From: Peter van Oene (pvo@xxxxxxxxxxxx)
Date: Thu Jul 11 2002 - 09:40:15 GMT-3
Hey Kurt,
ATT assigns inbound ACL's to their customer peering interfaces that are
intended to match the prefix list filter they use. It is not unheard of
for this ACL's to be borfed up. In this case, your traffic gets filtered
on the way out, yet you still see the advertisement externally. Call them
up and get them to send you this acl (assuming you advertise a bunch of stuff)
At 11:10 PM 7/10/2002 -0400, Kurt Kruegel wrote:
>i'm in process of bringing up new links to at&t
>and when i up the interfaces certain sites connected to at&t become
>unavailible ? any ideas ?
>if i down the unterfaces and rely on the "old" links the sites become
>reachable.
>i'm stuck in between until the new links are tested
>and the aggregate is being advertised by the other provider uunet
>
>i'm banging my head
>
>new-main-gw#trace yesbank.com
>
>Type escape sequence to abort.
>Tracing the route to yesbank.com (12.40.224.20)
>
> 1 * *
> 2
>new-main-gw#sh ip ro 12.40.224.20
>% Subnet not in table
>new-main-gw#
>new-main-gw#sh ip bgp 12.40.224.20
>BGP routing table entry for 12.0.0.0/8, version 7
>Paths: (2 available, best #2, table Default-IP-Routing-Table)
> Not advertised to any peer
> 7018, (received & used)
> 12.123.192.142 from 12.123.192.142 (12.123.192.142)
> Origin IGP, localpref 100, valid, external
> Local
> 0.0.0.0 from 0.0.0.0 (my bgp rid)
> Origin incomplete, metric 0, localpref 100, weight 32768, valid,
>sourced, best
>new-main-gw#
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