dynamic route to be chosen over a static route, you can configure the static route with a higher
administrative distance than the dynamic route.
Configuring a static route in a non-default VRF or User VRF
To configure a static IPv6 route for a destination network with the prefix 2001:DB8::0/32, a next-hop
gateway with the global address 2001:DB8:0:ee44::1, in the non-default VRF named "blue", enter the
following at the general configuration prompt.
device(config)# ipv6 route vrf blue 2001:DB8::0/32 2001:DB8:0:ee44::1
Syntax: [no] ipv6 route vrf vrf-name dest-ipv6-prefix/prefix-length next-hop-ipv6-address
The dest-ip-addr is the route’s destination. The dest-mask is the network mask for the route’s
destination IPv6 address.
The vrf-name is the name of the VRF that contains the next-hop router (gateway) for the route.
The next-hop-ip-addr is the IPv6 address of the next-hop router (gateway) for the route.
NOTE
The vrf needs to be a valid VRF to be used in this command.
IPv6 over IPv4 tunnels
NOTE
This feature is supported only with the IPv6 Layer 3 license on FSX devices and the full Layer 3 image
on other devices.
To enable communication between isolated IPv6 domains using the IPv4 infrastructure, you can
manually configure IPv6 over IPv4 tunnels that provide static point-point connectivity.
As shown in the following illustration, these tunnels encapsulate an IPv6 packet within an IPv4 packet.
FIGURE 2 IPv6 over an IPv4 tunnel
In general, a manually configured tunnel establishes a permanent link between switches in IPv6
domains. A manually configured tunnel has explicitly configured IPv4 addresses for the tunnel source
and destination.
Configuring a static route in a non-default VRF or User VRF
FastIron Ethernet Switch Administration Guide 141
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