Chapter 13 Configuring Dial Backup And Remote Management; Dial Backup Feature Activation Methods - Cisco CISCO851-K9 - 851 Integrated Services Router Configuration Manual

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:
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Remote management functions can be configured as follows:
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The console port and the auxiliary port in the Cisco IOS software configuration are on the same physical
Note
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:
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Dial Backup Feature Activation Methods

Three methods are available to activate the dial backup feature:
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•
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OL-5332-01
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
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
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
Backup Interfaces
Floating Static Routes
Dialer Watch
Cisco 850 Series and Cisco 870 Series Access Routers Software Configuration Guide
C H A P T E R
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