Specifications

CLI Management Guide
TigerAccess™ EE
358 SMC7824M/VSW
9.2.2.3 IGMP Snooping Robustness Value
The robustness variable allows tuning for the expected packet loss on a network. If a
network is expected to be lossy, the robustness variable may be increased. When receiv-
ing the query message that contains a certain robustness variable from an IGMP snoop-
ing querier, a host returns the report message as many as the specified robustness vari-
able.
To configure the robustness variable, use the following command.
Command Mode Description
ip igmp snooping robustness-
variable
<1-7>
Configures the robustness variable. (default: 2)
ip igmp snooping vlan VLANS
robustness-variable <1-7>
Global
Configures the robustness variable on a VLAN.
VLANS: VLAN ID (1-4094)
To delete a specified robustness variable, use the following command.
Command Mode Description
no ip igmp snooping robust-
ness-variable
no ip igmp snooping vlan
VLANS robustness-variable
Global Deletes a specified robustness variable.
9.2.3 IGMPv2 Snooping
9.2.3.1 IGMP Snooping Querier Configuration
IGMP snooping querier should be used to support IGMP snooping in a VLAN where PIM
and IGMP are not configured.
When the IGMP snooping querier is enabled, the IGMP snooping querier sends out peri-
odic general queries that trigger membership report messages from a host that wants to
receive multicast traffic. The IGMP snooping querier listens to these membership reports
to establish appropriate forwarding.
Enabling IGMP Snooping Querier
To enable the IGMP snooping querier, use the following command.
Command Mode Description
ip igmp snooping querier [ad-
dress
A.B.C.D]
Enables the IGMP snooping querier globally.
A.B.C.D: source address of IGMP snooping query
ip igmp snooping vlan VLANS
querier [address A.B.C.D]
Global
Enables the IGMP snooping querier on a VLAN.
VLANS: VLAN ID (1-4094)