Tugas Packet Tracer - Configuring IPv4 Static and Default Routes
Objectives
Part 1: Examine the Network and
Evaluate the Need for Static Routing
Part 2: Configure Static and Default
Routes
Part 3: Verify Connectivity
Background
In this activity, you will configure
static and default routes. A static route is a route that is entered manually
by the network administrator to create a reliable and safe route. There are
four different static routes that are used in this activity: a recursive static
route, a directly attached static route, a fully specified static route, and a
default route.
Part 1: Examine the Network and Evaluate the Need for Static Routing
a.
Looking at the topology diagram,
how many networks are there in total? _5__________
b.
How many networks are directly
connected to R1, R2, and R3? __R1 has 2, R2 has 3, and
R3 has 2._______________________________
c.
How many static routes are
required by each router to reach networks that are not directly connected?
R1 needs 3 static routes, R2 needs 2 static routes, and R3
needs 3 static routes.____________________________________________________________________________________
d.
Test connectivity to the R2 and
R3 LANs by pinging PC2 and PC3 from PC1.
Why were you unsuccessful? Because there are no
routes to these networks on R1.________________________________________________________
Part 2: Configure Static and Default Routes
Step 1:
Configure recursive static routes
on R1.
a.
What is recursive static route?
A recursive static route relies on the next hop router in
order for packets to be sent to its destination. A recursive static route
requires two routing table lookups.____________________________________________________________________________________
____________________________________________________________________________________
b.
Why does a recursive static
route require two routing table lookups?
It must
first look in the routing table for the destination network and then look up
the exit interface/direction of the network for the next hop router.
____________________________________________________________________________________
____________________________________________________________________________________
c. Configure a recursive static route to every network not directly
connected to R1, including the WAN link between R2 and R3.
ip route
172.31.0.0 255.255.255.0 172.31.1.193
ip route
172.31.1.196 255.255.255.252 172.31.1.193
ip route
172.31.1.128 255.255.255.192 172.31.1.193
d.
Test connectivity to the R2 LAN
and ping the IP addresses of PC2 and PC3.
Why were you unsuccessful?
_R1
has a route to the R2 and R3 LANs, but R2 and R3 do not have a routes to R1.___________________________________________________________________________________
Step 2:
Configure directly attached
static routes on R2.
a.
How does a directly attached static
route differ from a recursive static route?
A directly
attached static route relies on its exit interface in order for packets to be
sent to its destination, while a recursive static route uses the IP address of
the next hop router.
____________________________________________________________________________________
____________________________________________________________________________________
b.
Configure a directly attached
static route from R2 to every network not directly connected.
ip route
172.31.1.0 255.255.255.128 Serial0/0/0
ip route
172.31.1.128 255.255.255.192 Serial0/0/1
c.
Which command only displays
directly connected networks? Show ip route connected___________________________________
d.
Which command only displays the
static routes listed in the routing table? Show ip
route static______________________
e.
When viewing the entire routing
table, how can you distinguish between a directly attached static route and a
directly connected network?
_ The
static route has an S and a directly connected network has a C_______________________________________________________________________________
Step 3:
Configure a default route on R3.
a.
How does a default route
differ from a regular static route?
A default route, also
known as the gateway of last resort, is the network route used by a router when
no other known route exists for a destination network. A static route is used
to route traffic to a specific network.____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
b.
Configure a default route on R3 so that
every network not directly connected is reachable.
ip route 0.0.0.0 0.0.0.0 Serial0/0/1
c.
How is a static route displayed in the
routing table? S* 0.0.0.0/0__________________
Step 4:
Document the commands for fully
specified routes.
Note: Packet Tracer does not currently support configuring fully
specified static routes. Therefore, in this step, document the configuration
for fully specified routes.
a.
Explain a fully
specified route.
____________________________________________________________________________________
____________________________________________________________________________________
b.
Which command provides a fully
specified static route from R3 to the R2 LAN?
_R3(config)#
ip route 172.31.0.0 255.255.255.0 s0/0/1 172.31.1.197___________________________________________________________________________________
c.
Write a fully specified route
from R3 to the network between R2 and R1. Do not configure the route; just
calculate it.
R3(config)# ip route 172.31.1.192
255.255.255.252 s0/0/1 172.31.1.197____________________________________________________________________________________
d.
Write a fully specified static
route from R3 to the R1 LAN. Do not configure the route; just calculate it.
R3(config)# ip route 172.31.1.0
255.255.255.128 s0/0/1 172.31.1.197____________________________________________________________________________________
Step 5:
Verify static route configurations.
Use the appropriate show commands to verify correct configurations.
Which show commands can you use to verify that the static routes are
configured correctly?
show
ip route, show ip route static, and the show ip route [network] commandsi____________________________________________________________________________________
Part 3: Verify Connectivity
Every device should now be able to ping
every other device. If not, review your static and default route
configurations.
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