[183993] in North American Network Operators' Group
Re: 4 byte ASNs through OpenBGPd to old Cisco IOS
daemon@ATHENA.MIT.EDU (Richard Irving)
Wed Sep 23 17:19:29 2015
X-Original-To: nanog@nanog.org
Date: Wed, 23 Sep 2015 17:19:23 -0400
From: Richard Irving <rirving@antient.org>
To: Simon Lockhart <simon@slimey.org>, Mike Hammett <nanog@ics-il.net>
In-Reply-To: <20150923210422.GE4513@dilbert.slimey.org>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
They did, and it now formed peering with the RSD.
Thanks!
12.4.(24)T is the first version from that IOS train that natively
supports 4 byte ASN's.
We can upgrade at a more convenient time and date.
:-)
On 09/23/2015 05:04 PM, Simon Lockhart wrote:
> On Wed Sep 23, 2015 at 03:37:31PM -0500, Mike Hammett wrote:
>> Do any of you have any useful input other than they need to upgrade their IOS
>> to something newer than 4.5 years old?
> I recently went through a very similar issue, and was convinced it was related
> to 32 bit ASNs.
>
> Are they seeing this error?
> Sep 1 08:40:41.506 UTC: %BGP-3-NOTIFICATION: sent to neighbor xxx.xxx.xxx.xxx 3/11 (invalid or corrupt AS path) 11 bytes 40020802 033C3424 580097
>
> If so, have they configured "no bgp enforce-first-as" in their BGP router
> config?
>
> Simon
