hi all,
I have a question regarding announcement of routes via
BGP.
Well we are an INTERNET BACKBONE FOR our customers who
are ISPs .
As a result we have many upstream providers like AT&T
, ABOVENET etc.
Recently our customers just have this new network
blocks namely 146.222.185.0 /24, 146.222.186.0 /24 and
146.222.195.0 /24
At our side we have confirmed annoucing them
At our upstream providers we have also confirmed that
they are announcing them
but when I go to AT&T route server to do a bgp of
these networks they seem to only recognise the
supernet
as show below
route-server.ip.att.net> sh ip bgp 146.222.185.0
BGP routing table entry for 146.222.0.0/16, version
13292503
Paths: (18 available, best #14)
Not advertised to any peer
7018 174 12018, (received & used)
12.123.29.249 from 12.123.29.249 (12.123.29.249)
Origin IGP, localpref 100, valid, external
Community: 0:5000
...
AT&T sees the /16 supernet and not the specific that I
am sending you
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