(Optional) Configuring a BSR Administrative Domain

Context

To facilitate PIM domain management, a PIM 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 for multicast groups in the global domain can be forwarded through devices in any administrative domain.

The maximum range of multicast groups that a BSR administrative domain can serve is 239.0.0.0 to 239.255.255.255. Multicast addresses in this range are used as private group addresses.

Procedure

Enable BSR administrative domain on all devices in the PIM domain.
1. Run system-view
  The system view is displayed.
2. Run pim [ vpn-instance vpn-instance-name | all-instance ]
  The PIM 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 boundary group-address { mask | mask-length }
  The boundary of the BSR administrative domain is configured.
  
  Multicast packets that belong to the BSR administrative domain cannot traverse the boundary.
Configure a group address range for the C-BSR in each BSR administrative domain.
1. Run system-view
  The system view is displayed.
2. Run pim [ vpn-instance vpn-instance-name | all-instance ]
  The PIM view is displayed.
3. Run c-bsr group group-address { mask | mask-length } [ hash-length hash-length | priority priority ] ^*
  A group address range is configured for the C-BSR in each BSR administrative domain.
Configure a C-BSR in the global domain.
1. Run system-view
  The system view is displayed.
2. Run pim [ vpn-instance vpn-instance-name | all-instance ]
  The PIM view is displayed.
3. Run c-bsr global [ hash-length hash-length | priority priority ] ^*
  A C-BSR is configured for the global administrative domain.