The command outputs in the following section are examples only; actual displays may differ depending on supported functionality and user configuration.
This command displays the multicast group and (S,G) addresses. If no grp-ip-address parameters are specified, then all IGMP group, (*,G) and (S,G) addresses are displayed.
IGMP Group Output
The following table describes the output fields for IGMP group information.
Label | Description |
IGMP Groups | Displays the IP multicast sources corresponding to the IP multicast groups that are statically configured. |
Fwd List | Displays the list of interfaces in the forward list. |
Blk List | Displays the list of interfaces in the bulk list. |
This command shows IGMP hosts information.
This command displays IGMP interface information.
IGMP Interface Output
The following table provides IGMP field descriptions.
Label | Description |
Interface | Specifies the interfaces that participate in the IGMP protocol. |
Adm Admin Status | Displays the administrative state for the IGMP protocol on this interface. |
Oper Oper Status | Displays the current operational state of IGMP protocol on the interface. |
Querier | Displays the address of the IGMP querier on the IP subnet to which the interface is attached. |
Querier Up Time | Displays the time since the querier was last elected as querier. |
Querier Expiry Timer | Displays the time remaining before the querier ages out. If the querier is the local interface address, the value will be zero. |
Cfg/Opr Version Admin/Oper version | Cfg The configured version of IGMP running on this interface. For IGMP to function correctly, all routers on a LAN must be configured to run the same version of IGMP on that LAN. Opr The operational version of IGMP running on this interface. If the cfg value is 3 but all of the routers in the local subnet of this interface use IGMP version v1 or v2, the operational version will be v1 or v2. |
Num Groups | The number of multicast groups which have been learned by the router on the interface. |
Policy | Specifies the policy that is to be applied on the interface. |
Group Address | Specifies the IP multicast group address for which this entry contains information. |
Up Time | Specifies the time since this source group entry got created. |
Last Reporter | Specifies the IP address of the source of the last membership report received for this IP Multicast group address on this interface. If no membership report has been received, this object has the value 0.0.0.0. |
Mode | The mode is based on the type of membership report(s) received on the interface for the group. In the 'include' mode, reception of packets sent to the specified multicast address is requested only from those IP source addresses listed in the source-list parameter of the IGMP membership report. In 'exclude' mode, reception of packets sent to the given multicast address is requested from all IP source addresses except those listed in the source-list parameter. |
V1 Host Timer | The time remaining until the local router will assume that there are no longer any IGMP version 1 members on the IP subnet attached to this interface. Upon hearing any IGMPv1 Membership Report, this value is reset to the group membership timer. While this time remaining is non-zero, the local router ignores any IGMPv2 Leave messages for this group that it receives on this interface. |
V2 Host Timer | The time remaining until the local router will assume that there are no longer any IGMP version 2 members on the IP subnet attached to this interface. Upon hearing any IGMPv2 Membership Report, this value is reset to the group membership timer. While this time remaining is non-zero, the local router ignores any IGMPv3 Leave messages for this group that it receives on this interface. |
Type | Indicates how this group entry was learned. If this group entry was learned by IGMP, it will be set to “dynamic”. For statically configured groups, the value will be set to 'static'. |
Compat Mode | Used in order for routers to be compatible with older version routers. IGMPv3 hosts MUST operate in version 1 and version 2 compatibility modes. IGMPv3 hosts MUST keep state per local interface regarding the compatibility mode of each attached network. A host's compatibility mode is determined from the Host Compatibility Mode variable which can be in one of three states: IGMPv1, IGMPv2 or IGMPv3. This variable is kept per interface and is dependent on the version of General Queries heard on that interface as well as the Older Version Querier Present timers for the interface. |
This command displays IGMP SSM translate configuration information.
IGMP Interface Output
The following table provides IGMP field descriptions.
Label | Description |
Group Range | Displays the address ranges of the multicast groups for which this router can be an RP. |
Source | Displays the unicast address that sends data on an interface. |
SSM Translate Entries | Displays the total number of SSM translate entries. |
This command displays static IGMP, (*,G) and (S,G) information.
Static IGMP Output
The following table provides static IGMP field descriptions.
Label | Description |
Source | Displays entries which represents a source address from which receivers are interested/not interested in receiving multicast traffic. |
Group | Displays the IP multicast group address for which this entry contains information. |
Interface | Displays the interface name. |
This command displays IGMP statistics information.
IGMP Statistics Output
The following table provides statistical IGMP field descriptions.
Label | Description |
IGMP Interface Statistics | The section listing the IGMP statistics for a particular interface. |
Message Type | Queries The number of IGMP general queries transmitted or received on this interface. |
Report The total number of IGMP V1, V2, or V3 reports transmitted or received on this interface. | |
Leaves The total number of IGMP leaves transmitted on this interface. | |
Received | Displays the total number of IGMP packets received on this interface. |
Transmitted | Column that displays the total number of IGMP packets transmitted from this interface. |
General Interface Statistics | The section listing the general IGMP statistics. |
Bad Length | Displays the total number of IGMP packets with bad length received on this interface. |
Bad Checksum | Displays the total number of IGMP packets with bad checksum received on this interface. |
Unknown Type | Displays the total number of IGMP packets with unknown type received on this interface. |
Bad Receive If | Displays the total number of IGMP packets incorrectly received on this interface. |
Rx Non Local | Displays the total number of IGMP packets received from a non-local sender. |
Rx Wrong Version | Displays the total number of IGMP packets with wrong versions received on this interface. |
Policy Drops | Displays the total number of times IGMP protocol instance matched the host IP address or group/source addresses specified in the import policy. |
No Router Alert | Displays the total number of IGMPv3 packets received on this interface which did not have the router alert flag set. |
This command displays IGMP status information.
If IGMP is not enabled, the following message appears:
IGMP Status Output
The following table provides IGMP status field descriptions.
Label | Description |
Admin State | Displays the administrative status of IGMP. |
Oper State | Displays the current operating state of this IGMP protocol instance on this router. |
Query Interval | The frequency at which IGMP query packets are transmitted. |
Last Member Query Interval | The maximum response time inserted into group-specific queries sent in response to leave group messages, and is also the amount of time between group-specific query messages. |
Query Response Interval | The maximum query response time advertised in IGMPv2 queries. |
Robust Count | Displays the number of times the router will retry a query. |
This command displays tunnel interface information.
This command clears IGMP or PIM database statistics on a specified interface or IP address.
This command clears IGMP statistics on a specified interface or IP address.
Note:
Interface and group/source cannot be specified at the same time. |
This command clears IGMP statistics on a specified interface or IP address.
This command enables the context to clear IGMP snooping-related data.
Clears the information on the IGMP snooping port database.
Encapsulation type | Syntax | Example |
null | port-id | 1/1/3 |
dot1q | port-id :qtag1 | 1/1/3:100 |
qinq | port-id :qtag1.qtag2 | 1/1/3:100.200 |
Clears information on the IGMP snooping queriers for the VPLS service.
Clears IGMP snooping statistics for the VPLS service.
Encapsulation type | Syntax | Example |
null | port-id | 1/1/3 |
dot1q | port-id :qtag1 | 1/1/3:100 |
qinq | port-id :qtag1.qtag2 | 1/1/3:100.200 |
This command enables debugging for IGMP group-interface.
The no form of the command disables debugging.
This command enables debugging for the IGMP host.
The no form of the command disables debugging.
This command enables debugging for IGMP interfaces.
The no form of the command disables the IGMP interface debugging for the specifies interface name or IP address.
This command enables debugging for IGMP multicast servers (MCS).
The no form of the command disables the IGMP interface debugging for the specifies interface name.
This command enables debugging for IGMP miscellaneous.
The no form of the command disables the debugging.
This command enables/disables debugging for IGMP packets.