Chapter 1 Basic Router Configuration

Configuring Basic Parameters

Verifying Your Configuration

To verify that you have properly configured the loopback interface, enter the show interface loopback command. You should see verification output similar to the following example.

Router# show interface loopback 0 Loopback0 is up, line protocol is up

Hardware is Loopback

Internet address is 200.200.100.1/24

MTU 1514 bytes, BW 8000000 Kbit, DLY 5000 usec, reliability 255/255, txload 1/255, rxload 1/255

Encapsulation LOOPBACK, loopback not set

Last input never, output never, output hang never Last clearing of "show interface" counters never Queueing strategy: fifo

Output queue 0/0, 0 drops; input queue 0/75, 0 drops 5 minute input rate 0 bits/sec, 0 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

0 packets input, 0 bytes, 0 no buffer

Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 0 packets output, 0 bytes, 0 underruns

0 output errors, 0 collisions, 0 interface resets

0 output buffer failures, 0 output buffers swapped out

Another way to verify the loopback interface is to ping it:

Router# ping 200.200.100.1 Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 200.200.100.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms

Configuring Command-Line Access to the Router

Perform these steps to configure parameters to control access to the router, beginning in global configuration mode:

 

Command

Purpose

Step 1

 

 

line [aux console tty vty] line-number

Enters line configuration mode, and specifies the

 

 

type of line.

 

Example:

This example specifies a console terminal for

 

 

 

Router(config)# line console 0

access.

 

Router(config)#

 

Step 2

 

 

password password

Specifies a unique password for the console

 

 

terminal line.

 

Example:

 

 

Router(config)# password 5dr4Hepw3

 

 

Router(config)#

 

 

 

 

Cisco 1800 Series Integrated Services Routers (Fixed) Software Configuration Guide

1-10

OL-6426-02

 

 

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Cisco Systems OL-6426-02 Configuring Command-Line Access to the Router, Verifying Your Configuration, Password password