Configuring a Multicast Boundary

Pre-configuration Tasks

Before configuring the multicast boundary, complete the following tasks:

Configure a unicast routing protocol to ensure normal unicast routing on the network.
Run the multicast routing-enable command in the system view to enable Layer 3 multicast routing globally.

Context

To restrict forwarding of multicast packets sent to a multicast group within a range, configure a multicast boundary on interfaces. Once the multicast boundary is configured on an interface, multicast packets sent to the group cannot be forwarded through the interface.

Procedure

Run system-view
The system view is displayed.
Run interface interface-type interface-number
The interface view is displayed.
(Optional) On an Ethernet interface, run undo portswitch
The interface is switched to Layer 3 mode.

By default, an Ethernet interface works in Layer 2 mode.

Only the S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730-H, S6730S-H, S6730-S, and S6730S-S support switching between Layer 2 and Layer 3 modes.
Run multicast boundary group-address { mask | mask-length }
A multicast boundary is configured on the interface.

Verifying the Configuration

After configuring a multicast boundary on interfaces, check the multicast routing table and information about the multicast boundary on the interfaces to verify that the multicast network can operate normally.

Run either of the following commands to check the multicast routing table:
- display multicast routing-table [ group-address [ mask { group-mask | group-mask-length } ] | source-address [ mask { source-mask | source-mask-length } ] | incoming-interface { interface-type interface-number | register } | outgoing-interface { include | exclude | match } { interface-type interface-number | register | none } ] ^* [ outgoing-interface-number [ number ] ]
Run the display multicast boundary [ group-address [ mask | mask-length ] ] [ interface interface-type interface-number ] command to check information about the multicast boundary configured on an interface.