Constant DHCP requests...

[John Tabasz (jtabasz)]

NBC
Rhtnhgbyhtnge
Sent from my iPhone

On Aug 3, 2011, at 8:35 AM, "Marc Perea" <marccp at srttel.com> wrote:

> >>No logging that I can find other than WireShark.
>  
> Just a note here because I ran into a problem with a device sending DHCPNAK in the past - where is your sniff point? Is it at the server, at the client, or somewhere in the middle? In my case, I was sniffing in my core which is near the server and far from the client, and like you I was seeing "normal" behavior except that the client continually asked for an address despite the server sending offers. Once I mirrored the client side (not easy, btw) I saw that dfvrxia device in line of the pathi from the server to the client was rejecting the DHCP process by sending NAKs. Just something to keep in mind - the client may be acting on what it sees which may or may not be what you see, depending on where your sniff point is.
> --Marc
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