ppp chap refuse
To refuse Challenge Handshake Authentication Protocol (CHAP) authentication from peers requesting it, use
the ppp chap refuse command in interface configuration mode. To allow CHAP authentication, use the no
form of this command.
ppp chap refuse
no ppp chap refuse
Syntax Description
This command has no keywords or arguments.
Command Default
CHAP authentication is disabled.
Command Modes
Interface configuration
Command History
ModificationRelease
This command was introduced.Release 3.9.0
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task
IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator
for assistance.
The ppp chap refuse command specifies that CHAP authentication is disabled for all calls, meaning that all
attempts by the peer to force the user to authenticate using CHAP are refused.
If outbound Password Authentication Protocol (PAP) has been configured (using the ppp authentication
command), PAP is suggested as the authentication method in the refusal packet.
Task ID
OperationsTask ID
read, writeppp
read, writeaaa
Examples
The following example shows how to specify POS interface 0/3/0/1 and disable CHAP authentication from
occurring if a peer calls in requesting CHAP authentication. The method of encapsulation on the interface is
PPP.
RP/0/RSP0/CPU0:router# configure
RP/0/RSP0/CPU0:router(config)# interface POS 0/3/0/1
Cisco ASR 9000 Series Aggregation Services Router Interface and Hardware Component Command Reference,
Release 5.3.x
725
PPP Commands onthe Cisco ASR 9000 Series Router
ppp chap refuse
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