CCNA 3 Labs and Study Guide - BINARYBB.INFO – @jagalbraith

76 Switching Basics and Intermediate Routing CCNA 3 Labs and Study Guide
Task 4: Add ISP Router
Step 1. If you are not simulating the ISP router, configure ISP with the following script:
Router(config)#hostname ISP
ISP(config)#enable secret class
ISP(config)#no ip domain-lookup
ISP(config)#ip host RTA 209.165.201.1
ISP(config)#interface Loopback0
ISP(config-if)#description Public Web Server
ISP(config-if)#ip address 209.165.202.129 255.255.255.255
ISP(config-if)#interface Serial0
ISP(config-if)#description Link to RTA
ISP(config-if)#ip address 209.165.201.1 255.255.255.252
ISP(config-if)#clockrate 64000
ISP(config-if)#no shutdown
ISP(config-if)#exit
ISP(config)#banner motd &
***********************************
!!!AUTHORIZED ACCESS ONLY!!!
***********************************
&
ISP(config)#line con 0
ISP(config-line)#exec-timeout 30 0
ISP(config-line)#password cisco
ISP(config-line)#logging synchronous
ISP(config-line)#login
ISP(config-line)#line aux 0
ISP(config-line)#exec-timeout 30 0
ISP(config-line)#password cisco
ISP(config-line)#logging synchronous
ISP(config-line)#login
ISP(config-line)#line vty 0 4
ISP(config-line)#exec-timeout 30 0
ISP(config-line)#password cisco
ISP(config-line)#logging synchronous
ISP(config-line)#login
ISP(config-line)#end
ISP#copy run start
Step 2. Verify that ISP can now ping the 209.165.201.2 interface on RTA.
ISP#ping RTA
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 209.165.201.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/29/32 ms
RTA will not be able to ping the Public Web Server and ISP will not be able to ping beyond the
209.165.201.2 interface of RTA. Why?
The routing table on ISP shows only two directly connected networks. ISP can ping RTA
directly because ISP has a route to the 209.165.201.0/30 network in its routing table. RTA can
reply for the same reason. But RTA does not have a route to host 209.165.202.129/32, nor does