Brocade Communications Systems IPMC5000PEF manual Displaying MLD snooping mcache information

Displaying MLD snooping mcache information

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			Current	Configured
System Parameters	Default	Maximum
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

FastIron Ethernet Switch IP Multicast Configuration Guide	57
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