Configuring Static Routes For Ipv6 - Cisco WS-C2960-24LC-S Software Configuration Manual

Chapter 29 Configuring IPv6 Host Functions
To return to the default configuration, use the no ipv6 icmp error-interval global configuration
command.
This example shows how to configure an IPv6 ICMP error message interval of 50 milliseconds and a
bucket size of 20 tokens.
Switch(config)#ipv6 icmp error-interval 50 20

Configuring Static Routes for IPv6

Static routes are manually configured and define an explicit route between two networking devices. The
benefits of static routes include security and resource efficiency. Static routes use less bandwidth than
dynamic routing protocols because there is no requirement for routes to be calculated and
communicated. The main disadvantage of using static routes is that static routes are not automatically
updated, as with a dynamic routing protocol, and must be manually reconfigured if the network topology
changes. Static routes are useful for smaller networks with only one path to an outside network or to
provide security for a larger network for certain types of traffic.
There are types of static routes:
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Directly attached static routes—Only the output interface is specified because the destination is
assumed to be directly attached to this interface. The packet destination is used as the next hop
address. A directly attached static route is valid only when the specified interface is IPv6-enabled
and is up.
Recursive static routes—Only the next hop is specified, and the output interface is derived from the
next hop. A recursive static route is valid only when the specified next hop results in a valid IPv6
output interface, the route does not self-recur, and the recursion depth does not exceed the maximum
IPv6 forwarding recursion depth.
Fully specified static routes—Both the output interface and the next hop are specified. The next hop
is assumed to be directly attached to the specified output interface. A fully specified route is valid
when the specified IPv6 interface is IPv6-enabled and up.
Floating static routes—Any of the three types of static routes can be floating static routes, used to
back up dynamic routes learned through configured routing protocols. A floating static route is
configured with a less efficient administrative distance than the routing protocol it is backing up.
Therefore, the dynamic route is always used for routing traffic in preference to the floating static
route. If the dynamic route is lost, the floating static route is used in its place.
Catalyst 2960 Switch Software Configuration Guide
Configuring IPv6
29-9