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Run the command set l3-interface vlan-interface ipv6-nd router-preference to set the IPv6 Default Router Preference. Routers may include the default router preference in RA packets to signal to nodes the router preference in low, medium or high. Router preference is sent using the unused bits in the RA packet. The hosts that do not implement the default router preference will ignore these bits. 

Command Syntax

set l3-interface vlan-interface <vlan-interface> ipv6-nd router-preference <low|medium|high>

delete l3-interface vlan-interface <vlan-interface> ipv6-nd router-preference


vlan-interface <vlan-interface>Specifies the VLAN interface name.
router-preference <low|medium|high>

Specifies the default router preference, the three possible values are low, medium and high.

  • low:           Specifies a low default router preference.
  • medium:   Specifies a medium default router preference. 
  • high:       Specifies a high default router preference.

The default is medium default router preference.


  • The command below sets the default router preference to low..
admin@XorPlus# set l3-interface vlan-interface vlan4001 ipv6-nd router-preference low
admin@XorPlus# commit

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