Configures the router preference field value advertised in RAs. The options are high, medium, and low. This value is used to prioritize and select the default router when multiple routers are discovered.
Sets this router‘s preference over other routers, in the link, to be the default router. The options are high, low, and medium. The default value is medium.
The following points should be taken into consideration when configuring router preference:
For a router to be selected as a default router, the router‘s lifetime should not be equal to “0”.
To enable default router selection, using router information contained in RAs, configure default router selection on that interface.
Examples
nx9500-6C8809(config-ipv6-radv-policy-test)#router-preference high
nx9500-6C8809(config-ipv6-radv-policy-test)#show context
ipv6-router-advertisement-policy test
ra suppress
ra interval 200
managed-config-flag
nd-reachable-time global
router-lifetime 2000
advertise mtu
advertise hop-limit
router-preference high
check-ra-consistency
dns-server 2002::2 lifetime 3000
domain-name TechPubs lifetime infinite
nx9500-6C8809(config-ipv6-radv-policy-test)#
