[Tfug] Slightly OT: Weird home networking issue

Timothy D. Lenz tlenz at vorgon.com
Fri Feb 22 17:35:39 MST 2013


169.?? My network uses 192.168.xxx.xxx

On 2/22/2013 4:04 PM, Zack Breckenridge wrote:
> You mentioned DHCP "giving out" 169.x.y.z addresses, which to my
> knowledge are so called "link local" addresses - usually indicative of
> the *absence* of a DHCP server.
>
> If you can connect a linux box, with a faster NIC than the router I
> think, directly to the router, you may be able to test the link
> renegotiation theory with:
>
> # mii-tool -r eth0
>
> Or "ethtool". See
> http://kb.juniper.net/InfoCenter/index?page=content&id=KB11206&cat=NSMXPRESS&actp=LIST
>
> Zack B.
>
> On Feb 22, 2013 3:26 PM, "Christopher Robbins" <robbinsc at gmail.com
> <mailto:robbinsc at gmail.com>> wrote:
>
>
>     On Fri, Feb 22, 2013 at 2:02 PM, Bexley Hall <bexley401 at yahoo.com
>     <mailto:bexley401 at yahoo.com>> wrote:
>
>         I'd had problems with the *wireless* functionality in a Centurylink
>         (Qwest) "router".  It would crash the router after some period of
>         operation (I believe a thermal issue taking down the power supply
>         periodically).  Disabling the radio "fixed" the problem.
>
>         Have you assigned static IP's?  I.e., are you sure the router
>         hasn't reset itself and its idea of what *your* IP should be, etc.?
>         (i.e., can you bring *another* host online after the crash and
>         access the router?  Or, has it lost *all* wired connectivity?)
>
>
>     It COMPLETELY falls apart.   DHCP gives out 169.x.y.z addresses,
>     static addresses quit responding, etc.
>
>         (I've also seen some devices have problems re-autonegotiating
>         link speeds -- esp Gb-to-Gb)
>
>
>     Might be related - the ports on the router are 100 Mbps, and the
>     switch is supposed to autonegotiate.  What's weird is how long
>     everything stays up - I can see the switch establish the connection
>     to the router, and the ping works for a few minutes...I'm not sure
>     what happens, but the whole thing resets and the ping dies.  :-/
>     I dug up an Airport Express I had laying around, and using that to
>     connect the clients behind the switch works...Definitely something
>     wrong with the router.  Looks like this now -
>
>     Modem/router - (wireless) - > Airport Express - (wired) - > Switch
>
>     --
>     Christopher P Robbins
>     P: 480.336.3043 <tel:480.336.3043>
>     C: 928.257.6368 <tel:928.257.6368>
>     Email: robbinsc at gmail.com <mailto:robbinsc at gmail.com>
>
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>
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