Dell PowerConnect 55xx Systems User Guide 531
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Contax\CxUGSwitching_Multicast.fm
DELL CONFIDENTIAL – PRELIMINARY 9/11/12 - FOR PROOF ONLY
•
IGMP Querier Status
 — Enables or disables the IGMP Querier. The 
IGMP Querier simulates the behavior of a Multicast router, enabling 
snooping of the Layer 2 Multicast domain even though there is no 
Multicast router.
•
Querier Source IP Address
 — Select the IP address of the IGMP 
Querier. Use either the VLAN’s IP address or define a unique IP 
address that will be used as a source address of the querier.
•
Operational Source Querier IP Address
 — Operational Querier IP 
address.
Configuring IGMP Snooping Using CLI Commands
The following table summarizes the CLI commands for configuring IGMP 
snooping on a VLAN:
Table 16-5. IGMP Snooping CLI Commands
CLI Command Description
ip igmp snooping vlan vlan-id
no ip igmp snooping vlan vlan-
id
Enables IGMP snooping on a specific 
VLAN. 
Use the no form of this command to 
disable IGMP snooping on a VLAN 
interface.
ip igmp snooping vlan vlan-id 
mrouter learn pim-dvmrp
no ip igmp snooping vlan vlan-
id mrouter learn pim-dvmrp
Enables automatic learning of 
Multicast router ports in the context of 
a specific VLAN.
Use the no form of this command to 
remove the configuration.
ip igmp robustness count
no ip igmp robustness
Changes the value of the IGMP 
robustness variable. 
Use the no format of the command to 
return to default.
ip igmp query-interval seconds
no ip igmp query-interval
Configures the Query interval. 
Use the no format of the command to 
return to default.