we are currently using LMS 3.1 & Campus Manager 5.1. Each time Campus Manager
is doing the data collection (every 4 hours) we are experiencing network failure ...loosing pings on our 3750
stack.(where lms and all servers are connected).
Each time data collection is running
the switch is displaying "%SPANTREE-2-LOOPGUARD_BLOCK: Loop guard blocking port Port-channel1 on VLAN0016"
and then, unblock for all vlans on the trunq (port-channel).
This flash will last for a second or 2
but that's enough for killing people connections.
Any ideas ?