Configuring Ppp With A Dialed Backup Line; Configuring A Synchronous Serial Interface - Enterasys Security Router X-PeditionTM User Manual

Configuring PPP with a Dialed Backup Line

Configuring PPP with a Dialed Backup Line
You can configure PPP on the following types of physical interfaces:
• Asynchronous serial
• Synchronous serial
• T1/E1
By enabling PPP encapsulation on physical interfaces, PPP can also be used on calls placed by the
dialer interfaces that use the physical interfaces. Refer to
configured with one backup dial line to two different sites.

Configuring a Synchronous Serial Interface

Perform the following steps to configure a synchronous V.35 serial interface to communicate with
PPP:
1. Enter interface serial <card/port> to specify the interface.
XSR(config)#interface serial 1/0
2. Enter the media-type for the interface (default: RS232).
XSR(config-if<S1/0>)#media-type v35
3. Enter encapsulation ppp to enable PPP encapsulation.
XSR(config-if<S1/0>)#encapsulation ppp
4. Set the local IP address of this interface.
XSR(config-if<S1/0>)#ip address 192.168.1.1 255.255.255.0
8-10 Configuring PPP
Figure 8-6 XSR Configuration with One Backup Dial Line to Different Sites
Backup link
PSTN
Primary link
XSR
Serial interface 1/1
Primary link
Serial interface 1/0
Figure 8-6 for an example of an XSR
Site B
Central Site