Information Technology Reference
In-Depth Information
172.16.0.0/16 is variably subnetted, 2 subnets, 2 masks
S 172.16.0.0/16 is directly connected, Serial0/0/1
C 172.16.4.0/24 is directly connected, FastEthernet0/0
C 192.168.1.0/24 is directly connected, Serial0/0/1
Notice that in the routing table for R3, both the 172.16.4.0/24 subnet route and the
172.16.0.0/16 classful network route are level 2 child routes of the 172.16.0.0/16 parent
route. In this case, R3 uses the 172.16.0.0/16 child route and forwards the return traffic out
Serial 0/0/1 back to R2.
Lab 8-2: show ip route Challenge (8.4.2)
Upon completion of this lab, you will be able to
Determine network topology based on the outputs from the
show ip route
command
■
Cable a network according to the topology diagram in Figure 8-5
■
Determine router interface addressing based on outputs
■
Perform basic configuration tasks on a router
■
Determine level 1 and level 2 routes
■
Scenario
In this lab activity, you will derive the topology of a network from the output of the
show ip route
command.
You must draw a topology diagram and determine the interface addressing on each router.
Then you must build and configure the network based on the
show ip route
output. The DTE and
DCE assignment is at your discretion. When complete, the output from your network must match
those given in Task 1.
Task 1: Examine the Router Outputs
Examine the output from the R1 router.
Step 1.
R1#
show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
<output omitted>
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is 0.0.0.0 to network 0.0.0.0
10.0.0.0/30 is subnetted, 4 subnets
R 10.10.10.0 [120/1] via 10.10.10.6, 00:00:09, Serial0/0/0
C 10.10.10.4 is directly connected, Serial0/0/0
C 10.10.10.8 is directly connected, Serial0/0/1
R 10.10.10.12 [120/1] via 10.10.10.10, 00:00:09, Serial0/0/1
172.16.0.0/16 is variably subnetted, 10 subnets, 5 masks
C 172.16.1.0/27 is directly connected, FastEthernet0/0
R 172.16.1.32/28 [120/2] via 10.10.10.10, 00:00:09, Serial0/0/1
R 172.16.1.192/26 [120/1] via 10.10.10.6, 00:00:09, Serial0/0/0
