MLD

ipv6 mld snooping

Command Objective: This command enables MLD snooping in the switch or a specific VLAN.

Memory resources required by the MLDS module are allocated and the module starts running. It initializes semaphore creation, timer task RBTree, hash table, RBT Tree nodes MLD snooping is enabled and disabled globally in all the existing VLAN interfaces.

The no form of this command disables MLD snooping in the switch or a specific VLAN.

The MLDS can be enabled for a VLAN, only if the MLDS is started in the switch and the VLAN is activated.

Syntax:

ipv6 mld snooping
no ipv6 mld snooping

Mode: Global Configuration Mode/ Config-VLAN Mode.

ipv6 mld snooping report-suppression-interval

Command Objective: This command sets the MLD snooping report-suppression interval for which MLDv1 report messages do not get forwarded onto the router ports for the same group.

This value ranges is between 1 and 25. This timer isused when both proxy and proxy-reporting are disabled. This timer is started as soon as a report message for that group is forwarded out. Within this interval if another report for the same group arrives, it will not be forwarded.

The no form of this command sets the MLD snooping report- suppression interval to its default value.

Syntax:

ipv6 mld snooping report-suppression-interval <(1-25) seconds>
no ipv6 mld snooping report-suppression-interval

Mode: Global Configuration Mode.

ipv6 mld snooping group-query-interval

Command Objective: This command sets the time interval after which the switch sends a group specific query on a port. The value ranges between 2 and 5.

The no form of this command sets the MLDS queriy interval to default value.

Syntax:

ipv6 mld snooping group-query-interval <(2 - 5) seconds>
no ipv6 mld snooping group-query-interval

Mode: Global Configuration Mode.

ipv6 mld snooping version

Command Objective: This command configures the operating version of the MLD snooping switch for a specific VLAN.

The configuration can be done only for the VLANs that are activated in the switch.

Syntax: ipv6 mld snooping version {v1 | v2}

Parameter Description:

v1: Configures the version as MLDv1. MLDS report is accessed only with group address. It is provided with leave request option.
v2: Configures the version as MLDv2. MLDS report is accessed with source and group address.

Mode: Config-VLAN Mode.

ipv6 mld snooping fast-leave

Command Objective: This command enables fast leave processing for a specific VLAN. When fast leave is disabled, on reception of a leave message the switch checks if there are any interested receivers for the group by sending a group specific query before removing the port from the forwarding table. If fast leave is enabled, the switch does not send a group specific query and immediately removes the port from the forwarding table.

The no form of the command disables fast leave processing for a specific VLAN.

The configuration can be done only for the VLANs that are activated in the switch.

Syntax:

ipv6 mld snooping fast-leave
no ipv6 mld snooping fast-leave

Mode: Config-VLAN Mode.

ipv6 mld snooping querier

Command Objective: This command configures the MLD snooping switch as a querier for a specific VLAN. The switch starts sending general queries at regular time intervals. When the router port gets operationally down and there are no router ports in the switch, the switch continues the querier functionality.

The no form of this command configures the MLD snooping switch as non-querier for a specific VLAN.

The configuration can be done only for the VLANs that are activated in the switch.

Syntax:

ipv6 mld snooping querier
no ipv6 mld snooping querier

Mode: Config-VLAN Mode.

ipv6 mld snooping query-interval

Command Objective: This command sets the time period for which the switch waits after sending a group specific query to determine if the hosts are still interested in a specific multicast group. The value ranges between 60 and 600. In proxy reporting mode, general queries are sent on all downstream interfaces with this interval, only if the switch is the Querier.

The no form of this command sets the MLDS queriy interval to default value.

The configuration can be done only for the VLANs that are activated in the switch.

Syntax:

ipv6 mld snooping query-interval <(60 - 600) seconds>
no ipv6 mld snooping query-interval

Mode: Config-VLAN Mode.

ipv6 mld snooping mrouter

Command Objective: This command configures statically the router ports for a VLAN.

The no form of this command deletes the statically configured router ports for a VLAN. By default the router port list is set to none.

The configuration can be done only for the VLANs that are activated in the switch.

The specified interface can be set as router ports for the VLAN, only if the interfaces are configured as member ports for that VLAN.

Syntax:

ipv6 mld snooping mrouter <interface-type> <0/a-b, 0/c, ...>
no ipv6 mld snooping mrouter <interface-type> <0/a-b, 0/c, ...>

Parameter Description:

<interface-type>: Clears all port-level spanning-tree statistics information for the specified type of interface. The interface can be:
- gigabitethernet: A version of LAN standard architecture that supports data transfer upto 1 Gigabit per second.
- port-channel: Logical interface that represents an aggregator which contains several ports aggregated together.
<0/a-b, 0/c, ...>: Sets the list of multicast router ports for the list of interfaces or a specific interface identifier. This value is a combination of slot number and port number separated by a slash. Port-channel ID is provided, for interface type port-channel. Use comma as a separator without space while configuring list of interfaces. Example: 0/1, 0/3 or 1, 3.

Mode: Config-VLAN Mode.

ipv6 mld snooping blocked-router

Command Objective: This command configures a static router-port as blocked router port.

The no form of the command resets the blocked router ports to normal router port.

The ports to be configured as blocked router ports, must not be configured as static router ports.

Syntax:

ipv6 mld snooping blocked-router <interface-type> <0/a-b, 0/c, ...>
no ipv6 mld snooping blocked-router <interface-type> <0/a-b, 0/c, ...>

Parameter Description:

<interface-type>: Clears all port-level spanning-tree statistics information for the specified type of interface. The interface can be:
- gigabitethernet: A version of LAN standard architecture that supports data transfer upto 1 Gigabit per second.
- port-channel: Logical interface that represents an aggregator which contains several ports aggregated together.
<0/a-b, 0/c, ...>: Sets the list of multicast router ports for the list of interfaces or a specific interface identifier. This value is a combination of slot number and port number separated by a slash. Port-channel ID is provided, for interface type port-channel. Use comma as a separator without space while configuring list of interfaces. Example: 0/1, 0/3 or 1, 3.

Mode: Config-VLAN Mode.

show ipv6 mld snooping mrouter

Command Objective: This command displays the router ports for all the VLANs or a specific VLAN. Interface, ports (type of ports) and switch details are displayed.

Syntax: show ipv6 mld snooping mrouter [Vlan <vlan-id>] [detail] [switch <switch_name>]

Parameter Description:

<vlan-id (1-4094)>: VLAN ID is a unique value that represents the specific VLAN. This value ranges between 1 and 4094.
detail: Displays detailed information about the router ports.
switch <switch_name>: Displays the router ports for the specified context. This value represents unique name of the switch context. This value is a string whose maximum size is 32. This parameter is specific to multiple instance feature.