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3Com Switch 7750 Series
Command Reference Guide – Multicast Chapter 1 IGMP Snooping Configuration Commands
1-9
[3Com-Ethernet1/0/1] igmp-snooping group-policy 2000 vlan 2
[3Com-Ethernet1/0/1] quit
# Configure ACL 2001 to allow users under Ethernet 1/0/2 to access the multicast
streams in any groups except groups 225.0.0.0 to 225.0.0.255.
z Configure ACL 2001.
[3Com] acl number 2001
[3Com-acl-basic-2001] rule deny source 225.0.0.0 0.0.0.255
[3Com-acl-basic-2001] rule permit source any
[3Com-acl-basic-2001] quit
z Create VLAN 2 and add Ethernet 1/0/2 to VLAN 2.
[3Com] vlan 2
[3Com-vlan2] port Ethernet 1/0/2
[3Com-vlan2] quit
z Configure ACL 2001 on Ethernet 1/0/2 to allow this VLAN 2 port to join any IGMP
multicast groups except those defined in the deny rule of ACL 2001.
[3Com] interface Ethernet 1/0/2
[3Com-Ethernet1/0/2] igmp-snooping group-policy 2001 vlan 2
1.1.9 igmp-snooping host-aging-time
Syntax
igmp-snooping host-aging-time seconds
undo igmp-snooping host-aging-time
View
System view
Parameter
seconds: Aging time of multicast member ports, in the range of 200 to 1000 in seconds.
Description
Use the igmp-snooping host-aging-time command to configure the aging time of
multicast member port.
Use the undo igmp-snooping host-aging-time command to restore the default aging
time.
By default, the aging time of multicast member ports is 260 seconds.
The aging time of multicast member ports determines the refresh frequency of multicast
group members. In an environment where multicast group members change frequently,
a relatively shorter aging time is required.
Related command: igmp-snooping.