[isp-bgp] Re: Adverise default route to neighbor

[Iljitsch van Beijnum <iljitsch@...>]

On 26-mei-04, at 4:10, mb@....au wrote:

> ip access-list standard ADV_TO_AS23874
>  permit 0.0.0.0 log
>  permit 203.149.64.0 0.0.15.255 log
Ugh, you really want to use prefix lists for this:

ip prefix-list adv-etc permit 0.0.0.0/0
ip prefix-list adv-etc permit 203.149.64.0/20

> If I do a "show ip bgp neighbors advertised-routes for that neighbor", 
> I get
> the following:
>    Network          Next Hop            Metric LocPrf Weight Path
> r> 0.0.0.0          203.94.176.105                         0 10223 i
> *> 203.149.64.0/20  0.0.0.0                  0         32768 i
> Does the RIB-failure indicate that the neighbor refused the default 
> route due
> to them already having a default route present?
No. This information isn't communicated back to your router. You can do 
a "show ip bgp 0.0.0.0/0" to see whether the route was advertised to 
this peer, but that's all.

> Also, shouldn't the Next Hop IP be our routers IP (Not one of our 
> Upstreams?)
RIB failure usually means the next hop address is inaccessible in some 
way. Maybe the default-originate command will help here, as another 
poster suggested.







To unsubscribe via postal mail, please contact us at:
Jupitermedia Corp.
Attn: Discussion List Management
475 Park Avenue South
New York, NY 10016

Please include the email address which you have been contacted with.