Cisco Cisco IOS Software Release 12.4(6)T

The following example configures PPP on an asynchronous interface and enables MSCHAP V2 
authentication via RADIUS:

interface Async65

ip address 10.0.0.2 255.0.0.0

encapsulation ppp

async mode dedicated

no peer default ip address

ppp max-bad-auth 3

ppp authentication ms-chap-v2

exit

aaa authentication ppp default group radius

 radius-server host 10.0.0.2 255.0.0.0

 radius-server key secret

 radius-server vsa send authentication

 lists the release history for this feature.

Not all commands may be available in your Cisco IOS software release. For release information about a 
specific command, see the command reference documentation.

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 lists only the Cisco IOS software release that introduced support for a given feature in a given 

Cisco IOS software release train. Unless noted otherwise, subsequent releases of that Cisco IOS 
software release train also support that feature.

Displays information on AAA/TACACS+ authorization.

Displays information on traffic and exchanges in a network that is 
implementing PPP.

Displays information associated with RADIUS.

Configures a point-to-point interface not to reset itself immediately after an 
authentication failure but instead to allow a specified number of 
authentication retries.

radius-server vsa send Configures the network access server to recognize and use VSAs.