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Monitoring MLD Interfaces

Purpose

Display MLD information for interfaces on which you enabled MLD. You can use the brief keyword to see a summary of the information. You can use the count keyword to see the number of MLD interfaces.

Action

To display MLD information for all 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 MLD information for the 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