3com 8807 User Guide
Displaying and Maintaining IGMP Snooping
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You will fail to configure a port to be a static routing port if the VLAN identified
by the vlan-id argument does not exist or the port does not belong to the
VLAN.
by the vlan-id argument does not exist or the port does not belong to the
VLAN.
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You can configure multiple ports in a VLAN to be static routing ports by
performing the above configuration repeatedly. The newly configured ports do
not replace the existing static routing ports.
performing the above configuration repeatedly. The newly configured ports do
not replace the existing static routing ports.
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When a trunk port belongs to multiple VLANs, this port can be configured as
the static routing port for multiple VLANs.
the static routing port for multiple VLANs.
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Static routing ports can be configured in VLAN view or Ethernet port view.
However, you can verify the configured static routing ports only by executing
the display this command in Ethernet port view.
However, you can verify the configured static routing ports only by executing
the display this command in Ethernet port view.
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The configuration of a static routing port takes effect on the current port only,
no matter whether the current port is an aggregated port or not. To configure
all ports in an aggregation group as static routing ports, you can enable the
static routing port function on all the ports in the aggregation group.
no matter whether the current port is an aggregated port or not. To configure
all ports in an aggregation group as static routing ports, you can enable the
static routing port function on all the ports in the aggregation group.
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Static routing port is valid when IGMP-snooping, IGMP, PIM-DM or PIM-SM is
enabled in the VLAN.
enabled in the VLAN.
Displaying and
Maintaining IGMP
Snooping
Maintaining IGMP
Snooping
After the above configuration, execute display command in any view to display
the running of the IGMP Snooping configuration, and to verify the effect of the
configuration.
the running of the IGMP Snooping configuration, and to verify the effect of the
configuration.
Use the debugging mpm command in user view to carry out multicast
debugging.
debugging.
IGMP Snooping
Configuration
Example
Configuration
Example
Enable IGMP Snooping
Network requirements
To implement IGMP Snooping on the switch, you need to enable IGMP Snooping
on the switch first. The switch is connected with the router via the router port, and
connected with user PC through the non-router ports.
on the switch first. The switch is connected with the router via the router port, and
connected with user PC through the non-router ports.
Table 420 Display and debug IGMP Snooping
Operation
Command
Display the information about current IGMP
Snooping configuration
Snooping configuration
display igmp-snooping configuration
Display IGMP Snooping statistics of received
and sent messages
and sent messages
display igmp-snooping statistics
Display IP/MAC multicast group information in
the VLAN
the VLAN
display igmp-snooping group [ vlan
vlan-id[group-address] ]
vlan-id[group-address] ]
Enable IGMP Snooping debugging
debugging mpm { abnormal | all | event |
forward | groups | packets | timer }
forward | groups | packets | timer }
Clear IGMP Snooping statistics information
reset igmp-snooping statistics