764 | PIM Sparse-Modew w w . d e l l . c o m | s u p p o r t . d e l l . c o mSet a Threshold for Switching to the SPTSet a Threshold for Switching to the SPT is available only on platform: eInitially, a single PIM-SM tree called a shared tree to distribute traffic. It is called shared because all trafficfor the group, regardless of the source, or the location of the source, must pass through the RP. The sharedtree is unidirectional; that is, all multicast traffic flows only from the RP to the receivers. Once a receiverreceives traffic from the RP, PM-SM switches to shortest path trees (SPT) to forward multicast traffic,which connects the receiver directly to the source.You can configure PIM to switch over to the SPT when the router receives multicast packets at or beyond aspecified rate.PIM-SM Graceful RestartPIM-SM Graceful Restart is supported only on platform ePIM-SM Graceful Restart is supported only on platform ex with FTOS 8.2.1.0 and later.When a PIM neighbor restarts and the liveliness timer for that neighbor expires, the join/prune statesreceived from the neighbor expire, and the corresponding interfaces are removed from the outgoing list ofmulticast entries. The effect of this is that active multicast sessions are brought down.IPv6 Filter inbound and outbound Bootstrap Routermessages per interface. ipv6 pim bsr-border INTERFACERemove candidate RP advertisements. clear ip pim rp-mapping EXEC PRIVILEGEIP Version Task Command Syntax Command ModeIPv4 Configure PIM to switch over to theSPT when the multicast packet rate isat or beyond a specified rate. Thekeyword infinity directs PIM to neverswitch to the SPT.ip pim spt-threshold {value | infinity}Default: 10 kbpsCONFIGURATIONIPv6 Configure PIM to switch over to theSPT when the multicast packet rate isat or beyond a specified rate. Thekeyword infinity directs PIM to neverswitch to the SPT.ip pim spt-threshold {value | infinity}Default: 10 kbpsCONFIGURATIONIP Version Task Command Syntax Command Mode
