Default IPv6 gateway

Instead of using static or DHCPv6 configuration, a default IPv6 gateway for an interface (VLAN) is determined from the default router list of reachable or probably reachable routers the switch detects from periodic multicast RAs received on the interface. For a given interface, there can be multiple default gateways, with different nodes on the link using different gateways. If the switch does not detect any IPv6 routers that are reachable from a given interface, it assumes (for that interface) that it can reach only the other devices connected to the interface.

NOTE:

In IPv6 for the switches covered in this guide, the default route cannot be statically configured. Also, DHCPv6 does not include default route configuration.)