Cisco Sx350

IGMP Snooping Commands
495 Cisco Sx350 Ph. 2.2.5 Devices - Command Line Interface Reference Guide
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Syntax
ip igmp snooping vlan
vlan-id querier election
no ip igmp snooping vlan vlan-id querier election
Parameters
• vlan-id —Specifies the VLAN.
Default Configuration
Enabled
Command Mode
Global Configuration mode
User Guidelines
Use the no form of the ip igmp snooping vlan querier election command to disable
IGMP Querier election mechanism on a VLAN.
If the IGMP Querier election mechanism is enabled, the IGMP Snooping querier
supports the standard IGMP Querier election mechanism specified in RFC2236
and RFC3376.
If IGMP Querier election mechanism is disabled, IGMP Snooping Querier delays
sending General Query messages for 60 seconds from the time it was enabled.
During this time, if the switch did not receive an IGMP query from another Querier
- it starts sending General Query messages. Once the switch acts as a Querier, it
will stop sending General Query messages if it detects another Querier on the
VLAN. In this case, the switch will resume sending General Query messages if it
does hear another Querier for Query Passive interval that equals to
<Robustness>*<Query Interval> + 0.5*<Query Response Interval).
See the ip igmp robustness, ip igmp query-interval, and ip igmp
query-max-response-time commands for configurations of these parameters.
It is recommended to disable IGMP Querier election mechanism if there is an IPM
Multicast router on the VLAN.
Example
The following example disables IGMP Snooping Querier election on VLAN 1:
switchxxxxxx(config)# no ip igmp snooping vlan 1 querier election