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Ip rip authentication – Enterasys Networks X-Pedition XSR CLI User Manual

Page 201

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RIP Commands

XSR CLI Reference Guide 5-125

ip rip authentication

This command sets or deletes the single authentication key used for RIP authentication on the 
interface. Authentication can be used only if a key exists. Deleting an existing key disables the use 
of authentication for RIP.

Syntax

ip rip authentication key text

Syntax of the “no” Form

The no form of this command deletes the specified key and prevents RIP from using 
authentication:

no ip rip authentication key text

Mode

Interface configuration: 

XSR(config-if<xx>)#

Default

No authentication key

Example

The following example sets the authentication mode as text and the key text as phone on 
FastEthernet port 1:

XSR(config)#interface fastethernet 1
XSR(config-if)#ip rip authentication key phone
XSR(config-if)#ip rip authentication mode text

RIP Example

The following example, as shown in 

Figure 5‐2

, enables RIP on both FastEthernet interfaces of 

Router 1, also enabling routing exchanges on the serial link Router 1‐Router 2 (Serial port 2). 

Note: This type of filtering might prove problematic in situations where you want to filter an exact
route (for RIP v2). For example, if you want to filter route 10.0.0.0/8, a filter set as access-list 1
deny 10.0.0.0 0.255.255.255
will not suffice, because subnets such as 10.0.0.0/9, 10.0.0.0/
10 and so on will also be denied. So, to restrict the filter to 10.0.0.0/8 only, configure an extended
access list with the following format: access-list 101 deny 10.0.0.0 0.0.0.255
255.0.0.0 0.0.0.0

text

Identifies the key. Valid values are strings of 16 characters or less. 
Spaces can be used if the complete key is bounded by quotations.

Note: The command refers to one key only, not a key chain.