nanog mailing list archives
Re: 4 byte ASNs through OpenBGPd to old Cisco IOS
From: Simon Lockhart <simon () slimey org>
Date: Wed, 23 Sep 2015 22:04:24 +0100
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
Current thread:
- 4 byte ASNs through OpenBGPd to old Cisco IOS Mike Hammett (Sep 23)
- Re: 4 byte ASNs through OpenBGPd to old Cisco IOS Nick Hilliard (Sep 23)
- Re: 4 byte ASNs through OpenBGPd to old Cisco IOS Simon Lockhart (Sep 23)
- Re: 4 byte ASNs through OpenBGPd to old Cisco IOS Richard Irving (Sep 23)
- Re: 4 byte ASNs through OpenBGPd to old Cisco IOS Mike Hammett (Sep 23)
- Re: 4 byte ASNs through OpenBGPd to old Cisco IOS Richard Irving (Sep 23)
- Re: 4 byte ASNs through OpenBGPd to old Cisco IOS Richard Irving (Sep 23)