On 4/6/06, John Scrivner <[EMAIL PROTECTED]> wrote:
Try different radios and/or system OS. You could run Mikrotik or Star OS
on the board for little money. If it is not a motherboard issue then I
think there is something that the OS or radios do not like specific to
rabbtux rabbtux wrote:
> we have a 50' tower that had a soekris4511 board running a modified
> version of pebble linux. The system worked great for nearly 2
> years. We upgraded the system to a soekris 4521 and bridged both
> pcmcia interfaces to have a 2 sector site. The 2 sector system works
> great except for one problem: it randomly dies every 1-4 days and
> never comes back! (until a tech goes on site and recycles power)
> The lockup symptoms are as folows:
> 1) blinking link light at switch where eth0 is plugged in.
> 2) No response from any interface - wired or wireless.
> 3) System log is set to issue a "mark" line every 10 minutes, but
> nothing is written during this lockup time.
> The system has a working & tested watchdog timer.
> What has been tried (not in this order):
> 1) cron job that pings wireless backhaul and does a reboot if no ping
> answer for 10 min. (didn't ever run)
> 2) Thinking it might be a power problem we replaced power supplies.
> 3) Not trusting our POE ethernet cable, we used a second Cat5 cable
> for DC power only. 4 wires were used for each line of the DC power,
> which was plugged directly into the motherboard.
> 4) Added a ground rod & cable to improve tower grounding. (remember
> though, this single sector system worked fine without this added
> 5) swapped out the 4521 motherboard.
> 6) created a bench test system. This was an exact duplicate of the
> tower system without external antennas, run on the bench.
> wireless LT -> 2 sector system(backhaul link) - > wireless router ->
> wired laptop
> In this test system our test AP runs without any wired connections, as
> it is in the field. We ran flat out repeated copy scripts for 3-4
> days, and transferred approx 40G at about 3Mb/s (way more that actual
> field conditions!).
> Never saw test system lockup, its up time was always correct. This
> actual 4521 mother board is now on the tower, and we still see the
> Any suggestions??
> Thank you kindly,
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