spbm <1-100>
      smlt-virtual-bmac
   
   
      Configure the virtual Backbone MAC (B-MAC) address, which is shared and advertised by both
         peers. Configuration of this command is optional.
    
      
      Command Parameters
         
         
            
               - <1-100>
- Specifies the SPBM instance
                  ID.
- 0x00:0x00:0x00:0x00:0x00:0x00
- Specifies the virtual MAC address.
                  SMLT virtual B-MAC is the optional configuration. If SMLT virtual B-MAC is not
                  configured, the system derives SMLT virtual B-MAC from the configured SMLT peer
                  system ID and the nodal MAC of the device (IS-IS system ID). 
- The system compares the nodal MAC
                  of the device with the SMLT peer system ID configured and takes the small one,
                  plus 0x01, as the SMTL virtual B-MAC. The system also derives SMLT split BEB from
                  the SMLT peer system ID and nodal MAC of the device. 
- The device with the lower system
                  ID is primary, the device with the higher system ID is secondary.
Command Mode
         
         IS-IS Router Configuration