From: Tan Chai Heng (tanch@kuala-lumpur.sns.slb.com)
Date: Thu Oct 09 2003 - 23:42:36 GMT-3
Hi,
I am trying to understand of the use of loopback interface in the config
below. There's an ip to name mapping using the loopback interface. How can
this work (well it does I just need to understand why and how!) :-) Also,
when is it necessary to use "ip routing"?
Thanks in advance!
aaa---------bbb
| |_____ ccc
|_______ddd
bbb,ccc and ddd is connected to aaa async-ly
hostname aaa
service password-encryption
enable password sitamoht
username michel password sitamoht
ip host bbb 2002 1.1.1.1
ip host ccc 2003 2.2.2.2
ip host ddd 2004 3.3.3.3
ip routing
ip subnet-zero
interface ethernet 0
ip address 172.16.80.1 255.255.240.0
no shutdown
interface loopback 0
ip address 1.1.1.1 255.255.255.255
no shutdown
interface loopback 1
ip address 2.2.2.2 255.255.255.255
no shutdown
interface loopback 2
ip address 3.3.3.3 255.255.255.255
no shutdown
line 2 4
transport input all
flowcontrol hardware
speed 9600
login local
databits 8
modem inout
line con 0
login local
line aux 0
line vty 0 4
login local
Tan Chai Heng
Schlumberger NIS
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