RE: isdn backup query [7:70443]
HI Julian, I think a floating static route will serve your purpose fine. HTH Vikram -Original Message- From: Julian.P [mailto:[EMAIL PROTECTED] Sent: Tuesday, June 10, 2003 2:09 PM To: [EMAIL PROTECTED] Subject: isdn backup query [7:70443] Hi all I just have a query about configuring an isdn backup link to an isp. I am going to use the backup interface bri0 with the backup delay command on the serial link. My question is what routing would i have to add if there is already a default route going out the serial interface. Thanks in advance guys Julian FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=70576t=70443 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: isdn backup query [7:70443]
Use a floating static route with a higher metric - around 200 etc -Original Message- From: Julian.P [mailto:[EMAIL PROTECTED] Sent: Tuesday, June 10, 2003 2:09 PM To: [EMAIL PROTECTED] Subject: isdn backup query [7:70443] Hi all I just have a query about configuring an isdn backup link to an isp. I am going to use the backup interface bri0 with the backup delay command on the serial link. My question is what routing would i have to add if there is already a default route going out the serial interface. Thanks in advance guys Julian FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=70584t=70443 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: isdn backup query [7:70443]
Considering that your default route is probably pointing to a next-hop of the other side of the serial or perhaps is pointing to the serial interface itself, you would still need to tell the router to send traffic out of the BRI0 in the event that your serial goes down. If you serial interface goes down, it will take your current default route out of the routing table as well. So what you need to do is create a floating default static route which is nothing more than a default route with a higher preference so that it will only become active when the default route pointing to the serial is removed. Hope this helps. Thanks, Mario Puras SoluNet Technical Support -Original Message- From: Julian.P [mailto:[EMAIL PROTECTED] Sent: Tuesday, June 10, 2003 4:39 AM To: [EMAIL PROTECTED] Subject: isdn backup query [7:70443] Hi all I just have a query about configuring an isdn backup link to an isp. I am going to use the backup interface bri0 with the backup delay command on the serial link. My question is what routing would i have to add if there is already a default route going out the serial interface. Thanks in advance guys Julian FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=70452t=70443 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ISDN Backup for Frame-Relay [7:56114]
You can assign a single B channel to each remote site. Dave norsyam ariffin wrote: Hi guys, I need some advice on ISDN backup for Frame-Relay. How should I do if have 4 ISDN BRI and I want to configure each ISDN BRI as a backup for two sites each which use Frame-Relay. Means 4 ISDN BRI for 8 sites? Thank in advance Syam _ Broadband? Dial-up? Get reliable MSN Internet Access. http://resourcecenter.msn.com/access/plans/default.asp -- David Madland CCIE# 2016 Sr. Network Engineer Qwest Communications 612-664-3367 You don't make the poor richer by making the rich poorer. --Winston Churchill Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=56146t=56114 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: ISDN Backup [7:50261]
Shane Stockman wrote: I currently have 2 point to point links ruuning to the same place using eigrp as the routing protocol.I have added a isdn bri as backup but I don't want the isdn to kick in until both the point to point links drop. There is a serious routing issue with have 1 link up and the bri as the will load balance across and cause a loss of packets. If there are any config examples or documents or if anyonehas done this sort of config please send some info. Thanks Sounds like a case for floating static routes. Lets say that if both ptp links drop, you want site A to call site B. Presumably site A can usually see routes to various site B addresses via EIGRP (maybe even nicely summarised). On site A, set up a static route to a site B address (or to a summary - whatever matches your EIGRP routes), with an administrative distance of say 200, pointing to the dialer interface for the BRI (if you're using a dialer - or straight to the BRI). Then, if one ptp link drops, site A will still use the EIGRP route across the other ptp link. If both ptp links drop, the static route will kick in and send traffic via the ISDN. JMcL Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=50337t=50261 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: ISDN backup will not activate [7:25129]
hi Check wheather u made backup interface configuration. In case if u use serial as primary ,u have to mention BRIS as backup. Hope I understood the question correctly. Regards Siva -Original Message- From: MADMAN [mailto:[EMAIL PROTECTED]] Sent: Saturday, November 03, 2001 7:42 AM To: [EMAIL PROTECTED] Subject: Re: ISDN backup will not activate [7:25129] Your making it too hard, you don't need the dialer map but you do need a dialer string 1800111. Your not telling the interface where to call. Dave nettable_walker wrote: 11/2/2001 4:30pm Friday Professional's, I would like to get traffic from Paris to use ISDN when the primary link goes done. When the serial link goes down the ISDN never comes up. I even added a static route to send ALL traffic from the ethernet to the BRI and the BRI is not coming up! I did a clear ip route * to no avail. Any ideas ? I am sure it is a simple detail. Config follows: Paris#sho run Building configuration... Current configuration : 1457 bytes ! version 12.2 no service single-slot-reload-enable service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname Paris ! logging rate-limit console 10 except errors aaa new-model aaa authentication login default local aaa authentication login NO_AUTHEN none aaa authentication ppp default if-needed local enable password cisco ! username New_York_City password 0 cisco username richard password 0 cisco username kaiser password 0 cisco ip subnet-zero no ip finger ! no ip dhcp-client network-discovery ! ! ! ! interface Ethernet0 description line to ftp server ip address 10.0.0.1 255.0.0.0 ! interface Serial0 description line to 2522_router ip address 170.17.1.2 255.255.0.0 no fair-queue ! interface Serial1 no ip address shutdown ! interface BRI0 ip address 172.20.10.1 255.255.255.0 encapsulation ppp dialer idle-timeout 900 dialer map ip 172.20.10.2 name New_York_City broadcast dialer-group 1 isdn spid1 isdn spid2 isdn x25 static-tei 0 cdapi buffers regular 0 cdapi buffers raw 0 cdapi buffers large 0 ppp authentication chap ppp multilink ! router eigrp 100 network 10.0.0.0 network 170.17.0.0 auto-summary no eigrp log-neighbor-changes ! ip kerberos source-interface any ip classless ip route 10.0.0.0 255.255.255.255 BRI0 ip http server ! dialer-list 1 protocol ip permit ! ! line con 0 transport input none line aux 0 line vty 0 1 password cisco line vty 2 4 ! end Paris# -- David Madland CCIE# 2016 Senior Network Engineer Qwest Communications 612-664-3367 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=25177t=25129 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ISDN backup will not activate [7:25129]
Hello, Try using the backup interface command under the serial interface. If the serial 0 is the primary then use the following config interface Serial0 description line to 2522_router ip address 170.17.1.2 255.255.0.0 backup interface bri 0 backup delay 5 25 (it will wait 5 sec before activating the backup line. Upon restoring of primary line, backup line will remaint active for 25 sec.) no fair-queue Try this. Faisal nettable_walker wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... 11/2/2001 4:30pm Friday Professional's, I would like to get traffic from Paris to use ISDN when the primary link goes done. When the serial link goes down the ISDN never comes up. I even added a static route to send ALL traffic from the ethernet to the BRI and the BRI is not coming up! I did a clear ip route * to no avail. Any ideas ? I am sure it is a simple detail. Config follows: Paris#sho run Building configuration... Current configuration : 1457 bytes ! version 12.2 no service single-slot-reload-enable service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname Paris ! logging rate-limit console 10 except errors aaa new-model aaa authentication login default local aaa authentication login NO_AUTHEN none aaa authentication ppp default if-needed local enable password cisco ! username New_York_City password 0 cisco username richard password 0 cisco username kaiser password 0 cisco ip subnet-zero no ip finger ! no ip dhcp-client network-discovery ! ! ! ! interface Ethernet0 description line to ftp server ip address 10.0.0.1 255.0.0.0 ! interface Serial0 description line to 2522_router ip address 170.17.1.2 255.255.0.0 no fair-queue ! interface Serial1 no ip address shutdown ! interface BRI0 ip address 172.20.10.1 255.255.255.0 encapsulation ppp dialer idle-timeout 900 dialer map ip 172.20.10.2 name New_York_City broadcast dialer-group 1 isdn spid1 isdn spid2 isdn x25 static-tei 0 cdapi buffers regular 0 cdapi buffers raw 0 cdapi buffers large 0 ppp authentication chap ppp multilink ! router eigrp 100 network 10.0.0.0 network 170.17.0.0 auto-summary no eigrp log-neighbor-changes ! ip kerberos source-interface any ip classless ip route 10.0.0.0 255.255.255.255 BRI0 ip http server ! dialer-list 1 protocol ip permit ! ! line con 0 transport input none line aux 0 line vty 0 1 password cisco line vty 2 4 ! end Paris# Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=25131t=25129 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ISDN backup will not activate [7:25129]
What are the results of show int bri0 and show isdn status? That might alert you to the problem. If you've posted the entire config then you definitely are missing at least one very important thing. Look at the results of that output and let us know if the router is even talking to the ISDN switch at the telco. (hint hint) :-) thanks, John nettable_walker 11/2/01 3:27:31 PM 11/2/2001 4:30pm Friday Professional's, I would like to get traffic from Paris to use ISDN when the primary link goes done. When the serial link goes down the ISDN never comes up. I even added a static route to send ALL traffic from the ethernet to the BRI and the BRI is not coming up! I did a clear ip route * to no avail. Any ideas ? I am sure it is a simple detail. Config follows: Paris#sho run Building configuration... Current configuration : 1457 bytes ! version 12.2 no service single-slot-reload-enable service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname Paris ! logging rate-limit console 10 except errors aaa new-model aaa authentication login default local aaa authentication login NO_AUTHEN none aaa authentication ppp default if-needed local enable password cisco ! username New_York_City password 0 cisco username richard password 0 cisco username kaiser password 0 cisco ip subnet-zero no ip finger ! no ip dhcp-client network-discovery ! ! ! ! interface Ethernet0 description line to ftp server ip address 10.0.0.1 255.0.0.0 ! interface Serial0 description line to 2522_router ip address 170.17.1.2 255.255.0.0 no fair-queue ! interface Serial1 no ip address shutdown ! interface BRI0 ip address 172.20.10.1 255.255.255.0 encapsulation ppp dialer idle-timeout 900 dialer map ip 172.20.10.2 name New_York_City broadcast dialer-group 1 isdn spid1 isdn spid2 isdn x25 static-tei 0 cdapi buffers regular 0 cdapi buffers raw 0 cdapi buffers large 0 ppp authentication chap ppp multilink ! router eigrp 100 network 10.0.0.0 network 170.17.0.0 auto-summary no eigrp log-neighbor-changes ! ip kerberos source-interface any ip classless ip route 10.0.0.0 255.255.255.255 BRI0 ip http server ! dialer-list 1 protocol ip permit ! ! line con 0 transport input none line aux 0 line vty 0 1 password cisco line vty 2 4 ! end Paris# Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=25133t=25129 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ISDN backup will not activate [7:25129]
Where's the phone number to dial? I've always used a phone number after the broadcast statement. Like the following: dialer map ip 172.20.10.2 name New_York_City broadcast 17775551212 HTH Darren At 05:27 PM 11/2/2001 -0500, nettable_walker wrote: 11/2/2001 4:30pm Friday Professional's, I would like to get traffic from Paris to use ISDN when the primary link goes done. When the serial link goes down the ISDN never comes up. I even added a static route to send ALL traffic from the ethernet to the BRI and the BRI is not coming up! I did a clear ip route * to no avail. Any ideas ? I am sure it is a simple detail. Config follows: Paris#sho run Building configuration... Current configuration : 1457 bytes ! version 12.2 no service single-slot-reload-enable service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname Paris ! logging rate-limit console 10 except errors aaa new-model aaa authentication login default local aaa authentication login NO_AUTHEN none aaa authentication ppp default if-needed local enable password cisco ! username New_York_City password 0 cisco username richard password 0 cisco username kaiser password 0 cisco ip subnet-zero no ip finger ! no ip dhcp-client network-discovery ! ! ! ! interface Ethernet0 description line to ftp server ip address 10.0.0.1 255.0.0.0 ! interface Serial0 description line to 2522_router ip address 170.17.1.2 255.255.0.0 no fair-queue ! interface Serial1 no ip address shutdown ! interface BRI0 ip address 172.20.10.1 255.255.255.0 encapsulation ppp dialer idle-timeout 900 dialer map ip 172.20.10.2 name New_York_City broadcast dialer-group 1 isdn spid1 isdn spid2 isdn x25 static-tei 0 cdapi buffers regular 0 cdapi buffers raw 0 cdapi buffers large 0 ppp authentication chap ppp multilink ! router eigrp 100 network 10.0.0.0 network 170.17.0.0 auto-summary no eigrp log-neighbor-changes ! ip kerberos source-interface any ip classless ip route 10.0.0.0 255.255.255.255 BRI0 ip http server ! dialer-list 1 protocol ip permit ! ! line con 0 transport input none line aux 0 line vty 0 1 password cisco line vty 2 4 ! end Paris# x$:0`0:$xx$:0`0:$xx$:0`0:$xx$:0`0:$x$:0`0:$xx$:0`0:$xx Lucent Technologies NetworkCare Professional Services http//www.lucent.com/netcare/ Darren S. Crawford - CCNA, CCDA, CCIE Written Northwest Region - Sacramento Office Voicemail (916) 859-5200 x310 Pager (800) 467-1467 mailto:[EMAIL PROTECTED] x$:0`0:$xx$:0`0:$xx$:0`0:$xx$:0`0:$x$:0`0:$xx$:0`0:$xx You always have time for things you put first - Tucker Resources Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=25138t=25129 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ISDN backup will not activate [7:25129]
You have no dial string and you also need to tell the router what interface you want backed up or use a floating static. nettable_walker wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... 11/2/2001 4:30pm Friday Professional's, I would like to get traffic from Paris to use ISDN when the primary link goes done. When the serial link goes down the ISDN never comes up. I even added a static route to send ALL traffic from the ethernet to the BRI and the BRI is not coming up! I did a clear ip route * to no avail. Any ideas ? I am sure it is a simple detail. Config follows: Paris#sho run Building configuration... Current configuration : 1457 bytes ! version 12.2 no service single-slot-reload-enable service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname Paris ! logging rate-limit console 10 except errors aaa new-model aaa authentication login default local aaa authentication login NO_AUTHEN none aaa authentication ppp default if-needed local enable password cisco ! username New_York_City password 0 cisco username richard password 0 cisco username kaiser password 0 cisco ip subnet-zero no ip finger ! no ip dhcp-client network-discovery ! ! ! ! interface Ethernet0 description line to ftp server ip address 10.0.0.1 255.0.0.0 ! interface Serial0 description line to 2522_router ip address 170.17.1.2 255.255.0.0 no fair-queue ! interface Serial1 no ip address shutdown ! interface BRI0 ip address 172.20.10.1 255.255.255.0 encapsulation ppp dialer idle-timeout 900 dialer map ip 172.20.10.2 name New_York_City broadcast dialer-group 1 isdn spid1 isdn spid2 isdn x25 static-tei 0 cdapi buffers regular 0 cdapi buffers raw 0 cdapi buffers large 0 ppp authentication chap ppp multilink ! router eigrp 100 network 10.0.0.0 network 170.17.0.0 auto-summary no eigrp log-neighbor-changes ! ip kerberos source-interface any ip classless ip route 10.0.0.0 255.255.255.255 BRI0 ip http server ! dialer-list 1 protocol ip permit ! ! line con 0 transport input none line aux 0 line vty 0 1 password cisco line vty 2 4 ! end Paris# Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=25148t=25129 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ISDN backup will not activate [7:25129]
I've seen the other replies to you post, and I'll give you a few other pieces of input. By the way, you really didn't give us any indication of what you saw as the output from the router - I'll just assume that you saw nothing. 1. From the configuration, it is not obvious what kind of ISDN switch you're using. Do you know if you need to add a statement to define the switch type? (I'd guess yes, unless the rules changed in 12.2) 2. Someone else indicated that you need to check the ISDN status using the appropriate show command. You'll learn something from doing that check. Mostly, you'll learn how to read the status of the ISDN circuit, and what the different fields indicate on the results of the show isdn status command. Learning the debug commands (debug isdn q921, debug isdn q931) are also valuable tools. Learn to use them to diagnose a problem. 3. Look at the purpose of the dialer map statement. Someone else indicated that you need to configure a destination phone number for that. I agree with that indication. Paris doesn't know what number to dial to reach New_York_City. 4. Someone suggested using backup-interface. I'd counsel you NOT to go down that road until you have the point-to-point ISDN configuration stable and it's coming up when you want it to. 5. Another person suggested that you add an administrative distance to your static route. That would be a good idea. When you do that, your ISDN circuit will come up only when the route for the serial link goes away (assuming that it's the only route to the other router) 6. Some switches prefer/require that you suffix the dialing numbers to the SPID assignments. Learn which switches need that kind of input. 7. What other resources have you used to learn configuration of ISDN? There are different layers of ISDN configuration. They are, in order of bottom to top: a. the ISDN physical connection itself (S/T interfaces require NT-1's or a simulator that has an S/T interface, U interfaces have a built-in NT-1) Cisco 2500 series routers (except the 2524/2525) have an S/T interface. The 2524/2525 has two flavors of modular BRI, S/T or U. Cisco 4000 series NP-4B and NP-8B have S/T interfaces. I'm not sure about the 26/3600 series, but I'm sure someone else on the list does know and might be willing to share that info. b. ISDN interface establishing communication with the ISDN switch (q921 signalling - requires the correct ISDN switch type configured and the proper physical connection) c. ISDN interface obtaining TEI (q931 signalling-requires the ISDN SPIDs configured properly) d. triggering the interface to dial (either IP or backup-interface or snapshot routing, requires the dialer-map and dialer-lists configured properly) e. encapsulation negotiation (ppp-requires both routers have a common encapsulation) f. authentication (chap-requires username/passwords used in the dialer-map statements match on both routers) g. IP routing (static or dynamic routes) over the interface (requires routing protocol including static to route to the correct destinations via the BRI interfaces). h. establishing multilink (requires the dialer-load statement) 8. Extraneous commands in a BRI configuration sometimes spell disaster, so take out anything that you don't absolutely need from a basic's perspective. Otherwise, your configuration is a good start. Unfortuately, incomplete BRI configurations don't work, and don't give you any indication of why they don't work. I'll refer you to a very valuable resource, which I still use when I get stuck on an ISDN configuration. It's Cisco's TAC page for ISDN Technology: http://www.cisco.com/pcgi-bin/Support/PSP/psp_view.pl?p=Internetworking:ISDN (watch the URL wrap) Here's a page with a very basic configuration that you can learn from, step by step: http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/dial ts_c/dtsprt3/dcdbri.htm (watch the URL wrap) ISDN is a very complex configuration until you've mastered the basics, which means understanding the different layers of BRI configuration. I'd suggest that you study these pages, and then if it still doesn't work, c'mon back and post the configurations from both routers and the results of some of the show commands that you'll learn from reading the basic's pages. Good luck in your studies, and let us know what you learn about ISDN. -e- - Original Message - From: nettable_walker To: Sent: Friday, November 02, 2001 5:27 PM Subject: ISDN backup will not activate [7:25129] 11/2/2001 4:30pm Friday Professional's, I would like to get traffic from Paris to use ISDN when the primary link goes done. When the serial link goes down the ISDN never comes up. I even added a static route to send ALL traffic from the ethernet to the BRI and the BRI is not coming up! I did a clear ip route * to no avail. Any ideas ? I am sure it is a simple detail. Config follows: Paris#sho run Building
Re: ISDN backup will not activate [7:25129]
Your making it too hard, you don't need the dialer map but you do need a dialer string 1800111. Your not telling the interface where to call. Dave nettable_walker wrote: 11/2/2001 4:30pm Friday Professional's, I would like to get traffic from Paris to use ISDN when the primary link goes done. When the serial link goes down the ISDN never comes up. I even added a static route to send ALL traffic from the ethernet to the BRI and the BRI is not coming up! I did a clear ip route * to no avail. Any ideas ? I am sure it is a simple detail. Config follows: Paris#sho run Building configuration... Current configuration : 1457 bytes ! version 12.2 no service single-slot-reload-enable service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname Paris ! logging rate-limit console 10 except errors aaa new-model aaa authentication login default local aaa authentication login NO_AUTHEN none aaa authentication ppp default if-needed local enable password cisco ! username New_York_City password 0 cisco username richard password 0 cisco username kaiser password 0 cisco ip subnet-zero no ip finger ! no ip dhcp-client network-discovery ! ! ! ! interface Ethernet0 description line to ftp server ip address 10.0.0.1 255.0.0.0 ! interface Serial0 description line to 2522_router ip address 170.17.1.2 255.255.0.0 no fair-queue ! interface Serial1 no ip address shutdown ! interface BRI0 ip address 172.20.10.1 255.255.255.0 encapsulation ppp dialer idle-timeout 900 dialer map ip 172.20.10.2 name New_York_City broadcast dialer-group 1 isdn spid1 isdn spid2 isdn x25 static-tei 0 cdapi buffers regular 0 cdapi buffers raw 0 cdapi buffers large 0 ppp authentication chap ppp multilink ! router eigrp 100 network 10.0.0.0 network 170.17.0.0 auto-summary no eigrp log-neighbor-changes ! ip kerberos source-interface any ip classless ip route 10.0.0.0 255.255.255.255 BRI0 ip http server ! dialer-list 1 protocol ip permit ! ! line con 0 transport input none line aux 0 line vty 0 1 password cisco line vty 2 4 ! end Paris# -- David Madland CCIE# 2016 Senior Network Engineer Qwest Communications 612-664-3367 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=25160t=25129 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ISDN backup problem [7:19894]
Alvin, If I'm not mistaken you BRI circuits should have two(2) channels. Why not simply set R1 to dial the core on the 1st channel and R2 on the 2nd. Of course you would have to change the configuration on your core router for to support Dialer Profiles so you could receive both calls simultaneously If made the config additions you'll need below. I don't know what routing protocol you're using if any so I'd suggest using floating statics so as long as the primary path is down the ISDN circuit will be the default path out of the network. If there's a dynamic routing protocol(I'm thinking based on the broadcast keyword in the BRI config) already running between the core router and R1 and R2, I'm assuming the ISDN isn't configured based on you're use of the backup interface command. Anyway, just some thoughts and things to consider... NOTE: *** You could look at creating a loopback interface on the core router and using the ip unnumbered loopback command under the dialer profiles for each connection this way you maintain the existing IP scheme. The configs for R1 and R2 should stay pretty much the same except R1 will use the # for BRI line 1 on the CORE router and R2 will use the 2nd.. Router_CORE interface BRI4/0 no ip address encapsulation ppp dialer pool-member 1 isdn switch-type basic-net3 ppp authentication chap hold-queue 75 in interface Dialer1 dialer string dialer-group 1 dialer pool 1 isdn switch-type basic-net3 ppp authentication chap hold-queue 75 in b interface Dialer1 dialer string dialer-group 2 dialer pool 1 isdn switch-type basic-net3 ppp authentication chap hold-queue 75 in dialer-list 1 protocol ip permit dialer-list 2 protocol ip list 101 access-list 101 permit ip any any - Original Message - From: Alvin Chong To: Sent: Thursday, September 13, 2001 10:41 PM Subject: ISDN backup problem [7:19894] Hi all, I have a core router connected to 2 other regional routers, with only 1 ISDN backup. The config is as below: Unfortunately these 2 regional routers down at the same time and both keep trying to dial up the ISDN line. The result is both of them unable to get the connection. What should I do at the very first step? Pls advice. Thanks Router1 interface Serial0/0 backup delay 0 10 backup interface BRI0/0 ip address 172.200.100.50 255.255.255.252 no ip mroute-cache service-policy output llq ip rtp header-compression ! interface BRI0/0 ip address 172.200.95.3 255.255.255.240 encapsulation ppp dialer map ip 172.200.95.1 name Router_CORE broadcast 12345678 dialer load-threshold 20 outbound dialer-group 1 isdn switch-type basic-net3 ppp authentication chap Router2 interface Serial0/0 backup delay 0 10 backup interface BRI0/0 ip address 172.200.100.54 255.255.255.252 no ip mroute-cache service-policy output llq ip rtp header-compression ! interface BRI0/0 ip address 172.200.95.2 255.255.255.240 encapsulation ppp dialer map ip 172.200.95.1 name Router_CORE broadcast 12345678 dialer load-threshold 20 outbound dialer-group 1 isdn switch-type basic-net3 ppp authentication chap Router_CORE interface BRI4/0 ip address 172.200.95.1 255.255.255.240 encapsulation ppp dialer map ip 172.200.95.2 name Router1 broadcast dialer map ip 172.200.95.3 name Router2 broadcast dialer-group 1 isdn switch-type basic-net3 ppp authentication chap hold-queue 75 in regards alvin chong __ Terrorist Attacks on U.S. - How can you help? Donate cash, emergency relief information http://dailynews.yahoo.com/fc/US/Emergency_Information/ Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=19898t=19894 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: ISDN Backup [7:14148]
router a--routerb ok username routerb password same int e0/0 - 10.4.10.50 255.255.255.0 int so/0 - 192.168.1.1 255.255.255.252 backup interface dialer0 backup delay 60 40 backup load 128 20 int dialer 1 ip unnumbered e0 dialer group 1 dialer string dialer remote name routerb dialer pool 1 encapsulation ppp ppp authentication chap dialer load threshold 128 either ppp multilink dilaer hold-queue 10 int bri 0 encapsulation ppp ppp authentication chap dialer pool-member 1 dilaer-list 1 protocol ip list 101 access list 101 permit ip any any router eigrp 100 redistribute static network 10.4.10.0 network 192.168.1.0 passive interface dialer 0 ip route ( your remote network ) 192.168.1.2 let me know Best Regards Have A Good Day!! *** Farhan Ahmed* MCSE+I, MCP Win2k, CCDA, CCNA, CSE Network Engineer Mideast Data Systems Abudhabi Uae. *** Privileged/Confidential Information may be contained in this message or Attachments hereto. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind. Opinions, Conclusions and other information in this message that do not relate to the Official business of this company shall be understood as neither given nor Endorsed by it. -Original Message- From: Uttam Majumdar [mailto:[EMAIL PROTECTED]] Sent: Monday, July 30, 2001 4:10 PM To: [EMAIL PROTECTED] Subject: ISDN Backup [7:14148] Hi All, I am not able communicate between 2 routers when connected using the ISDN backup of a leased connection. My router IP's are - Router A S0/0 - 192.168.1.1 255.255.255.252 E0/0 - 10.4.10.50 255.255.255.0 ISDN - IP Unnumbered. Router B S0 - 192.168.1.2 255.255.255.252 E0 - 10.4.0.30 255.255.255.0 ISDN - IP Unnumbered. I hv used RIP for Networks - 10.0.0.0 192.168.0.0 Also hv used backup with dialer map. Please treat urgent Friends Thanks Uttam [GroupStudy.com removed an attachment of type text/x-vcard which had a name of karuna_nrich.vcf] [GroupStudy.com removed an attachment of type application/octet-stream which had a name of Farhan Ahmed.vcf] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=14159t=14148 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ISDN Backup [7:4462]
Great idea! Now, if only you didn't have to pay for an ISDN usage charges since you're calling yourself ;-) -- Jason Roysdon, CCNP+Security/CCDP, MCSE, CNA, Network+, A+ List email: [EMAIL PROTECTED] Homepage: http://jason.artoo.net/ Ambern, Jeff wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Just wanted to let the group know of a little trick I came across this weekend. I have an ISDN line that I hooked up to a NT1 with two S/T interfaces. I was able to connect 2 2504's back to back through the telco cloud. Each router pulled one TEI each. This makes it possible to perform dial-backup and other isdn simulations without paying for 2 isdn lines (just can't do multilink) or buying an expensive ISDN sumulator. Just thought I would share because I have never come across this configuration before. Jeff Ambern FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=4463t=4462 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ISDN Backup [7:4462]
Hi Depends who your provider is. For example in QWest land all local ISDN calls are not charged a usage fee. HTH -- John Hardman CCNP MCSE Jason Roysdon wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Great idea! Now, if only you didn't have to pay for an ISDN usage charges since you're calling yourself ;-) -- Jason Roysdon, CCNP+Security/CCDP, MCSE, CNA, Network+, A+ List email: [EMAIL PROTECTED] Homepage: http://jason.artoo.net/ Ambern, Jeff wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Just wanted to let the group know of a little trick I came across this weekend. I have an ISDN line that I hooked up to a NT1 with two S/T interfaces. I was able to connect 2 2504's back to back through the telco cloud. Each router pulled one TEI each. This makes it possible to perform dial-backup and other isdn simulations without paying for 2 isdn lines (just can't do multilink) or buying an expensive ISDN sumulator. Just thought I would share because I have never come across this configuration before. Jeff Ambern 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] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=4476t=4462 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ISDN Backup [7:4462]
Very cool. I know within our company custom Centrex group that's the case as well, but not all local calls, just calls between our Centrex lines. -- Jason Roysdon, CCNP+Security/CCDP, MCSE, CNA, Network+, A+ List email: [EMAIL PROTECTED] Homepage: http://jason.artoo.net/ John Hardman wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Hi Depends who your provider is. For example in QWest land all local ISDN calls are not charged a usage fee. HTH -- John Hardman CCNP MCSE Jason Roysdon wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Great idea! Now, if only you didn't have to pay for an ISDN usage charges since you're calling yourself ;-) -- Jason Roysdon, CCNP+Security/CCDP, MCSE, CNA, Network+, A+ List email: [EMAIL PROTECTED] Homepage: http://jason.artoo.net/ Ambern, Jeff wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Just wanted to let the group know of a little trick I came across this weekend. I have an ISDN line that I hooked up to a NT1 with two S/T interfaces. I was able to connect 2 2504's back to back through the telco cloud. Each router pulled one TEI each. This makes it possible to perform dial-backup and other isdn simulations without paying for 2 isdn lines (just can't do multilink) or buying an expensive ISDN sumulator. Just thought I would share because I have never come across this configuration before. Jeff Ambern 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] FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=4478t=4462 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ISDN Backup [7:4462]
Yes, its worthwhile. Alot of people find that paying for an NT1 and an ISDN line is cheaper than the simulator. But with the simulator you can do dial-backup, BOD, multilink, etc. Brian On Mon, 14 May 2001, Ambern, Jeff wrote: Just wanted to let the group know of a little trick I came across this weekend. I have an ISDN line that I hooked up to a NT1 with two S/T interfaces. I was able to connect 2 2504's back to back through the telco cloud. Each router pulled one TEI each. This makes it possible to perform dial-backup and other isdn simulations without paying for 2 isdn lines (just can't do multilink) or buying an expensive ISDN sumulator. Just thought I would share because I have never come across this configuration before. Jeff Ambern FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] --- I'm buying / selling used CISCO gear!! email me for a quote Brian Feeny,CCDP,CCNP+VAS Scarlett Parria [EMAIL PROTECTED] [EMAIL PROTECTED] 318-213-4709 318-213-4701 Netjam, LLC http://www.netjam.net 333 Texas St. VISA/MC/AMEX/COD Suite 140130 day warranty Shreveport, LA 71101 Cisco Channel Partner p: 318-212-0245 f: 318-212-0246 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=4486t=4462 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ISDN Backup
HI Savvras, I have done with a Cisco 1603R with IOS 12.07 and works fine. I have configured an ISDN as a serial backup. Regards. Pere Pla ""Savvas Themistocleous"" [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Hi again, Does the fact that I am using a 1603 instead of a 2600 or 1601 make a difference. Regards Savvas _ 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: Re : ISDN Backup
You don't need to use the backup delay command if you're using floating static routes for backup, in fact I'm not sure that it will actually do anything (how does it know what the secondary interface is without a backup interface command?), but I've never actually tried using it with floating statics. Using floating statics, how quickly the backup line kicks in should depend on the convergence time of your routing protocol and design. EIGRP should be pretty quick, generally. What puzzles me, though, is the statement 'isdn backup is not able to activate (momentarily activates and then disconnects)'. Do you mean that the ISDN call doesn't work, or that the call is disconnecting before the idle timer expires or what? Generally (depending on bits of the config that you haven't shown), if the serial link goes down for long enough for the routing table to point to the ISDN instead, the ISDN will call and will stay up for at least 120 seconds (default idle time), even if the routing quickly reconverges back to the serial. If the serial link goes down (or has errors) for such a short period that the routing table does not point to the ISDN, then the ISDN won't call at all. Does it work OK when the serial link goes down and stays down? If so, how quickly does the ISDN activate? If the serial link is flapping, is the ISDN call (including PPP negotiation if you're using PPP) successful? debug isdn q931 and debug ppp neg or debug ppp auth may show any connection problems, and debug dialer may show why it is disconnecting. JMcL -- Forwarded by Jenny Mcleod/NSO/CSDA on 14/12/2000 09:06 am --- Jim Barksdale [EMAIL PROTECTED]@groupstudy.com on 14/12/2000 04:28:45 am Please respond to Jim Barksdale [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] To: [EMAIL PROTECTED] cc: Subject: Re: Re : ISDN Backup You do not have to use the BACKUP INTERFACE command, that is just another way of doing it. I like the floating static commands much better, I can test the ISDN connectivity without having to take the serial interface down. And the Backup Interface command does not work very well in a frame relay situation. I do agree you need to add the commands for Backup Delay, both for going to ISDN and going back to the primary. As for preventing the WWW traffic when on ISDN, apply an access list to the BRI to prevent it. Taiwo Adeshugba wrote: I think you are missing some commands from the config on your router. if you want to back up the interface you have to use the BACKUP INTERFACE command on the primary interface. And to have a threshold level you need to use the command BACKUP DELAY, and for the threshold you need to use the command BACKUP LOAD which will be a percentage of the primary line's available bandwidth that the traffic load must exceed to enable dial backup. The best thing is to send the output of the Running congfig and we can take it from there as I think I am walking blindly into this. Tai -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Amit Gupta Sent: 13 December 2000 11:27 To: [EMAIL PROTECTED] Subject: Re : ISDN Backup Hi All, I am using the following config on my router. router eigrp xxx redistribute static passive-interface BRI1/0 network x.x.x.x distribute-list 2 out Serial0/0 ! ip route 0.0.0.0 0.0.0.0 Serial0/0 ip route 0.0.0.0 0.0.0.0 bri1/0 150 I am using ISDN as the backup interface. The problem is that when my Serial link is erratic (not down), isdn backup is not able to activate (momentarily activates and then disconnects) what feature should I use to activate my backup immediately as soon as it senses a break in the serial link. Can I set some threshold level? Secondly I wanted to stop the www traffic when my ISDN backup is up ?? Any suggestions. Thanks Regards Amit __ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.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] _ 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 : ISDN Backup
Hi jenny, Yes, I agree that with floating static routes backup delay command would not work. When my serial link is completely down then the ISDN backup works perfectly well. It is only when the serial link is flapping that the real problem comes up as neither the condition of the link is good enough to handle the load nor does it allow ISDN to takeover. In such situations how can I prevent downtime by allowing the ISDN to take the load. Secondly I wanted to increase the ISDN bandwidth by adding more ISDN lines.( The present bw is 128kbps (multilink enabled) Any hints/suggestions on that would also be appreciated. Thanks Regards Amit You don't need to use the backup delay command if you're using floating static routes for backup, in fact I'm not sure that it will actually do anything (how does it know what the secondary interface is without a backup interface command?), but I've never actually tried using it with floating statics. Using floating statics, how quickly the backup line kicks in should depend on the convergence time of your routing protocol and design. EIGRP should be pretty quick, generally. What puzzles me, though, is the statement 'isdn backup is not able to activate (momentarily activates and then disconnects)'. Do you mean that the ISDN call doesn't work, or that the call is disconnecting before the idle timer expires or what? Generally (depending on bits of the config that you haven't shown), if the serial link goes down for long enough for the routing table to point to the ISDN instead, the ISDN will call and will stay up for at least 120 seconds (default idle time), even if the routing quickly reconverges back to the serial. If the serial link goes down (or has errors) for such a short period that the routing table does not point to the ISDN, then the ISDN won't call at all. Does it work OK when the serial link goes down and stays down? If so, how quickly does the ISDN activate? If the serial link is flapping, is the ISDN call (including PPP negotiation if you're using PPP) successful? debug isdn q931 and debug ppp neg or debug ppp auth may show any connection problems, and debug dialer may show why it is disconnecting. JMcL -- Forwarded by Jenny Mcleod/NSO/CSDA on 14/12/2000 09:06 am --- Jim Barksdale [EMAIL PROTECTED]@groupstudy.com on 14/12/2000 04:28:45 am Please respond to Jim Barksdale [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] To: [EMAIL PROTECTED] cc: Subject: Re: Re : ISDN Backup You do not have to use the BACKUP INTERFACE command, that is just another way of doing it. I like the floating static commands much better, I can test the ISDN connectivity without having to take the serial interface down. And the Backup Interface command does not work very well in a frame relay situation. I do agree you need to add the commands for Backup Delay, both for going to ISDN and going back to the primary. As for preventing the WWW traffic when on ISDN, apply an access list to the BRI to prevent it. Taiwo Adeshugba wrote: I think you are missing some commands from the config on your router. if you want to back up the interface you have to use the BACKUP INTERFACE command on the primary interface. And to have a threshold level you need to use the command BACKUP DELAY, and for the threshold you need to use the command BACKUP LOAD which will be a percentage of the primary line's available bandwidth that the traffic load must exceed to enable dial backup. The best thing is to send the output of the Running congfig and we can take it from there as I think I am walking blindly into this. Tai -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Amit Gupta Sent: 13 December 2000 11:27 To: [EMAIL PROTECTED] Subject: Re : ISDN Backup Hi All, I am using the following config on my router. router eigrp xxx redistribute static passive-interface BRI1/0 network x.x.x.x distribute-list 2 out Serial0/0 ! ip route 0.0.0.0 0.0.0.0 Serial0/0 ip route 0.0.0.0 0.0.0.0 bri1/0 150 I am using ISDN as the backup interface. The problem is that when my Serial link is erratic (not down), isdn backup is not able to activate (momentarily activates and then disconnects) what feature should I use to activate my backup immediately as soon as it senses a break in the serial link. Can I set some threshold level? Secondly I wanted to stop the www traffic when my ISDN backup is up ?? Any suggestions. Thanks Regards Amit __ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re : ISDN Backup
Hi All, I am using the following config on my router. router eigrp xxx redistribute static passive-interface BRI1/0 network x.x.x.x distribute-list 2 out Serial0/0 ! ip route 0.0.0.0 0.0.0.0 Serial0/0 ip route 0.0.0.0 0.0.0.0 bri1/0 150 I am using ISDN as the backup interface. The problem is that when my Serial link is erratic (not down), isdn backup is not able to activate (momentarily activates and then disconnects) what feature should I use to activate my backup immediately as soon as it senses a break in the serial link. Can I set some threshold level? Secondly I wanted to stop the www traffic when my ISDN backup is up ?? Any suggestions. Thanks Regards Amit __ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Re : ISDN Backup
I think you are missing some commands from the config on your router. if you want to back up the interface you have to use the BACKUP INTERFACE command on the primary interface. And to have a threshold level you need to use the command BACKUP DELAY, and for the threshold you need to use the command BACKUP LOAD which will be a percentage of the primary line's available bandwidth that the traffic load must exceed to enable dial backup. The best thing is to send the output of the Running congfig and we can take it from there as I think I am walking blindly into this. Tai -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Amit Gupta Sent: 13 December 2000 11:27 To: [EMAIL PROTECTED] Subject: Re : ISDN Backup Hi All, I am using the following config on my router. router eigrp xxx redistribute static passive-interface BRI1/0 network x.x.x.x distribute-list 2 out Serial0/0 ! ip route 0.0.0.0 0.0.0.0 Serial0/0 ip route 0.0.0.0 0.0.0.0 bri1/0 150 I am using ISDN as the backup interface. The problem is that when my Serial link is erratic (not down), isdn backup is not able to activate (momentarily activates and then disconnects) what feature should I use to activate my backup immediately as soon as it senses a break in the serial link. Can I set some threshold level? Secondly I wanted to stop the www traffic when my ISDN backup is up ?? Any suggestions. Thanks Regards Amit __ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.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: Re : ISDN Backup
You do not have to use the BACKUP INTERFACE command, that is just another way of doing it. I like the floating static commands much better, I can test the ISDN connectivity without having to take the serial interface down. And the Backup Interface command does not work very well in a frame relay situation. I do agree you need to add the commands for Backup Delay, both for going to ISDN and going back to the primary. As for preventing the WWW traffic when on ISDN, apply an access list to the BRI to prevent it. Taiwo Adeshugba wrote: I think you are missing some commands from the config on your router. if you want to back up the interface you have to use the BACKUP INTERFACE command on the primary interface. And to have a threshold level you need to use the command BACKUP DELAY, and for the threshold you need to use the command BACKUP LOAD which will be a percentage of the primary line's available bandwidth that the traffic load must exceed to enable dial backup. The best thing is to send the output of the Running congfig and we can take it from there as I think I am walking blindly into this. Tai -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Amit Gupta Sent: 13 December 2000 11:27 To: [EMAIL PROTECTED] Subject: Re : ISDN Backup Hi All, I am using the following config on my router. router eigrp xxx redistribute static passive-interface BRI1/0 network x.x.x.x distribute-list 2 out Serial0/0 ! ip route 0.0.0.0 0.0.0.0 Serial0/0 ip route 0.0.0.0 0.0.0.0 bri1/0 150 I am using ISDN as the backup interface. The problem is that when my Serial link is erratic (not down), isdn backup is not able to activate (momentarily activates and then disconnects) what feature should I use to activate my backup immediately as soon as it senses a break in the serial link. Can I set some threshold level? Secondly I wanted to stop the www traffic when my ISDN backup is up ?? Any suggestions. Thanks Regards Amit __ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.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] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ISDN Backup
Why would you need to have primary router and backup router implementing HSRP even if you had primary interface and backup interface? You could do it with one router instead of two. jw --- michael owuor [EMAIL PROTECTED] wrote: Chris, What are the specific problems you are seeing the T1 comes back up? The only routing issues I would look for would be to make sure you have recursive routing configured wherever you have IP unnumbered configured. Either that, or I would get rid of ip unnumbered alltogether since this is a private network, and there is no risk of running out of IP address space. Does the ISDN router have a recursive host route to the 2.1 address which says it is reachable through the BRI/dialer? I think the easiest/cleanest way to do his would be to run the routing protocol, and have the Remote ISDN router do the dialing when needed. Have the Central router advertise a default route to the Remote T1 router, which would also have the floating default route pointing to the ISDN Router. When the T1 connection is lost, the floating static route is installed, and traffic is directed to the ISDN router which only needs a static default route going out its BRI. Since the remote routers share a LAN segment, you could also look into implementing HSRP where the Remote T1 router is confiured as the active router, and therefore receives all traffic from the LAN users who need to get to the Central site. If that router fails, or if the T1 interface goes down, the ISDN router now becomes the active router and receives the traffic from the LAN users and sends it out the ISDN interface. A combination of floating static routes with a dynamic rouing protocol and HSRP is a good design to go with, since you achive redundancy on layer 1, 2 and 3. Floating statics with a routing protocol ensure the Remote T1 router is notified when, for example, the T1 interface on the central site goes down. In such a case, the T1 interface on the Remote could stay up and floating statics alone would not notify the Remote T1 router of the loss of connection. The dynamic routing protocol will. HSRP allows the ISDN router to be notified when the T1 interface or the ethernet interface on the Remote T1 router goes down, or when the entire router fails. michael a.o From: "Chris Sees" [EMAIL PROTECTED] Reply-To: "Chris Sees" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: ISDN Backup Date: Thu, 9 Nov 2000 14:21:21 -0500 Hi, I'm having some issues with ISDN backup failover and hopefully someone has done this before. -Central site with a dedicated T1 through serial int. to Remote site router -Central site also has a ISDN to Remote site to a second router The Central serial has the BRI as a backup. Also, we are NOT using RIP (although this is not out of the question) When we pull the T1 the ISDN comes up and everything seems fine. But when the T1 is put back, there are very weird things happening. I'm pretty sure its routing, so I've include the route commands of each router. Any thoughts, ideas, suggestions would be greatly appreciated. Thanks. Chris Central Router 0.0.0.0 0.0.0.0 192.168.2.10 ---This route goes to the internet ip route 192.168.1.0 255.255.255.0 123.123.123.1 -- This goes to the Remote site through the T1 router ip route 192.168.1.0 255.255.255.0 Dialer1 50 -- This goes to Remote site through ISDN router Remote Site T1 Router ip route 0.0.0.0 0.0.0.0 123.123.123.2 - Goes to Central T1 ip route 0.0.0.0 0.0.0.0 192.168.1.2 50 - Goes to Central through Remote ISDN (192.168.1.2 is LAN side of ISDN router) Remote site ISDN Router ip route 0.0.0.0 0.0.0.0 192.168.2.1 - 2.1 is ethernet side of Central router (ipunnumbered over ISDN) Hope this is clear enough. _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com. _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] __ Do You Yahoo!? Thousands of Stores. Millions of Products. All in one Place. http://shopping.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to
Re: ISDN Backup
Chris, What are the specific problems you are seeing the T1 comes back up? The only routing issues I would look for would be to make sure you have recursive routing configured wherever you have IP unnumbered configured. Either that, or I would get rid of ip unnumbered alltogether since this is a private network, and there is no risk of running out of IP address space. Does the ISDN router have a recursive host route to the 2.1 address which says it is reachable through the BRI/dialer? I think the easiest/cleanest way to do his would be to run the routing protocol, and have the Remote ISDN router do the dialing when needed. Have the Central router advertise a default route to the Remote T1 router, which would also have the floating default route pointing to the ISDN Router. When the T1 connection is lost, the floating static route is installed, and traffic is directed to the ISDN router which only needs a static default route going out its BRI. Since the remote routers share a LAN segment, you could also look into implementing HSRP where the Remote T1 router is confiured as the active router, and therefore receives all traffic from the LAN users who need to get to the Central site. If that router fails, or if the T1 interface goes down, the ISDN router now becomes the active router and receives the traffic from the LAN users and sends it out the ISDN interface. A combination of floating static routes with a dynamic rouing protocol and HSRP is a good design to go with, since you achive redundancy on layer 1, 2 and 3. Floating statics with a routing protocol ensure the Remote T1 router is notified when, for example, the T1 interface on the central site goes down. In such a case, the T1 interface on the Remote could stay up and floating statics alone would not notify the Remote T1 router of the loss of connection. The dynamic routing protocol will. HSRP allows the ISDN router to be notified when the T1 interface or the ethernet interface on the Remote T1 router goes down, or when the entire router fails. michael a.o From: "Chris Sees" [EMAIL PROTECTED] Reply-To: "Chris Sees" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: ISDN Backup Date: Thu, 9 Nov 2000 14:21:21 -0500 Hi, I'm having some issues with ISDN backup failover and hopefully someone has done this before. -Central site with a dedicated T1 through serial int. to Remote site router -Central site also has a ISDN to Remote site to a second router The Central serial has the BRI as a backup. Also, we are NOT using RIP (although this is not out of the question) When we pull the T1 the ISDN comes up and everything seems fine. But when the T1 is put back, there are very weird things happening. I'm pretty sure its routing, so I've include the route commands of each router. Any thoughts, ideas, suggestions would be greatly appreciated. Thanks. Chris Central Router 0.0.0.0 0.0.0.0 192.168.2.10 ---This route goes to the internet ip route 192.168.1.0 255.255.255.0 123.123.123.1 -- This goes to the Remote site through the T1 router ip route 192.168.1.0 255.255.255.0 Dialer1 50 -- This goes to Remote site through ISDN router Remote Site T1 Router ip route 0.0.0.0 0.0.0.0 123.123.123.2 - Goes to Central T1 ip route 0.0.0.0 0.0.0.0 192.168.1.2 50 - Goes to Central through Remote ISDN (192.168.1.2 is LAN side of ISDN router) Remote site ISDN Router ip route 0.0.0.0 0.0.0.0 192.168.2.1 - 2.1 is ethernet side of Central router (ipunnumbered over ISDN) Hope this is clear enough. _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com. _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: isdn backup
What are you trying to backup here? I don't see any routing. Start with a working primary first and I can probably give you suggestions for a solution. Roughly, what you need are two static routes with different weights so the primary is favored, and the backup is much more costlier, or, set the dialer as the default route with a static 0.0.0.0 pointing to the primary, that way, when the primary disappears, the static leaves the table and the dialer goes up. remember to write an access list on the dialer to prevent dialing for RIP updates, etc. depending on what type of traffic you have traversing the router. -Erik - Original Message - From: "Clue Less" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, September 21, 2000 10:25 AM Subject: isdn backup | Greetings all, | | Got a question on routing with ISDN backup. Could | someone shed some light on how to properly implement | the backup command with routing? | | I'm using the backup command, and ip unnumber for both | primary and backup interfaces. | | int loop 0 R3 int s0/0-primary--int s2 R5 | int loop 0 (5.0.0.5) | int di1---backup---int di1 | | Below is config. | | What static route can I use to complete the routing to | the remote end? Because unnumbered addresses is use, | I'm unsure what the static route should look like. | The only thing I can think of is using floating | static, but that sort of defeat the purpose of the | backup command. | | | ClueLess | | ! | hostname r3 | ! | interface Loopback0 | ip address 3.0.0.3 255.255.255.0 | no ip directed-broadcast | ! | interface Serial0/0 | backup interface Dialer1 | ip unnumbered Loopback0 | no ip directed-broadcast | clockrate 64000 | ! | interface BRI0/0 | no ip address | no ip directed-broadcast | encapsulation ppp | dialer pool-member 3 | isdn switch-type basic-ts013 | isdn answer1 :3 | ppp authentication chap | ! | interface Dialer1 | ip unnumbered Loopback0 | no ip directed-broadcast | encapsulation ppp | dialer remote-name r5 | dialer string :5 | dialer pool 3 | dialer-group 1 | ppp authentication chap | ! | dialer-list 1 protocol ip permit | | r3#sh ip route | Codes: C - connected, S - static, I - IGRP, R - RIP, M | - mobile, B - BGP |D - EIGRP, EX - EIGRP external, O - OSPF, IA - | OSPF inter area |N1 - OSPF NSSA external type 1, N2 - OSPF NSSA | external type 2 |E1 - OSPF external type 1, E2 - OSPF external | type 2, E - EGP |i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS | level-2, * - candidate default |U - per-user static route, o - ODR | | Gateway of last resort is not set | | 3.0.0.0/24 is subnetted, 1 subnets | C 3.0.0.0 is directly connected, Loopback0 | r3# | **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: isdn backup
Hi Erik,
I am just trying this out at this stage. For discussion sake, say I
want to get from r3 to network 2.0.0.0 which is on ethernet of R5:
r3-s0/0--primarys2 r5 ---e1 (2.0.0.0/8)
di1---backup---di1
till using unnumber loop 0 for both primary and backup int.
If static route is to be use, what should it look like?
Your first solution below is using floating static, which I know it
would work. But is there a way to do it without floating static?
Cause if floating static is use, the "backup" command seems
unneccessary.
Not exactly sure what you mean on the second solution, could you
provide sample config?
I got eigrp instead of static route to work earlier, was a bit
surprise to see r3, r5 form neighbor even though they're on different
subnet. r3 (3.0.0.3) r5 (5.0.0.5). does anyone know if this is
right?
ClueLess.
On 21 Sep 2000 12:34:51 -0400, [EMAIL PROTECTED] ("Erik Mintz")
wrote:
What are you trying to backup here? I don't see any routing. Start with a
working primary first and I can probably give you suggestions for a
solution.
Roughly, what you need are two static routes with different weights so the
primary is favored, and the backup is much more costlier, or, set the dialer
as the default route with a static 0.0.0.0 pointing to the primary, that
way, when the primary disappears, the static leaves the table and the dialer
goes up. remember to write an access list on the dialer to prevent dialing
for RIP updates, etc. depending on what type of traffic you have traversing
the router.
-Erik
- Original Message -
From: "Clue Less" [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, September 21, 2000 10:25 AM
Subject: isdn backup
| Greetings all,
|
| Got a question on routing with ISDN backup. Could
| someone shed some light on how to properly implement
| the backup command with routing?
|
| I'm using the backup command, and ip unnumber for both
| primary and backup interfaces.
|
| int loop 0 R3 int s0/0-primary--int s2 R5
| int loop 0 (5.0.0.5)
| int di1---backup---int di1
|
| Below is config.
|
| What static route can I use to complete the routing to
| the remote end? Because unnumbered addresses is use,
| I'm unsure what the static route should look like.
| The only thing I can think of is using floating
| static, but that sort of defeat the purpose of the
| backup command.
|
|
| ClueLess
|
| !
| hostname r3
| !
| interface Loopback0
| ip address 3.0.0.3 255.255.255.0
| no ip directed-broadcast
| !
| interface Serial0/0
| backup interface Dialer1
| ip unnumbered Loopback0
| no ip directed-broadcast
| clockrate 64000
| !
| interface BRI0/0
| no ip address
| no ip directed-broadcast
| encapsulation ppp
| dialer pool-member 3
| isdn switch-type basic-ts013
| isdn answer1 :3
| ppp authentication chap
| !
| interface Dialer1
| ip unnumbered Loopback0
| no ip directed-broadcast
| encapsulation ppp
| dialer remote-name r5
| dialer string :5
| dialer pool 3
| dialer-group 1
| ppp authentication chap
| !
| dialer-list 1 protocol ip permit
|
| r3#sh ip route
| Codes: C - connected, S - static, I - IGRP, R - RIP, M
| - mobile, B - BGP
|D - EIGRP, EX - EIGRP external, O - OSPF, IA -
| OSPF inter area
|N1 - OSPF NSSA external type 1, N2 - OSPF NSSA
| external type 2
|E1 - OSPF external type 1, E2 - OSPF external
| type 2, E - EGP
|i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS
| level-2, * - candidate default
|U - per-user static route, o - ODR
|
| Gateway of last resort is not set
|
| 3.0.0.0/24 is subnetted, 1 subnets
| C 3.0.0.0 is directly connected, Loopback0
| r3#
|
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Re: ISDN Backup for ISDN BRI
If that is what you want to do which is not very effiecent, but...all you need to do is add another dialer string to the interface and then it will try the first dial string and then the next one and then next one and so on. - Original Message - From: "Radford Dion" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, August 21, 2000 1:10 PM Subject: ISDN Backup for ISDN BRI Hi everyone. Is there any way to backup a DDR ISDN line with the same ISDN line? Are you confused? me too! Basically I want the router to try dialing one number, and if it fails to connect, to then try dialing another number? Any help would be appreciated. Thanks, Dion ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: ISDN backup - Time based access lists or backup interface - help needed
Hi all. A client of mine has ISDN backup at all of their sites. A few leased line flaps during the night caused a rather large ISDN bill for the month. What I want to know is, is there a way to block the ISDN from dialling at night. The reason for this is that this is a sales office and is NOT active 24 hours. We need to have the ISDN line active from around 7am to 7pm, but there after it must NOT be able to dial. The way the backup ISDN is configured is by means of a default route out with a higher administrative distance - ip route 0.0.0.0 0.0.0.0 x.x.x.x 200. Routing process is eigrp. Are time based access lists a good option, and if so, how do I do it? OR Should I change the backup to "backup interface" and specify a longer delay before ISDN kicks in? All help appreciated Regards Andrew Larkins BCom, CCNA Usko Communications Tel: +2711 800-9300 Fax: +2711 800-9495/6/7/8/9 Cell: +2783-656-7214 Email: [EMAIL PROTECTED] OR [EMAIL PROTECTED] "This message may contain information which is confidential and subject to legal privilege. If you are not the intended recipient, you may not peruse, use, disseminate, distribute or copy this message. If you have received this message in error, please notify the sender immediately by email, facsimile or telephone and return and/or destroy the original message." ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: ISDN backup
Dear gang: I have the following situation: SiteA---SiteB---SiteC Site A, B, C are interconnected like above. Now I need to deploy ISDN backup. SiteC is a Cisco 3660, Site B, C are Cisco 1750 and have only one BRI interface each. Can I use the ISDN BRI link between SiteA and SiteC to prevent the primary link lost between Site A and Site B, that's mean, if the primary link between site A and siteB lost, the site A will activate the ISDN BRI backup to SiteC, do you think it can be realized? How to? Thanks very much. Cai ,land ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ISDN Backup
What statements are there in the configuration for each of the interfaces? --- "Khambay, Inderpal" [EMAIL PROTECTED] wrote: Please can somebody advise, I have ISDN lines on two Cisco Router on Two different site, configured as backup. When I take the main circuit down (at one end) the ISDN should come up.What is show in the "sh int bri0" is brio up line protocol is up (spoofing), and cannot ping the other end. An ideas. Thank you Regards Inderpal = Ben Lovegrove, CCNP Redspan Solutions Ltd Mail: [EMAIL PROTECTED] Web: http://www.redspan.com Forum: http://www.delphi.com/talknet/start/ Cisco Products, Internet Services, E-Commerce Software, URL Submissions Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
