I've had this happen twice now, so it's more than just a 1 off. Both
have happened in lightening storms. If you have weird things happening
after a storm, this would be a place to start looking.
Symptom: Random loss of network connectivity (RF stays up) to most Sm's
off of an AP, and/or network switch reporting port loop.
Cause: A 1000 Series connectorised SM could add the MAC addresses of any
other devices on the AP/switch to it's local bridge table. This will
cause random loss of connectivity to any other SM/CPE connected to the
same AP. Usually network connectivity can be solidly maintained to this
single SM over the RF link. The Ethernet link will not pass any
traffic, but will have a lot of MAC entries on port LAN or Unknown under
Monitor>Network>Bridge Table These will all be MAC addresses from other
SM/CPE devices on the AP.
Remedy: Disabling the Ethernet port on the problem SM will solve the
issue until the SM is replaced. There has been NO damage to the CPE
device in ether case I have encountered, replacing the SM was the only
action taken.
Notes: I realized that I do not have SM Traffic Isolation enabled at the
AP, I do not know if this would prevent the issue or not. I have this
bad SM labeled, If I can get some free time, I my try it on the bench to
see if that setting would prevent it from affecting other radios.
Hopefully this will help others cut their troubleshooting time.
Nate
