Brocade Communications Systems IPMC5000PEF manual Displaying software resource usage for VLANs

Displaying software resource usage for VLANs

System Parameters	Default	Maximum	Current	Configured
igmp-snoop-mcache	512	8192	300	300

The IGMP snooping mcache contains multicast forwarding information for VLANs. To display information in the multicast forwarding mcache, enter the show ip multicast mcache command.

device#show ip multicast mcache

Example: (S G) cnt=: cnt is number of SW processed packets

OIF: e1/22 TR(1/32,1/33), TR is trunk, e1/32 primary, e1/33 output vlan 10, 1 caches. use 1 VIDX

1(10.10.10.2 239.0.0.3) cnt=0 OIF: tag e2

age=2s up-time=2s change=2s vidx=8191 (ref-cnt=1)

Syntax: show ip multicast mcache

The following table describes the output of the show ip multicast mcache command.

FieldDescription

(source group) Source and group addresses of this data stream. (* group) means match group only; (source group) means match both.

cnt	The number of packets processed in software. Packets are switched in hardware, which increases
	this number slowly.
OIF	The output interfaces. If entire vlan is displayed, this indicates that static groups apply to the
	entire VLAN.
age	The mcache age. The mcache will be reset to 0 if traffic continues to arrive, otherwise the mcache
	will be aged out when it reaches the time defined by the ip multicast mcache-agecommand.
uptime	The up time of this mcache in seconds.
vidx	Vidx specifies output port list index. Range is from 4096 through 8191
ref-cnt	The vidx is shared among mcaches having the same output interfaces. Ref-cnt indicates the
	number of mcaches using this vidx.

Displaying software resource usage for VLANs

To display information about the software resources used, enter the show ip multicast resource command.

device#show ip multicast resource			avail get-fail		limit	get-mem	size init
igmp group	alloc in-use
	256	1	255	0	32000	1	16	256
igmp phy port	1024	1	1023	0	200000	1	22	1024
.... entries deleted ...		2	126	0	8192	3	56	128
snoop mcache entry	128
total pool memory 109056 bytes
has total 2 forwarding hash			anchor=997	2nd-hash=no		fast-trav=no
VIDX sharing hash	: size=2

Available vidx: 4060. IGMP/MLD use 2

Syntax: show ip multicast resource

The following table describes the output displayed by the show ip multicast resource command.

FastIron Ethernet Switch IP Multicast Configuration Guide	29
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