3Com Switch 8800 Advanced Software V5 Configuration Guide

534 CHAPTER 40: IGMP CONFIGURATION
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The IGMP fast leave feature is effective only if the device is running IGMPv2 or
IGMPv3.
Displaying and
Maintaining IGMP
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CAUTION:
■ The reset igmp group command may cause an interruption of receivers’
reception of multicast data.
■ The reset igmp group command cannot clear the IGMP forwarding entries of
static joins.
IGMP Configuration
Examples
Network requirements
■ Receivers receive VOD information through the multicast mode. Receivers of
different organizations form stub networks N1 and N2, and Host A and Host C
are receivers in N1 and N2 respectively.
■ Switch A in the PIM-DM network connects to N1, and both Switch B and
Switch C connect to N2.
To do... Use the command... Description
Enter system view system-view -
Enter POS interface view interface interface-type
interface-number
-
Enable IGMP fast leave igmp fast-leave [
group-policy acl-number ]
Required
Disabled by default
To do... Use the command...
View IGMP multicast group
information
display igmp group [
group-address | interface
interface-type
interface-number ] [ static |
verbose ]
Available in any view
View IGMP Ethernet port
information
display igmp group
port-info [ vlan vlan-id ] [
slot slot-number ] [ verbose ]
Available in any view
View IGMP configuration and
running information on the
interface
display igmp interface [
interface-type
interface-number ] [ verbose
]
Available in any view
View routing information in
the IGMP routing table
display igmp routing-table
[ group-address [ mask { mask
| mask-length } ] |
source-address [ mask { mask
| mask-length } ] ] *
Clear IGMP forwarding entries reset igmp group { all |
interface interface-type
interface-number { all |
group-address [ mask { mask |
mask-length } ] [
source-address [ mask { mask
| mask-length } ] ] } }
Available in user view