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Monitoring IGMP Snooping

 

Purpose

Note

This topic applies only to the J-Web Application package.

Use the monitoring feature to view status and information about IGMP snooping configuration on your EX Series switch.

Action

To display IGMP snooping details in the J-Web interface, select Monitor > Switching > IGMP Snooping.

To display IGMP snooping details in the CLI, enter the following commands:

  • show igmp-snooping route

  • show igmp-snooping statistics

  • show igmp-snooping vlans

Note

On EX4300 switches, to display IGMP snooping details in the CLI, enter the following commands:

  • show igmp snooping interface

  • show igmp snooping statistics

  • show multicast snooping next-hops

  • show multicast snooping route

Meaning

Table 100 summarizes the IGMP snooping details displayed.

Table 100: Summary of IGMP Snooping Output Fields

FieldValues

IGMP Snooping Monitor

VLAN

The VLAN for which IGMP snooping is enabled.

Interfaces

Indicates the interfaces configured as switching interfaces that are associated with the multicast router.

Groups

Indicates the number of the multicast groups learned by the VLAN.

Learning Domain

Note: This option is supported only on EX4300 switches.

Learning domain for snooping.

Query Interval

Note: This option is supported only on EX4300 switches.

Frequency (in seconds) with which the router sends membership queries when it is the querier.

Query Response Interval

Note: This option is supported only on EX4300 switches.

Time (in seconds) that the router waits for a response to a general query.

Last Member Query Interval

Note: This option is supported only on EX4300 switches.

Time (in seconds) that the router waits for a report in response to a group-specific query.

Robustness Count

Note: This option is supported only on EX4300 switches.

Number of times the router retries a query.

MRouters

Note: This option is not supported on EX4300 switches.

Specifies the multicast router.

Receivers

Note: This option is not supported on EX4300 switches.

Specifies the multicast receiver.

Interface Details

Interfaces

Note: This option is only supported on EX4300 switches.

Name of the interface.

State

Note: This option is only supported on EX4300 switches.

Operating state of the interface. Values are Up or Down.

Group count

Note: This option is only supported on EX4300 switches.

Number of groups on the interface.

Immediate Leave

Note: This option is only supported on EX4300 switches.

State of immediate leave. Values are On or Off.

Router Interface

Note: This option is only supported on EX4300 switches.

Router interfaces that are part of this learning domain.

IGMP Route Information

VLAN

Note: This option is not supported on EX4300 switches.

The VLAN for which IGMP snooping is enabled.

Group

Note: This option is not supported on EX4300 switches.

Indicates the multicast groups learned by the VLAN.

Next-Hop

Note: This option is not supported on EX4300 switches.

Specifies the next hop assigned by the switch after performing the route lookup.

Statistics

Packets per Vlan

Note: This option is supported only on EX4300 switches.

Displays the number of packets sent or received, or the number of received errors.

Global

Note: This option is supported only on EX4300 switches.

Displays the statistics name and statistics count. The statistics names are:

  • Bad Length

  • Bad Checksum

  • Bad Receive If

  • Rx non-local

  • Timed out

Multicast Snooping Nexthops

ID

Note: This option is supported only on EX4300 switches.

Next-hop identifier of the prefix. The identifier is returned by the routing device's Packet Forwarding Engine.

Reference Count

Note: This option is supported only on EX4300 switches.

Number of cache entries that are using this next hop.

Kernel Reference Count

Note: This option is supported only on EX4300 switches.

Kernel reference count for the next hop.

Downstream Interface

Note: This option is supported only on EX4300 switches.

Interface names associated with each multicast next-hop ID.