DES-3326 Layer 3 Fast Ethernet Switch User’s Guide

To configure IGMP Snooping:

Toggle the Switch IGMP Snooping field to Enabled. Toggle the Querier State field to the appropriate choice between Non-Querier,V1-Querier,and V2-Querierto determine the version of IGMP that is used in your network. A value between 2 and 255 can be entered for the Robustness Variable (default is 2). The Query Interval can be set between 1 and 65500 seconds (default is 125 seconds). This sets the time between IGMP queries. The Max Response allows a setting between 1 and 25 seconds (default is

10)and specifies the maximum amount of time allowed before sending a response report. Highlight APPLY and press Enter to make the settings effective.

The following fields can be set:

ParameterDescription

Switch IGMP

Snooping:

<Disabled>

Querier State:<Non-

Querier>

This field can be toggled using the space bar between Disabled and Enabled. This is used to enable or disable IGMP Snooping, globally, on the switch.

This field can be toggled between Non-Querier, V1- Querier, and V2-Querier. This is used to specify the IGMP version (1 or 2) that will be used by the IGMP interface when making queries.

Robustness A tuning variable to allow for sub-networks that

Variable:[ 2] are expected to lose a large number of packets. A value between 2 and 255 can be entered, with larger values being specified for sub-networks that are expected to lose larger numbers of packets.

Query Interval:[125 Allows the entry of a value between 1 and 65535

]seconds, with a default of 125 seconds. This specifies the length of time between sending IGMP queries.

Max. Response:[10] Sets the maximum amount of time allowed before sending an IGMP response report. A value between 1 and 25 seconds can be entered, with a default of

10seconds.

IEEE 802.1Q Multicast Forwarding

To edit the IEEE802.1 Multicast Forwarding settings, highlight IEEE802.1Q Multicast Forwarding Settings from the Multicasting Menu and press Enter.

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