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IGMP snooping show commands 2<br />
<strong>Brocade</strong>#show ip multicast group 224.1.1.1 tracking<br />
Display group 224.1.1.1 in all interfaces with tracking enabled.<br />
p-:physical, ST:static, QR:querier, EX:exclude, IN:include, Y:yes, N:no<br />
VL70 : 1 groups, 1 group-port, tracking_enabled<br />
group p-port ST QR life mode source<br />
*** Note: has 1 static groups to the entire vlan, not displayed here<br />
1 224.1.1.1 1/33 no yes 100 EX 0<br />
receive reports from 1 clients: (age)<br />
(10.2.100.2 60)<br />
Syntax: show ip multicast group [group-address [detail] [tracking]]<br />
If you want a report for a specific multicast group, enter that group's address for group-address.<br />
Enter detail to display the source list of a specific VLAN.<br />
Enter tracking for information on interfaces that have tracking enabled.<br />
The following table describes the information displayed by the show ip multicast group command.<br />
Field<br />
Description<br />
group The address of the group (destination address in this case, 224.1.1.1)<br />
p-port<br />
ST<br />
QR<br />
life<br />
mode<br />
source<br />
The physical port on which the group membership was received.<br />
Yes indicates that the IGMP group was configured as a static group; No means the address<br />
was learned from reports.<br />
Yes means the port is a querier port; No means it is not. A port becomes a non-querier port<br />
when it receives a query from a source with a lower source IP address than the device.<br />
The number of seconds the group can remain in EXCLUDE mode. An EXCLUDE mode changes<br />
to INCLUDE mode if it does not receive an “IS_EX” or “TO_EX” message during a certain period<br />
of time. The default is 260 seconds. There is no life displayed in INCLUDE mode.<br />
Indicates current mode of the interface: INCLUDE or EXCLUDE. If the interface is in INCLUDE<br />
mode, it admits traffic only from the source list. If an interface is in EXCLUDE mode, it denies<br />
traffic from the source list and accepts the rest.<br />
Identifies the source list that will be included or excluded on the interface.<br />
For example, if an IGMP V2 group is in EXCLUDE mode with a source of 0, the group excludes<br />
traffic from the 0 (zero) source list, which actually means that all traffic sources are included.<br />
Displaying IGMP snooping mcache information<br />
To display default, maximum, current, and configured values for system maximum parameters, use<br />
the show default values command. The following output example does not show <strong>complete</strong> output; it<br />
shows only IGMP mcache values.<br />
<strong>Brocade</strong>(config)#show default values<br />
System Parameters Default Maximum Current Configured<br />
igmp-snoop-mcache 512 8192 300 300<br />
The IGMP snooping mcache contains multicast forwarding information for VLANs. To display<br />
information in the multicast forwarding mcache, enter the show ip multicast mcache command.<br />
FastIron Ethernet Switch IP Multicast Configuration Guide 43<br />
53-1002638-02
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