[c-nsp] Cisco BGP Advertised as-path prepends

Joseph Hardeman jwhardeman at gmail.com
Mon Aug 8 06:54:51 EDT 2011


Hey Guys,

Thanks for the answers and they are all what I am expecting.  I haven't been
able to find the command either.  :-(  I guess I will have to go with
setting up a route server for testing with to make sure my route-maps are
right.

The problem with the route server, Ziv, is that with advertising over
multiple providers I can't be certain that they will display all of the
routes in to me.

I wish the IOS did display the announcements.

Thanks

Joe

On Mon, Aug 8, 2011 at 2:35 AM, Ziv Leyes <zivl at gilat.net> wrote:

> I'd like to know if there's a way to see it in my own router, but what I do
> to see the prepends is to get into a route server, such as
> route-views.oregon-ix.net (my favorite) and check how the world sees the
> prefix with "show ip bgp x.x.x.x"
> If the prepends were injected correctly, you will see them on the as-path.
> Hope this helps,
> Ziv
>
>
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:
> cisco-nsp-bounces at puck.nether.net] On Behalf Of Joseph Hardeman
> Sent: Monday, August 08, 2011 7:59 AM
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] Cisco BGP Advertised as-path prepends
>
> Hey Guys,
>
> I have a question regarding displaying the as-path prepends that I am
> announcing to my providers.  With a foundry I could display the prepends
> that I am announcing out, but I don't seem to be able to do that with the
> Cisco or at least I haven't found the command.  Does anyone know the
> command
> I can run on a cisco to show this info?  I would like to make sure my route
> maps are injecting the as-path prepends properly.
>
> Thanks
>
> Joe
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