RE: Route table question [7:32640]
In your running config do you have a statement like 'ip route 192.168.192.7 255.255.255.255 dialer 1' ? The interface, while logical as opposed to physical, acts as any other interface. And the rule that a static route to an interface is considered to be directly connected still applies. Andy Barkl wrote: I have my ISPs internal route showing as a connected route in my local route table. There is no exchange of dynamic routes or static. I am not using them for DHCP. They can't explain it either but I am hoping someone here has seen this before. Output listed below. Gateway of last resort is 0.0.0.0 to network 0.0.0.0 192.168.192.0/32 is subnetted, 1 subnets C 192.168.192.7 is directly connected, Dialer1 ((suspect route)) 208.xxx.xxx.xxx/32 is subnetted, 1 subnets C 208.xxx.xxx.xxx is directly connected, Dialer1 C192.168.1.0/24 is directly connected, Ethernet0 S* 0.0.0.0/0 is directly connected, Dialer1 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=32644t=32640 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Route table question [7:32660]
Are you using PPP on the dialer interface? PPP can install a route on your router. Tony M. #6172 - Original Message - From: Andy Barkl To: Sent: Sunday, January 20, 2002 5:39 PM Subject: Route table question [7:32660] I am baffled. There is an internal route of my ISPs showing as a connected route in my local route table. There is no exchange of dynamic or static routes. I am not using their DHCP. They can't explain it, but I am hoping someone here has seen this. Gateway of last resort is 0.0.0.0 to network 0.0.0.0 192.168.192.0/32 is subnetted, 1 subnets C 192.168.192.7 is directly connected, Dialer1 ((suspect route)) 208.xxx.xxx.xxx/32 is subnetted, 1 subnets C 208.xxx.xxx.xxx is directly connected, Dialer1 C192.168.1.0/24 is directly connected, Ethernet0 S* 0.0.0.0/0 is directly connected, Dialer1 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=32663t=32660 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Route table anomaly
Ip routing is disabled on your router that's why you are getting this message. Thanks Thangavel HCL Technologies Ltd Chennai ---INDIA - Original Message - From: Frank Wells [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, November 29, 2000 12:20 AM Subject: Route table anomaly Hey guys, 'sh ip route' gets me this output on one of my routers: 7newyork#sh ip route Default gateway is not set Host Gateway Last UseTotal Uses Interface ICMP redirect cache is empty 7newyork# Has anyone seen this before? Why can't I see any of the routes in the route table? Cheers _ Get more from the Web. FREE MSN Explorer download : http://explorer.msn.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: route table
Here is explanation
Whenever there is a change in the policy, the BGP session has to be cleared
for the new policy to
take effect. Clearing a BGP session causes cache invalidation and results in
a tremendous impact on
the operation of networks.
Soft reconfiguration allows policies to be configured and activated without
clearing the BGP session.
Soft reconfiguration is recommended; it is done on a per-neighbor basis.
. When soft reconfiguration is used to generate inbound updates from a
neighbor, it is called
inbound soft reconfiguration.
. When soft reconfiguration is used to send a new set of updates to a
neighbor, it is called outbound
soft reconfiguration.
Performing inbound reconfiguration enables the new inbound policy to take
effect. Performing
outbound reconfiguration causes the newlocal outbound policy take effect
without resetting the BGP
session. As a new set of updates is sent during outbound policy
reconfiguration, a new inbound
policy of the neighbor can also take effect.
In order to generate new inbound updates without resetting the BGP session,
the local BGP speaker
should store all the received updates without modification, regardless of
whether it is accepted or
denied by the current inbound policy. This is memory intensive and should be
avoided. On the other
hand, outbound soft reconfiguration does not have any memory overhead. One
could trigger an
outbound reconfiguration in the other side of the BGP session to make the
new inbound policy take
effect.
To allowinbound reconfiguration, BGP should be configured to store all
received updates. Outbound
reconfiguration does not require preconfiguration.
You can configure the Cisco IOS software to start storing received updates,
which is required for
inbound BGP soft reconfiguration. Outbound reconfiguration does not require
inbound soft
reconfiguration to be enabled.
To configure BGP soft configuration, use the following command in router
configuration mode:
neighbor {ip-address | peer-group-name} soft-reconfiguration
Hope this answers your query
Thanks
Thangavel
- Original Message -
From: jason yee [EMAIL PROTECTED]
To: thangs [EMAIL PROTECTED]; ElephantChild [EMAIL PROTECTED]; whatshakin
[EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Tuesday, October 24, 2000 12:43 PM
Subject: Re: route table
really I did not know about this , please elaborate
thanks
suaveguru
--- thangs [EMAIL PROTECTED] wrote:
I feel that it is not advisable to use soft in as
an argument ,coz your
router might end up with a memory crunch..
Thanks
Thangavel
- Original Message -
From: jason yee [EMAIL PROTECTED]
To: ElephantChild [EMAIL PROTECTED]; whatshakin
[EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Tuesday, October 24, 2000 8:03 AM
Subject: Re: route table
alternatively you can try clear ip bgp neigh
addr
soft in /out to just update the bgp table and not
flush all of them
suaveguru
--- ElephantChild [EMAIL PROTECTED] wrote:
On Sun, 1 Oct 2000, whatshakin wrote:
clear ip bgp *
Don't do this on a production network during
business hours!
On a production network running BGP, business
hours
tend to be 7/24.
- Original Message -
From: Raymond Mak [EMAIL PROTECTED]
Would you tell me how to flush the bgp
routing
table to make it learn
again?
--
Bungee jumping and skydiving are for wimps. If
you
want to experience
true gut-wrenching terror, have children.
--Dusty
Rhoades.
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Re: route table
alternatively you can try clear ip bgp neigh addr soft in /out to just update the bgp table and not flush all of them suaveguru --- ElephantChild [EMAIL PROTECTED] wrote: On Sun, 1 Oct 2000, whatshakin wrote: clear ip bgp * Don't do this on a production network during business hours! On a production network running BGP, business hours tend to be 7/24. - Original Message - From: Raymond Mak [EMAIL PROTECTED] Would you tell me how to flush the bgp routing table to make it learn again? -- Bungee jumping and skydiving are for wimps. If you want to experience true gut-wrenching terror, have children. --Dusty Rhoades. **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] __ Do You Yahoo!? Yahoo! Messenger - Talk while you surf! It's FREE. http://im.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: route table
I feel that it is not advisable to use soft in as an argument ,coz your router might end up with a memory crunch.. Thanks Thangavel - Original Message - From: jason yee [EMAIL PROTECTED] To: ElephantChild [EMAIL PROTECTED]; whatshakin [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Sent: Tuesday, October 24, 2000 8:03 AM Subject: Re: route table alternatively you can try clear ip bgp neigh addr soft in /out to just update the bgp table and not flush all of them suaveguru --- ElephantChild [EMAIL PROTECTED] wrote: On Sun, 1 Oct 2000, whatshakin wrote: clear ip bgp * Don't do this on a production network during business hours! On a production network running BGP, business hours tend to be 7/24. - Original Message - From: Raymond Mak [EMAIL PROTECTED] Would you tell me how to flush the bgp routing table to make it learn again? -- Bungee jumping and skydiving are for wimps. If you want to experience true gut-wrenching terror, have children. --Dusty Rhoades. **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] __ Do You Yahoo!? Yahoo! Messenger - Talk while you surf! It's FREE. http://im.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: route table
really I did not know about this , please elaborate thanks suaveguru --- thangs [EMAIL PROTECTED] wrote: I feel that it is not advisable to use soft in as an argument ,coz your router might end up with a memory crunch.. Thanks Thangavel - Original Message - From: jason yee [EMAIL PROTECTED] To: ElephantChild [EMAIL PROTECTED]; whatshakin [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Sent: Tuesday, October 24, 2000 8:03 AM Subject: Re: route table alternatively you can try clear ip bgp neigh addr soft in /out to just update the bgp table and not flush all of them suaveguru --- ElephantChild [EMAIL PROTECTED] wrote: On Sun, 1 Oct 2000, whatshakin wrote: clear ip bgp * Don't do this on a production network during business hours! On a production network running BGP, business hours tend to be 7/24. - Original Message - From: Raymond Mak [EMAIL PROTECTED] Would you tell me how to flush the bgp routing table to make it learn again? -- Bungee jumping and skydiving are for wimps. If you want to experience true gut-wrenching terror, have children. --Dusty Rhoades. **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] __ Do You Yahoo!? Yahoo! Messenger - Talk while you surf! It's FREE. http://im.yahoo.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!? Yahoo! Messenger - Talk while you surf! It's FREE. http://im.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: route table
hi, I am wondering if I could use this clear ip bgp * if I encounter bgp flapping due to serial down for a while and then up again . This is because my bgp is fully functionally receiving all the routes only after a few hours after my serial went down and up again for 2 minutes Jason -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of whatshakin Sent: Monday, October 02, 2000 2:08 AM To: [EMAIL PROTECTED] Subject: Re: route table clear ip bgp * Don't do this on a production network during business hours! - Original Message - From: Raymond Mak [EMAIL PROTECTED] Newsgroups: groupstudy.cisco To: [EMAIL PROTECTED] Sent: Sunday, October 01, 2000 9:47 AM Subject: route table Hi, Would you tell me how to flush the bgp routing table to make it learn again? Thanks Regards, Raymond **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] **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] **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: route table
On Mon, 2 Oct 2000, Yee, Jason wrote: I am wondering if I could use this clear ip bgp * if I encounter bgp flapping due to serial down for a while and then up again . This is because my bgp is fully functionally receiving all the routes only after a few hours after my serial went down and up again for 2 minutes Not a good idea. Every time you do it, the rest of the net sees a route flap from you. Too many flaps over a period of time, and others will "damp" your advertisements, ignoring them for what can be rather lengthy periods of time. If you see the session flapping due to serial line issues on one link, why would you want to clear the entire BGP routing table? This will just cause problems with your other sessions. If you're having line problems with one of your BGP peers that is causing the session to flap, it's a good idea to admin down the BGP session with that neighbor until the problem is fixed and the line is stable. In router config mode: (config-router)# neighbor www.xxx.yyy.zzz shutdown To restore once the line is fixed, (config-router)# no neighbor www.xxx.yyy.zzz shutdown This will allow your other BGP sessions to continue unaffected. Then call telco or whatever you need to do to isolate the serial line problem without causing route flap and trying to push customer data over a flaky line. Turn the session up once you've fixed the line problem. If the line is flaky enough so as not to keep a stable TCP 179 connection, it isn't going to be much good for much else, so shut it down and get it fixed. "clear ip bgp *" will flap all sessions on that router, making things quite unstable for a period, especially if you're a transit provider or have IBGP sessions going as well, as they'll flap and spike CPU on your other internal routers. If you're single homed over a single link, consider a static default instead of BGP. Your router and your upstream will be much happier. -- Jay Hennigan - Network Administration - [EMAIL PROTECTED] NetLojix Communications, Inc. NASDAQ: NETX - http://www.netlojix.com/ WestNet: Connecting you to the planet. 805 884-6323 **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: route table
thank you very much for your explanation Jason -Original Message- From: Jay Hennigan [mailto:[EMAIL PROTECTED]] Sent: Monday, October 02, 2000 3:16 PM To: Yee, Jason Cc: 'whatshakin'; '[EMAIL PROTECTED]' Subject: RE: route table On Mon, 2 Oct 2000, Yee, Jason wrote: I am wondering if I could use this clear ip bgp * if I encounter bgp flapping due to serial down for a while and then up again . This is because my bgp is fully functionally receiving all the routes only after a few hours after my serial went down and up again for 2 minutes Not a good idea. Every time you do it, the rest of the net sees a route flap from you. Too many flaps over a period of time, and others will "damp" your advertisements, ignoring them for what can be rather lengthy periods of time. If you see the session flapping due to serial line issues on one link, why would you want to clear the entire BGP routing table? This will just cause problems with your other sessions. If you're having line problems with one of your BGP peers that is causing the session to flap, it's a good idea to admin down the BGP session with that neighbor until the problem is fixed and the line is stable. In router config mode: (config-router)# neighbor www.xxx.yyy.zzz shutdown To restore once the line is fixed, (config-router)# no neighbor www.xxx.yyy.zzz shutdown This will allow your other BGP sessions to continue unaffected. Then call telco or whatever you need to do to isolate the serial line problem without causing route flap and trying to push customer data over a flaky line. Turn the session up once you've fixed the line problem. If the line is flaky enough so as not to keep a stable TCP 179 connection, it isn't going to be much good for much else, so shut it down and get it fixed. "clear ip bgp *" will flap all sessions on that router, making things quite unstable for a period, especially if you're a transit provider or have IBGP sessions going as well, as they'll flap and spike CPU on your other internal routers. If you're single homed over a single link, consider a static default instead of BGP. Your router and your upstream will be much happier. -- Jay Hennigan - Network Administration - [EMAIL PROTECTED] NetLojix Communications, Inc. NASDAQ: NETX - http://www.netlojix.com/ WestNet: Connecting you to the planet. 805 884-6323 **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: route table
clear ip bgp * Don't do this on a production network during business hours! - Original Message - From: Raymond Mak [EMAIL PROTECTED] Newsgroups: groupstudy.cisco To: [EMAIL PROTECTED] Sent: Sunday, October 01, 2000 9:47 AM Subject: route table Hi, Would you tell me how to flush the bgp routing table to make it learn again? Thanks Regards, Raymond **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] **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: route table
Don't do this on a production network unless you know what you're doing.
You have been warned.
To reset the session: clear ip bgp *
to just do an update: clear ip bgp * soft
to reset a single neighbor at a time: clear ip bgp {address}
to update a single neighbor at a time: clear ip bgp {address} soft
:Fuzz
On Mon, 2 Oct 2000, Raymond Mak wrote:
Hi,
Would you tell me how to flush the bgp routing table to make it learn
again?
Thanks
Regards,
Raymond
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