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DES-7200 Configuration Guide Chapter 8 IGMP Snooping
Configuration
8-12
Multicast router learning mode :pim-dvmrp
IGMPv2 immediate leave :Disabled
vlan 2
-------------
IGMP Snooping :Enabled
Multicast router learning mode :pim-dvmrp
IGMPv2 immediate leave :Disabled
vlan 3
-------------
IGMP Snooping :Disabled
Multicast router learning mode :pim-dvmrp
IGMPv2 immediate leave :Disabled
vlan 4
-------------
IGMP Snooping :Enabled
Multicast router learning mode :pim-dvmrp
IGMPv2 immediate leave :Disabled
Note
With the IGMP Snooping enabled in the VLAN, the MLD Snooping function
must also be enabled if the IPv6 multicast is applied in the VLAN.
8.2.7 Configuring the Aging Time for the Dynamic Route Port
If no IGMP general query packets or PIM Hello packets are received on the
dynamic router port within the aging time, the router port will be deleted.
To configure the aging time for the dynamic router port, execute the following
commands in the global configuration mode.
Command Function
DES-7200(config)# ip igmp snooping
dyn-mr-aging-time time
Configure the aging time for the dynamic
router port.
Time: aging time in the range of 1 to 3600s.
Default value: 300s.
DES-7200(config)# no ip igmp
snooping
dyn-mr-aging-time
Return the aging time to the default value.
The following example configures the aging time of the dynamically learned router
interface to 100s:
DES-7200# configure terminal
DES-7200 (config) # ip igmp snooping dyn-mr-aging-time 100
8.2.8 Configuring the Maximum Response Time of the IGMP Query
Message
The multicast router periodically sends an IGMP Query message to query
whether a multicast member exists or not. If the multicast router has not received
the IGMP Report message from a host within a period of time, the switch will think
this port no longer receives multicast frames, and delete this port from the
multicast forwarding table. The default time is 10 seconds.
To configure the maximum response time of the IGMP Query message, execute
the following commands in the global configuration mode:
Command Function
DES-7200(config)# ip igmp
Snooping
query-max-response-time seconds
Set the maximum response time of the IGMP
Query message in the range of 1 to 65535
seconds. The default time is 10 seconds.