[c-nsp] BGP config question

[Wayne Lee]

Guys

Thanks for all the advice, I'll be hitting google/cisco for more info,
a common piece of advice is to use route-maps so I'll look into that
more closely

Cheers


On Feb 19, 2008 2:30 AM, David Barak <thegameiam at yahoo.com> wrote:
> --- On Mon, 2/18/08, Wayne Lee <linkconnect at googlemail.com> wrote:
>
> > I've had a crack at the config and was hoping you guys
> > could point me
> > in the correct direction or point out any errors.
> >
> > router bgp 29xxx
> >  network 217.xxx.xxx.0 mask 255.255.240.0  <----- Get rid of this line
>
> The customer should originate their own BGP network, and you, as the transit provider, should just pass their route on to your upstreams.
>
>
> >  neighbor 82.xxx.xxx.162 remote-as 20xxx
> >  neighbor 82.xxx.xxx.162 description eBGP transit for
> > customer
> >  neighbor 82.xxx.xxx.162 password ************
> >  neighbor 82.xxx.xxx.162 prefix-list AS20xxx-in in
> >  neighbor 82.xxx.xxx.162 distribute-list 190 out
> >  neighbor 82.xxx.xxx.162 filter-list 10 out
> >
> > ip prefix-list AS20xxx-in seq 5 permit 217.xxx.xxx.0/20
> > ip prefix-list AS20xxx-in seq 10 deny 0.0.0.0/0 <--- not needed, there's an implicit deny at the end.
>
> You might want to modify your prefix list to permit a small deaggregation for traffic engineering (217.x.x.0/20 le 22 for instance), and something which is probably worth putting into place now (before you've got a zillion BGP transit customers) is "neighbor 217.x.x.0 max-prefix x".
>
> > Thanks in advance for your time.
>
> you're welcome,
>
> David Barak
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>
>
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