Setting up your IPv6 RA policy
Is there a role for a DHCPv6 server in host configuration on a given VLAN, and what host services and policy will be configured? Affects M-bit and O-bit options (page VLAN context Neighbor Discovery (ND) configuration)
What is the ND policy that should be advertised? Includes hop-limit for host-generated traffic, the default router period, neighbor reachable time, and retransmit time for neighbor solicitations.
What prefixes should be advertised, and what prefixes should be suppressed? Prefixes configured on the routing switch VLAN interface will be included in RAs on that VLAN unless specifically denied.
What should be the maximum and minimum intervals (in seconds) for transmitting RAs?
Are there any VLANs on the routing switch where RAs should be suppressed?
- Will multiple routing devices be used to send RAs on a VLAN?
The first RA received by a host determines the default router for that host. Other routers included in subsequent RAs received by the host become backup default routers for that host.
What, if any, differences are acceptable in RAs from different routing devices?