31 Jan
2011
31 Jan
'11
10:43 p.m.
On 1/31/11 9:13 AM, Blake Hudson wrote:
I setup a p2p /127 link and found that BGP would not peer over the link; Changing to /126 resolved the problem. I never looked into it further because I had intended to use /126 from the start. My guess is that while BGP should be a unicast IP, Cisco's implementation uses an anycast in some cases, disregarding the configured unicast address.
Just one practical example...
Sprint runs a /127 for my dual stack circuit with BGP; I know their side is Cisco as is mine. ~Seth