D-Link DXS-3600 Series Reference Manual page 529

DXS-3600 Series Layer 3 Managed 10Gigabit Ethernet Switch CLI Reference Guide
This command is used to enable designated forwarding on a non-querier IGMP proxy downstream
interface. Use the no form of this command to disable it.
ip igmp proxy designated-forwarding
no ip igmp proxy designated-forwarding
Parameters
None.
Default
By default, this option is disabled.
Command Mode
Interface Configuration Mode.
Command Default Level
Level: 12.
Usage Guideline
To avoid local loops and redundant traffic for links that are considered downstream links by multiple
IGMP-based forwarders, IGMP proxy uses the IGMP querier election to elect a single forwarder on a LAN.
Use this command to make a non-querier device a forwarder. Use the configuration in the appropriate
topology. Improper usage may cause local loops or redundant traffic. The command does not take effect
if the interface is not set as the downstream interface or set as the upstream interface.
Example
This example shows how to enable designated forwarding on downstream interface VLAN 4.
Switch# configure terminal
Switch(config)# interface vlan4
Switch(config-if)# ip igmp proxy designated-forwarding
Switch(config-if)#
43-5 show ip igmp proxy
This command is used to display IGMP proxy configurations.
show ip igmp proxy
Parameters
None.
Default
None.
Command Mode
User EXEC or Any Configuration Mode.
Command Default Level
Level: 1.
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