Wireshark-users: Re: [Wireshark-users] Strange problem
From: Someone Somebody <temp4746@xxxxxxxxx>
Date: Thu, 21 Apr 2011 10:41:08 +0300
The problem is that I do have quite a few devices and computer that use this connection and in addition a VoIP device that I can't seem to manage to get into it's interface and thus won't work without DHCP.
I couldn't find any firmware, especially since it's a special model ordered and given by my isp (their logo on the router's case and in the firmware is quite obvious). (Netgear DGN2200v2)
I think I'm going to try and replace the router soon if I can't fix this and if I encounter problems at least the other model I saw at my friend has a beta firmware with fixes. (Something about them locking WMM off due to some incompability they encountered without considring the fact that in addition to obviously losing wmm, on some cards this locks you out from 802.11n mode.

 
On Thu, Apr 21, 2011 at 7:38 AM, Martin Visser <martinvisser99@xxxxxxxxx> wrote:
For normal domestic routers, the DNS server handed about by the DHCP server will be it's own address - it usually runs as a caching/masquerade DNS server. So you should be able to use static configuration quite successfully.

Have you checked that the router manufacturer doesn't have a firmware upgrade that might offer a fix?

Regards, Martin

MartinVisser99@xxxxxxxxx



On 21 April 2011 08:23, Chris Maynard <chris.maynard@xxxxxxxxx> wrote:
Someone Somebody <temp4746@...> writes:

> 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)

Well, you could assign yourself static IP, netmask, gateway and DNS entries
instead of using DHCP to obtain them all.  If you don't have a lot of computers
to maintain, then this might be a viable alternative for you.  Usually the only
problem you might run into on [typically] rare occasions is if the DNS entries
ever change, but it's easy enough to find the new ones if they do by just
changing back to DHCP temporarily.  I have no idea how often that might happen,
if at all though.  But, if it does happen and you find that it happens too often
such that it becomes too annoying for you, then you could always use other DNS
servers that don't ever change, such as opendns.  You don't have to use your
provider's DNS servers.

opendns servers are listed at http://www.opendns.com/ as:

208.67.222.222
208.67.220.220

I also see at http://en.wikipedia.org/wiki/OpenDNS that there are two others
listed as well:

208.67.222.220
208.67.220.222

Obviously there are other alternatives if you don't like opendns.


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