450network, and can significantly save the network bandwidth and reduce network traffic. Themulticast feature can be conveniently used to provide some new value-added services,including online live broadcast, network TV, remote education, remote medical service,network radio, realtime video/audio meeting that can be summarized in the following threefields:1) Multimedia and stream application.2) Data warehouse and financial (like stocks) application.3) Any point-to-multiple-points data distribution application.With the increasing of multimedia services in the IP network, multicast represents greatmarket potential, and multicast service is spreading quickly and widely used.16.2 Common Multicast Configurations16.2.1 Common Multicast Configuration Commandsz show ip mroute16.2.1.1 show ip mrouteCommand: show ip mroute [group_address] [source_address]Function: Display the IP multicast packet forwarding entries..Parameter: [group_address] specifies the group address for the forwarding entry to bedisplayed; [source_address] specifies the source address for the forwardingentry to be displayedDefault: No display by default.Command mode: Admin ModeUsage Guide: This command is used to display IP multicast forwarding entries, or theforwarding entries in the system FIB table for forwarding multicast packets.Example: Display all IP multicast forwarding entries.Switch # show ip mrouteName: Loopback, Index: 2001, State: 9 localaddr: 127.0.0.1, remote: 127.0.0.1Name: Vlan1, Index: 2005, State: 13 localaddr: 1.1.1.1, remote: 1.1.1.1Name: Vlan4, Index: 2006, State: 13 localaddr: 2.1.1.1, remote: 2.1.1.1Name: Vlan3, Index: 2007, State: 13 localaddr: 3.1.1.1, remote: 3.1.1.1Group Origin Iif Wrong Oif: TTL225.1.1.101 1.1.1.100 Vlan1 0 2006: 12007: 1239.255.0.1 9.1.1.100 Vlan4 0 2005: 1
