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Two-site 25 — static routes build
Enterprise Intermediate 4 devices 5 checked tasks 52 points Plan lab
Scenario — Vizag and Imphal are two offices joined by a single leased line. Nothing is configured. The address plan: LANs Vizag 10.44.1.0/24, Imphal 10.44.2.0/24; links Vizag–Imphal 172.24.24.0/30. Give every router interface its address (the router takes .1 of its LAN, the first address of a /30 goes to the lower-numbered router), then make static routes carry the routes. You build it in a browser, type real commands at each device, and every task below is
checked against the running configuration — so you find out it is wrong before anybody else does.
Open this lab in the simulator
The simulator runs in your browser with nothing to install. This lab is part of the full simulator: open it free for 7 days with a new account, then with a plan. It needs an account, which keeps your progress.
The scenario
Vizag and Imphal are two offices joined by a single leased line. Nothing is configured. The address plan: LANs Vizag 10.44.1.0/24, Imphal 10.44.2.0/24; links Vizag–Imphal 172.24.24.0/30. Give every router interface its address (the router takes .1 of its LAN, the first address of a /30 goes to the lower-numbered router), then make static routes carry the routes.
Your role: a network engineer on the enterprise team. Level: Intermediate Done when: all 5 goals show as passed (52 points).
Network status
Devices: 2 routers, 2 PCs, cabled as drawn. No Layer 1 or Layer 2 faults: every link is connected and up. PC-Vizag is a host with 10.44.1.10/24, gateway 10.44.1.1. PC-Imphal is a host with 10.44.2.10/24, gateway 10.44.2.1. R-Vizag, R-Imphal start with an empty configuration. Known problems
None: nothing is misconfigured. The routers are simply not finished: the goals list what has to be built. Goals
Address R-Vizag: g0/0 10.44.1.1/24, g0/1 172.24.24.1/30 (8 pts) Address R-Imphal: g0/0 10.44.2.1/24, g0/1 172.24.24.2/30 (8 pts) R-Vizag: a route — 10.44.2.0/24 via 172.24.24.2 (8 pts) R-Imphal: a route — 10.44.1.0/24 via 172.24.24.1 (8 pts) 10.44.1.10 (Vizag) reaches 10.44.2.10 (Imphal) (20 pts) The activity, in order
Address every interface from the plan: each router task lists its ports and addresses. Why: A router interface routes nothing until it has an address and is up. Every other task builds on this one. Verify with: show ip interface brief On each router write a route for every network it does not touch, using its own neighbour as next hop. Why: A router interface routes nothing until it has an address and is up. Every other task builds on this one. Verify with: show ip interface brief Read the routing table of every router and compare it with the plan. Why: The next hop must be an address on a directly connected subnet, or the route never enters the table. Verify with: show ip route Ping from each LAN to every other LAN, in both directions. Why: The next hop must be an address on a directly connected subnet, or the route never enters the table. Verify with: show ip route Tips
Work in the order given: later goals depend on the earlier ones. After every change, run the verify command before moving on; do not guess. Stuck? Read the verify output first. It names the interface, neighbour or route that is wrong. Common mistake: Adding the route only one way — the ping leaves and never returns Common mistake: Using the far router’s address instead of the directly connected neighbour as next hop Common mistake: Forgetting a transit router in the middle of the chain Why this matters
A router only knows its connected networks. With static routes you write every other network in by hand — one next hop per destination — and the same must be done in the opposite direction or the reply is lost.
What you will be able to do
Work out the next hop toward each remote LAN from a diagram
Write ip route statements with the right prefix, mask and next hop
Explain why every router on the path needs the route
The network
ISR 2911, PC — 4 devices in all, already cabled.
Fa0 Gi0/0 Fa0 Gi0/0 Gi0/1 Gi0/1 R-Vizag PC-Vizag 10.44.1.10/24 · gw 10.44.1.1 R-Imphal PC-Imphal 10.44.2.10/24 · gw 10.44.2.1 Drawn from this lab: devices, cables, ports and the addresses already set. Device Model Address already set
R-Vizag ISR 2911 configure it PC-Vizag PC 10.44.1.10 / 255.255.255.0 gw 10.44.1.1 R-Imphal ISR 2911 configure it PC-Imphal PC 10.44.2.10 / 255.255.255.0 gw 10.44.2.1
Cabling
PC-Vizag Fa0 ↔ R-Vizag Gi0/0 PC-Imphal Fa0 ↔ R-Imphal Gi0/0 R-Vizag Gi0/1 ↔ R-Imphal Gi0/1
What is configured at the start
Nothing is configured to start with beyond the addresses above: you build the configuration from a clean start.
Tasks, and how each one is checked
Every task is decided by reading the live network — a neighbour in FULL, a ping that succeeds, a line in the running configuration — not by looking for a keyword you typed. The same command shows you what the lab sees.
# Task Pts How to verify it yourself
1 Address R-Vizag: g0/0 10.44.1.1/24, g0/1 172.24.24.1/30 8 On R-Vizag: show ip interface brief — Gi0/0 has 10.44.1.1 and is up/up. and On R-Vizag: show ip interface brief — Gi0/1 has 172.24.24.1 and is up/up. 2 Address R-Imphal: g0/0 10.44.2.1/24, g0/1 172.24.24.2/30 8 On R-Imphal: show ip interface brief — Gi0/0 has 10.44.2.1 and is up/up. and On R-Imphal: show ip interface brief — Gi0/1 has 172.24.24.2 and is up/up. 3 R-Vizag: a route — 10.44.2.0/24 via 172.24.24.2 8 On R-Vizag: show ip route 10.44.2.0 shows next hop 172.24.24.2. 4 R-Imphal: a route — 10.44.1.0/24 via 172.24.24.1 8 On R-Imphal: show ip route 10.44.1.0 shows next hop 172.24.24.1. 5 10.44.1.10 (Vizag) reaches 10.44.2.10 (Imphal) 20 On PC-Vizag: ping 10.44.2.10 must succeed.
Stuck? Ask the coach
Tell the coach what you see or what you tried. It gives you a hint, not the answer, the way a senior engineer would. Included with a free trial or any plan.
Ask the coach
Common mistakes
Adding the route only one way — the ping leaves and never returns
Using the far router’s address instead of the directly connected neighbour as next hop
Forgetting a transit router in the middle of the chain
Reference solution
Try it yourself first — the lab checks your work either way. This is one configuration that makes every task pass, device by device:
R-Vizag interface g0/0
ip address 10.44.1.1 255.255.255.0
no shutdown
exit
interface g0/1
ip address 172.24.24.1 255.255.255.252
no shutdown
exit
ip route 10.44.2.0 255.255.255.0 172.24.24.2 R-Imphal interface g0/0
ip address 10.44.2.1 255.255.255.0
no shutdown
exit
interface g0/1
ip address 172.24.24.2 255.255.255.252
no shutdown
exit
ip route 10.44.1.0 255.255.255.0 172.24.24.1 Where this is examined
CCNA 3.0 static routing; Network+ 2.1 routing technologies.
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