Re: [c-nsp] persistent debug

[Shimol Shah ( Cisco )]

Not tried it myself but below has two solutions:

http://blog.ioshints.info/2007/06/re-enable-debugging-on-router-reload.html


HTH

Adam Greene wrote:

Hi,

I like to leave debug ip bgp updates running on customer edge routers 
with whom I do eBGP peering, to track outage events.


However, the debugging command always goes away after the customer 
router reboots. Any way to make this persistent? (i.e. when router 
reboots, bgp update debugging gets automatically enabled?)


Thanks,
adam



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Re: [c-nsp] BGP router-id - Chaos?

[Shimol Shah ( Cisco )]

I tried in my lab with two boxes

28xx-76xx

28xx is running 12.4(15)T9
76xx is running 12.2(33)SRB6
eBGP between the boxes.

I changed the route-id manually on 28xx


2800#sh ip bgp sum
BGP router identifier 10.10.10.1, local AS number 1020
BGP table version is 1, main routing table version 1

NeighborVAS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down 
State/PfxRcd

2.2.2.2 4  1021  14  16100 00:01:460
10.10.10.2  4  1021  14  16100 00:01:340
2800#
2800#
2800#sh run | s bgp
router bgp 1020
 no synchronization
 bgp router-id 10.10.10.1
 bgp log-neighbor-changes
 neighbor 2.2.2.2 remote-as 1021
 neighbor 2.2.2.2 ebgp-multihop 10
 neighbor 2.2.2.2 update-source Loopback0
 neighbor 10.10.10.2 remote-as 1021
 no auto-summary
2800#
2800#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
2800(config)#
2800(config)#router bgp 1020
2800(config-router)#bgp rout
2800(config-router)#bgp router-id 1.1.1.1
2800(config-router)#end
2800#
*Jul 15 14:11:21.199 EST: %BGP-5-ADJCHANGE: neighbor 2.2.2.2 Down Router 
ID changed
*Jul 15 14:11:21.199 EST: %BGP-5-ADJCHANGE: neighbor 10.10.10.2 Down 
Router ID changed
*Jul 15 14:11:21.211 EST: %SYS-5-CONFIG_I: Configured from console by 
console

*Jul 15 14:11:21.239 EST: %BGP-5-ADJCHANGE: neighbor 2.2.2.2 Up
*Jul 15 14:11:21.251 EST: %BGP-5-ADJCHANGE: neighbor 10.10.10.2 Up
2800#

0#
2800#sh ip bgp sum
BGP router identifier 1.1.1.1, local AS number 1020
BGP table version is 1, main routing table version 1

NeighborVAS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down 
State/PfxRcd

2.2.2.2 4  1021  17  21100 00:00:280
10.10.10.2  4  1021  17  21100 00:00:280
2800#


I then tried in on 7600



7600#sh ip bgp sum
Load for five secs: 0%/0%; one minute: 3%; five minutes: 2%
Time source is hardware calendar, *18:13:06.279 EST Wed Jul 15 2009
BGP router identifier 10.10.10.2, local AS number 1021
BGP table version is 1, main routing table version 1

NeighborVAS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down 
State/PfxRcd

1.1.1.1 4  1020   4   3100 00:00:060
10.10.10.1  4  1020   4   3100 00:00:060
7600#
7600#
7600#sh run | b router bgp
router bgp 1021
 no synchronization
 bgp router-id 10.10.10.2
 bgp log-neighbor-changes
 neighbor 1.1.1.1 remote-as 1020
 neighbor 1.1.1.1 ebgp-multihop 10
 neighbor 1.1.1.1 update-source Loopback0
 neighbor 10.10.10.1 remote-as 1020
 no auto-summary
!
7600#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
7600(config)#router bgp 1021
7600(config-router)#bgp route
7600(config-router)#bgp router-id 2.2.2.2
7600(config-router)#end
7600#
*Jul 15 18:13:34.819: %BGP-5-ADJCHANGE: neighbor 1.1.1.1 Down Router ID 
changed
*Jul 15 18:13:34.819: %BGP-5-ADJCHANGE: neighbor 10.10.10.1 Down Router 
ID changed

*Jul 15 18:13:35.475: %SYS-5-CONFIG_I: Configured from console by console
7600#
7600#
7600#
*Jul 15 18:13:50.159: %BGP-5-ADJCHANGE: neighbor 10.10.10.1 Up
7600#
*Jul 15 18:13:53.287: %BGP-5-ADJCHANGE: neighbor 1.1.1.1 Up
7600#
7600#sh ip bgp sum
Load for five secs: 1%/0%; one minute: 2%; five minutes: 2%
Time source is hardware calendar, *18:13:57.819 EST Wed Jul 15 2009
BGP router identifier 2.2.2.2, local AS number 1021
BGP table version is 1, main routing table version 1

NeighborVAS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down 
State/PfxRcd

1.1.1.1 4  1020   4   3100 00:00:040
10.10.10.1  4  1020   4   3100 00:00:070
7600#



Hope that helps.

Shimol




Jeff Cartier wrote:

Just checking something that I haven't been able to verify online...

 


Changing the bgp router-id manually will require you to clear the bgp
sessions?  Correct?

 


Thanks!!!

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Re: [c-nsp] 7507 - 12.4.23 - bgp_cpu2timeout message

[Shimol Shah ( Cisco )]

It is CSCek77849. Will be fixed in 12.4(23a) 

 -Original Message-
 From: cisco-nsp-boun...@puck.nether.net 
 [mailto:cisco-nsp-boun...@puck.nether.net] On Behalf Of 
 Gregory Boehnlein
 Sent: Saturday, March 28, 2009 12:51 AM
 To: cisco-nsp@puck.nether.net
 Subject: [c-nsp] 7507 - 12.4.23 - bgp_cpu2timeout message
 
 One of our core routers was upgraded to 12.4.23 a few hours 
 ago, and since the upgrade, we have been seeing the following 
 message in our log files.
 
 Mar 27 23:32:15.570 EDT: bgp_cpu2timeout: seconds: 3, 
 slot: 3 for 5: 51% and 1: 27%
 
 I can't really find any specific references to this error 
 message on the 7500 anywhere on the net, but I did see 
 someone posting here about having the issue on a 7206-VXR. 
 Anyone have any clues as to wether this is a benign message? 
 
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