1338 CHAPTER 87: MULTICAST ROUTING AND FORWARDING CONFIGURATION COMMANDS

Use the undo multicast boundary command to remove a multicast forwarding boundary.

By default, no multicast forwarding boundary is configured.

Note that:

A multicast forwarding boundary sets the boundary condition for the multicast groups in the specified range. If the destination address of a multicast packet matches the set boundary condition, the packet will not be forwarded.

If an interface needs to act as a forwarding boundary for multiple multicast groups, just carry out this command on the interface once for each group.

Assume that Set A and Set B are both multicast forwarding boundary sets to be configured, and B is a subset of A. If A has been configured on an interface, it is not allowed to configure B on the interface; if B has been configured on the interface before A is configured, the previously configured B will be removed.

Related command: display multicast boundary.

Example # Configure Ethernet 1/0 to be the forwarding boundary of multicast group 239.2.0.0/16.

<Sysname> system-view

[Sysname] interface ethernet 1/0

[Sysname-Ethernet1/0] multicast boundary 239.2.0.0 16

multicast forwarding-table downstream-limit

Syntax multicast forwarding-table downstream-limit limit

undo multicast forwarding-table downstream-limit

View System view, VPN instance view

Parameter limit: Maximum number of downstream nodes (namely, the maximum number of outgoing interfaces) for a single route in the multicast forwarding table. The value ranges from 0 to 128.

Description Use the multicast forwarding-table downstream-limit command to configure the maximum number of downstream nodes for a single route in the multicast forwarding table.

Use the undo multicast forwarding-table downstream-limit command to restore the system default.

By default, the maximum number of downstream nodes for a single route in the multicast forwarding table is 128.

The system-allowed maximum number varies with different device models. Refer to your specific device model.

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3Com MSR 30, MSR 50 manual Multicast forwarding-table downstream-limit, Related command display multicast boundary