Static Routing - Routing Protocols and Concepts - page 123

Task 8: Configure Static Routing on HQ

Consider the type of static routing that is needed on HQ.

Step 1.

What networks are present in the HQ routing table? List the networks with slash notation.

192.168.2.128/26

192.168.2.64/26

209.165.201.0/30

What networks are missing from the HQ routing table? List the networks with slash nota-
tion.

192.168.2.192/26

209.165.200.224/27

Can one summary route that includes all the missing networks be created? no

HQ is in a unique position as the hub router in this hub-and-spoke topology. Traffic from
the BRANCH LAN destined for the Internet must pass through HQ. HQ must be able to
send any traffic for which it does not have a router to ISP. What kind of route would you
need to configure on HQ to solve this problem?

A default static route pointing to ISP

HQ is also the intermediary for any traffic from the Internet destined for the BRANCH
LAN. Therefore, HQ must be able to route to that LAN. What kind of route would you
need to configure on HQ to solve this problem?

A static route pointing to the BRANCH LAN

Configure HQ with a static route.

Step 2.

Configure HQ with a static route to the BRANCH LAN using the Serial 0/0/0 interface of
HQ as the exit interface. Record the command that you used.

HQ(config)# ip route 192.168.2.192 255.255.255.192 serial 0/0/0

Configure HQ with a default static route. Step 3.

Configure the HQ router with a default static route pointing to ISP using the next-hop IP
address. Record the command you used.

HQ(config)# ip route 0.0.0.0 0.0.0.0 209.165.201.1

View the routing table of HQ to verify the new static route entries. Step 4.

Without testing it first, do you think that PC1 can now successfully ping PC2? yes

Why or why not?

PC1 can now successfully ping PC2. HQ now has a route back to the BRANCH LAN.

Without testing it first, do you think that PC1 or PC2 can now successfully ping the web
server? no

Why or why not?

PC1 and PC2 cannot successfully ping the web server. Although the web server will
receive the ping packets from PC1 and PC2 (HQ is sending default traffic to ISP), ISP
does not yet know how to route packets back to HQ or BRANCH networks.