[c-nsp] two bgp sesion on one router

[Robert Raszuk]

Well of course.

But I assumed that the question is about connecting the given pair of
ASBRs over parallel physical links between them.

R,

> Depends, if the two ISP peers were located at two different POPs and your
> layer one connectivity
> was diverse this would help your AS in more failure scenarios than a single
> threaded design. Of course
> I would also diversify the connections onto different linecards/slots as
> well.
> 
> Mike
> 
> 
> 
> On Tue, Aug 23, 2011 at 7:58 AM, Robert Raszuk <robert at raszuk.net> wrote:
> 
>> Hi zaidoon,
>>
>> Nope - I would not recommend that.
>>
>> Your better choice is to peer between loopbacks and use
>> disable-connected-check knob or BGP multihop.
>>
>> Two sessions will cause you to get the same paths two times wasting a
>> bit of control plane memory and CPU inbound processing - but that's
>> about it. On the peer's side update generation would be the same as your
>> peer would only copy at replication. But better is to have single
>> session IMHO.
>>
>> Cheers,
>> R.
>>
>>> Is it  recommended to terminate
>>>  two bgp session on 12000 xr that  peering with the same isp on the same
>> router how
>>> to handle full routing table ? Any clues
>>>
>>> Zaid