Static route types

You can configure these types of static IPv6 routes:

Standard: The static route consists of:

  • Destination network prefix

  • Link-local IPv6 address and VLAN ID of the (next-hop router) gateway IPv6 address

Interface-based: The static route consists of:

  • Destination network address or host and a corresponding network prefix

  • VLAN interface through which you want the routing switch to send traffic for the route

Null (discard): Null routes include the following:

Default: When IPv6 routing is enabled, a route for the ::1/128 network is created and traffic to this network is rejected (dropped). The loopback address (lo0) is entered as the gateway. This route is for all traffic to the "loopback" network, with the single exception of traffic to the host address of the switch's loopback interface.

Configured: Provides a route that is used as a backup route for discarding traffic where the primary route is unavailable. A configured null route consists of:

  • Destination network address or host and a corresponding network mask

  • Either the reject keyword (traffic dropped with ICMP notification to the sender) or blackhole keyword (traffic dropped without any ICMP notification).

Nondefault null routes created with the reject or blackhole keywords use a gateway of zero (0).

Figure 18: Example of static routes in an ECMP application illustrates the default and configured null route entries in the switch's routing table.