3Com Switch 7750 Configuration Guide

442 CHAPTER 44: COMMON MULTICAST CONFIGURATION
Enabling Multicast
Routing and Configuring
Limit on the Number of
Multicast Route Entries
c
CAUTION: The other multicast configurations do not take effect until multicast
routing is enabled.
Configuring Suppression
on the Multicast Source
Port
Configuring suppression on the multicast source port in system view
Configuring suppression on the multicast source port in Ethernet port
view
c
CAUTION: The following I/O Modules do not support the suppression on the
multicast source port feature: 3C16860, 3C16861, LS81FS24A, 3C16859, and
3C16858.
Configuring Suppression
on Multicast Wrongif
Packets
Introduction
When the switch receives a multicast packet, the switch will search the multicast
forwarding entry according to the source address and destination address of the
packet. If the matching forwarding entry is found and the packet is received on
the right ingress of the forwarding entry, the packet will be forwarded according
Table 353 Enable multicast routing and configure limit on the number of multicast route
entries
Operation Command Description
Enter system view system-view -
Enable multicast routing multicast routing-enable Required
Multicast routing must be
enabled before the multicast
group management protocol
and the multicast routing
protocol are configured.
Configure limit on the
number of multicast route
entries
multicast route-limit limit Optional
By default, the limit on the
number of multicast route
entries is 1,024.
Table 354 Configure suppression on the multicast source port
Operation Command Description
Enter system view system-view -
Configure suppression on the
multicast source port
multicast-source-deny
enable [ interface
interface-list ]
Required
The suppression on the
multicast source port feature
is disabled by default.
Table 355 Configure suppression on the multicast source port
Operation Command Description
Enter system view system-view -
Enter Ethernet port view interface interface-type
interface-number
-
Configure suppression on the
multicast source port
multicast-source-deny
enable
Optional
The suppression on the
multicast source port feature
is disabled by default.