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CHAPTER
8-1
Cisco 819 Series Integrated Services Routers Software Configuration Guide
OL-23590-02
8
Configuring the Serial Interface
This chapter describes configuring serial interface management in the following sections:
• Legacy Protocol Transport, page 8-2
• Configuring Serial Interfaces, page 8-2
• Information About Configuring Serial Interfaces, page 8-3
• How to Configure Serial Interfaces, page 8-6
• Configuration Examples, page 8-19
The Cisco 819 Integrated Services Router (ISR) supports synchronous by default and asynchronous
serial interface protocols.
Configuring the serial interface in the Cisco 819 ISR allows you to enable applications such as WAN
access, legacy protocol transport, console server, and dial access server. It also allows remote network
management, external dial-modem access, low-density WAN aggregation, legacy protocol transport, and
high port-density support.
Serial interfaces enables the following features:
• WAN access and aggregation
• Legacy protocol transport
• Dial access server
Serial interfaces can be used to provide WAN access for remote sites. With support for serial speeds up
to 8 Mbps, it is ideal for low- and medium-density WAN aggregation.
Figure 8-1 WAN Concentration