Two routers over an OSPF area 0 link, built so that show ip route on R1 shows every route code the CCNA cares about in one table: connected (C), local (L), OSPF (O), static (S), and the default route (S*). Companion lab for:

• How to Read the Cisco IP Routing Table (show ip route)

 [ R1 ]---- Gi0/0 -- 10.0.12.0/30 -- Gi0/0 ----[ R2 ]
  Lo0 1.1.1.1/32        OSPF area 0       Lo0 2.2.2.2/32
  Lo1 172.16.1.0/24                       Lo1 192.168.20.0/24
  + static 203.0.113.0/24 via 10.0.12.2
  + default 0.0.0.0/0 via 10.0.12.2

Paste each file at the privileged-EXEC prompt of the matching router, in GNS3, Cisco Packet Tracer, or on real gear:

• configs/R1-config.txt -> R1 (OSPF + a static + a default route)
• configs/R2-config.txt -> R2 (advertises its loopbacks into OSPF)

There is no .pkt file: Packet Tracer's format cannot be generated outside the app. Build the two routers, connect Gi0/0 to Gi0/0, then paste.

R1# show ip route               ! C, L, O [110/x], S [1/0], and S* default
R1# show ip route 192.168.20.0  ! the full record: source, distance, metric
R1# show ip ospf neighbor       ! 2.2.2.2 in FULL state

The bracket on each learned route is [administrative distance / metric]. The loopbacks use ip ospf network point-to-point so OSPF advertises their real mask (a /24) instead of the default /32 host route.