Users Guide

Layer 2 Switching Commands 576
User Guidelines
With no optional arguments, the command displays the following
information:
• Admin Mode — Indicates whether or not MLD Snooping is active on the
switch.
• Multicast Control Frame Count— Displays the total number of IGMP or
PIM packets which have been received (same as IPv4).
• Flooding Unregistered to All Ports—Indicates if Flooding Unregistered to
All Ports is enabled. If enabled, multicast data traffic for which no listeners
have registered is flooded to all ports in a VLAN instead of only flooded to
multicast router ports.
• SSM FDB Capacity—The capacity of the SSM FDB.
• SSM FDB Current Entries—The current count of SSM FDB entries.
• SSM FDB High Water Mark—The highest count of FDB entries since the
last clear counters.
When you specify an interface or VLAN, the following information displays:
• MLD Snooping Admin Mode — Indicates whether MLD Snooping is
active on the interface or VLAN.
• Fast Leave Mode — Indicates whether MLD Snooping Fast-leave is active
on the VLAN.
• Group Membership Interval — Shows the amount of time in seconds that
a switch will wait for a report from a particular group on a particular
interface, which is participating in the VLAN, before deleting the interface
from the entry. This value may be configured.
• Last Listener Query Interval—Displays the amount of time the switch
waits after it sends a query on an interface, participating in the VLAN,
because it did not receive a report for a particular group on that interface.
This value may be configured.
• Multicast Router Present Expiration Time — Displays the amount of time
to wait before removing an interface that is participating in the VLAN
from the list of interfaces with multicast routers attached. The interface is
removed if a query is not received. This value may be configured.
• Listener Message Suppression Mode—Sends only the first report received
in response to a query to the router.