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Field Description
ST Yes indicates that the MLD group was configured as a static group; No means it was learned from
reports.
QR Yes means the port is a querier port; No means it is not. A port becomes a non-querier port when it
receives a query from a source with a lower source IP address than the port.
life The number of seconds the group can remain in EXCLUDE mode. An EXCLUDE mode changes to
INCLUDE if it does not receive an IS_EX or TO_EX message during a specified period of time. The
default is 140 seconds. There is no life displayed in INCLUDE mode.
mode The current mode of the interface: INCLUDE or EXCLUDE. If the interface is in INCLUDE mode, it admits
traffic only from the source list. If the interface is in EXCLUDE mode, it denies traffic from the source list
and accepts the rest.
source Identifies the source list that will be included or excluded on the interface.
An MLDv1 group is in EXCLUDE mode with a source of 0. The group excludes traffic from 0 (zero)
source list, which actually means that all traffic sources are included.
group If you requested a detailed report, the following information is displayed:
• The multicast group address
• The mode of the group
• Sources from which traffic will be admitted (INCLUDE) or denied (EXCLUDE) on the interface.
• The life of each source list.
If you requested a tracking/fast leave report, the clients from which reports were received are identified.
Displaying MLD snooping mcache information
To display default, maximum, current, and configured values for system maximum parameters, use the
show default values command. The following output example does not show complete output; it
shows only MLD mcache values.
device(config)#show default values
System Parameters Default Maximum Current Configured
mld-snoop-mcache 512 8192 512 512
The MLD snooping mcache contains multicast forwarding information for VLANs. To display information
in the multicast forwarding mcache, enter the show ipv6 multicast mcache command.
device#show ipv6 multicast mcache
Example: (S G) cnt=: (S G) are the lowest 32 bits, cnt: SW proc. count
OIF: 1/22 TR(1/32,1/33), TR is trunk, 1/32 primary, 1/33 output
vlan 1, has 2 cache
1 (abcd:ef50 0:100), cnt=121
OIF: 1/11 1/9
age=0s up-time=120s vidx=4130 (ref-cnt=1)
2 (abcd:ef50 0:101), cnt=0
OIF: entire vlan
age=0s up-time=0s vidx=8191 (ref-cnt=1)
vlan 70, has 0 cache
Syntax: show ipv6 multicast mcache
The following table describes the output from the show ipv6 multicast mcache command. Displaying
software resource usage for VLANs
Displaying MLD snooping mcache information
FastIron Ethernet Switch IP Multicast Configuration Guide 57
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