To define the Source Specific Multicast (SSM) range of IP Multicast addresses, use the ipv6 mld-proxy ssm command in Global Configuration mode. To disable the SSM range, use the no form of this command.

Syntax

ipv6 mld-proxy ssm {default | range access-list}

no ipv6 mld-proxy ssm

Parameters

default—Defines the SSM range access list to FF3x::/32 (see rfc4607).

range access-list—Specifies the standard IPv6 access list name defining the SSM range.

Default Configuration

The command is disabled.

Command Mode

Global Configuration mode

User Guidelines

A new ipv6 mld-proxyssm command overrides the previous ipv6 mld-proxy ssm command.

Use the no ipv6 mld-proxy ssm command to remove all defined ranges.

Example

The following example shows how to configure SSM service for the default IPv6 address range and the IPv6 address ranges defined by access lists list1:

switchxxxxxx(config)# ipv6 access-list list1 permit FF7E:1220:2001:DB8::/64
switchxxxxxx(config)# ipv6 access-list list1 deny FF7E:1220:2001:DB1::1
switchxxxxxx(config)# ipv6 access-list list1 permit FF7E:1220:2001:DB1::/64
switchxxxxxx(config)# ipv6 pim mld-proxy range list1

To add downstream interfaces to a MLD proxy tree, use the ip mld-proxy command in Interface Configuration mode. To remove downstream from interfaces to a MLD proxy tree, use the no form of this command.

Syntax

ipv6 mld-proxy upstream-interface-id

no ipv6 mld-proxy

Parameters

• upstream-interface-id—Upstream Interface identifier.

Default Configuration

The protocol is disabled on the interface.

Command Mode

Interface Configuration mode

User Guidelines

Use the ipv6 mld-proxy command to add a downstream interface to a MLD proxy tree. If the proxy tree does not exist it is created.

Use the no format of the command to remove the downstream interface. When the last downstream interface is removed from the proxy tree it is deleted too.

To disable forwarding of IPv6 Multicast traffic from downstream interfaces, use the ipv6 mld-proxy downstream protected command in Global Configuration mode. To allow forwarding from downstream interfaces, use the no form of this command.

Syntax

ipv6 mld-proxy downstream protected

no ipv6 mld-proxy downstream protected

Parameters

This command has no arguments or keywords.

Default Configuration

Forwarding from downstream interfaces is allowed.

Command Mode

Global Configuration mode

User Guidelines

Use the pv6 mld-proxy downstream protected command to block forwarding from downstream interfaces.

Example

The following example prohibits forwarding from downstream interfaces:

switchxxxxxx(config)# ipv6 mld-proxy downstream protected

To disable or enable forwarding of IPv6 Multicast traffic from a given downstream interface, use the ipv6 mld-proxy downstream protected interface command in Interface Configuration mode. To return to default, use the no form of this command.

Syntax

ipv6 mld-proxy downstream protected interface {enabled | disabled}

no ipv6 mld-proxy downstream protected interface

Parameters

• enabled—Downstream interface protection on the interface is enabled. IPv6 Multicast traffic arriving on the interface will not be forwarded.

• disabled—Downstream interface protection on the interface is disabled. IPv6 Multicast traffic arriving on the interface will be forwarded.

Default Configuration

Global downstream protection configuration (see the ipv6 mld-proxy downstream protected command)

Command Mode

Interface Configuration mode

User Guidelines

Use the ipv6 mld-proxy downstream protected interface disabled command to block forwarding from the given downstream interface.

Use the ipv6 mld-proxy downstream protected interface enabled command to allow forwarding from the given downstream interface.

The command can be configured only for a downstream interface. When a downstream interface is removed from the MLD Proxy tree the configuration is removed too.

Example

The following example prohibits forwarding from downstream interface vlan 100:

switchxxxxxx(config)# interface vlan100
switchxxxxxx(config-if)# ipv6 mld-proxy downstream protected interface enabled
switchxxxxxx(config-if)# exit

To display information about interfaces configured for MLD Proxy, use the show ipv6 mld-proxy interface command in User EXEC mode or Privileged EXEC mode.

Syntax

show ipv6 mld-proxy interface [interface-id]

Parameters

• interface-id—(Optional) Display MLD Proxy information about the interface.

Command Mode

User EXEC mode

Privileged EXEC mode

User Guidelines

The show ipv6 mld-proxy interface command is used to display all interfaces where the MLD Proxy is enabled or to display the MLD Proxy configuration for a given interface.