Download - Chap 6 Router Configuration I
Chap 6Router Configuration I
Andres, Wen-Yuan Liao
Department of Computer Science and Engineering
De Lin Institute of Technology
http://www.cse.dlit.edu.tw/~andres
Overview
Use router modes and configuration methods to update a router's configuration file with current and prior versions
Router Configuration Files
Configuration file information
11.x configuration files
11.0 configuration files
copy running-config tftp and copy tftp running-config
Use NVRAM with Release 11.x
Use NVRAM with Pre-11.0
Router conf. file information
Conf. files can come from the console, NVRAM, or TFTP server
The conf. file contains commands to customize router operation
11.x configuration files
Use the privileged EXEC configure command to configureFrom a virtual (remote) terminal, a modem connection, or a console terminal
Load a conf. from a TFTP server
Using TFTP ServerThe network configuration file: apply to all routers and terminal servers on the network
The host configuration file: apply to one router
Router Configuration Modes
Using router conf. modes
Global configuration modes
Configuring routing protocols
Interface confi. commands
Configuring a specific interface
Use router conf. modes
User modeSubset of the EXEC commands
Privileged mode Global configuration mode and specific configuration modes
Use router conf. modes
If you type exit, the router will back out one levelCtrl-Z leaves conf. mode completely and returns the router to privileged EXEC mode
Configure a specific interface
On serial linksOne side(DCE)
Provide a clocking signalThe other side (DTE) By default, Cisco routers are DTE devices, but they can be used as DCE devices
Configure a specific interface
If you are using an interface to provide clocking, you must specify a rate with the clockrate command
The bandwidth command overrides the default bandwidth
Two connections on Ethernet interfaces:an attachment unit interface (AUI) connector
a 10BASE-T connector
Configuration Methods
11.x configuration methods
11.0 configuration methods
Password conf. methods
Router identification conf.
Password configuration methods
Password can be established both on individual lines and in the privileged EXEC mode
line console 0 -- the console terminal line vty 0 4 -- Telnet sessions
enable password -- restricts access to privileged EXEC mode
enable secret password -- uses a Cisco proprietary encryption process to alter the password character string
Password configuration methods
service password-encryptionFurther protect passwords from being displayed
This encryption algorithm does not match the Data Encryption Standard (DES)
Password configuration methods
Router identification conf.
Name your routerThe host name and is the name
displayed by the system prompt
banner motdA message-of-the-day banner to
be displayed on all connected terminals