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    Monitoring MLD Statistics

    Purpose

    Display MLD information for interfaces on which you enabled MLD.

    Action

    To display statistics, including hardware multicast packet replication status, for all IPv6 interfaces on which you enabled MLD:

    host1:boston#show ipv6 mld interface
    
    Interface ATM2/0.103 address 13.0.0.1/255.255.255.0
    Administrative state enabled, Operational state enabled
    Interface parameters:
        Version 2
        State Querier
        Query Interval 125 secs, 125 secs before the next query
        Other querier present interval 250 secs
        Maximum response time 255 (in 10ths of a second)
        Last member query interval 10 (in 10ths of a second)
        Robustness 3
        No inbound access group
        No inbound access source-group
        No inbound apply-oif-map
        Immediate Leave: disabled
    Explicit Host Tracking: enabled
    Max-Group limit: No Limit
    Admission-Bandwidth limit: No limit
    IOA Packet Replication: None
        Group Count: 1
    Interface statistics:
        Rcvd: 2 reports, 0 leaves, 0 wrong version queries
        Sent: 2 queries
        Groups learnt: 1
    Counts: 0 down, 0 init state, 1 querier, 0 non-querier, 1 Total

    To display statistics, including hardware multicast packet replication status, for a particular IPv6 interface on which you enabled MLD:

    host1#show ipv6 mld interface gigabitEthernet 3/0.0
    Interface GigabitEthernet3/0.0 address 10.1.1.1/255.255.255.0
    Administrative state enabled, Operational state enabled
    Interface parameters:
        Version 1
        State Querier
        Query Interval 125 secs, 123 secs before the next query
        Other querier present interval 250 secs
        Maximum response time 100 (in 10ths of a second)
        Last member query interval 10 (in 10ths of a second)
        Robustness 3
        No inbound access group
        No inbound access source-group
        No inbound apply-oif-map
        Immediate Leave: disabled
    Explicit Host Tracking: enabled
    Max-Group limit: No Limit
        Group Count: 0
        IOA packet replication gigabitEthernet 3/8.1
    Interface statistics:
        Rcvd: 0 reports, 0 leaves, 0 wrong version queries
        Sent: 14 queries
        Groups learnt: 0
    Counts: 0 down, 0 init state, 1 querier, 0 non-querier, 1 Total

    Meaning

    Table 1 lists the show ipv6 mld interface command output fields.

    Table 1: show ipv6 mld interface Output Fields

    Field Name

    Field Description

    Interface

    Type of interface and interface specifier. For details about interface types and specifiers, see Interface Types and Specifiers in JunosE Command Reference Guide.

    address

    IPv6 link-local address of the interface

    Administrative state

    Status of the interface in the software: enabled or disabled

    Operational state

    Physical status of the interface: enabled or disabled

    Version

    MLD version

    State

    Function of the interface: querier or nonquerier

    Query Interval

    Time interval at which this interface sends query messages

    Other querier present interval

    Time that the interface waits before declaring itself as the querier

    Maximum response time

    Time interval during which this interface expects a host to respond

    Graceful restart

    Status of graceful restart: active or complete

    Last member query interval

    Time that this interface waits before sending a new query to a host that sends a group leave message

    Robustness

    Number of times this interface sends MLD messages

    Inbound access group

    Information about IPv6 access lists configured with the ipv6 mld access-group command

    No inbound access group

    No IPv6 access list configured with the ipv6 mld access-group command

    Inbound access source-group

    Information about IPv6 access lists configured with the ipv6 mld access-source-group command

    No inbound access source-group

    No IPv6 access list configured with the ipv6 mld access-source-group command

    Inbound apply-oif-map

    Information about OIF map names configured with the ipv6 mld apply-oif-map command

    No inbound apply-oif-map

    No OIF map name configured with the ipv6 mld apply-oif-map command

    Immediate Leave

    Setting of the ipv6 mld immediate-leave command: enabled or disabled

    Explicit Host Tracking

    Setting of the ipv6 mld explicit-tracking command: enabled or disabled

    Max-Group limit

    Number of MLD groups that the interface can accept, as configured with the ipv6 mld group limit command

    Group Count

    Number of MLD groups that the interface has accepted

    IOA packet replication

    Hardware multicast packet replication interface to which egress multicast packets on this interface are redirected

    Interface statistics Rcvd

    Information about MLD messages received on this interface:

    • reports—Number of group multicast listener reports received
    • leaves—Number of group multicast listener done messages received
    • wrong version queries—Number of multicast listener queries received from devices running a different version of MLD
    • Interface statistics Sent—Number of MLD messages this interface has sent
    • Interface statistics Groups learnt—Number of groups this interface has discovered

    Counts

    Total number of MLD interfaces

    Published: 2014-08-20