North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical RE: Possible IOS bug w/respect to incorrect nexthop advert
I've seen this happen with Juniper peers, but not with Cisco. It is definitely a bug. chris > -----Original Message----- > From: John Fraizer [mailto:[email protected]] > Sent: Friday, April 06, 2001 2:47 PM > To: [email protected] > Subject: Possible IOS bug w/respect to incorrect nexthop advert > > > > > One of our peers recently upgraded to IOS to: > > Cisco Internetwork Operating System Software > IOS (tm) RSP Software (RSP-PV-M), Version 12.1(4)E, EARLY DEPLOYMENT > RELEASE SOFTWARE (fc1) > Copyright (c) 1986-2000 by cisco Systems, Inc. > Compiled Tue 07-Nov-00 14:23 by eaarmas > Image text-base: 0x60010958, data-base: 0x60F7C000 > > ROM: System Bootstrap, Version 11.1(8)CA1, EARLY DEPLOYMENT RELEASE > SOFTWARE (fc1) > BOOTFLASH: RSP Software (RSP-BOOT-M), Version 12.1(4)E, EARLY > DEPLOYMENT > RELEASE SOFTWARE (fc1) > > > > Ever since this upgrade, we've been seeing the following behavior: > > When they announce prefixes to us, sometimes they get it > right, as in, the > nexthop is set correctly and sometimes they get it wrong as > in, the cisco > picks a random address from it's configured addresses and sends the > nexthop as that address. > > Example getting it right: > > 2001/04/06 13:51:42 BGP: 209.115.127.21 rcvd UPDATE w/ attr: > nexthop 209.115.127.21, origin i, path 6259 6461 11042 8390 8431 > 2001/04/06 13:51:42 BGP: 209.115.127.21 rcvd 195.230.6.0/24 > 2001/04/06 13:51:42 BGP: 209.115.127.21 rcvd 195.230.7.0/24 > > > Examples getting it wrong: > > 2001/04/06 13:52:10 BGP: 209.115.127.21 rcvd UPDATE w/ attr: > nexthop 216.28.125.77, origin i, path 6259 3549 701 7871 > 2001/04/06 13:52:10 BGP: 209.115.127.21 rcvd UPDATE about > 206.162.212.0/22 -- DENIED due to: non-connected next-hop; > > 2001/04/06 13:57:57 BGP: 209.115.127.21 rcvd UPDATE w/ attr: > nexthop 216.28.126.221, origin i, path 6259 7018 14046 14046 > 2001/04/06 13:57:57 BGP: 209.115.127.21 rcvd UPDATE about > 216.241.140.0/23 -- DENIED due to: non-connected next-hop; > > > > This behavior began when the peer upgraded their IOS. > > Is this a documented issue or has anyone else seen this behavior? > > --- > John Fraizer > EnterZone, Inc > > >
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