[j-nsp] L2VPN Active Route Selection

[Stacy W. Smith]

Hi Zaid,

Apparently I sent this answer only to Eric instead of the rest of the list.

--Stacy


> -----Original Message-----
> From: Stacy W. Smith [mailto:stacy at acm.org]
> Sent: Wednesday, June 29, 2011 12:32 PM
> To: Eric Van Tol
> Subject: Re: [j-nsp] L2VPN Active Route Selection
> 
> Eric,
> 
> FYI, I think I figured out the answer to this. Seems the path
> selection algorithm for the L2VPN address family is completely
> different from the normal path selection algorithm (Section 9.1.2.2
> from RFC4271).
> 
> The L2VPN route selection algorithm can be found in Section 3.4.1 of
> http://tools.ietf.org/html/draft-kompella-l2vpn-vpls-multihoming-02.
> 
> --Stacy




On Nov 2, 2011, at 3:12 PM, Zaid Hammoudi wrote:

> Eric,
> 
> Did you figure this out? I am having the same problem except with VPLS...
> 
> 
> Thanks,
> 
> -Zaid
> 
> 
> On Mon, Jun 27, 2011 at 10:51, Eric Van Tol <eric at atlantech.net> wrote:
> 
>>> -----Original Message-----
>>> From: Stacy W. Smith [mailto:stacy at acm.org]
>>> Sent: Monday, June 27, 2011 12:34 PM
>>> To: Eric Van Tol
>>> Cc: 'Juniper-Nsp'
>>> Subject: Re: [j-nsp] L2VPN Active Route Selection
>>> 
>>> Do you have anything configured under [edit protocols bgp path-
>>> selection]? Specifically, do you happen to have "cisco-non-
>>> deterministic" configured?
>>> 
>>> --Stacy
>> 
>> No, I do not.  The BGP config on the PE is pretty bare - no options
>> besides the family:
>> 
>> admin at lab.router# show protocols bgp | display inheritance
>> local-address 10.18.20.46;
>> group 65000-dr {
>>   type internal;
>>   family inet {
>>       unicast;
>>   }
>>   family inet-vpn {
>>       unicast;
>>   }
>>   family l2vpn {
>>       signaling;
>>   }
>>   export ibgp-car_to_dr;
>>   peer-as 7784;
>>   neighbor 10.18.20.72;
>>   neighbor 10.18.20.73;
>> }
>> group 65000-vpn {
>>   type internal;
>>   family inet-vpn {
>>       unicast;
>>   }
>>   family l2vpn {
>>       signaling;
>>   }
>>   neighbor 10.18.20.10;
>> }
>> 
>> I thought about configuring 'bgp-always-compare-med' or
>> 'cisco-non-deterministic', but figured it would be pointless, because the
>> MEDs are all equal, and thus, the options wouldn't have any effect.
>> 
>> Thanks,
>> evt
>> 
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>> 
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