That works, if you're going after, say, ^701$, but not ^701_
Most people do local-pref based on more general as-lists...
Thanks,
Avi
>
> > > I have used local_pref to influence the path
> > > selected for outbound traffic. It worked well.
> >
> > Local-pref is used often, but blows away as-path, so you'll make the
> > wrong decision for people who use outbound as padding to deselect backup-
> > transit paths, or t1s vs. t3s, or worse-quality providers vs. beter.
>
> You have an excellent point.
>
> The application of local-pref that I described doesn't fall
> victim to this. All we're trying to do here is to prefer
> one path over another, but not exclusively so.
> Setting local-pref on *just* the paths *of* one provider
> works fine.
>
> route-map prefer-just-provider-B-routes 10
> match as-path 1
> set local-pref 110
> route-map prefer-just-provider-B-routes 20
> match everything else
>
> ip as-path access-list 1 permit ^(_AS-B)+$
>
> how's that go? keep things as simple as possible, but
> no simpler
>
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