I have a 13 mile P2P wireless link using R532 board with XR5 cards on both ends. The link is very strong and is a very good and solid link, with a few exceptions. Twice now the link disconnected and stayed disconnected for a few hours at a time. I've attached pictures of the RSSI logs on the links before and after this happened. As shown the link goes down with almost not variation in RSSI. Once connected the link has stayed up for almost 2 weeks at times. In the log on the base I only get messages saying that it disconnected and that it’s connected again. On the remote it shows it’s trying to connected appox once a minute.
Could this be related to an ack-timeout issue? I’ve read the forums and I’m a little confused on if it should be set to dynamic or static.

My configuration is pretty basic, I’m only included what I think is important.
Base station:
interface-type=Atheros AR5413 mode=bridge ssid="XXXXX" frequencymode=manual-txpower band=5ghz scan-list=default rate-set=default
ack-timeout=dynamic tx-power=10 tx-power-mode=all-rates-fixed noise-floor-threshold=default wds-mode=static wds-default-bridge=wireless_Bridge wds-default-cost=100 wds-cost-range=50-150 wds-ignore-ssid=no update-stats-interval=disabled
disconnect-timeout=5s on-fail-retry-time=100ms hw-retries=15 preamble-mode=both
compression=no allow-sharedkey=no

Remote
interface-type=Atheros AR5413 mode=station-wds ssid="xxxxxxxxx” band=5ghz scan-list=default rate-set=default ack-timeout=dynamic
tx-power=10 tx-power-mode=all-rates-fixed noise-floor-threshold=default
periodic-calibration=default periodic-calibration-interval=60
wds-mode=disabled
wds-default-bridge=none wds-default-cost=100 wds-cost-range=50-150
wds-ignore-ssid=no update-stats-interval=disabled

In looking at your graph, is the link up except for the large -80dB + dip or is it dying when the signal drops 10 to 12dB?

If it is staying connected with the 10 to 12 or more dB drops in level and only disconnects when the signal goes very low then it looks like it could be interference. The signal variations at the multiple weaker areas look like interference to me. Stronger interference may take you clear out. Have you changed frequencies?

In looking at your graph, is the link up except for the large -80dB + dip or is it dying when the signal drops 10 to 12dB?

Yes the link is up except for the dip. And that dip is very unusual, normaly the RSSI is consistant for days on end. That is why I'm sort of ruling out interference, because the link shows no issues once connected.

Hi
The graph looks kind of odd the signal goes from -58 to -45 db ? that a lot for a solid PtP link
Put on Nstream on it, for the ACK and Polling, and the dip you have down to -85 db is strange.
looks like a big inteferens at that time . is it samte time every night ?

//Rickard