Operation Manual – MulticastH3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration7-167.2 Configuring PIM-DM7.2.1 PIM-DM Configuration Task ListComplete these tasks to configure PIM-DM:Task RemarksEnabling PIM-DM RequiredEnabling State Refresh OptionalConfiguring State Refresh Parameters OptionalConfiguring PIM-DM Graft Retry Period OptionalConfiguring PIM Common Information Optional7.2.2 Configuration PrerequisitesBefore configuring PIM-DM, complete the following task:z Configure any unicast routing protocol so that all devices in the domain areinteroperable at the network layer.Before configuring PIM-DM, prepare the following data:z The interval between state refresh messagesz Minimum time to wait before receiving a new refresh messagez TTL value of state refresh messagesz Graft retry period7.2.3 Enabling PIM-DMWith PIM-DM enabled, a router sends hello messages periodically to discover PIMneighbors and processes messages from PIM neighbors. When deploying a PIM-DMdomain, you are recommended to enable PIM-DM on all interfaces of non-borderrouters (border routers are PIM-enabled routers located on the boundary of BSRadmin-scope regions).Follow these steps to enable PIM-DM:To do... Use the command... RemarksEnter system view system-view —Enable IP multicastroutingmulticastrouting-enableRequiredDisable by defaultEnter interface view interface interface-typeinterface-number —
