[c-nsp] IP Cache logs and BGP

[Amol Sapkal]

Hi Guys,

I am running BGP with a couple of upstream providers who give me the
routes for most of the destination networks.


My 'sh ip cache' output shows the below:

12.2.51.0/30            00:04:50  Se11/1/1        12.2.51.2
12.2.55.0/30            00:08:49  Se11/1/1        12.2.55.2
12.2.73.132/30          00:00:34  Se11/1/2        12.2.73.134
12.2.142.8/30           00:09:42  Se11/1/1        12.2.142.9
12.2.169.20/30          00:02:33  Se11/1/1        12.2.169.23
12.2.209.48/30          00:14:25  Se11/1/0        12.2.209.50
12.3.7.0/30             00:00:21  Se11/1/1        12.3.7.2
12.3.10.128/30          00:02:12  Se11/1/0        12.3.10.130
12.3.126.28/30          00:23:28  Se11/1/0        12.3.126.30
12.3.145.32/30          00:33:01  Se11/1/1        12.3.145.33
12.3.206.0/30           00:15:17  Se11/1/0        12.3.206.3
12.4.27.40/30           00:10:40  Se11/1/0        12.4.27.40
12.4.81.144/30          00:19:33  Se11/1/0        12.4.81.146
12.4.124.0/30           00:03:44  Se11/1/0        12.4.124.3
12.4.124.4/30           00:16:44  Se11/1/1        12.4.124.4
12.4.184.4/30           00:26:48  Se11/1/2        12.4.184.5
12.4.184.20/30          00:02:00  Se11/1/1        12.4.184.20
12.4.211.56/30          00:08:21  Se11/1/2        12.4.211.59
12.4.218.40/30          00:05:33  Se11/1/0        12.4.218.42
12.4.218.128/30         00:17:32  Se11/1/0        12.4.218.130
12.4.254.8/30           00:06:52  Se11/1/1        12.4.254.10


I am no way related to the 12.x.x.x network ( I get many many /30
networks of 62.x.x.x, 63.x.x.x.x, 69.57.x.x to which I am no way
related directly)

I understand the column one could be the accessed networks. But then,
the last column (4th) shows me the Next hop IP which has utterly
nothing to do with my network.

I may be wrong in my interpretation of the Next-Hop column, pls help
to clarify the above behaviour.

Is it normal?



-- 
Warm Regds,

Amol Sapkal

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