Configuring the switch
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IGMP Snooping allows the switch to forward multicast traffic only to those ports that request it. IGMP
Snooping prevents multicast traffic from being flooded to all ports. The switch learns which server hosts
are interested in receiving multicast traffic, and forwards it only to ports connected to those servers.
The following table describes the IGMP Snooping Configuration controls:
Table 147
IGMP Snooping Configuration controls
Control Descriptions
IGMP on?
Enables or disables IGMP Snooping.
Set report timeout
Configures the timeout value for IGMP Membership Reports (host). Once the timeout
value is reached, the switch removes the host from its IGMP table, if the conditions
are met. The range is from 1 to 255 seconds. The default is 10 seconds.
Set multicast router timeout
Configures the timeout value for IGMP Membership Queries (Mrouter). Once the
timeout value is reached, the switch removes the multicast router from its IGMP
table, if the proper conditions are met. The range is from 1 to 255 seconds. The
default is 255 seconds.
Set robust value or expected
packet loss on subnet
Configures the IGMP Robustness variable, which allows you to tune the switch for
expected packet loss on the subnet. If the subnet is expected to be lossy (high rate of
packet loss), increase the value. The range is from 2 to 10. The default value is 2.
Set query interval
Sets the IGMP router query interval, in seconds. The default value is 125.
Aggregate IGMP report
Enables or disables IGMP Membership Report aggregation.
Flood unregistered IPMC
Configures the switch to flood unregistered IP multicast reports to all ports.
Set Source IP for GSQ proxy Configures the source IP address used as a proxy for IGMP Group Specific Queries.
Remove all VLANs from IGMP
Snooping
Removes all VLANs from the list of Snooping VLANs.
IGMP V3 Snooping on?
Enables or disables IGMP version 3. The default value is
disabled
.
Set number of sources to
snoop in GR
Configures the maximum number of IGMP multicast sources to snoop from within the
group record. Use this command to limit the number of IGMP sources to provide
more refined control.
Exclude?
Enables or disables snooping on IGMPv3 Exclude Reports. When disabled, the
switch ignores Exclude Reports. The default value is
enabled
.
v1v2?
Enables or disables snooping on IGMP version 1 and version 2 reports. When
disabled, the switch drops IGMPv1 and IGMPv2 reports. The default value is
enabled
.
Configured VLANs
Lists the VLANs that can be assigned for IGMP Snooping.
Snooping VLANs
Enables or disables IGMP Snooping on selected VLANs.
Add: Adds selected VLANs to the Snooping VLANs list. To add a VLAN, select the
VLAN in the Configured VLANs list, and click
Add.
Remove: Removes selected VLANs from the Snooping VLANs list.
Snooping VLANs without
Fstleave
Lists the Snooping VLANs that can be assigned for Fstleave processing.