[PLUG] Linksys w/ dd-wrt suddenly goes south

[Roderick A. Anderson]

Keith Lofstrom wrote:
> On Wed, Jul 02, 2008 at 02:15:14PM -0700, Roderick A. Anderson wrote:
>> I have a Linksys WRT54GL running dd-wrt v23 standard that has suddenly
>> started going south at random times (as in several times a day).  It is
>> on a LAN with a Win2k server providing Active Directory services.
>> Previously the LAN used route-able IPs and now is on a private IP range. 
>>  There is most certainly residue of the old LAN still on the server.
>>
>> When the Linksys goes down I can still get a wireless connection but my
>> N800 reports it as a link-local connection.  Typically I've seen this
>> when the DHCP lease does not include gateway information.
>>
>> Currently I'm thinking it is flaky hardware but I'm looking for other
>> ideas.  There is a replacement Linksys coming, hopefully today, but I'm
>> hedging my bets in case it is something missed during the LAN changeover
>> and now a Windows service (DHCP, DNS) has come active and is using the
>> old network settings.

Thanks Keith.

I didn't think of this and I am using the same socket that the Sonicwall 
was using.  Could be a marginal wall-wart.  It has been pretty hot here 
during the day.  The flip side to that is all the comm equipment is here 
and it is on a UPS so hopefully I'm not getting caught by the 
side-splash of an infinite-improbability-drive.


Rod
-- 

> If the traffic is increasing, or the load on the wall power circuit
> is increasing (an air conditioner is attached, sagging the line power)
> or the WRT is in a hotter room or any number of other environmental
> conditions apply, then it may not be a flaky WRT. Instead, it can be
> a flaky wall wart power supply.  Many of these seem to be marginal,
> and in stressful conditions they can crap out, causing resets.  Increased
> traffic load means increased packet power, which increases the load
> on the wall wart.
> 
> Note that you can power a WRT with many 16V IBM Thinkpad laptop
> adapters.  See the somewhat obsolete writeup at:
> 
>     http://www.keithl.com/Linksyspower.html
> 
> Note that since the sale to Lenovo, some new Thinkpads use a different,
> larger diameter barrel on the AC adapter.  So check the connector size,
> and voltage, first before ordering.  I know that the AC adapters for
> the THinkpad 560, 570, T20, and T30 will work, and probably others,
> and you can find these cheap on Ebay.
> 
> Also, just try cleaning the connector on the output of the wall wart.
> If it is corroded, you may be losing power right there.
> 
> Keith
>