Command Manual – Multicast
H3C S7500E Series Ethernet Switches
Chapter 6 Multicast Routing and Forwarding
Configuration Commands
6-13
Description
Use the multicast boundary command to configure a multicast forwarding boundary.
Use the undo multicast boundary command to remove a multicast forwarding
boundary.
By default, no multicast forwarding boundary is configured.
Note that:
z 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.
z 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.
z 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 commands: display multicast boundary.
Examples
# Configure VLAN-interface 100 to be the forwarding boundary of multicast group
239.2.0.0/16.
<Sysname> system-view
[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] multicast boundary 239.2.0.0 16
6.1.9 multicast forwarding-table downstream-limit
Syntax
multicast forwarding-table downstream-limit limit
undo multicast forwarding-table downstream-limit
View
System view
Parameters
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 the maximum allowable number.
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