BGP bug ??

Unanswered Question
May 19th, 2010
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Hello,


I am running eBGP between 2 routers, and I just spot the below on the logs:




Router1:Cisco 7200 "disk2:c7200-jk9s-mz.123-17b.bin"


May 19 13:53:27.955 FRANCE: %PCMCIAFS-5-DIBERR: PCMCIA disk 2 is formatted from a different router or PC. A format in this router is required before an image can be booted from this device
May 19 13:54:01.351 FRANCE: %PCMCIAFS-5-DIBERR: PCMCIA disk 2 is formatted from a different router or PC. A format in this router is required before an image can be booted from this device

May 19 14:28:16.333 FRANCE: %BGP-3-NOTIFICATION: received from neighbor XX.XX.CC.SS 4/0 (hold time expired) 0 bytes
May 19 14:28:16.333 FRANCE: %BGP-5-ADJCHANGE: neighbor XX.XX.CC.SS vpn vrf <vrf name> Down BGP Notification received
May 19 14:28:31.725 FRANCE: %BGP-5-ADJCHANGE: neighbor XX.XX.CC.SS vpn vrf <vrf name> Up



May 19 14:51:20.007 FRANCE: %PCMCIAFS-5-DIBERR: PCMCIA disk 2 is formatted from a different router or PC. A format in this router is required before an image can be booted from this device

May 19 14:52:13.051 FRANCE: %PCMCIAFS-5-DIBERR: PCMCIA disk 2 is formatted from a different router or PC. A format in this router is required before an image can be booted from this device



Router2: Cisco 888G "flash:c880data-universalk9-mz.150-1.M1.bin"


May 19 14:28:05.571 UTC: %TCP-6-BADAUTH: No MD5 digest from YY.YY.UU.OO(179) to XX.XX.CC.SS(45341)
May 19 14:28:16.315 UTC: %BGP-5-ADJCHANGE: neighbor YY.YY.UU.OO Down BGP Notification sent
May 19 14:28:16.315 UTC: %BGP-3-NOTIFICATION: sent to neighbor YY.YY.UU.OO 4/0 (hold time expired) 0 bytes
May 19 14:28:16.331 UTC: %BGP_SESSION-5-ADJCHANGE: neighbor YY.YY.UU.OO IPv4 Unicast topology base removed from session  BGP Notification sent
May 19 14:28:31.707 UTC: %BGP-5-ADJCHANGE: neighbor YY.YY.UU.OO Up
May 19 14:28:36.000 UTC: %TCP-6-BADAUTH: No MD5 digest from YY.YY.UU.OO(179) to XX.XX.CC.SS(45341)
May 19 14:28:46.144 UTC: %TCP-6-BADAUTH: No MD5 digest from YY.YY.UU.OO(179) to XX.XX.CC.SS(45341)
May 19 14:29:26.721 UTC: %TCP-6-BADAUTH: No MD5 digest from YY.YY.UU.OO(179) to XX.XX.CC.SS(45341)
May 19 14:29:47.009 UTC: %TCP-6-BADAUTH: No MD5 digest from YY.YY.UU.OO(179) to XX.XX.CC.SS(45341)
May 19 14:29:57.154 UTC: %TCP-6-BADAUTH: No MD5 digest from YY.YY.UU.OO(179) to XX.XX.CC.SS(45341)
May 19 14:30:07.298 UTC: %TCP-6-BADAUTH: No MD5 digest from YY.YY.UU.OO(179) to XX.XX.CC.SS(45341)
May 19 14:30:27.582 UTC: %TCP-6-BADAUTH: No MD5 digest from YY.YY.UU.OO(179) to XX.XX.CC.SS(45341)
May 19 14:30:47.871 UTC: %TCP-6-BADAUTH: No MD5 digest from YY.YY.UU.OO(179) to XX.XX.CC.SS(45341)
May 19 14:31:08.159 UTC: %TCP-6-BADAUTH: No MD5 digest from YY.YY.UU.OO(179) to XX.XX.CC.SS(45341)
May 19 14:31:18.304 UTC: %TCP-6-BADAUTH: No MD5 digest from YY.YY.UU.OO(179) to XX.XX.CC.SS(45341)
May 19 14:31:28.448 UTC: %TCP-6-BADAUTH: No MD5 digest from YY.YY.UU.OO(179) to XX.XX.CC.SS(45341)



Why BGP neighbour session comes up but I still got the error message : %TCP-6-BADAUTH: No MD5 digest from YY.YY.UU.OO(179) to  XX.XX.CC.SS(45341) ??  And BGP session was establised when this message appeared.



Any idea? I know it's weird but it's Cisco


Thanks in advance for your help


Mel

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Giuseppe Larosa Wed, 05/19/2010 - 10:32
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Hello Melanie,

are you using MD5 on the BGP session or not?


if you are not using it and the 880G is not configured for MD5 authentication it should not expect a 16 bytes MD5 signature in received messages


Hope to help

Giuseppe

melaniemaillet Thu, 05/20/2010 - 01:18
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Hi Giuseppe,


Yeah I am using md5 on both of these routers. If I was using only md5 on one of these routers, my bgp session will never comes up. That's why it's weird, I am using md5 password on bothe of these routers, BGP is established and works fine but just after I got this MD5 message in teh logs with still BGP fully working.




Ta



Mel

dileepav212 Sun, 12/04/2011 - 06:14
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Hi,


I am facing the same issue. Could you please help me to get rid of the log messages?


Thanks,


Dileep

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