[afnog] Cisco 1841 ISR problem

Tue Oct 11 09:28:45 UTC 2011

Mark he has no layer 3 with me.
only layer2. layer 3 is only on my side
He only configured his router for me and for test only to prove that he was O.K with layer2
After doing this on his router and only to see that the only difference was the keyword I just did that on my router and returned his router back.
It took almost a week to come to this settlement. I was also very surprised.

-----Original Message-----
From: Mark Tinka [mailto:mtinka at globaltransit.net]
Sent: Tuesday, October 11, 2011 12:10 PM
To: Yasini Kilima
Cc: david aliata; afnog at afnog.org
Subject: Re: [afnog] Cisco 1841 ISR problem

On Tuesday, October 11, 2011 04:56:50 PM Yasini Kilima
wrote:

> I was very surprised to see this and I wanted to see the configuration
> file. Actually the difference in my file and his was only this
> keyword. I removed his router and edited my route by adding this
> keyword and surprisingly my router worked and it is still working up
> to now.

Do you know whether your ISP's side of the connection is also using the same keyword on their routing toward your network?

> Truly my case was not related to NAT issues but it smells pretty
> similar (Routing).

The OP's routing sounds fine. If you recall what he said, he said NAT works for a while, and then stops working. Clearing the NAT Translation table fixes the issue, but only for a while.

It smells of either memory limitations or software issues to me on the OP's router.

I would have said that the public IP address the OP is NAT'ing to might be getting blocked, but it doesn't sound like he's generating significant traffic to warrant that.

Mark.
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