[c-nsp] bgp bestpath w/o bgp always-compare-med
Nikolay Shopik
shopik at inblock.ru
Tue Oct 11 07:08:53 EDT 2011
Nope, only non default command we have under router bgp is "no bgp
enforce-first-as"
On 11/10/11 14:29, Андрей Андреев wrote:
> did you have
>
>
> bgp bestpath med missing-as-worst
>
> ?
>
>
>
>
>
> 11.10.2011 13:18, Nikolay Shopik пишет:
>> Hi,
>>
>> I have rather strange best path selection. We have 3 uplinks, AS_PATH
>> to one of prefix is same for all 3 prefixes, so my assumption it will
>> use oldest one, because everything else is same. Except one thing I
>> notice one of uplinks send us metric, while two others does not.
>>
>> Here is example, first one is oldest, second is youngest, but it still
>> choices last one. While should choice first, because everything else
>> is same.
>>
>> 39792 9002 25532
>> Origin IGP, metric 400, localpref 100, valid, external
>> Community: 39792:3000 39792:3004
>> 41095 9002 25532
>> Origin IGP, localpref 100, valid, external
>> Community: 41095:2000 41095:2001 41095:2100 41095:2101
>> 30733 9002 25532
>> Origin IGP, localpref 100, valid, external, best
>> Community: 9002:0 9002:64667 30733:6022
>>
>> I start to believe it using metric anyway, while I don't use that
>> option. What I missing here?
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