Configuration Example For Circular Dial String Backup And Internet Access - HP MSR Router Series Wan Access Configuration Manual

5. Select the Accept incoming connections option, and click Next to set the devices for incoming
connections. Click Next.
The Incoming Virtual Private Network (VPN) Connection window appears.
6. Select the Allow virtual private connections option if the server is connected to the Internet to
provide Internet access requests for the client. Otherwise, select the Do not allow virtual private
connections. Then click Next.
The User Permissions window appears. Set the usernames and passwords for the clients allowed
to call back.
7. Click Add. In the New User dialog box that appears, add the username and password for the PPP
callback client and click OK.
An icon for the new user account appears in the box in the User Permissions window.
8. Select the new user and click Properties.
The properties setting dialog appears.
9. On the Callback tab, perform one of the following tasks:
Select the Do not allow callback option.
After the PPP authentication is passed in a call, this option prevents the callback server from
disconnecting the current connection and calling back. Instead, the server will maintain the
current connection and allow the client to access the LAN or the Internet.
Select the Allow the caller to set the callback number option.
After the PPP authentication is passed in a call, the server will disconnect and then call back the
client at the number configured in the ppp callback ntstring dial-number command. This option
is the same as the last option except that the charges are paid by the server end instead of the
client end.
Select the Always use the following callback number option to set a callback number.
10. Click Next.
The Networking Software window appears.
11. Set the networking components, and use the default settings for the network protocols. Click Next.
12. Assign a name to your connection.
13. Click Finish to complete the creation.
Configuration example for circular dial string backup and
Internet access
Network requirements
As shown in
Router B operates as an access server and is configured with an IP address of 100.1.1.254/24. It
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uses the address range of 100.1.1.1/24 to 100.1.1.16/24 for address assignment. The PSTN dial
strings available on it are 8810048 through 8810055, allowing the router to provide services to 16
online users.
Router A accepts the IP address assigned by Router B.
•
Configure Router A on the dialup side to implement cyclic dial string backup with dialer routes. Configure
Router B on the access side to use asynchronous serial interfaces to provide DDR dialup access and
adopt PAP to authenticate the dialup side.
Figure 66:
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