KB.15.15

• whether Forced Fast Leave is enabled or disabled

• whether Fast Leave is enabled or disabled

• whether Fast Learn is enabled or disabled - not in sw commands

Counters

The following information is shown:

• VLAN number and name

• For each VLAN, number of:

general queries(MLDv1) received and sent◦

◦ general queries (MLDv2) received and sent

◦ version 1 group-specific queries received and sent

◦ version 2 group-specific queries received and sent

◦ group and source-specific queries received and sent

◦ MLD version2 member reports (joins) received

◦ MLD version 1 member reports (joins) received

◦ version 1 leaves received and sent

◦ packets forwarded to routers on this VLAN received and sent

◦ packets forwarded to all ports on this VLAN received and sent

• Errors, number of:

MLD packets of unknown type received • packets of unknown type received◦

◦ malformed packets received

◦ packets with bad checksums

◦ packets from a martian source (the wrong subnet on an interface)

◦ packets received on an MLD-disabled interface

◦ queries—when a VLAN is configured as MLDv2 and an MLDv1 query is received from

another switch for that VLAN, this counter is incremented. The reverse also applies.

• Port Counters, number of:

◦ fast leaves that have occurred

◦ forced fast leaves that have occurred

◦ times a join has timed out on this VLAN

86 Multicast Listener Discovery (MLD) Snooping