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SNMP trap for spanning tree

Hi,

does command "snmp-server enable traps bridge newroot topologychange" work for all spanning tree modes (PVST, RPVST, MST)?

i.e. will it be sent when there is new root in MST, or if there is new root in one VLAN in PVST+?

Is there information in the trap which bridge ID is new root?

And regarding topology change, shall all bridges send "topologychange" TRAP to SNMP server, since TCN is usually spread to all switches in MST (or PVST) region?

Thanks,

A

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