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

53-1003085-02

 

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Brocade Communications Systems IPMC5000PEF Displaying software resource usage for VLANs, Syntax show ip multicast mcache