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Cisco IOS in a Nutshell, 2nd Edition by James Boney

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Name

ip route-cache — interface

Synopsis

ip route-cache [cbus] [flow] [same-interface] [cef] [distributed]
no ip route-cache

Configures

The route cache for an interface

Default

Enabled for most interfaces

Description

A route cache stores a route in a temporary table for the duration of a network session. When the session is completed or the session times out, the routing entry is removed from the route cache. The no form of this command disables the route cache, which causes the router to look up the route for each packet of the network session. In some applications, this can be the desired behavior; see Chapter 8.

cbus

Optional. Enables fast switching and autonomous switching.

flow

Optional. Enables the Route Switch Processor to perform flow switching.

same-interface

Optional. Enables fast switching packets back out the interface on which they arrived.

cef

Optional. Enables Cisco Express Forwarding on an interface after it has been disabled globally.

distributed

Optional. Enables VIP distributed switching.

Example

The route cache can be disabled with the no form of this command.

interface serial 0
  no ip route-cache

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