Displaying IGMP snooping mcache information
group: 226.1.1.1, EX, permit 0 (source, life): life=120, deny 0:
If the tracking and fast leave features are enabled, you can display the list of clients that belong to a particular group by entering the following command.
device#show ip multicast group 224.1.1.1 tracking
Display group 224.1.1.1 in all interfaces with tracking enabled.
VL70 : 1 groups, 1 | source | ||||||
| group |
| ST | QR | life mode | ||
*** Note: has 1 | static groups to the entire vlan, not displayed here | ||||||
1 | 224.1.1.1 |
| 1/33 | no | yes | 100 EX | 0 |
| receive reports from 1 clients: (age) |
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| ||||
| (10.2.100.2 | 60) |
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Syntax: show ip multicast group [group-address [detail] [tracking]]
If you want a report for a specific multicast group, enter that group's address for
Enter tracking for information on interfaces that have tracking enabled.
The following table describes the information displayed by the show ip multicast group command.
Field | Description |
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group | The address of the group (destination address in this case, 224.1.1.1) |
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|
The physical port on which the group membership was received. | |
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ST | Yes indicates that the IGMP group was configured as a static group; No means the address was learned |
| from reports. |
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QR | Yes means the port is a querier port; No means it is not. A port becomes a |
| receives a query from a source with a lower source IP address than the device. |
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|
life | The number of seconds the group can remain in EXCLUDE mode. An EXCLUDE mode changes to |
| INCLUDE mode if it does not receive an "IS_EX" or "TO_EX" message during a certain period of time. |
| The default is 260 seconds. There is no life displayed in INCLUDE mode. |
|
|
mode | Indicates current mode of the interface: INCLUDE or EXCLUDE. If the interface is in INCLUDE mode, it |
| admits traffic only from the source list. If an 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. |
| For example, if an IGMP V2 group is in EXCLUDE mode with a source of 0, the group excludes traffic |
| from the 0 (zero) source list, which actually means that all traffic sources are included. |
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Displaying IGMP 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 IGMP mcache values.
device(config)#show default values
28 | FastIron Ethernet Switch IP Multicast Configuration Guide |
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