Specifications

5-2
Cisco AS5x00 Case Study for Basic IP Modem Services
11/24/1999
Section 5 Configuring PPP and Authentication
Configuring IPCP Options
Step 2
Configure local AAA security in global configuration mode. You must enter the
aaa new-model
command before the other two authentication commands.
!
aaa new-model
aaa authentication login default local
aaa authentication ppp default if-needed local
!
Step 3
Log in with your username and password:
5800-NAS#login
This is a secured device.
Unauthorized use is prohibited by law.
User Access Verification
Username:dude
Password:
5800-NAS#
Warning
Successfully logging in means that your local username will work on any TTY or VTY
line. Do not disconnect your session until you can log in. (If you get locked out, you will
need to perform password recovery by rebooting the device.)
Task 2. Configuring IPCP Options
Create a pool of IP addresses to assign to the PC clients dialing in. As the clients connect, they request
IP addresses from the NAS.
Tech Tip
Remote ISDN LANs and remote nodes are primarily differentiated by an IP addressing
scheme. Remote LANs can appear as remote nodes by using port address translation
(PAT).
Step 1
Define the local IP address pool and DNS servers:
!
ip local pool addr-pool 172.22.90.2 172.22.90.254
!
async-bootp dns-server 172.30.10.1 172.30.10.2
!
For clients using server-assigned addressing (if there are any) you must specify primary and secondary
DNS servers. The clients send config-requests to the NAS if the clients are configured to receive NAS
assigned WINS and DNS servers.
Note
RFC 1877 describes DNS and NBNS servers. The domain name must also be
configured on the client.