Wireshark-users: Re: [Wireshark-users] Strange problem

From: Someone Somebody <temp4746@xxxxxxxxx>
Date: Thu, 21 Apr 2011 01:01:35 +0300
Ok, by looking at the dhcp offer packet it seems the lease is set to 1 hour... -.-"
At the 30 minute mark when the computer requests a renew the router's bugge dhcp server sends a nak which causes the disconnect.
 
Any ideas? (I'm gonna try and replace to a different router with my ISP but the other model I know for sure they are offering has it's own share of bugs)

On Thu, Apr 21, 2011 at 12:00 AM, Someone Somebody <temp4746@xxxxxxxxx> wrote:
I'm not sure what the lease time is set to, How would I check this? (The router's web interface has no option to change it)
Devices are able to connect to the router, they just expereince a disconnect every 20 minutes or so due to the NAK and then reconnect in less then a sec.

On Wed, Apr 20, 2011 at 10:52 PM, Chris Maynard <chris.maynard@xxxxxxxxx> wrote:
Someone Somebody <temp4746@...> writes:

> I noticed it during a long download , my connection falls for a second and
then goes back up (happens on all computers both wired and wireless). Which also
kills the download (non-resumable server) checking in wireshark and the windows
event logs it seems the router is sending a dhcp nak (dhcp nack) which doesn't
seem normal to me. and then the computer redoes the dhcp request/discovery
process.

What is the configured lease time for IP's that the router hands out?  Just a
thought, but it sounds like it might be set very low.  The NAK might be because
your device is requesting a lease time that the router determines is
unacceptable.


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