display igmp group ssm-mapping

Function

The display igmp group ssm-mapping command displays information about multicast group entries established with SSM mapping.

Format

display igmp [ vpn-instance vpn-instance-name | all-instance ] group [ group-address | interface interface-type interface-number ]^* ssm-mapping [ verbose ]

display igmp [ vpn-instance vpn-instance-name | all-instance ] group ssm-mapping [ interface interface-type interface-number ] entry-number

Parameters

Parameter	Description	Value
vpn-instance vpn-instance-name	Displays group entries established with SSM mapping in a specified VPN instance.	The value must be an existing VPN instance name.
all-instance	Displays group entries established with SSM mapping in all instances.	-
group-address	Displays information about the specified multicast group entries established with SSM mapping. If this parameter is not specified, the command displays information about all multicast group entries established with SSM mapping.	The value ranges from 224.0.1.0 to 239.255.255.255, in dotted decimal notation.
interface interface-type interface-number	Displays information about multicast group entries established with SSM mapping on the specified interface. If this parameter is not specified, the command displays information about multicast group entries established with SSM mapping on all interfaces.	-
verbose	Displays detailed information about group membership established with SSM mapping. If the parameter is not specified, the command displays only the summary of group membership established with SSM mapping.	-
entry-number	Displays statistics about IGMP multicast groups established with SSM mapping.	-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

You can use the display igmp group ssm-mapping command to view information about multicast group entries that are established with SSM mapping. SSM mapping entries are configured using the ssm-mapping command.

Example

# Display summary of all multicast group entries established with SSM mapping.

<HUAWEI> display igmp group ssm-mapping
 
IGMP SSM mapping interface group report information of VPN-Instance: public net
 Limited entry of this VPN-Instance: -
 Vlanif100(192.168.101.1):
  Total 1 IGMP SSM-Mapping Group reported
   Group Address   Last Reporter   Uptime      Expires
   232.0.0.1       192.168.101.2   00:00:02    00:02:08

# Display detailed information about all multicast group entries established with SSM mapping.

<HUAWEI> display igmp group ssm-mapping verbose
Interface group report information of VPN-Instance: public net
 Limited entry of this VPN-Instance: -
 Vlanif100(192.168.101.1):
  Total entry on this interface: 1
  Limited entries on this interface: -
  Total 1 IGMP SSM-Mapping Group reported
   Group: 232.0.0.1
     Uptime: 00:00:15
     Expires: 00:01:55
     Last reporter: 192.168.101.2
     Last-member-query-counter: 0
     Last-member-query-timer-expiry: off
     Group mode: exclude
     Version1-host-present-timer-expiry: off
     Version2-host-present-timer-expiry: 00:01:55

# Display detailed information about IGMP multicast groups established with SSM mapping.

<HUAWEI> display igmp group ssm-mapping entry-number
Interface group report information of VPN-Instance: public net
  Total 4 IGMP SSM-Mapping Groups reported
 Vlanif200(10.36.1.10):
  Total 2 IGMP SSM-Mapping Groups reported
 Vlanif100(10.0.0.4):
  Total 2 IGMP SSM-Mapping Groups reported

**Table 1** Description of the **display igmp group ssm-mapping** command output
Item	Description
IGMP SSM mapping interface group report information of VPN-Instance	VPN instance to which IGMP groups on an interface belong. public net indicates the public network instance.
Group Address	Group address.
Last Reporter	Link-local address of the last host that sends a Multicast Listener Report message.
Limited entry of this VPN-Instance	Maximum number of entries that can be generated in the VPN instance.
Vlanif100(192.168.101.1)	Interface type and interface number (IP address).
Interface group report information of VPN-Instance	VPN instance to which IGMP groups on an interface belong.
Total entry on this interface	Total number of entries generated on the interface.
Limited entries on this interface	Maximum number of entries that can be generated on the interface.
Total 1 IGMP SSM-Mapping Group reported	Number of IGMP Report messages with SSM group addresses received on the interface.
Group	Group address.
Uptime	Amount of time since the last Report message is received. The time format is as follows: If the time is shorter than or equal to 24 hours, the format is hours:minutes:seconds. If the time is longer than 24 hours but shorter than or equal to one week, the format is days:hours. If the time is longer than one week, the format is weeks:days.
Expires	Timeout period of a group. The time format is as follows: If the time is shorter than or equal to 24 hours, the format is hours:minutes:seconds. If the time is longer than 24 hours but shorter than or equal to one week, the format is days:hours. If the time is longer than one week, the format is weeks:days.
Last-member-query-counter	Number of times Group-Specific Query messages are sent.
Last-member-query-timer-expiry	Length of the last member query timer. The timer starts only when a Leave message is received from a group member. The timer value is configured using the igmp lastmember-queryinterval command. The value off indicates that the last member query timer has not started.
Group mode	Filter mode of a group, which can be Include or Exclude. It is displayed only when the interface is running IGMPv3.
Version1-host-present-timer-expiry	Timeout interval of IGMPv1 hosts. IGMPv1 does not define the Leave message; therefore, memberships of IGMPv1 hosts are aged using a timer. The device starts the timer when receiving a Report message from an IGMPv1 host. The timer value is calculated using the following formula: IGMPv1 timeout interval = General group query interval x Robustness variable + Maximum response time for Query messages The general group query interval is configured using the igmp timer query command. The robustness variable is configured using the igmp robust-count command. The maximum response time for Query messages is configured using the igmp max-response-time command. The value off indicates that the device has not received any Report messages from IGMPv1 hosts.
Version2-host-present-timer-expiry	Timeout interval of IGMPv2 hosts. It is displayed only when the interface is running IGMPv3. The value off indicates that the device has not received any Report messages from IGMPv2 hosts.