CCNA lab 8
Static and default routing
Three routers in a line: add default and static routes so both LANs and the internet loopback can reach each other, in both directions.
About 25 minutes 5 devices 7 tasksIntermediate
Scenario
R1 is a branch router, R2 is the core, and R3 is the edge router that connects to the internet (its Loopback0, 203.0.113.1, stands in for the internet). All interfaces are addressed and up, but no router knows about networks it is not directly connected to. Add routes so that the branch LAN, the server LAN behind R3 and the internet can all reach each other. Remember that every packet needs a route back.
Your tasks
- R1 sends everything it has no specific route for to R2 (default route via 10.0.12.2).
- R2 has a static route to the branch LAN 192.168.1.0/24 via R1.
- R2 sends all other traffic (server LAN and internet) to R3 with a default route.
- R3 can route back to the branch LAN and to the R1–R2 link (10.0.12.0/30).
- PC1 can ping the server SRV1 (192.168.3.10).
- PC1 can ping the internet address 203.0.113.1.
- R1 itself can ping R3's link address 10.0.23.2.
The lab checks the result, not the exact commands. For example, a ping task passes only when the ping really succeeds through the network you built.