name R5 broadcast 8667008 > > > > > dialer load-threshold 128 outbound > > > > > dialer-group 1 > > > > > isdn switch-type basic-dms100 > > > > > isdn spid1 9258667005 > > > > > isdn spid2 9258667006 > > > > > ppp authentication chap > > > > > ppp chap hostname CCIE > > > > > ppp multilink > > > > > > > > > > > > > > > router ospf 1 > > > > > log
RE: bri flapping with demand cirquit/igrp redistribution
Can somebody tell me how come CDP may bring the line up? As you know, it works only in layer 2 as said before. Your dialer-list works at layer 3 & 4 only. Did I miss something? :-( --- Ya Wen <[EMAIL PROTECTED]> wrote: > Try remove the "log" from the access-list 15 > associated with the route-map > stuff. Also, you do not need the summary-address > under OSPF. > > -Ya > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of > Patrick Murphy > Sent: Friday, March 23, 2001 5:04 PM > To: Leah Lynch; 'Jay Chandradas'; 'Chris Larson'; > 'Bob Boone'; > [EMAIL PROTECTED]; [EMAIL PROTECTED] > Subject: Re: bri flapping with demand cirquit/igrp > redistribution > > > Also check the BRI interface and see if you see > IPCDP, it should disapper > when you no cdp en! > > Patrick > > - Original Message - > From: "Leah Lynch" <[EMAIL PROTECTED]> > To: "'Jay Chandradas'" <[EMAIL PROTECTED]>; "'Chris > Larson'" > <[EMAIL PROTECTED]>; "'Bob Boone'" > <[EMAIL PROTECTED]>; > <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > Sent: Friday, March 23, 2001 7:45 PM > Subject: RE: bri flapping with demand cirquit/igrp > redistribution > > > > I think you normally disable CDP in dialup lines > for efficiency. > > > > Leah > > > > -Original Message- > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of > > Jay Chandradas > > Sent: Friday, March 23, 2001 2:57 PM > > To: Chris Larson; Bob Boone; [EMAIL PROTECTED]; > > [EMAIL PROTECTED] > > Subject: Re: bri flapping with demand cirquit/igrp > redistribution > > > > > > > > > > I am not sure CDP will keep the line up ? And ur > interesting traffic is > > permit ip any any . I dont think CDP will keep the > line up. When u do a > > debug ip pack.. u can nvr see CDP.. CDP is layer > 2. > > > > my 0.02 > > > > - Original Message - > > From: "Chris Larson" <[EMAIL PROTECTED]> > > To: "Bob Boone" <[EMAIL PROTECTED]>; "Jay > Chandradas" > <[EMAIL PROTECTED]>; > > <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > > Sent: Friday, March 23, 2001 2:40 PM > > Subject: RE: bri flapping with demand cirquit/igrp > redistribution > > > > > > > Will CDP keep the line up? Turn off CDP. > > > > > > -Original Message- > > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of > > > Bob Boone > > > Sent: Friday, March 16, 2001 5:30 PM > > > To: Jay Chandradas; [EMAIL PROTECTED]; > [EMAIL PROTECTED] > > > Subject: Re: bri flapping with demand > cirquit/igrp redistribution > > > > > > > > > Yes i do have passive BRI on IGRP, and also, the > way it is done now, it > > > restricts ALL networks, if you look at the > access-list 15 it has one > > > statement and then explisit deny all. > > > still not working. > > > > > > - Original Message - > > > From: "Jay Chandradas" <[EMAIL PROTECTED]> > > > To: "Netguy" <[EMAIL PROTECTED]>; > <[EMAIL PROTECTED]>; > > > <[EMAIL PROTECTED]> > > > Sent: Friday, March 16, 2001 12:22 PM > > > Subject: Re: bri flapping with demand > cirquit/igrp redistribution > > > > > > > > > > 1. DO u have a passive interface on bri0 under > router IGRP > > > > > > > > 2. I wud do this way !! when u r redisributing > into OSPG .. allow only > > the > > > > IGRP networks ( including the network conneted > with is running IGRP ) > > > > > > > > Jay > > > > > > > > when u r redistributing into > > > > - Original Message - > > > > From: "Netguy" <[EMAIL PROTECTED]> > > > > To: <[EMAIL PROTECTED]>; > <[EMAIL PROTECTED]> > > > > Sent: Friday, March 16, 2001 12:01 PM > > > > Subject: bri flapping with demand cirquit/igrp > redistribution > > > > > > > > > > > > > > Hello all you happy people. > > > > > > Router A has ospf/igrp mutual > redistribution and bri > > > > > > int dialing elsewhere with demand circuit. > it keeps > > > > > > flapping. > > > > > > i followed someone&#
RE: bri flapping with demand cirquit/igrp redistribution
It may not, I have just always disabled it on dialer links as a habit. It makes sense that it shouldn't since the dialer-list defines layer 3 traffic only. You could always put an access-list on the dialer interface permitting all traffic with the log statement to see exactly what is trying to get accross the line. It will output to the console if you are consoled in. That may help you to see what is bringing the line up. -Original Message- From: perez claude-vincent [mailto:[EMAIL PROTECTED]] Sent: Saturday, March 24, 2001 9:22 AM To: Ya Wen; Patrick Murphy; Leah Lynch; 'Jay Chandradas'; 'Chris Larson'; 'Bob Boone'; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: RE: bri flapping with demand cirquit/igrp redistribution Can somebody tell me how come CDP may bring the line up? As you know, it works only in layer 2 as said before. Your dialer-list works at layer 3 & 4 only. Did I miss something? :-( --- Ya Wen <[EMAIL PROTECTED]> wrote: > Try remove the "log" from the access-list 15 > associated with the route-map > stuff. Also, you do not need the summary-address > under OSPF. > > -Ya > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of > Patrick Murphy > Sent: Friday, March 23, 2001 5:04 PM > To: Leah Lynch; 'Jay Chandradas'; 'Chris Larson'; > 'Bob Boone'; > [EMAIL PROTECTED]; [EMAIL PROTECTED] > Subject: Re: bri flapping with demand cirquit/igrp > redistribution > > > Also check the BRI interface and see if you see > IPCDP, it should disapper > when you no cdp en! > > Patrick > > - Original Message - > From: "Leah Lynch" <[EMAIL PROTECTED]> > To: "'Jay Chandradas'" <[EMAIL PROTECTED]>; "'Chris > Larson'" > <[EMAIL PROTECTED]>; "'Bob Boone'" > <[EMAIL PROTECTED]>; > <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > Sent: Friday, March 23, 2001 7:45 PM > Subject: RE: bri flapping with demand cirquit/igrp > redistribution > > > > I think you normally disable CDP in dialup lines > for efficiency. > > > > Leah > > > > -Original Message- > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of > > Jay Chandradas > > Sent: Friday, March 23, 2001 2:57 PM > > To: Chris Larson; Bob Boone; [EMAIL PROTECTED]; > > [EMAIL PROTECTED] > > Subject: Re: bri flapping with demand cirquit/igrp > redistribution > > > > > > > > > > I am not sure CDP will keep the line up ? And ur > interesting traffic is > > permit ip any any . I dont think CDP will keep the > line up. When u do a > > debug ip pack.. u can nvr see CDP.. CDP is layer > 2. > > > > my 0.02 > > > > - Original Message - > > From: "Chris Larson" <[EMAIL PROTECTED]> > > To: "Bob Boone" <[EMAIL PROTECTED]>; "Jay > Chandradas" > <[EMAIL PROTECTED]>; > > <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > > Sent: Friday, March 23, 2001 2:40 PM > > Subject: RE: bri flapping with demand cirquit/igrp > redistribution > > > > > > > Will CDP keep the line up? Turn off CDP. > > > > > > -Original Message- > > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of > > > Bob Boone > > > Sent: Friday, March 16, 2001 5:30 PM > > > To: Jay Chandradas; [EMAIL PROTECTED]; > [EMAIL PROTECTED] > > > Subject: Re: bri flapping with demand > cirquit/igrp redistribution > > > > > > > > > Yes i do have passive BRI on IGRP, and also, the > way it is done now, it > > > restricts ALL networks, if you look at the > access-list 15 it has one > > > statement and then explisit deny all. > > > still not working. > > > > > > - Original Message - > > > From: "Jay Chandradas" <[EMAIL PROTECTED]> > > > To: "Netguy" <[EMAIL PROTECTED]>; > <[EMAIL PROTECTED]>; > > > <[EMAIL PROTECTED]> > > > Sent: Friday, March 16, 2001 12:22 PM > > > Subject: Re: bri flapping with demand > cirquit/igrp redistribution > > > > > > > > > > 1. DO u have a passive interface on bri0 under > router IGRP > > > > > > > > 2. I wud do this way !! when u r redisributing > into OSPG .. allow only > > the > > > > IGRP networks ( including the network conneted > with is running IGRP ) > > > > > > > > J
RE: bri flapping with demand cirquit/igrp redistribution
CDP may work at layer 2 but if the line is brought up because of web traffic CDP packets would then traverse the line consume a small amount of bandwidth. I have installed a few ISDN DDR VPN's without turning off CDP and never had and issue but also didn't think about the bandwidth consumption at the time. Alan -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Chris Larson Sent: Saturday, March 24, 2001 9:00 AM To: perez claude-vincent; Ya Wen; Patrick Murphy; Leah Lynch; 'Jay Chandradas'; 'Bob Boone'; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: RE: bri flapping with demand cirquit/igrp redistribution It may not, I have just always disabled it on dialer links as a habit. It makes sense that it shouldn't since the dialer-list defines layer 3 traffic only. You could always put an access-list on the dialer interface permitting all traffic with the log statement to see exactly what is trying to get accross the line. It will output to the console if you are consoled in. That may help you to see what is bringing the line up. -Original Message- From: perez claude-vincent [mailto:[EMAIL PROTECTED]] Sent: Saturday, March 24, 2001 9:22 AM To: Ya Wen; Patrick Murphy; Leah Lynch; 'Jay Chandradas'; 'Chris Larson'; 'Bob Boone'; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: RE: bri flapping with demand cirquit/igrp redistribution Can somebody tell me how come CDP may bring the line up? As you know, it works only in layer 2 as said before. Your dialer-list works at layer 3 & 4 only. Did I miss something? :-( --- Ya Wen <[EMAIL PROTECTED]> wrote: > Try remove the "log" from the access-list 15 > associated with the route-map > stuff. Also, you do not need the summary-address > under OSPF. > > -Ya > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of > Patrick Murphy > Sent: Friday, March 23, 2001 5:04 PM > To: Leah Lynch; 'Jay Chandradas'; 'Chris Larson'; > 'Bob Boone'; > [EMAIL PROTECTED]; [EMAIL PROTECTED] > Subject: Re: bri flapping with demand cirquit/igrp > redistribution > > > Also check the BRI interface and see if you see > IPCDP, it should disapper > when you no cdp en! > > Patrick > > - Original Message - > From: "Leah Lynch" <[EMAIL PROTECTED]> > To: "'Jay Chandradas'" <[EMAIL PROTECTED]>; "'Chris > Larson'" > <[EMAIL PROTECTED]>; "'Bob Boone'" > <[EMAIL PROTECTED]>; > <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > Sent: Friday, March 23, 2001 7:45 PM > Subject: RE: bri flapping with demand cirquit/igrp > redistribution > > > > I think you normally disable CDP in dialup lines > for efficiency. > > > > Leah > > > > -Original Message- > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of > > Jay Chandradas > > Sent: Friday, March 23, 2001 2:57 PM > > To: Chris Larson; Bob Boone; [EMAIL PROTECTED]; > > [EMAIL PROTECTED] > > Subject: Re: bri flapping with demand cirquit/igrp > redistribution > > > > > > > > > > I am not sure CDP will keep the line up ? And ur > interesting traffic is > > permit ip any any . I dont think CDP will keep the > line up. When u do a > > debug ip pack.. u can nvr see CDP.. CDP is layer > 2. > > > > my 0.02 > > > > - Original Message - > > From: "Chris Larson" <[EMAIL PROTECTED]> > > To: "Bob Boone" <[EMAIL PROTECTED]>; "Jay > Chandradas" > <[EMAIL PROTECTED]>; > > <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > > Sent: Friday, March 23, 2001 2:40 PM > > Subject: RE: bri flapping with demand cirquit/igrp > redistribution > > > > > > > Will CDP keep the line up? Turn off CDP. > > > > > > -Original Message- > > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of > > > Bob Boone > > > Sent: Friday, March 16, 2001 5:30 PM > > > To: Jay Chandradas; [EMAIL PROTECTED]; > [EMAIL PROTECTED] > > > Subject: Re: bri flapping with demand > cirquit/igrp redistribution > > > > > > > > > Yes i do have passive BRI on IGRP, and also, the > way it is done now, it > > > restricts ALL networks, if you look at the > access-list 15 it has one > > > statement and then explisit deny all. > > > still not working. > > > > > > - Original Message - > > > From: "Jay Chandradas" <[EMAIL PRO
Re: bri flapping with demand cirquit/igrp redistribution
it shouldn't. its layer two, and if you put dialer in debug you see that it is shown as uninteresting traffic. - Original Message - From: "perez claude-vincent" <[EMAIL PROTECTED]> To: "Ya Wen" <[EMAIL PROTECTED]>; "Patrick Murphy" <[EMAIL PROTECTED]>; "Leah Lynch" <[EMAIL PROTECTED]>; "'Jay Chandradas'" <[EMAIL PROTECTED]>; "'Chris Larson'" <[EMAIL PROTECTED]>; "'Bob Boone'" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Saturday, March 24, 2001 6:22 AM Subject: RE: bri flapping with demand cirquit/igrp redistribution > Can somebody tell me how come CDP may bring the line > up? As you know, it works only in layer 2 as said > before. Your dialer-list works at layer 3 & 4 only. > > Did I miss something? :-( > > > > --- Ya Wen <[EMAIL PROTECTED]> wrote: > > Try remove the "log" from the access-list 15 > > associated with the route-map > > stuff. Also, you do not need the summary-address > > under OSPF. > > > > -Ya > > > > -Original Message- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED]]On Behalf Of > > Patrick Murphy > > Sent: Friday, March 23, 2001 5:04 PM > > To: Leah Lynch; 'Jay Chandradas'; 'Chris Larson'; > > 'Bob Boone'; > > [EMAIL PROTECTED]; [EMAIL PROTECTED] > > Subject: Re: bri flapping with demand cirquit/igrp > > redistribution > > > > > > Also check the BRI interface and see if you see > > IPCDP, it should disapper > > when you no cdp en! > > > > Patrick > > > > - Original Message - > > From: "Leah Lynch" <[EMAIL PROTECTED]> > > To: "'Jay Chandradas'" <[EMAIL PROTECTED]>; "'Chris > > Larson'" > > <[EMAIL PROTECTED]>; "'Bob Boone'" > > <[EMAIL PROTECTED]>; > > <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > > Sent: Friday, March 23, 2001 7:45 PM > > Subject: RE: bri flapping with demand cirquit/igrp > > redistribution > > > > > > > I think you normally disable CDP in dialup lines > > for efficiency. > > > > > > Leah > > > > > > -Original Message- > > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED]]On Behalf Of > > > Jay Chandradas > > > Sent: Friday, March 23, 2001 2:57 PM > > > To: Chris Larson; Bob Boone; [EMAIL PROTECTED]; > > > [EMAIL PROTECTED] > > > Subject: Re: bri flapping with demand cirquit/igrp > > redistribution > > > > > > > > > > > > > > > I am not sure CDP will keep the line up ? And ur > > interesting traffic is > > > permit ip any any . I dont think CDP will keep the > > line up. When u do a > > > debug ip pack.. u can nvr see CDP.. CDP is layer > > 2. > > > > > > my 0.02 > > > > > > - Original Message - > > > From: "Chris Larson" <[EMAIL PROTECTED]> > > > To: "Bob Boone" <[EMAIL PROTECTED]>; "Jay > > Chandradas" > > <[EMAIL PROTECTED]>; > > > <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > > > Sent: Friday, March 23, 2001 2:40 PM > > > Subject: RE: bri flapping with demand cirquit/igrp > > redistribution > > > > > > > > > > Will CDP keep the line up? Turn off CDP. > > > > > > > > -Original Message- > > > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED]]On Behalf Of > > > > Bob Boone > > > > Sent: Friday, March 16, 2001 5:30 PM > > > > To: Jay Chandradas; [EMAIL PROTECTED]; > > [EMAIL PROTECTED] > > > > Subject: Re: bri flapping with demand > > cirquit/igrp redistribution > > > > > > > > > > > > Yes i do have passive BRI on IGRP, and also, the > > way it is done now, it > > > > restricts ALL networks, if you look at the > > access-list 15 it has one > > > > statement and then explisit deny all. > > > > still not working. > > > > > > > > - Original Message - > > > > From: "Jay Chandradas" <[EMAIL PROTECTED]> > > > > To: "Netguy" <[EMAIL PROTECTED]>; > > <[EMAIL PROTECTED]>; > > > > <[EMAIL PROTECTED]> > > > > Sent: Friday, March 16, 2001 12:22 PM
Re: bri flapping with demand cirquit/igrp redistribution
James, On your access list 15 try changing the mask to .255 instead of .3, even though you are using a 30 bit mask at the interface. This has worked for me before. jer At 09:59 AM 3/24/2001 -0800, James wrote: >it shouldn't. its layer two, and if you put dialer in debug you see that it >is shown as uninteresting traffic. >- Original Message - >From: "perez claude-vincent" <[EMAIL PROTECTED]> >To: "Ya Wen" <[EMAIL PROTECTED]>; "Patrick Murphy" ><[EMAIL PROTECTED]>; "Leah Lynch" <[EMAIL PROTECTED]>; "'Jay >Chandradas'" <[EMAIL PROTECTED]>; "'Chris Larson'" <[EMAIL PROTECTED]>; >"'Bob Boone'" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; ><[EMAIL PROTECTED]> >Sent: Saturday, March 24, 2001 6:22 AM >Subject: RE: bri flapping with demand cirquit/igrp redistribution > > >> Can somebody tell me how come CDP may bring the line >> up? As you know, it works only in layer 2 as said >> before. Your dialer-list works at layer 3 & 4 only. >> >> Did I miss something? :-( >> >> >> >> --- Ya Wen <[EMAIL PROTECTED]> wrote: >> > Try remove the "log" from the access-list 15 >> > associated with the route-map >> > stuff. Also, you do not need the summary-address >> > under OSPF. >> > >> > -Ya >> > >> > -Original Message- >> > From: [EMAIL PROTECTED] >> > [mailto:[EMAIL PROTECTED]]On Behalf Of >> > Patrick Murphy >> > Sent: Friday, March 23, 2001 5:04 PM >> > To: Leah Lynch; 'Jay Chandradas'; 'Chris Larson'; >> > 'Bob Boone'; >> > [EMAIL PROTECTED]; [EMAIL PROTECTED] >> > Subject: Re: bri flapping with demand cirquit/igrp >> > redistribution >> > >> > >> > Also check the BRI interface and see if you see >> > IPCDP, it should disapper >> > when you no cdp en! >> > >> > Patrick >> > >> > - Original Message - >> > From: "Leah Lynch" <[EMAIL PROTECTED]> >> > To: "'Jay Chandradas'" <[EMAIL PROTECTED]>; "'Chris >> > Larson'" >> > <[EMAIL PROTECTED]>; "'Bob Boone'" >> > <[EMAIL PROTECTED]>; >> > <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> >> > Sent: Friday, March 23, 2001 7:45 PM >> > Subject: RE: bri flapping with demand cirquit/igrp >> > redistribution >> > >> > >> > > I think you normally disable CDP in dialup lines >> > for efficiency. >> > > >> > > Leah >> > > >> > > -Original Message- >> > > From: [EMAIL PROTECTED] >> > [mailto:[EMAIL PROTECTED]]On Behalf Of >> > > Jay Chandradas >> > > Sent: Friday, March 23, 2001 2:57 PM >> > > To: Chris Larson; Bob Boone; [EMAIL PROTECTED]; >> > > [EMAIL PROTECTED] >> > > Subject: Re: bri flapping with demand cirquit/igrp >> > redistribution >> > > >> > > >> > > >> > > >> > > I am not sure CDP will keep the line up ? And ur >> > interesting traffic is >> > > permit ip any any . I dont think CDP will keep the >> > line up. When u do a >> > > debug ip pack.. u can nvr see CDP.. CDP is layer >> > 2. >> > > >> > > my 0.02 >> > > >> > > - Original Message - >> > > From: "Chris Larson" <[EMAIL PROTECTED]> >> > > To: "Bob Boone" <[EMAIL PROTECTED]>; "Jay >> > Chandradas" >> > <[EMAIL PROTECTED]>; >> > > <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> >> > > Sent: Friday, March 23, 2001 2:40 PM >> > > Subject: RE: bri flapping with demand cirquit/igrp >> > redistribution >> > > >> > > >> > > > Will CDP keep the line up? Turn off CDP. >> > > > >> > > > -Original Message- >> > > > From: [EMAIL PROTECTED] >> > [mailto:[EMAIL PROTECTED]]On Behalf Of >> > > > Bob Boone >> > > > Sent: Friday, March 16, 2001 5:30 PM >> > > > To: Jay Chandradas; [EMAIL PROTECTED]; >> > [EMAIL PROTECTED] >> > > > Subject: Re: bri flapping with demand >> > cirquit/igrp redistribution >> > > > >> > > > >
Re: bri flapping with demand cirquit/igrp redistribution
It may keep the connection open though even after there is no intresting traffic. Don - Original Message - From: Alan Basinger <[EMAIL PROTECTED]> To: Chris Larson <[EMAIL PROTECTED]>; perez claude-vincent <[EMAIL PROTECTED]>; Ya Wen <[EMAIL PROTECTED]>; Patrick Murphy <[EMAIL PROTECTED]>; Leah Lynch <[EMAIL PROTECTED]>; 'Jay Chandradas' <[EMAIL PROTECTED]>; 'Bob Boone' <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Saturday, March 24, 2001 8:37 AM Subject: RE: bri flapping with demand cirquit/igrp redistribution > CDP may work at layer 2 but if the line is brought up because of web traffic > CDP packets would then traverse the line consume a small amount of > bandwidth. > I have installed a few ISDN DDR VPN's without turning off CDP and never had > and issue but also didn't think about the bandwidth consumption at the time. > > Alan > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > Chris Larson > Sent: Saturday, March 24, 2001 9:00 AM > To: perez claude-vincent; Ya Wen; Patrick Murphy; Leah Lynch; 'Jay > Chandradas'; 'Bob Boone'; [EMAIL PROTECTED]; [EMAIL PROTECTED] > Subject: RE: bri flapping with demand cirquit/igrp redistribution > > > It may not, I have just always disabled it on dialer links as a habit. It > makes sense that it shouldn't since the dialer-list defines layer 3 traffic > only. You could always put an access-list on the dialer interface permitting > all traffic with the log statement to see exactly what is trying to get > accross the line. It will output to the console if you are consoled in. That > may help you to see what is bringing the line up. > > -Original Message- > From: perez claude-vincent [mailto:[EMAIL PROTECTED]] > Sent: Saturday, March 24, 2001 9:22 AM > To: Ya Wen; Patrick Murphy; Leah Lynch; 'Jay Chandradas'; 'Chris > Larson'; 'Bob Boone'; [EMAIL PROTECTED]; [EMAIL PROTECTED] > Subject: RE: bri flapping with demand cirquit/igrp redistribution > > > Can somebody tell me how come CDP may bring the line > up? As you know, it works only in layer 2 as said > before. Your dialer-list works at layer 3 & 4 only. > > Did I miss something? :-( > > > > --- Ya Wen <[EMAIL PROTECTED]> wrote: > > Try remove the "log" from the access-list 15 > > associated with the route-map > > stuff. Also, you do not need the summary-address > > under OSPF. > > > > -Ya > > > > -Original Message- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED]]On Behalf Of > > Patrick Murphy > > Sent: Friday, March 23, 2001 5:04 PM > > To: Leah Lynch; 'Jay Chandradas'; 'Chris Larson'; > > 'Bob Boone'; > > [EMAIL PROTECTED]; [EMAIL PROTECTED] > > Subject: Re: bri flapping with demand cirquit/igrp > > redistribution > > > > > > Also check the BRI interface and see if you see > > IPCDP, it should disapper > > when you no cdp en! > > > > Patrick > > > > - Original Message - > > From: "Leah Lynch" <[EMAIL PROTECTED]> > > To: "'Jay Chandradas'" <[EMAIL PROTECTED]>; "'Chris > > Larson'" > > <[EMAIL PROTECTED]>; "'Bob Boone'" > > <[EMAIL PROTECTED]>; > > <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > > Sent: Friday, March 23, 2001 7:45 PM > > Subject: RE: bri flapping with demand cirquit/igrp > > redistribution > > > > > > > I think you normally disable CDP in dialup lines > > for efficiency. > > > > > > Leah > > > > > > -Original Message- > > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED]]On Behalf Of > > > Jay Chandradas > > > Sent: Friday, March 23, 2001 2:57 PM > > > To: Chris Larson; Bob Boone; [EMAIL PROTECTED]; > > > [EMAIL PROTECTED] > > > Subject: Re: bri flapping with demand cirquit/igrp > > redistribution > > > > > > > > > > > > > > > I am not sure CDP will keep the line up ? And ur > > interesting traffic is > > > permit ip any any . I dont think CDP will keep the > > line up. When u do a > > > debug ip pack.. u can nvr see CDP.. CDP is layer > > 2. > > > > > > my 0.02 > > > > > > - Original Message - > > > From: "Chris Larson" <[EMAIL PROTECTED]> > > > To: "Bob Bo
Re: bri flapping with demand cirquit/igrp redistribution
I also had the same problem a few days ago. Here is how I fixed it: 1. Isolate the problem by shutting down all other interfaces besides the interfaces between the two related routers; 2. Disable all other routing protocols (non-OSPF ones); 3. Turn off IGRP redistribution to OSPF; 3. Now, verify the ISDN demand circuit. It should be quiet now. 4. Now, start unshut the interfaces you have shut down one by one and verify that the ISDN demand circuit. It should might come up briefly but it should go down and keep quiet after some interfaces are unshut. If the ISDN line keep dialing, you should know which interface is causing the problem. 5. If the ISDN line is still quiet after you unshut all interfaces, turn on your other router protocols such as IGRN, RIP, etc one by one. Again, verify the IDN line after each change as above. 5. If the ISDN line is still quiet after you enable all other routing protocols, turn on your redistribution one by one. Again verify ISDN line along the way. If you follow these steps, you should be able to pin down what is causing your ISDN line to stay up. Hope it helps. George Zhang >>> "Donald B Johnson Jr" <[EMAIL PROTECTED]> 03/27/01 03:33PM >>> It may keep the connection open though even after there is no intresting traffic. Don - Original Message - From: Alan Basinger <[EMAIL PROTECTED]> To: Chris Larson <[EMAIL PROTECTED]>; perez claude-vincent <[EMAIL PROTECTED]>; Ya Wen <[EMAIL PROTECTED]>; Patrick Murphy <[EMAIL PROTECTED]>; Leah Lynch <[EMAIL PROTECTED]>; 'Jay Chandradas' <[EMAIL PROTECTED]>; 'Bob Boone' <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Saturday, March 24, 2001 8:37 AM Subject: RE: bri flapping with demand cirquit/igrp redistribution > CDP may work at layer 2 but if the line is brought up because of web traffic > CDP packets would then traverse the line consume a small amount of > bandwidth. > I have installed a few ISDN DDR VPN's without turning off CDP and never had > and issue but also didn't think about the bandwidth consumption at the time. > > Alan > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > Chris Larson > Sent: Saturday, March 24, 2001 9:00 AM > To: perez claude-vincent; Ya Wen; Patrick Murphy; Leah Lynch; 'Jay > Chandradas'; 'Bob Boone'; [EMAIL PROTECTED]; [EMAIL PROTECTED] > Subject: RE: bri flapping with demand cirquit/igrp redistribution > > > It may not, I have just always disabled it on dialer links as a habit. It > makes sense that it shouldn't since the dialer-list defines layer 3 traffic > only. You could always put an access-list on the dialer interface permitting > all traffic with the log statement to see exactly what is trying to get > accross the line. It will output to the console if you are consoled in. That > may help you to see what is bringing the line up. > > -Original Message- > From: perez claude-vincent [mailto:[EMAIL PROTECTED]] > Sent: Saturday, March 24, 2001 9:22 AM > To: Ya Wen; Patrick Murphy; Leah Lynch; 'Jay Chandradas'; 'Chris > Larson'; 'Bob Boone'; [EMAIL PROTECTED]; [EMAIL PROTECTED] > Subject: RE: bri flapping with demand cirquit/igrp redistribution > > > Can somebody tell me how come CDP may bring the line > up? As you know, it works only in layer 2 as said > before. Your dialer-list works at layer 3 & 4 only. > > Did I miss something? :-( > > > > --- Ya Wen <[EMAIL PROTECTED]> wrote: > > Try remove the "log" from the access-list 15 > > associated with the route-map > > stuff. Also, you do not need the summary-address > > under OSPF. > > > > -Ya > > > > -Original Message- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED]]On Behalf Of > > Patrick Murphy > > Sent: Friday, March 23, 2001 5:04 PM > > To: Leah Lynch; 'Jay Chandradas'; 'Chris Larson'; > > 'Bob Boone'; > > [EMAIL PROTECTED]; [EMAIL PROTECTED] > > Subject: Re: bri flapping with demand cirquit/igrp > > redistribution > > > > > > Also check the BRI interface and see if you see > > IPCDP, it should disapper > > when you no cdp en! > > > > Patrick > > > > - Original Message - > > From: "Leah Lynch" <[EMAIL PROTECTED]> > > To: "'Jay Chandradas'" <[EMAIL PROTECTED]>; "'Chris > > Larson'" > > <[EMAIL PROTECTED]>; "'Bob Boone'" > > <[EMAIL PROTECTED]>; > > <[EM
Re: bri flapping with demand cirquit/igrp redistribution
Redistribution brings it up. What happens is, the link is brought up and OSPF forms an adjacency. Then, since it is a demand circuit, periodic LSA's are squelched and OSPF routes associated with those LSA's do not age out of the routing table. Then, the layer 2 portion of the link drops, since there is no interesting traffic. Once the link drops, whatever protocol you are redistributing into OSPF sees it's link drop, and changes its tables in accordance with the topology change. This change gets redistributed into OSPF, and OSPF floods LSA's out announcing the change. These LSA's bring up the link while OSPF converges. Then, after a while, things are stable again, and the link drops - and guess what? That's right! The whole thing starts again... There are ways to stop it. Z >From: "George Zhang" <[EMAIL PROTECTED]> >Reply-To: "George Zhang" <[EMAIL PROTECTED]> >To: <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, ><[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, ><[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, > <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, ><[EMAIL PROTECTED]>, <[EMAIL PROTECTED]> >Subject: Re: bri flapping with demand cirquit/igrp redistribution >Date: Tue, 27 Mar 2001 13:50:52 -0600 > >I also had the same problem a few days ago. Here is how I fixed it: > >1. Isolate the problem by shutting down all other interfaces besides the >interfaces > between the two related routers; > >2. Disable all other routing protocols (non-OSPF ones); > >3. Turn off IGRP redistribution to OSPF; > >3. Now, verify the ISDN demand circuit. It should be quiet now. > >4. Now, start unshut the interfaces you have shut down one by one and >verify > that the ISDN demand circuit. It should might come up briefly but it >should go > down and keep quiet after some interfaces are unshut. If the ISDN >line >keep dialing, you should know which interface is causing the problem. > >5. If the ISDN line is still quiet after you unshut all interfaces, turn on >your other router > protocols such as IGRN, RIP, etc one by one. Again, verify the IDN >line after > each change as above. > >5. If the ISDN line is still quiet after you enable all other routing >protocols, turn on your >redistribution one by one. Again verify ISDN line along the way. > >If you follow these steps, you should be able to pin down what is causing >your ISDN >line to stay up. > >Hope it helps. > >George Zhang > > > >>> "Donald B Johnson Jr" <[EMAIL PROTECTED]> 03/27/01 03:33PM >>> >It may keep the connection open though even after there is no intresting >traffic. >Don >- Original Message - >From: Alan Basinger <[EMAIL PROTECTED]> >To: Chris Larson <[EMAIL PROTECTED]>; perez claude-vincent ><[EMAIL PROTECTED]>; Ya Wen <[EMAIL PROTECTED]>; Patrick >Murphy <[EMAIL PROTECTED]>; Leah Lynch <[EMAIL PROTECTED]>; 'Jay >Chandradas' <[EMAIL PROTECTED]>; 'Bob Boone' <[EMAIL PROTECTED]>; ><[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> >Sent: Saturday, March 24, 2001 8:37 AM >Subject: RE: bri flapping with demand cirquit/igrp redistribution > > > > CDP may work at layer 2 but if the line is brought up because of web >traffic > > CDP packets would then traverse the line consume a small amount of > > bandwidth. > > I have installed a few ISDN DDR VPN's without turning off CDP and never >had > > and issue but also didn't think about the bandwidth consumption at the >time. > > > > Alan > > > > -Original Message- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > > Chris Larson > > Sent: Saturday, March 24, 2001 9:00 AM > > To: perez claude-vincent; Ya Wen; Patrick Murphy; Leah Lynch; 'Jay > > Chandradas'; 'Bob Boone'; [EMAIL PROTECTED]; [EMAIL PROTECTED] > > Subject: RE: bri flapping with demand cirquit/igrp redistribution > > > > > > It may not, I have just always disabled it on dialer links as a habit. >It > > makes sense that it shouldn't since the dialer-list defines layer 3 >traffic > > only. You could always put an access-list on the dialer interface >permitting > > all traffic with the log statement to see exactly what is trying to get > > accross the line. It will output to the console if you are consoled in. >That > > may help you to see what is bringing the line up. > > > > -Original Message- > > Fr
RE: bri flapping with demand cirquit/igrp redistribution
Your correct Z filter the bri subnet from redistribution into IGRP and your LSA's should not continue to bring the link up. Alan -Original Message- From: Mask Of Zorro [mailto:[EMAIL PROTECTED]] Sent: Tuesday, March 27, 2001 2:32 PM To: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: bri flapping with demand cirquit/igrp redistribution Redistribution brings it up. What happens is, the link is brought up and OSPF forms an adjacency. Then, since it is a demand circuit, periodic LSA's are squelched and OSPF routes associated with those LSA's do not age out of the routing table. Then, the layer 2 portion of the link drops, since there is no interesting traffic. Once the link drops, whatever protocol you are redistributing into OSPF sees it's link drop, and changes its tables in accordance with the topology change. This change gets redistributed into OSPF, and OSPF floods LSA's out announcing the change. These LSA's bring up the link while OSPF converges. Then, after a while, things are stable again, and the link drops - and guess what? That's right! The whole thing starts again... There are ways to stop it. Z >From: "George Zhang" <[EMAIL PROTECTED]> >Reply-To: "George Zhang" <[EMAIL PROTECTED]> >To: <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, ><[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, ><[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, > <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, ><[EMAIL PROTECTED]>, <[EMAIL PROTECTED]> >Subject: Re: bri flapping with demand cirquit/igrp redistribution >Date: Tue, 27 Mar 2001 13:50:52 -0600 > >I also had the same problem a few days ago. Here is how I fixed it: > >1. Isolate the problem by shutting down all other interfaces besides the >interfaces > between the two related routers; > >2. Disable all other routing protocols (non-OSPF ones); > >3. Turn off IGRP redistribution to OSPF; > >3. Now, verify the ISDN demand circuit. It should be quiet now. > >4. Now, start unshut the interfaces you have shut down one by one and >verify > that the ISDN demand circuit. It should might come up briefly but it >should go > down and keep quiet after some interfaces are unshut. If the ISDN >line >keep dialing, you should know which interface is causing the problem. > >5. If the ISDN line is still quiet after you unshut all interfaces, turn on >your other router > protocols such as IGRN, RIP, etc one by one. Again, verify the IDN >line after > each change as above. > >5. If the ISDN line is still quiet after you enable all other routing >protocols, turn on your >redistribution one by one. Again verify ISDN line along the way. > >If you follow these steps, you should be able to pin down what is causing >your ISDN >line to stay up. > >Hope it helps. > >George Zhang > > > >>> "Donald B Johnson Jr" <[EMAIL PROTECTED]> 03/27/01 03:33PM >>> >It may keep the connection open though even after there is no intresting >traffic. >Don >- Original Message - >From: Alan Basinger <[EMAIL PROTECTED]> >To: Chris Larson <[EMAIL PROTECTED]>; perez claude-vincent ><[EMAIL PROTECTED]>; Ya Wen <[EMAIL PROTECTED]>; Patrick >Murphy <[EMAIL PROTECTED]>; Leah Lynch <[EMAIL PROTECTED]>; 'Jay >Chandradas' <[EMAIL PROTECTED]>; 'Bob Boone' <[EMAIL PROTECTED]>; ><[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> >Sent: Saturday, March 24, 2001 8:37 AM >Subject: RE: bri flapping with demand cirquit/igrp redistribution > > > > CDP may work at layer 2 but if the line is brought up because of web >traffic > > CDP packets would then traverse the line consume a small amount of > > bandwidth. > > I have installed a few ISDN DDR VPN's without turning off CDP and never >had > > and issue but also didn't think about the bandwidth consumption at the >time. > > > > Alan > > > > -Original Message- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > > Chris Larson > > Sent: Saturday, March 24, 2001 9:00 AM > > To: perez claude-vincent; Ya Wen; Patrick Murphy; Leah Lynch; 'Jay > > Chandradas'; 'Bob Boone'; [EMAIL PROTECTED]; [EMAIL PROTECTED] > > Subject: RE: bri flapping with demand cirquit/igrp redistribution > > > > > > It may not, I have just always disabled it on dialer links
RE: bri flapping with demand cirquit/igrp redistribution
what about blocking the 224.0.0.6 and 224.0.0.5 as interesting traffic. I do that by default so that updates do not bring up the link unnecessarily -Original Message- From: Alan Basinger [mailto:[EMAIL PROTECTED]] Sent: 27 March 2001 22:31 To: Mask Of Zorro; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: RE: bri flapping with demand cirquit/igrp redistribution Your correct Z filter the bri subnet from redistribution into IGRP and your LSA's should not continue to bring the link up. Alan -Original Message- From: Mask Of Zorro [mailto:[EMAIL PROTECTED]] Sent: Tuesday, March 27, 2001 2:32 PM To: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: bri flapping with demand cirquit/igrp redistribution Redistribution brings it up. What happens is, the link is brought up and OSPF forms an adjacency. Then, since it is a demand circuit, periodic LSA's are squelched and OSPF routes associated with those LSA's do not age out of the routing table. Then, the layer 2 portion of the link drops, since there is no interesting traffic. Once the link drops, whatever protocol you are redistributing into OSPF sees it's link drop, and changes its tables in accordance with the topology change. This change gets redistributed into OSPF, and OSPF floods LSA's out announcing the change. These LSA's bring up the link while OSPF converges. Then, after a while, things are stable again, and the link drops - and guess what? That's right! The whole thing starts again... There are ways to stop it. Z >From: "George Zhang" <[EMAIL PROTECTED]> >Reply-To: "George Zhang" <[EMAIL PROTECTED]> >To: <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, ><[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, ><[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, > <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, ><[EMAIL PROTECTED]>, <[EMAIL PROTECTED]> >Subject: Re: bri flapping with demand cirquit/igrp redistribution >Date: Tue, 27 Mar 2001 13:50:52 -0600 > >I also had the same problem a few days ago. Here is how I fixed it: > >1. Isolate the problem by shutting down all other interfaces besides the >interfaces > between the two related routers; > >2. Disable all other routing protocols (non-OSPF ones); > >3. Turn off IGRP redistribution to OSPF; > >3. Now, verify the ISDN demand circuit. It should be quiet now. > >4. Now, start unshut the interfaces you have shut down one by one and >verify > that the ISDN demand circuit. It should might come up briefly but it >should go > down and keep quiet after some interfaces are unshut. If the ISDN >line >keep dialing, you should know which interface is causing the problem. > >5. If the ISDN line is still quiet after you unshut all interfaces, turn on >your other router > protocols such as IGRN, RIP, etc one by one. Again, verify the IDN >line after > each change as above. > >5. If the ISDN line is still quiet after you enable all other routing >protocols, turn on your >redistribution one by one. Again verify ISDN line along the way. > >If you follow these steps, you should be able to pin down what is causing >your ISDN >line to stay up. > >Hope it helps. > >George Zhang > > > >>> "Donald B Johnson Jr" <[EMAIL PROTECTED]> 03/27/01 03:33PM >>> >It may keep the connection open though even after there is no intresting >traffic. >Don >- Original Message - >From: Alan Basinger <[EMAIL PROTECTED]> >To: Chris Larson <[EMAIL PROTECTED]>; perez claude-vincent ><[EMAIL PROTECTED]>; Ya Wen <[EMAIL PROTECTED]>; Patrick >Murphy <[EMAIL PROTECTED]>; Leah Lynch <[EMAIL PROTECTED]>; 'Jay >Chandradas' <[EMAIL PROTECTED]>; 'Bob Boone' <[EMAIL PROTECTED]>; ><[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> >Sent: Saturday, March 24, 2001 8:37 AM >Subject: RE: bri flapping with demand cirquit/igrp redistribution > > > > CDP may work at layer 2 but if the line is brought up because of web >traffic > > CDP packets would then traverse the line consume a small amount of > > bandwidth. > > I have installed a few ISDN DDR VPN's without turning off CDP and never >had > > and issue but also didn't think about the bandwidth consumption at the >time. > > >
RE: bri flapping with demand cirquit/igrp redistribution
the whole idea for DDR is that only interesting traffic will bring up the link. Once the link is active, then by all means, the routing protocols can send hello messages. This is for the case where DDR is used for backup purposes. You will to weigh up the benfits vs costs. -Original Message- From: Alan Basinger [mailto:[EMAIL PROTECTED]] Sent: 28 March 2001 15:44 To: Andrew Larkins Subject: RE: bri flapping with demand cirquit/igrp redistribution If you run the bri as demand circuit the only thing that should bring up the line is topology changes. You would want them to bring up the line so you have a proper view of the network right? I would adjust the timers to have the bri go down after 60 or even 30 seconds of in-activity instead of 2 minutes and filter out the /32's so it does not flap and only comes up if there is a topology change. Would filtering the multicast networks 224.0.0.6 and 224.0.0.5 keep the line from coming up for any topology change? Alan -Original Message- From: Andrew Larkins [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 28, 2001 1:38 AM To: Alan Basinger; Mask Of Zorro; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: RE: bri flapping with demand cirquit/igrp redistribution what about blocking the 224.0.0.6 and 224.0.0.5 as interesting traffic. I do that by default so that updates do not bring up the link unnecessarily -Original Message- From: Alan Basinger [mailto:[EMAIL PROTECTED]] Sent: 27 March 2001 22:31 To: Mask Of Zorro; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: RE: bri flapping with demand cirquit/igrp redistribution Your correct Z filter the bri subnet from redistribution into IGRP and your LSA's should not continue to bring the link up. Alan -Original Message- From: Mask Of Zorro [mailto:[EMAIL PROTECTED]] Sent: Tuesday, March 27, 2001 2:32 PM To: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: bri flapping with demand cirquit/igrp redistribution Redistribution brings it up. What happens is, the link is brought up and OSPF forms an adjacency. Then, since it is a demand circuit, periodic LSA's are squelched and OSPF routes associated with those LSA's do not age out of the routing table. Then, the layer 2 portion of the link drops, since there is no interesting traffic. Once the link drops, whatever protocol you are redistributing into OSPF sees it's link drop, and changes its tables in accordance with the topology change. This change gets redistributed into OSPF, and OSPF floods LSA's out announcing the change. These LSA's bring up the link while OSPF converges. Then, after a while, things are stable again, and the link drops - and guess what? That's right! The whole thing starts again... There are ways to stop it. Z >From: "George Zhang" <[EMAIL PROTECTED]> >Reply-To: "George Zhang" <[EMAIL PROTECTED]> >To: <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, ><[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, ><[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, > <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, ><[EMAIL PROTECTED]>, <[EMAIL PROTECTED]> >Subject: Re: bri flapping with demand cirquit/igrp redistribution >Date: Tue, 27 Mar 2001 13:50:52 -0600 > >I also had the same problem a few days ago. Here is how I fixed it: > >1. Isolate the problem by shutting down all other interfaces besides the >interfaces > between the two related routers; > >2. Disable all other routing protocols (non-OSPF ones); > >3. Turn off IGRP redistribution to OSPF; > >3. Now, verify the ISDN demand circuit. It should be quiet now. > >4. Now, start unshut the interfaces you have shut down one by one and >verify > that the ISDN demand circuit. It should might come up briefly but it >should go > down and keep quiet after some interfaces are unshut. If the ISDN >line >keep dialing, you should know which interface is causing the problem. > >5. If the ISDN line is still quiet after you unshut all interfaces, turn on >your other router > protocols such as IGRN, RIP, etc one by one. Again, verify the IDN >line after > each change as above. > >5. If the ISDN line is still quiet after you enable all other routing >protocols, turn on your >redistri
RE: bri flapping with demand cirquit/igrp redistribution
Here's what I did. Changed the access-list to deny and changed the wildcards from 3 to 255 since IGRP redistributes the classful version of 173.5.8.x network. See below: interface BRI0/0 ip address 173.5.8.1 255.255.255.252 ip ospf demand-circuit ... router ospf 1 redistribute igrp 100 metric 100 subnets route-map stuff network 173.5.8.0 0.0.0.3 area 3 access-list 15 deny 173.5.8.0 0.0.0.255 access-list 15 permit any route-map stuff deny 5 match ip address 15 ! route-map stuff permit 10 ! Jerry "Been there. Done that" Toomey --- Andrew Larkins <[EMAIL PROTECTED]> wrote: > > what about blocking the 224.0.0.6 and 224.0.0.5 as interesting traffic. > I do > that by default so that updates do not bring up the link unnecessarily > -Original Message- > From: Alan Basinger [mailto:[EMAIL PROTECTED]] > Sent: 27 March 2001 22:31 > To: Mask Of Zorro; [EMAIL PROTECTED]; > [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; > [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; > [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; > [EMAIL PROTECTED] > Subject: RE: bri flapping with demand cirquit/igrp redistribution > > > Your correct Z filter the bri subnet from redistribution into IGRP and > your > LSA's should not continue to bring the link up. > > Alan > > -Original Message- > From: Mask Of Zorro [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, March 27, 2001 2:32 PM > To: [EMAIL PROTECTED]; [EMAIL PROTECTED]; > [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; > [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; > [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; > [EMAIL PROTECTED] > Subject: Re: bri flapping with demand cirquit/igrp redistribution > > > Redistribution brings it up. > > What happens is, the link is brought up and OSPF forms an adjacency. > Then, > since it is a demand circuit, periodic LSA's are squelched and OSPF > routes > associated with those LSA's do not age out of the routing table. Then, > the > layer 2 portion of the link drops, since there is no interesting > traffic. > > Once the link drops, whatever protocol you are redistributing into OSPF > sees > it's link drop, and changes its tables in accordance with the topology > change. This change gets redistributed into OSPF, and OSPF floods LSA's > out > announcing the change. These LSA's bring up the link while OSPF > converges. > Then, after a while, things are stable again, and the link drops - and > guess > what? That's right! The whole thing starts again... > > There are ways to stop it. > > Z > >From: "George Zhang" <[EMAIL PROTECTED]> > >Reply-To: "George Zhang" <[EMAIL PROTECTED]> > >To: <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, > ><[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, > ><[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, > > <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, > ><[EMAIL PROTECTED]>, <[EMAIL PROTECTED]> > >Subject: Re: bri flapping with demand cirquit/igrp redistribution > >Date: Tue, 27 Mar 2001 13:50:52 -0600 > > > >I also had the same problem a few days ago. Here is how I fixed it: > > > >1. Isolate the problem by shutting down all other interfaces besides > the > >interfaces > > between the two related routers; > > > >2. Disable all other routing protocols (non-OSPF ones); > > > >3. Turn off IGRP redistribution to OSPF; > > > >3. Now, verify the ISDN demand circuit. It should be quiet now. > > > >4. Now, start unshut the interfaces you have shut down one by one and > >verify > > that the ISDN demand circuit. It should might come up briefly but > it > >should go > > down and keep quiet after some interfaces are unshut. If the ISDN > >line > >keep dialing, you should know which interface is causing the > problem. > > > >5. If the ISDN line is still quiet after you unshut all interfaces, > turn on > >your other router > > protocols such as IGRN, RIP, etc one by one. Again, verify the > IDN > >line after > > each change as above. > > > >5. If the ISDN line is still quiet after you enable all other routing > >protocols, turn on your > >redistribution one by one. Again verify ISDN line along the way. > > > >If you follow these steps, you should be able to pin down what is > causing > >your ISDN > >line to stay up. > > > >Hope it helps. > > > >George Zhang > >
RE: bri flapping with demand cirquit/igrp redistribution
an easier way to find the problem is to debug ospf flooding and/or lsa generation. Then you do not have to go through the pain of waiting for the link to be quiet for each interface as you bring it up. Julie Ann At 02:31 PM 3/27/2001 -0600, Alan Basinger wrote: >Your correct Z filter the bri subnet from redistribution into IGRP and your >LSA's should not continue to bring the link up. > >Alan > >-Original Message- >From: Mask Of Zorro [mailto:[EMAIL PROTECTED]] >Sent: Tuesday, March 27, 2001 2:32 PM >To: [EMAIL PROTECTED]; [EMAIL PROTECTED]; >[EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; >[EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; >[EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; >[EMAIL PROTECTED] >Subject: Re: bri flapping with demand cirquit/igrp redistribution > > >Redistribution brings it up. > >What happens is, the link is brought up and OSPF forms an adjacency. Then, >since it is a demand circuit, periodic LSA's are squelched and OSPF routes >associated with those LSA's do not age out of the routing table. Then, the >layer 2 portion of the link drops, since there is no interesting traffic. > >Once the link drops, whatever protocol you are redistributing into OSPF sees >it's link drop, and changes its tables in accordance with the topology >change. This change gets redistributed into OSPF, and OSPF floods LSA's out >announcing the change. These LSA's bring up the link while OSPF converges. >Then, after a while, things are stable again, and the link drops - and guess >what? That's right! The whole thing starts again... > >There are ways to stop it. > >Z > >From: "George Zhang" <[EMAIL PROTECTED]> > >Reply-To: "George Zhang" <[EMAIL PROTECTED]> > >To: <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, > ><[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, > ><[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, > > <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, > ><[EMAIL PROTECTED]>, <[EMAIL PROTECTED]> > >Subject: Re: bri flapping with demand cirquit/igrp redistribution > >Date: Tue, 27 Mar 2001 13:50:52 -0600 > > > >I also had the same problem a few days ago. Here is how I fixed it: > > > >1. Isolate the problem by shutting down all other interfaces besides the > >interfaces > > between the two related routers; > > > >2. Disable all other routing protocols (non-OSPF ones); > > > >3. Turn off IGRP redistribution to OSPF; > > > >3. Now, verify the ISDN demand circuit. It should be quiet now. > > > >4. Now, start unshut the interfaces you have shut down one by one and > >verify > > that the ISDN demand circuit. It should might come up briefly but it > >should go > > down and keep quiet after some interfaces are unshut. If the ISDN > >line > >keep dialing, you should know which interface is causing the problem. > > > >5. If the ISDN line is still quiet after you unshut all interfaces, turn on > >your other router > > protocols such as IGRN, RIP, etc one by one. Again, verify the IDN > >line after > > each change as above. > > > >5. If the ISDN line is still quiet after you enable all other routing > >protocols, turn on your > >redistribution one by one. Again verify ISDN line along the way. > > > >If you follow these steps, you should be able to pin down what is causing > >your ISDN > >line to stay up. > > > >Hope it helps. > > > >George Zhang > > > > > > >>> "Donald B Johnson Jr" <[EMAIL PROTECTED]> 03/27/01 03:33PM >>> > >It may keep the connection open though even after there is no intresting > >traffic. > >Don > >- Original Message - > >From: Alan Basinger <[EMAIL PROTECTED]> > >To: Chris Larson <[EMAIL PROTECTED]>; perez claude-vincent > ><[EMAIL PROTECTED]>; Ya Wen <[EMAIL PROTECTED]>; Patrick > >Murphy <[EMAIL PROTECTED]>; Leah Lynch <[EMAIL PROTECTED]>; 'Jay > >Chandradas' <[EMAIL PROTECTED]>; 'Bob Boone' <[EMAIL PROTECTED]>; > ><[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > >Sent: Saturday, March 24, 2001 8:37 AM > >Subject: RE: bri flapping with demand cirquit/igrp redistribution > > > > > > > CDP may work at layer 2 but if the line is brought up because of web > >traffic > > > CDP packets would then traverse the line consume a small amount of > > > bandwidth. > > &g
RE: bri flapping with demand cirquit/igrp redistribution
Thanks to you all, --- "Connary, Julie Ann" <[EMAIL PROTECTED]> wrote: > an easier way to find the problem is to debug ospf > flooding and/or lsa > generation. Then you do not > have to go through the pain of waiting for the link > to be quiet for each > interface as you bring it up. > > Julie Ann > > At 02:31 PM 3/27/2001 -0600, Alan Basinger wrote: > >Your correct Z filter the bri subnet from > redistribution into IGRP and your > >LSA's should not continue to bring the link up. > > > >Alan > > > >-Original Message- > >From: Mask Of Zorro [mailto:[EMAIL PROTECTED]] > >Sent: Tuesday, March 27, 2001 2:32 PM > >To: [EMAIL PROTECTED]; > [EMAIL PROTECTED]; > >[EMAIL PROTECTED]; [EMAIL PROTECTED]; > [EMAIL PROTECTED]; > >[EMAIL PROTECTED]; [EMAIL PROTECTED]; > [EMAIL PROTECTED]; > >[EMAIL PROTECTED]; [EMAIL PROTECTED]; > [EMAIL PROTECTED]; > >[EMAIL PROTECTED] > >Subject: Re: bri flapping with demand cirquit/igrp > redistribution > > > > > >Redistribution brings it up. > > > >What happens is, the link is brought up and OSPF > forms an adjacency. Then, > >since it is a demand circuit, periodic LSA's are > squelched and OSPF routes > >associated with those LSA's do not age out of the > routing table. Then, the > >layer 2 portion of the link drops, since there is > no interesting traffic. > > > >Once the link drops, whatever protocol you are > redistributing into OSPF sees > >it's link drop, and changes its tables in > accordance with the topology > >change. This change gets redistributed into OSPF, > and OSPF floods LSA's out > >announcing the change. These LSA's bring up the > link while OSPF converges. > >Then, after a while, things are stable again, and > the link drops - and guess > >what? That's right! The whole thing starts > again... > > > >There are ways to stop it. > > > >Z > > >From: "George Zhang" > <[EMAIL PROTECTED]> > > >Reply-To: "George Zhang" > <[EMAIL PROTECTED]> > > >To: <[EMAIL PROTECTED]>, > <[EMAIL PROTECTED]>, > > ><[EMAIL PROTECTED]>, > <[EMAIL PROTECTED]>, > > ><[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, > <[EMAIL PROTECTED]>, > > > <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>, > > ><[EMAIL PROTECTED]>, <[EMAIL PROTECTED]> > > >Subject: Re: bri flapping with demand > cirquit/igrp redistribution > > >Date: Tue, 27 Mar 2001 13:50:52 -0600 > > > > > >I also had the same problem a few days ago. Here > is how I fixed it: > > > > > >1. Isolate the problem by shutting down all > other interfaces besides the > > >interfaces > > > between the two related routers; > > > > > >2. Disable all other routing protocols (non-OSPF > ones); > > > > > >3. Turn off IGRP redistribution to OSPF; > > > > > >3. Now, verify the ISDN demand circuit. It > should be quiet now. > > > > > >4. Now, start unshut the interfaces you have shut > down one by one and > > >verify > > > that the ISDN demand circuit. It should > might come up briefly but it > > >should go > > > down and keep quiet after some interfaces > are unshut. If the ISDN > > >line > > >keep dialing, you should know which interface > is causing the problem. > > > > > >5. If the ISDN line is still quiet after you > unshut all interfaces, turn on > > >your other router > > > protocols such as IGRN, RIP, etc one by one. > Again, verify the IDN > > >line after > > > each change as above. > > > > > >5. If the ISDN line is still quiet after you > enable all other routing > > >protocols, turn on your > > >redistribution one by one. Again verify ISDN > line along the way. > > > > > >If you follow these steps, you should be able to > pin down what is causing > > >your ISDN > > >line to stay up. > > > > > >Hope it helps. > > > > > >George Zhang > > > > > > > > > >>> "Donald B Johnson Jr" > <[EMAIL PROTECTED]> 03/27/01 03:33PM >>> > > >It may keep the connection open though even after > there is no intresting > > >traffic. > > >Don > > >- Original Message - > > >From: Alan Basinger <[EMAIL PROTECTED]> &g
Re[2]: bri flapping with demand cirquit/igrp redistribution
Hello All, Nobody is right! When you redistribute from any kind of protocols into OSPF you've got E2 (or E1) _EXTERNAL_ OSPF route. D-O-D suppresses only HELLOs and Type 1-2-3/4 LSAs, but EXTERNAL LSA was not suppresed, so if you see at the 'show dialer' output with '224.0.0.6' as destination - you will understand that OSPF causes ISDN to dial :-))) So... You've known the cause of dialing. What can we do with it? You can suppress ospf database on that router(s) to filter external LSAs, or you can simple set up 'ospf transfer-interval' or better decrease timers for redistributed routing process or ... or... Up to you! BB> did that, still doesn't work. i'm tagging on going out to IGRP and then BB> blocking that tag from coming back into OSPF. still bri is flapping. what BB> the hell? i thought we worked this problem out in groupstudy! BB> HELP! -- WBW, xander mailto:[EMAIL PROTECTED] CCNA, CCNP+VoiceAccess, CCIE very soon :-) ... _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
