Routing Lab

lab completed in class 9/22

Part 1

Build the network and configure routing

• Built network in Packet Tracer using Router-PT-Empty
  • Added three PT-ROUTER-NM-1CFE modules to the router (powered off router, dragged modules into the three rightmost empty slots, powered back on) to get three FastEthernet interfaces: 0/0, 1/0, 2/0
• Configured router interface IPs across three subnets:
  • FastEthernet0/0: 192.168.1.1
  • FastEthernet1/0: 192.168.2.1
  • FastEthernet2/0: 192.168.3.1
• Set workstation IPs to match their LAN's default gateway network (TODO: add link to tech journal notes with the exact step-by-step for this)
• Saved router config (Config tab → Save NVRAM), then power-cycled the router (Physical tab → power off/on) and used Fast Forward to restore links
  • Confirmed interface IPs persisted after restart via show ip interface brief
• Pinged from HELLO! PC to Ping Me PC — 4/4 packets received, 0% loss

Part 2

Routing table analysis

• Ran show ip route on the router — shows all three networks as directly connected (C):
  • 192.168.1.0/24 — FastEthernet0/0
  • 192.168.2.0/24 — FastEthernet1/0
  • 192.168.3.0/24 — FastEthernet2/0
• Ran netstat -r on HELLO! and Ping Me PCs to compare against the router's table

Questions to consider

Q: What is the difference between the router and PC routing tables, if there is any at all?
A: Router tables include more details and include all three networks. PC routing tables usually just have the local LAN and default gateway, which isn't sufficient information when there are 3 networks involved.