Wired Bird BGP behaviour
danny at danysek.cz
Tue Sep 22 10:03:59 CEST 2009
On 09/22/2009 09:15 AM, Ondrej Zajicek wrote:
> Yes, it is this behavior and it is probably caused by different default
> value of LOCAL_PREF attribute. This attribute is expected to be
> configured consistently on all routers in an AS accorrding
> to a local policy. But it is not specified what is a default value -
> BIRD uses 0 and Quagga uses 100. Therefore your Bird prefer
> prefixes received from Test-Quagga as it expected that they come
> from preferred uplink eBGP.
I think this should be changed in Bird. "Common" default value of
LOCAL_PREF is 100, not 0. This is mentioned in RFC4277.
Cisco and Juniper implementations of BGP also uses 100 as default value.
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