1384 CHAPTER 90: PIM C ONFIGURATION COMMANDSUse the undo bsr-policy command to remove the restriction of the BSR addressrange.By default, there are no restrictions on the BSR address range, namely all thereceived BSR messages are regarded to be valid.Example # Configure a legal BSR address range in the public instance so that only routerson the segment 10.1.1.0/24 can become the BSR. system-view[Sysname] acl number 2000[Sysname-acl-basic-2000] rule permit source 10.1.1.0 0.0.0.255[Sysname-acl-basic-2000] quit[Sysname] pim[Sysname-pim] bsr-policy 2000c-bsr (PIM view)Syntax c-bsr interface-type interface-number [ hash-length [ priority ] ]undo c-bsrView Public instance PIM view, VPN instance PIM viewParameter interface-type interface-number: Specifies an interface by its type and number.This configuration can take effect only if PIM-SM is enabled on the interface.hash-length: Hash mask length for RP selection calculation, in the range of 0 to32. If you do not include this keyword in your command, the corresponding globalsetting will be used.priority: Priority of the C-BSR, in the range of 0 to 255. If you do not include thiskeyword in your command, the corresponding global setting will be used. A largervalue of this argument means a higher priority.Description Use the c-bsr command to configure the specified interface as a C-BSR.Use the undo c-bsr command to remove the related C-BSR configuration.No C-BSR is configured by default.Related command: pim sm, c-bsr hash-length (PIM view), c-bsr priority (PIM view), and c-rp(PIM view).Example # Configure Ethernet 1/0 to be a C-BSR in the public instance. system-view[Sysname] pim[Sysname-pim] c-bsr ethernet 1/0