Nortel Networks 8000 - Manual (Page 176)

6 PPP and MP configuration
Nortel Secure Router 8000 Series
Configuration -WAN Access
6.12.2 Example for configuring unidirectional CHAP
authentication
Networking requirements
As shown in, configure Router A with a user name when you to authenticate Router B in
CHAP mode.
Configuration roadmap
The configuration roadmap is as follows:
1. Add the user name and password of Router B to the local user list of Router A.
2. Configure the local user name for Router A.
3. Configure Router A to authenticate the peer in CHAP mode.
4. Configure the local user list on Router B.
5. Configure the local user name for Router B.
Data preparation
To complete the configuration, you need the following data:
# The local user name of Router A is rta
# The local user name and password of Router B are respectively rtb and hello
# The IP address of the interface on Router A is 10.110.0.1/24
# The IP address of the interface on Router B is 10.110.0.2/24
Configuration procedure
Step 1 Configure Router A.
# Add the username and password of Router B to the local user list of Router A.
system-view
[RouterA] aaa
[RouterA-aaa] local-user rtb password simple hello
[RouterA-aaa] quit
# Configure an IP address for POS 1/0/0 and configure the link-layer encapsulation protocol
as PPP.
[RouterA] interface pos 1/0/0
[RouterA-Pos1/0/0] ip address 10.110.0.1 255.255.255.0
[RouterA-Posl/0/0] link-protocol ppp
# Configure the local to authenticate the peer in CHAP mode.
[RouterA-Posl/0/0] ppp authentication-mode chap
# Configure the local username of RouterA
[RouterA-Posl/0/0] ppp chap user rta
# Restart the interface.
6-50 Nortel Networks Inc. Issue 5.3 (30 March 2009)