Information Technology Reference
In-Depth Information
Check the PCs.
1.
Are they physically connected to the correct router? (Connection could be through a
switch or directly.)
Yes
Are link lights blinking on all relevant ports?
Yes
Check the PC configurations.
2.
Do they match the topology diagram?
Yes
Check the router interfaces using the
show ip interface brief
command.
3.
Are the interfaces up and up?
Yes
If your answer to all three steps is
yes
, you should be able to successfully ping the default
gateway.
Test connectivity between router R1 and R2.
Step 4.
From router R1, is it possible to ping R2 using the
ping 192.168.2.2
command?
Yes
From router R2, is it possible to ping R1 using the
ping 192.168.2.1
command?
Yes
If the answer is
no
for either of the preceding questions, troubleshoot the configurations to
find the error using the following systematic process:
Check the cabling.
1.
Are the routers physically connected?
Yes
Are link lights blinking on all relevant ports?
Yes
Check the router configurations.
2.
Do they match the topology diagram?
Yes
Did you configure the
clock rate
command on the DCE side of the link?
Yes
Check the router interfaces using the
show ip interface brief
command.
3.
Are the interfaces up and up?
Yes
If your answer to all three steps is
yes
, you should be able to successfully ping from
R2 to R1 and from R2 to R3.
Task 7: Reflection
Attempt to ping from the host connected to R1 to the host connected to R2.
Step 1.
This ping should be unsuccessful.
Attempt to ping from the host connected to R1 to router R2.
Step 2.
This ping should be unsuccessful.
Attempt to ping from the host connected to R2 to router R1.
Step 3.
This ping should be unsuccessful.
What is missing from the network that is preventing communication between these
devices?
After reading the chapter text, the student should be able to state that this network is miss-
ing either static or dynamic routing (or both!).
