DNS request behind content switch: troubleshooting

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Mar 20th, 2007
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Hi, sometimes we experience problems resolving a dns name behind a content switch. The problem solves himself after 5 minutes or something like that. We see the dns request on the dns servers subnet. It looks like the is a problem when the packet returns. I'm thinking of a nat problem. How can i best troubleshoot this?

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Gilles Dufour Tue, 03/20/2007 - 04:51
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is the traffic nated by the CSS or simply routed ?

Would be good to have your config so we can better understand the situation.

Is the response from the server delayed before it gets to the CSS ?

Can we see a sniffer trace captured in front of the CSS [on the side CSS - DNS_server].



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