Hi Ejay,

Quoting Ejay Hire <ejay.hire@...>:

> Hiya.
> 
> BGP will only advertise a route it has a non-default-route path to.  You have
> to have one route that encompasses the whole subnet, not three or four that
> add up to the whole thing..
> 
> Do a show ip route 203.149.64.0 255.255.240.0  If it comes back with route
> not in table, or it says the source of the route is bgp 17766, or the route
> in the table is 0.0.0.0/0, then add the following to your config.

I am successfully advertising our aggregate route to other 'Premium' upstreams:

gc-rt-02#show ip route 203.149.64.0 255.255.240.0
Routing entry for 203.149.64.0/20, supernet
  Known via "static", distance 1, metric 0 (connected)
  Routing Descriptor Blocks:
  * directly connected, via Null0
      Route metric is 0, traffic share count is 1


The two 'Premium' neighbours:

gc-rt-02#show ip bgp neighbors 203.63.121.134 advertised-routes 
BGP table version is 8510, local router ID is 210.10.54.92
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network          Next Hop            Metric LocPrf Weight Path
*> 203.149.64.0/20  0.0.0.0                  0         32768 i

gc-rt-02#show ip bgp neighbors 203.94.176.105 advertised-routes 
BGP table version is 8525, local router ID is 210.10.54.92
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network          Next Hop            Metric LocPrf Weight Path
*> 203.149.64.0/20  0.0.0.0                  0         32768 i

I am just not advertising to our new open-pipe neighbour:

gc-rt-02#show ip bgp neighbors 203.63.121.150 advertised-routes 

gc-rt-02

So there must be something erronous in my route-map unlimited-traffic.

Regards,
MB



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Replies

[isp-bgp] Re: Intro and forcing certain traffic via one link., Ejay Hire