3Com Switch 8800 Configuration Guide Table of ContentsTOC-923.1.3 Application of Multicast ....................................................................................... 23-723.2 Implementation of IP Multicast....................................................................................... 23-723.2.1 IP Multicast Addresses........................................................................................ 23-723.2.2 IP Multicast Protocols.......................................................................................... 23-923.3 RPF Mechanism for IP Multicast Packets ................................................................... 23-10Chapter 24 IGMP Snooping Configuration ............................................................................... 24-124.1 IGMP Snooping Overview ............................................................................................. 24-124.1.1 IGMP Snooping Principle .................................................................................... 24-124.1.2 Implement IGMP Snooping ................................................................................. 24-224.2 IGMP Snooping Configuration ....................................................................................... 24-424.2.1 Enabling/Disabling IGMP Snooping.................................................................... 24-424.2.2 Configuring Router Port Aging Time ................................................................... 24-524.2.3 Configuring Maximum Response Time............................................................... 24-524.2.4 Configuring Aging Time of Multicast Group Member Ports ................................ 24-624.2.5 Configuring Unknown Multicast Packets not Broadcasted within a VLAN ......... 24-624.3 Displaying and debugging IGMP Snooping................................................................... 24-724.4 IGMP Snooping Configuration Example........................................................................ 24-724.4.1 Enable IGMP Snooping....................................................................................... 24-724.5 Troubleshoot IGMP Snooping ....................................................................................... 24-8Chapter 25 Multicast VLAN Configuration................................................................................ 25-125.1 Multicast VLAN Overview .............................................................................................. 25-125.2 Multicast VLAN Configuration........................................................................................ 25-125.3 Multicast VLAN Configuration Example......................................................................... 25-2Chapter 26 Common Multicast Configuration.......................................................................... 26-126.1 Introduction to Common Multicast Configuration........................................................... 26-126.2 Common Multicast Configuration................................................................................... 26-126.2.1 Enabling Multicast ............................................................................................... 26-126.2.2 Configuring multicast route number limit............................................................. 26-226.2.3 Clearing MFC Forwarding Entries or Its Statistic Information............................. 26-226.2.4 Clearing Route Entries from the Kernel Multicast Routing Table ....................... 26-226.3 Controlled Multicast Configuration................................................................................. 26-326.3.1 Controlled Multicast Overview............................................................................. 26-326.3.2 Configuring Controlled Multicast ......................................................................... 26-326.3.3 Controlled Multicast Configuration Example ....................................................... 26-426.4 Displaying and Debugging Common Multicast Configuration ....................................... 26-5Chapter 27 IGMP Configuration ................................................................................................. 27-127.1 IGMP Overview.............................................................................................................. 27-127.1.1 Introduction to IGMP ........................................................................................... 27-127.2 IGMP Configuration ....................................................................................................... 27-227.2.1 Enabling Multicast ............................................................................................... 27-327.2.2 Enabling IGMP on an Interface ........................................................................... 27-3
