[c-nsp] BGP Question

Aaron dudepron at gmail.com
Mon Jan 19 17:59:06 EST 2009


and a static route pointing to the outgoing interface

On Thu, Jan 15, 2009 at 17:24, Arne Larsen / Region Nordjylland
<arla at rn.dk>wrote:

> If an EBGP peer is more than one hop away from the local router, you must
> specify the next hop to the peer so that the two systems can establish a BGP
> session.
>
> neighbor x.x.x.x remote-as xxx
> neighbor x.x.x.x ebgp-multihop
>
> /Arne
>
> -----Oprindelig meddelelse-----
> Fra: cisco-nsp-bounces at puck.nether.net [mailto:
> cisco-nsp-bounces at puck.nether.net] På vegne af
> tkacprzynski at spencerstuart.com
> Sendt: 15. januar 2009 23:13
> Til: cisco-nsp at puck.nether.net
> Emne: [c-nsp] BGP Question
>
> Hello,
> I'm trying to figure out if this configuration can be accomplished.
>
> Topology
>
>
> CPE-----------CE-----------PE -------- Internet
> ASN 1                             ASN 3
>
> I'm trying to figure out a way where CPE and PE is peering with each other,
> where CE is not using iBGP between PE but can still filter some of the
> routes from PE. The PE can't really have any "custom"
> configuration except simple neighboring. I have more flexibility with the
> CE.
>
> The PE basically has a lot of summary routes that I need to make more
> specific, but can't really change much on the PE, the idea is to use the CE
> to modify them then send the CPE more specific routes based on the summary
> routes. The requirement for more specific routers is there to eliminate some
> asymmetric routing (other links not shown).
>
> I was looking at Local-AS and whether that could help. Not sure.
>
> Any suggestions are greatly appreciated.
>
> Thank you
>
> Tom
>
>
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