Cisco CISCO876-SEC-I-K9 Configuration Guide - Page 119

13 C H A P T E R Configuring Dial Backup and Remote Management The Cisco 800 series access routers support dial-in (for remote management) and dial-out (for dial backup) capabilities. By allowing you to configure a backup modem line connection, the Cisco 800 series access routers provide protection against WAN downtime. Dial backup is inactive by default, and must be configured to be active. Dial backup functions can be configured as follows: • Through the auxiliary port on any Cisco 870 series router • Through the ISDN S/T port on a Cisco 876 with an advanced enterprise (c870-adventerprisek9-mz) image Remote management functions can be configured as follows: • Through the auxiliary port on any Cisco 850 or Cisco 870 series router • Through the ISDN S/T port on the Cisco 876 and Cisco 878 routers Note The console port and the auxiliary port in the Cisco IOS software configuration are on the same physical RJ-45 port; therefore, both ports cannot be activated simultaneously, and the command-line interface (CLI) must be used to enable the desired function. This chapter contains the following topics: • Dial Backup Feature Activation Methods • Dial Backup Feature Limitations • Configuring Dial Backup and Remote Management Through the Console or Auxiliary Port • Configuring Dial Backup and Remote Management Through the ISDN S/T Port Dial Backup Feature Activation Methods Three methods are available to activate the dial backup feature: • Backup Interfaces • Floating Static Routes • Dialer Watch OL-5332-01 Cisco 850 Series and Cisco 870 Series Access Routers Software Configuration Guide 13-1