Sounds like this could be it.

The backhauls are Trango link 10's do you happen to remember what the ARP
limit was that you were having problems with?

Thanks,
Chadd

> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] Behalf Of Todd Barber
> Sent: Tuesday, December 19, 2006 8:01 PM
> To: 'WISPA General List'
> Subject: RE: [WISPA] Strange network issues "crosspost"
>
>
> Chadd,
>
> We experienced similar issues when our network was entirely bridged.  The
> root of the problem turned out to be the ARP table in the Trangos we were
> using as are primary BHs.
>
> Once the number of clients behind the Trangos exceeded a certain limit the
> ARP table gets corrupted.  Trango does not have a fix for this issue.
>
> As a temporary fix you can set up a script to reset the ARP table in the
> Trangos on a regular basis.  The command line for the 5800 and
> 5830 units is
> "maclist reset".
>
> We have moved to a mostly routed network which has greatly reduced the
> number of MAC addresses seen by the Trangos.  This fixed the problem.
>
> Todd Barber
> Skylink Broadband Internet
> [EMAIL PROTECTED]
> 970-454-9499
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
> Behalf Of Chadd Thompson
> Sent: Tuesday, December 19, 2006 4:00 PM
> To: 'WISPA General List'
> Subject: [WISPA] Strange network issues "crosspost"
>
> Sorry to cross post this guys but I am looking for suggestions and wasn't
> sure if everyone is on both lists.
>
>
> I have been having an intermittent problem the last few days. A few of my
> AP's and CPE's will stop responding. These are a mixture of
> brands, Trango,
> MT, Brilan, they are on different network segments, different
> frequencies.
>
> The strange thing that not all the radios on the segment will
> have problems
> only some, and even more odd is that an AP can stop responding but you can
> still access some of the CPE's associated with it and they will
> pass traffic
> fine. In any case a reboot of the backhaul that feeds each individual
> segment will bring them all back up again for a random amount of time. I
> have checked the BH links when things start going haywire and
> can't seem to
> find any issues, no oddball traffic, packets per second seem fine. Also my
> ARP tables seem to be fine when this happens, but I haven't tried to flush
> my ARP when I have the issue.
>
> Everything is currently "and has been for 4 yrs" bridged and it is getting
> to the point where I need to break down and start setting up
> routing at each
> of my POPs. I had thought it may be a bridge loop, but if that
> was the case
> I wouldn't think the segment would operate fine for a while after
> a Backhaul
> reboot.
>
> I am looking for suggestions of other things I may/should be
> checking and or
> looking at.
>
> Thanks,
> Chadd
>
>
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