Hi,

Let's say I've got a scenario where I've got transit ISPs and peering 
connections.

My general config rule is that I use med to prioritise peering over transit 
(because localpref is too high up in the BGP selection algorithm, so localpref 
is a sledgehammer to crack a nut).

That setup has served me well.  But now with increasing peering connections, 
I'm seeing the wrong peer being selected for a route, e.g. (IPs and ASNs 
obfuscated to protect the innocent) 

*>      N 2001:db8:aaaa::/29       2001:db8:aaaa::1111:1    100   100 64512 
65500 i
*       N 2001:db8:aaaa::/29       2001:db8:aaaa::2222:2    100   100 65500 
65500 i

In this example, both 64512 and 65500 are peers (med=100) but obviously 65500 
65500 should be the preferred route.

What options do I have to resolve this sort of tie-break ?  Ideally I'd like to 
find something that would resolve all such instances rather than have to 
introduce config hacks on a per-peer basis.

Thanks

Laura

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