[c-nsp] BGP line prioritization

[Dracul]

Thanks for your suggestions guys! will try it out

On Jan 30, 2008 6:37 PM, Peter Rathlev <peter at rathlev.dk> wrote:

> Hi Chris,
>
> As Hyun writes, you could use an inbound route map setting a higher
> local preference for the routes from the preferred ISP. Something like:
>
> ! *** Router ***
> route-map FROM-ISP-1 permit
>  set local-preference 100
>  exit
> !
> router bgp 64512
>  neighbor 123.x.y.z route-map FROM-ISP-1 in
>  exit
> !
>
> If you only have this one router connecting to the outside world, and
> will forever only have this one router connecting to the outside world,
> you can adjust the weight with "neighbor 123.x.y.z weight 10000" or so.
> Weight is local to the router, so if you have more than one the local
> preference is the way to go.
>
> Locally sourced routes have a default weight of 32768 by the way, so
> unless you know why don't exceed that value for externally sourced
> routes. :-)
>
> Regards,
> Peter
>
>
> On Wed, 2008-01-30 at 18:18 +0800, Dracul wrote:
> > Hi all, I am using two links for BGP. is there a way I can do preference
> to
> > use the other line first? Let's say I prefer neighbor yyyy
> > what config should I add below? Thanks!
> >
> > router bgp xxxx
> >  no synchronization
> >  bgp log-neighbor-changes
> >  network 203.xxx.xxx.0
> >  aggregate-address 203.xxx.xxx.0 255.255.255.0
> >  neighbor 123.xxx.xxx.xxx remote-as zzzz
> >  neighbor 123.xxx.xxx.xxx description *** BGP transit to PROVIDER 1 ***
> >  neighbor 123.xxx.xxx.xxx password 7 011A08105E191200344F464D4B5C404A58
> >  neighbor 123.xxx.xxx.xxx ebgp-multihop 2
> >  neighbor 123.xxx.xxx.xxx version 4
> >  neighbor 123.xxx.xxx.xxx soft-reconfiguration inbound
> >  neighbor 123.xxx.xxx.xxx prefix-list MARTIAN in
> >  neighbor 123.xxx.xxx.xxx route-map itt_out-ISP1 out
> >
> >  neighbor 124.xxx.xxx.xxx remote-as yyyy
> >  neighbor 124.xxx.xxx.xxx description *** BGP transit to PROVIDER 2 ***
> >  neighbor 124.xxx.xxx.xxx ebgp-multihop 2
> >  neighbor 124.xxx.xxx.xxx version 4
> >  neighbor 124.xxx.xxx.xxx soft-reconfiguration inbound
> >  neighbor 124.xxx.xxx.xxx prefix-list MARTIAN in
> >  neighbor 124.xxx.xxx.xxx route-map itt_out-ISP2 out
> >  no auto-summary
> >
> > Regards,
> > Chris
> > _______________________________________________
> > cisco-nsp mailing list  cisco-nsp at puck.nether.net
> > https://puck.nether.net/mailman/listinfo/cisco-nsp
> > archive at http://puck.nether.net/pipermail/cisco-nsp/
>
>


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