Enabling Dial Backup for a Primary Connection

Overview/Description
To configure a backup connection for a primary connection, such as a Frame Relay serial connection, in the event that the primary link goes down or is overused

Target Audience
Network engineers responsible for configuring, implementing, troubleshooting, and managing WAN and remote access solutions; network architects responsible for designing WAN and remote access solutions; CCNP candidates; CCIE candidates

Prerequisites
A knowledge of general networking terms and concepts; experience in general Cisco router operation and configuration, including TCP/IP, routing protocols (RIP, IGRP), routed protocols (IP, IPX), standard and extended access lists, PPP operation and configuration over serial links, Frame Relay operation and configuration on interfaces and subinterfaces, and legacy DDR over ISDN-BRI operation and configuration; a basic knowledge of data networking equivalent to the information in the Cisco Certified Network Associate Basics (CCNAB) v2.0 course and the Interconnecting Cisco Network Devices (ICND) v2.0 course; experience working in a network environment is recommended

Expected Duration
80 Minutes

Objectives:

Enabling Dial Backup for a Primary Connection

  • identify the steps and commands required to configure a backup connection to engage when the primary line fails.
  • identify the steps and commands required to configure a backup connection to engage when the primary line reaches a specified load threshold and when using dialer profiles, and recall the advantages and disadvantages of using physical or dialer interfaces as backup interfaces.
  • identify the bandwidth-utilization issues that affect OSPF, EIGRP, and static routing during load sharing, and configure dialer watch and floating static route as backup connections that activate upon primary line failures.
  • configure dial backup on router interfaces.


    • Course Number: 120792_eng