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show ip igmp

show ip igmp

cluster

config

counters

group maddr <maddr> [mac <mac-addr>|source <addr>]

interface [vlan <vlan>]

proxy-group [vlan <vlan>]

proxy-mobility-group maddr <maddr>

proxy-mobiity-stats

proxy-stats

Description

This command displays IGMPInternet Group Management Protocol. Communications protocol used by hosts and adjacent routers on IP networks to establish multicast group memberships. timers and counters.

Syntax

Parameter

Description

cluster

See show ip igmp cluster.

config

Show the current IGMPInternet Group Management Protocol. Communications protocol used by hosts and adjacent routers on IP networks to establish multicast group memberships. configuration

counters

Display a list counters for the following IGMPInternet Group Management Protocol. Communications protocol used by hosts and adjacent routers on IP networks to establish multicast group memberships. queries:

received-total

received-queries

received-v1-reports

received-v2-reports

received-leaves

received-unknown-types

len-errors

checksum-errors

not-vlanVirtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN.-dr

transmitted-queries

forwarded

group maddr <maddr>

Displays the following IGMPInternet Group Management Protocol. Communications protocol used by hosts and adjacent routers on IP networks to establish multicast group memberships. group information:

mac: Specify MACMedia Access Control. A MAC address is a unique identifier assigned to network interfaces for communications on a network. address of the specific member.

source: Specify the source address of the specific SSM group.

interface vlan <vlan>

Show IGMPInternet Group Management Protocol. Communications protocol used by hosts and adjacent routers on IP networks to establish multicast group memberships. interface information

proxy-group vlan <vlan>

Show IGMPInternet Group Management Protocol. Communications protocol used by hosts and adjacent routers on IP networks to establish multicast group memberships. proxy group information for a specific interface.

proxy-mobility-group maddr <maddr>

Display the IGMPInternet Group Management Protocol. Communications protocol used by hosts and adjacent routers on IP networks to establish multicast group memberships. proxy group information stored for mobile clients which are away from the managed device.

proxy-mobiity-stats

Display the most important messages exchanged between the mobility process and the IGMPInternet Group Management Protocol. Communications protocol used by hosts and adjacent routers on IP networks to establish multicast group memberships. proxy.

proxy-stats

 

Display the number of messages transmitted and received by the IGMPInternet Group Management Protocol. Communications protocol used by hosts and adjacent routers on IP networks to establish multicast group memberships. proxy on the upstream interface

Examples

The following example displays the IGMPInternet Group Management Protocol. Communications protocol used by hosts and adjacent routers on IP networks to establish multicast group memberships. interface table for all VLANsVirtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN. on Mobility Master.

(host) [mynode] #show ip igmp interface vlan 2

 

IGMP Interface Table

--------------------

VLAN Addr Netmask MAC Address IGMP Snooping Querier Destination IGMP Proxy

---- ---- ------- ----------- ---- -------- ------- ----------- -----------

64 10.6.4.252 255.255.255.0 00:0b:86:01:99:00 disabled disabled 10.6.4.252 CP disabled

65 10.6.5.252 255.255.255.0 00:0b:86:01:99:00 disabled disabled 10.6.5.252 CP disabled

1 10.6.2.252 255.255.255.0 00:0b:86:01:99:00 disabled disabled 10.6.2.252 CP disabled

66 10.6.6.252 255.255.255.0 00:0b:86:01:99:00 disabled disabled 10.6.6.252 CP disabled

63 10.6.3.252 255.255.255.0 00:0b:86:01:99:00 disabled disabled 10.6.3.252 CP disabled

The output of this command includes the following parameters:

Parameter

Description

VLAN

A VLANVirtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN. ID number.

Addr

IP address of a VLANVirtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN. router.

Netmask

SubnetSubnet is the logical division of an IP network. mask for the IP address.

MAC Address

MACMedia Access Control. A MAC address is a unique identifier assigned to network interfaces for communications on a network. destination address.

IGMP

Indicates if IGMPInternet Group Management Protocol. Communications protocol used by hosts and adjacent routers on IP networks to establish multicast group memberships. is enabled (or disabled) on the interface.

Snooping

Indicates if IGMP snoopingIGMP snooping prevents multicast flooding on Layer 2 network by treating multicast traffic as broadcast traffic. Without IGMP snooping, all streams could be flooded to all ports on that VLAN. When multicast flooding occurs, end-hosts that happen to be in the same VLAN would receive all the streams only to be discarded without snooping. is enabled (or disabled).

Querier

IP address of an IGMPInternet Group Management Protocol. Communications protocol used by hosts and adjacent routers on IP networks to establish multicast group memberships. querier.

Destination

Traffic destination.

IGMP Proxy

Indicates if IGMPInternet Group Management Protocol. Communications protocol used by hosts and adjacent routers on IP networks to establish multicast group memberships. proxy is enabled (or disabled).

The following example displays the current IGMPInternet Group Management Protocol. Communications protocol used by hosts and adjacent routers on IP networks to establish multicast group memberships. configuration settings for Mobility Master.

(host) [mynode] #show ip igmp config

 

IGMP Config

-----------

Name Value

---- -----

robustness-variable 2

query-interval 30

query-response-interval 100

startup-query-interval 31

startup-query-count 2

last-member-query-interval 10

last-member-query-count 2

version-1-router-present-timeout 400

version-2-router-present-timeout 400

max-members-per-group 300

quick-client-convergence enabled

ssm-range IANA standard range. 232.0.0.0/8

The output of this command includes the following parameters:

Parameter

Description

robustness-variable

This variable is increased from its default level of 2 to allow for expected packet loss on a subnetwork.

query-interval

Interval, in seconds, at which Mobility Master sends host-query messages to the multicast group address 224.0.0.1 to solicit group membership information.

query-response-interval

Maximum time, in .1 second intervals, that can elapse between when Mobility Master sends a host-query message and when it receives a response. This must be less than the query-interval.

startup-query-count

Number of queries that Mobility Master sends out on startup, separated by startup-query-interval. The default setting is the value of the robustness-variable parameter.

startup-query-interval

Interval, in seconds, at which Mobility Master sends general queries on startup. The default value of this parameter is 1/4 of the query-interval.

last-member-query-count

Number of group-specific queries that Mobility Master sends before assuming that there are no local group members.

last-member-query-interval

Maximum time, in seconds, that can elapse between group-specific query messages.

version-1-router-present-timeout

Timeout, in seconds, if Mobility Master detects a version 1 IGM router.

version-2-router-present-timeout

Timeout, in seconds, if Mobility Master detects a version 2 IGM router.

The following examples displays the information on IGMPInternet Group Management Protocol. Communications protocol used by hosts and adjacent routers on IP networks to establish multicast group memberships. groups:

(host) [mynode] #show ip igmp group

 

IGMP Group Table

----------------

(Source,Group) Members

-------------- -------

(172.12.2.2, 232.0.0.2) 2

(172.12.2.2, 232.0.0.1) 2

(*, 224.0.0.252) 2

(*, 239.255.255.250) 2

 

Total Groups: 4

 

(host) [mynode] #show ip igmp group maddr 232.0.0.1 source 172.12.2.2

 

IGMP Group (172.12.2.2, 232.0.0.1) Table

----------------------------------------

Member MAC Vlan Destination Version Age

------ --- ---- ----------- ------- ---

172.13.0.4 00:00:00:00:00:00 13 0/0/0 0 4

172.12.255.252 98:fc:11:c6:20:04 13 Tunnel 9 3 4

Related Commands

Command

Description

ip igmp

This command configures IGMPInternet Group Management Protocol. Communications protocol used by hosts and adjacent routers on IP networks to establish multicast group memberships. timers and counters.

Command History

Release

Modification

ArubaOS 8.0.0.0

Command introduced.

Command Information

Platforms

License

Command Mode

All platforms

Base operating system.

Enable or Config mode on Mobility Master.

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