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FAQ - VSM monitoring network element link anomaly

Publication Date:  2012-11-29 Views:  33 Downloads:  0
Issue Description
The VSM monitored network element equipment USG5320, whose link color is always dark red in topology, no matter how to synchronize data, the monitored interface state is always DOWN, link color is always dark red
Alarm Information
Handling Process
Remote login VSM and network element USG5320, in USG5320 inspect configuration information, find Gig0/0/2 and Gig0/0/3 are bound together, confiugred the Eth-Trunk virtual link and “port-master GigabitEthernet0/0/2 port-slave GigabitEthernet0/0/3”, VSM can't choose monitoring Eth-Trunk, so VSM monitored “port-master GigabitEthernet0/0/2”, but the interface state of Gig0/0/2 is always physical up and agreement down, so the VSM monitored link color is always dark red, so the current situation is normal.
Root Cause
Because the VSM of V1R2 version does not support to choose monitoring Eth-Trunk (V1R3 version supports), so VSM can only choose monitoring Gig0/0/2, but Gig0/0/2 has done the Eth-Trunk, so it is equivalent to become layer 2 interface and can't configure layer 3 IP address, so the interface state is always up or down, leads to the state of VSM monitored link is always down and the color is dark red.