(Optional) Configuring a BSR Administrative Domain

Context

To facilitate PIM-SM domain management, a PIM-SM network is divided into multiple bootstrap router (BSR) administrative domains and a global domain. Each BSR administrative domain maintains only one BSR that serves specified multicast groups. Multicast groups that do not belong to any BSR administrative domain are served by the global domain. A device can join only one administrative domain, so devices in each administrative domain can forward multicast data independently. Data of multicast groups in the global domain can be forwarded through devices in any administrative domain.

When configuring the boundary of a BSR administrative domain on an IPv6 network, you can specify the group address range served by the domain and set a scope ID for the domain. On candidate BSRs (C-BSRs), you only need to specify the scope ID of the BSR administrative domain and do not need to specify the group address range served by the BSR administrative domain.

Procedure

Enable BSR administrative domain on all devices in the PIM-SM domain.
1. Run system-view
  The system view is displayed.
2. Run pim-ipv6
  The PIM-IPv6 view is displayed.
3. Run c-bsr admin-scope
  The BSR administrative domain is enabled.
Configure a BSR administrative domain boundary on an edge interface.
1. Run system-view
  The system view is displayed.
2. Run interface interface-type interface-number
  The interface view is displayed.
3. (Optional) On an Ethernet interface, run undo portswitch
  The interface is switched to Layer 3 mode.
  
  By default, an Ethernet interface works in Layer 2 mode.
  
  Only the S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730-H, S6730S-H, S6730-S, and S6730S-S support switching between Layer 2 and Layer 3 modes.
4. Run multicast ipv6 boundary { ipv6-group-address ipv6-group-mask-length | scope scope-id }
  The boundary of the BSR administrative domain is configured.
  - Multicast packets that belong to the BSR administrative domain cannot traverse the boundary.
  - After the scope ID of a BSR administrative domain is specified on an interface, multicast packets with this scope ID cannot be forwarded through the interface.
Configure the scope ID of the administrative domain served by the C-BSR in each BSR administrative domain.
1. Run system-view
  The system view is displayed.
2. Run pim-ipv6
  The PIM-IPv6 view is displayed.
3. Run c-bsr scope scope-id [ hash-length hash-length | priority priority ] ^*
  The scope ID of the administrative domain served by the C-BSR is specified.
Configure a C-BSR in the global domain.
1. Run system-view
  The system view is displayed.
2. Run pim-ipv6
  The PIM-IPv6 view is displayed.
3. Run c-bsr global [ hash-length hash-length | priority priority ] ^*
  A C-BSR is configured for the global administrative domain.