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 9 lists the show ipv6 mld interface command output fields.

Table 9: 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

Related Documentation