399Step Command Remarks1. Enter system view. system-view N/A2. Enter IPv6 PIM view. pim ipv6 N/A3. Disable the switchover toSPT.spt-switch-threshold infinity[ group-policy acl6-number[ order order-value ] ]Optional.By default, the device switches to the SPTimmediately after it receives the first IPv6multicast packet from the RPT.Configuring IPv6 BIDIR-PIMIPv6 BIDIR-PIM configuration task listTask RemarksEnabling IPv6 PIM-SM Required.Enabling IPv6 BIDIR-PIM Required.Configuring an RPConfiguring a static RPRequired.Use any approach.Configuring a C-RPEnabling embedded RPConfiguring C-RP timers globally Optional.Configuring a BSRConfiguring a C-BSR Required.Configuring an IPv6 BIDIR-PIM domain border Optional.Configuring global C-BSR parameters Optional.Configuring C-BSR timers Optional.Disabling BSM semantic fragmentation Optional.Configuring IPv6 administrativescopingEnabling IPv6 administrative scoping Optional.Configuring an IPv6 admin-scope zone boundary Optional.Configuring C-BSRs for each admin-scope zone Optional.Configuring IPv6 PIM common features Optional.Configuration prerequisitesBefore you configure IPv6 BIDIR-PIM, complete the following tasks:• Enable IPv6 forwarding and configure an IPv6 unicast routing protocol so that all devices in thedomain can communicate with each other at Layer 3.• Determine the IPv6 address of a static RP and the IPv6 ACL that defines the range of IPv6 multicastgroups to which the static RP is designated.