IP R
OUTING
C
OMMANDS
37-20
ip rip authentication key
This command enables authentication for RIPv2 packets and to specify
the key that must be used on an interface. Use the no form to prevent
authentication.
Syntax
ip rip authentication key key-string
no ip rip authentication
key-string - A password used for authentication.
(Range: 1-16 characters, case sensitive)
Command Mode
Interface Configuration (VLAN)
Default Setting
No authentication
Command Usage
• This command can be used to restrict the interfaces that can exchange
RIPv2 routing information. (Note that this command does not apply
to RIPv1.)
• For authentication to function properly, both the sending and
receiving interface must be configured with the same password.
Example
This example sets an authentication password of “small” to verify
incoming routing messages and to tag outgoing routing messages.
Related Commands
ip rip authentication mode (37-21)
Console(config)#interface vlan 1
Console(config-if)#ip rip authentication key small
Console(config-if)#
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