3Com Router 3000 Ethernet FamilyConfiguration Guide Chapter 2 Common Multicast Configuration3Com Corporation2-1Chapter 2 Common Multicast Configuration2.1 Common Multicast Configuration OverviewBoth multicast group management protocol and multicast routing protocol are involvedwith common multicast configuration tasks that include enabling multicast, configuringmulticast forwarding boundary, displaying multicast routing table and multicastforwarding table, etc.2.2 Common Multicast ConfigurationBasic common multicast configuration task is to:z Enable MulticastAdvanced common multicast configuration tasks are to:z Configure the minimum TTL of multicast packetsz Configure multicast forwarding boundaryz Configure the number limit of multicast routing entriesz Clear MFC forwarding entries or statisticsz Clear the routing entries in the multicast kernel routing table2.2.1 Enabling MulticastEnable multicast before enabling the multicast routing protocol.Perform the following configuration in system view.Table 2-1 Enable MulticastOperation CommandEnable Multicast multicast routing-enableDisable multicast undo multicast routing-enableBy default, multicast is disabled.Caution:Only when multicast is enabled, can other multicast configurations become effective.
