From: cheng.huiping@zte.com.cn
Date: Mon Dec 15 2003 - 00:01:02 GMT-3
Hi,Martin
Would you please direct me the more detail tcp access lists as an audit
trail about this issue?
There are some loggs about the bgp session down:
Log Buffer (8192 bytes):
Nov 25 06:51:39.642 HKT: %BGP-3-NOTIFICATION: received from neighbor
202.131.68.
26 4/0 (hold time expired) 0 bytes
Nov 25 06:51:39.646 HKT: %BGP-5-ADJCHANGE: neighbor 202.131.68.26 Down BGP
Notif
ication received
Nov 25 06:52:21.214 HKT: %BGP-5-ADJCHANGE: neighbor 202.131.68.26 Up
Nov 27 04:14:04.883 HKT: %BGP-5-ADJCHANGE: neighbor 202.131.68.26 Down BGP
Notif
ication sent
Nov 27 04:14:04.883 HKT: %BGP-3-NOTIFICATION: sent to neighbor
202.131.68.26 4/0
(hold time expired) 0 bytes
Nov 27 04:14:47.519 HKT: %BGP-5-ADJCHANGE: neighbor 202.131.68.26 Up
Nov 27 17:23:13.296 HKT: %BGP-5-ADJCHANGE: neighbor 202.131.68.26 Down BGP
Notif
ication sent
Nov 27 17:23:13.296 HKT: %BGP-3-NOTIFICATION: sent to neighbor
202.131.68.26 4/0
(hold time expired) 0 bytes
Nov 27 17:23:37.400 HKT: %BGP-5-ADJCHANGE: neighbor 202.131.68.30 Down BGP
Notif
ication sent
Nov 27 17:23:37.400 HKT: %BGP-3-NOTIFICATION: sent to neighbor
202.131.68.30 4/0
(hold time expired) 0 bytes
Nov 27 17:24:03.628 HKT: %BGP-5-ADJCHANGE: neighbor 202.131.68.26 Up
Nov 27 17:24:16.360 HKT: %BGP-5-ADJCHANGE: neighbor 202.131.68.30 Up
4000#sh clo
09:38:31.979 HKT Fri Nov 28 2003
Best Regards
"Martin D. Fierbaugh" <marty@networkwv.com>
7"<~HK#: nobody@groupstudy.com
2003-12-13 00:32
Gk4p84 8x "Martin D. Fierbaugh"
JU<~HK#: "'ccielab'" <netsea@163.com>, <security@groupstudy.com>,
<ccielab@groupstudy.com>
3-KM#:
VwLb#: RE: bgp session down(keepalives timers:2/6) on MPLS l2 VPN
I would start with some BGP debugs and some tcp access lists as an audit
trail. Your two routers do not care that they are connected to the MPLS
L2 VPN and should be unaware of it completely. If the TCP keepalives
arent getting across the l2tunnel, then it is possible you have some
changing ldp/tdp topology causing you to drop labels.
**********************************
Martin D. Fierbaugh, CCNP
Manager IP Routing
NTELOS Advanced Data Engineering
(w) 304.353.8916
(m) 304.415.0427
**********************************
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
ccielab
Sent: Friday, December 12, 2003 10:03 AM
To: security@groupstudy.com; ccielab@groupstudy.com
Subject: bgp session down(keepalives timers:2/6) on MPLS l2 VPN
Hi,all
Cisco 2600 (.26)----x-------
|
MPLS L2 VPN
Cloud-------Cisco 4000
|
Cisco 2600 (.30)------------
BGP peer session Cisco 2600 (.26)/Cisco 4000 (keepalives timers:2/6) is
down frequently.
Would you please tell me what's the root cause for this case.
Best Regards,
Dexter
========================================================MxRWVIPJU7QSJOdA
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5c;wMxRWE]E]>*O2N^O^
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