3Com Switch 7750 Configuration Guide Guide

404 CHAPTER 41: COMMON MULTICAST CONFIGURATION
Three kinds of tables affect data transmission. The correlations of them are:
■ Each multicast routing protocol has its own multicast routing table.
■ The multicast routing information of all multicast routing protocols is
integrated to form the core multicast routing table.
■ The core multicast routing table is consistent with the multicast forwarding
table, which is in really in charge of multicast packet forwarding.
Display the information about
the multicast routing table
display multicast
routing-table [
group-address [ mask {
group-mask | mask-length } ] |
source-address [ mask {
group-mask | mask-length } ] |
incoming-interface {
interface-type
interface-number | register }
]*
You can execute the display
commanding any view.
Display the information about
the multicast forwarding table
display multicast
forwarding-table [
group-address [ mask {
group-mask | mask-length } ] |
source-address [ mask {
group-mask | mask-length } ] |
incoming-interface {
interface-type
interface-number ] register }
]*
Display the information about
the multicast forwarding
tables containing port
information
display mpm
forwarding-table [
group-address ]
Display the information about
IP multicast groups and MAC
multicast groups in one VLAN
or all the VLANs on the switch
display mpm group [ vlan
vlan-id ]
Table 325 Display common multicast configuration
Operation Command Description