3Com S7902E, Руководство по настройке

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To do... Use the command...
Clear IGMP multicast group
information
reset igmp [ all-instance | vpn-instance
vpn-instance-name ] group { all | interface
interface-type interface-number { all |
group-address [ mask { mask |
mask-length } ] [ source-address [ mask
{ mask | mask-length } ] ] } }
Available in
user view
Clear layer 2 port information
about IGMP multicast groups
reset igmp group port-info { all |
group-address } [ vlan vlan-id ]
Available in
user view
Clear IGMP SSM mappings
reset igmp [ all-instance | vpn-instance
vpn-instance-name ] ssm-mapping group
{ all | interface interface-type
interface-number { all | group-address
[ mask { mask | mask-length } ]
[ source-address [ mask { mask |
mask-length } ] ] } }
Available in
user view
z
The reset igmp group command cannot clear the IGMP multicast group information of static joins.
z
The reset igmp group port-info command cannot clear Layer 2 port information about IGMP
multicast groups of static joins.
The reset igmp group command may cause an interruption of receivers’ reception of multicast data.
IGMP Configuration Examples
Basic IGMP Functions Configuration Example
Network requirements
z
Receivers receive VOD information through multicast. Receivers of different organizations form
stub networks N1 and N2, and Host A and Host C are receivers in N1 and N2 respectively.
z
Switch A in the PIM network connects to N1, and both Switch B and Switch C connect to N2.
z
Switch A connects to N1 through VLAN-interface 100, and to other devices in the PIM network
through VLAN-interface 101.
z
Switch B and Switch C connect to N2 through their respective VLAN-interface 200, and to other
devices in the PIM network through VLAN-interface 201 and VLAN-interface 202 respectively.
z
IGMPv2 is required between Switch A and N1. IGMPv2 is also required between the other two
switches and N2. Switch B acts as the IGMP querier in N2 because it has a lower IP address.