Specifications

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Cisco 1700 Series Router Software Configuration Guide
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Chapter 7 Configuring Frame Relay
ISDN as the Backup WAN Connection
In addition to the assumptions listed in the “Before You Begin” section of this
chapter, the configuration is based on the following assumptions:
• Frame Relay is used as the primary WAN connection to the central site.
• The ISDN line is used as the secondary WAN connection to the central site.
These are the major tasks in configuring your router:
• Configuring Global Parameters
• Configuring Security
• Configuring the Fast Ethernet Interface
• Configuring the Frame Relay Interface
• Configuring the ISDN Interface
• Configuring Protocols and Dialing Behavior
• Configuring Command-Line Access to the Router
Figure 7-3 shows the configuration example used in this section.
Figure 7-3 Configuration Example—ISDN as Backup Connection
Frame Relay
ISDN
S6685
Remote site
Central site
Ethernet interface
IP address: 172.16.25.42
ISDN interface:
IP unnumbered
Network addresses:
IP: 172.16.25.0
IPX: ABC
ISDN interface
IP address:
192.168.41.41
Username: HQ
Phone: [phone]
PPP password: guessme
1700
Router
IPX network: 9876
IPX network: 1234