HP 6125G HP 6125G & 6125G/XG Blade Switches IP Multicast Configuration - Page 140
PIM common feature configuration task list, Configuration prerequisites
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PIM common feature configuration task list Task Configuring a multicast data filter Configuring a hello message filter Configuring PIM hello options Configuring the prune delay Configuring PIM common timers Configuring join/prune message sizes Setting the DSCP value for PIM messages Remarks Optional Optional Optional Optional Optional Optional Optional Configuration prerequisites Before you configure PIM common features, complete the following tasks: • Configure any unicast routing protocol so that all devices in the domain are interoperable at the network layer. • Configure PIM-DM, or PIM-SM, or PIM-SSM. • Determine the ACL rule for filtering multicast data. • Determine the ACL rule defining a legal source address range for hello messages. • Determine the priority for DR election (global value/interface level value). • Determine the PIM neighbor timeout time (global value/interface value). • Determine the prune message delay (global value/interface level value). • Determine the prune override interval (global value/interface level value). • Determine the prune delay. • Determine the hello interval (global value/interface level value). • Determine the maximum delay between hello message (interface level value). • Determine the assert timeout time (global value/interface value). • Determine the join/prune interval (global value/interface level value). • Determine the join/prune timeout (global value/interface value). • Determine the multicast source lifetime. • Determine the maximum size of join/prune messages. • Determine the maximum number of (S, G) entries in a join/prune message. • Determine the DSCP value for PIM messages. Configuring a multicast data filter In either a PIM-DM domain or a PIM-SM domain, routers can check passing-by multicast data based on the configured filtering rules and determine whether to continue forwarding the multicast data. In other words, PIM routers can act as multicast data filters. These filters can help implement traffic control on one hand, and control the information available to receivers downstream to enhance data security on the other hand. 129
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