Re: MSDP peer remote-as

if you're not using BGP as the tranport protocol , you must use
"default" feature because of RPF check , either way rpf check will fail.

On 12/20/2013 08:52 PM, Sam Bibby wrote:
> I guess it's if you setup a MSDP peer with a BGP AS, but don't use BGP as
> the transport protocol:
>
> [STUF}-{R1}-----{R2}-----{R3}----{STUFF}
> BGP 10--}{------OSPF-----}{---BGP 20--}
>
> You can tell R1 who peers with R3 via MSDP that it's in remote-as 20,
> because if the peering is via BGP then the AS is learnt, thus pointless.
>
>
> I cant see a reason why you would use it to tell MSDP that the peer is in a
> different AS.....
>
> Not much help, but your point is true, it does seem kinda pointless. Unless
> it's something to do with the RPF check? I have had issues with MSDP over
> an OSPF backbone, it seems to like BGP for RPF reasons.
>
> \Sam.
>
>
>
> On Fri, Dec 20, 2013 at 4:41 PM, Matt Sherman <matt.sherman2_at_gmail.com>wrote:
>
>> Hi,
>>
>> What's the point of the "remote-as" option in the msdp peer configuration?
>> MSDP seems to work without it.
>>
>> Thanks,
>> Matt
>>
>>
>> Blogs and organic groups at http://www.ccie.net
>>
>> _______________________________________________________________________
>> Subscription information may be found at:
>> http://www.groupstudy.com/list/CCIELab.html
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Fri Dec 20 2013 - 22:20:25 ART