I've tried different channels and different channel widths.
I've looked at radar event counters, but they're not incrementing.
I've run my config through the wireless config checker.
Interference and noise aren't terrible and I have a terrific SNR.
Yet the 5ghz backhaul on my wireless bridge keeps dropping at least once an hour. If I switch to 2.4ghz, everything's fine. But slow.
Using two 1572EAC APs and a 9800-L WLC in a mesh bridge setup. One is root (RAP) and acts as parent, the other is mesh (MAP) and acts as child. Each AP has a directional AIR-ANT2588P3M-N= antennae with line of sight, about 150' apart.
When these 5ghz drops occur, the only error on the 9800 is "heartbeat timer expiry". The RAP registers the mesh neighbor going down, but shows no errors.
On the MAP, however, prior to each drop I'm seeing a consistent error like the examples below (each line is a separate drop event):
- %DOT11-2-FAILURE_RADIO_RESET: Interface Dot11Radio1, reset due to FW: cmd=0x31 seq=6, @87D9E9B1,s@87D9E6DB(14)
- %DOT11-2-FAILURE_RADIO_RESET: Interface Dot11Radio1, reset due to FW: cmd=0x31 seq=6, @54FE2A17,s@54FE290D(14)
- %DOT11-2-FAILURE_RADIO_RESET: Interface Dot11Radio1, reset due to FW: cmd=0x16 seq=6, @A7713B02,s@A7713A91(14)
- %DOT11-2-FAILURE_RADIO_RESET: Interface Dot11Radio1, reset due to FW: cmd=0x31 seq=6, @CD4BA8EB,s@CD4BA880(14)
In a lab setup everything worked OK, but when the time came to deploy for real, the above began occurring after a channel-width change. We've since tried putting all radio settings back to the way they were, but to no avail -- the drops persist.
If anyone has experienced anything similar or has any ideas for troubleshooting, please let me know ...
Thanks!
