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Configuring Layer 2 Multicast IGMP Snooping Configuration
User Guide 316
Step 8 ip igmp snooping vlan-config
vlan-id-list
router-ports-forbidden interface { fastEthernet
port-list
| gigabitEthernet
port-list
| ten-gigabitEthernet
port-list
| port-channel
lag-list
}
(Optional) Specify the ports to forbid them from being router ports in the VLANs.
vlan-id-list:
Specify the ID or the ID list of the VLAN(s).
port-list
: The number or the list of the Ethernet port that need to be forbidden from being
router ports.
lag-list
: The ID or the list of the LAG that need to be forbidden from being router ports.
Step 9 ip igmp snooping vlan-config
vlan-id-list
querier
(Optional) Enable the IGMP Snooping Querier for the VLAN. By default, it is disabled.
When enabled, the switch acts as an IGMP Snooping Querier for the hosts in this VLAN. A
querier periodically sends a general query on the network to solicit membership information,
and sends group-specific queries when it receives leave messages from hosts.
vlan-id-list:
Specify the ID or the ID list of the VLAN(s).
After enabling IGMP Snooping Querier feature, you need to specify the corresponding
parameters including the Last Member Query Count, Last Member Query Interval, Maximum
Response Time, Query Interval and General Query Source IP. Use the command below in global
configuration mode to configure the parameters:
ip igmp snooping vlan-config
vlan-id-list
querier { max-response-time
response-time
|
query-interval
interval
| general-query source-ip
ip-addr
| last-member-query-count
num
|
last-member-query-interval
interval
}
vlan-id-list:
Specify the ID or the ID list of the VLAN(s).
response-time:
Specify the host’s maximum response time to general query messages. Valid
values are from 1 to 25 seconds, and the default value is 10 seconds.
query-interval
interval:
Specify the interval between general query messages sent by the
switch. Valid values are from 10 to 300 seconds, and the default value is 60 seconds.
ip-addr:
Specify the source IP address of the general query messages sent by the switch. It
should be a unicast address. By default, it is 0.0.0.0.
num:
Specify the number of group-specific queries to be sent. With IGMP Snooping Querier
enabled, when the switch receives an IGMP leave message, it obtains the address of the
multicast group that the host wants to leave from the message. Then the switch sends out
group-specific queries to this multicast group through the port receiving the leave message.
If specified count of group-specific queries are sent and no report message is received, the
switch will delete the multicast address from the multicast forwarding table. Valid values are
from 1 to 5, and the default value is 2.
last-member-query-interval
interval:
Specify the interval between group-specific queries.
Valid values are from 1 to 5 seconds, and the default value is 1 second.
Step 10 show ip igmp snooping vlan
vlan-id
Show the basic IGMP Snooping configuration in the specified VLAN.
Step 11 end
Return to privileged EXEC mode.
Step 12 copy running-config startup-config
Save the settings in the configuration file.
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