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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical 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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