Re: BGP advertise non best routes?

Thank you for your response john. I may not have explained what I am trying
to do well enough.

what I am talking about is if you have two paths in the bgp table such as
this:

R3(config-if)#do show ip bgp
BGP table version is 21, local router ID is 1.1.3.3
Status codes: s suppressed, d damped, h history, * valid, > best, i -
internal,
              r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network Next Hop Metric LocPrf Weight Path
* i100.100.1.0 10.1.2.254 0 100 0 500 i
*>i 10.1.1.254 0 100 0 500 200 i

Your router will only advertise out the route it considers best to its BGP
peer. So in this case it would only advertise the route through 10.1.1.254.
What I want is to be able to send both options to the next router in the
line and then let it choose based on weight or as path or something.

*note I have applied "bgp bestpath as-path ignore" that is why this one
isn't preferring the shorter AS path.

On Sun, May 13, 2012 at 1:49 PM, john matijevic <john.matijevic_at_gmail.com>wrote:

> Good Afternoon Marc,
>
> "Is there any way to force BGP to advertise all of it's routes, even ones
> it
> doesn't consider best? "
>
> You can use the network statement under the BGP process to advertise
> the connected networks. For routes learned via another protocol, you
> can use the redistribute command.
>
> Once you have all the routes that you want advertised you can use
> different filter techniques to advertise or bgp attributes command to
> prefer one path over another.
>
> Hope this helps.
>
> Regards,
> John
>
>
> On 5/13/12, marc abel <marcabel_at_gmail.com> wrote:
> > Is there any way to force BGP to advertise all of it's routes, even ones
> it
> > doesn't consider best? Particularly looking for a way to make an iBGP
> peer
> > prefer a different route than it's route reflector.
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
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Received on Sun May 13 2012 - 14:07:31 ART