CSCO 220 Modules 1 & 2 Lab Packet-OSPF with Questions
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Dec 6, 2023
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Uploaded by DCOLEMAN2000
Module 1: Single-Area OSPF Concepts
Module 2: Single-Area OSPF Configuration
For some of this packet you will need to have access to your account on the
Netacad website
.
Grading Rubric
Your Score
Packet complete, answers correct, submitted on-time.
4
Packet complete, answers mostly correct, submitted
on-time.
3
Packet mostly complete, answers mostly correct,
submitted on-time.
2
Packet mostly complete, answers mostly correct,
submitted late.
1
For the Packet Tracer exercises located below, go to the Netacad link, click on it and go
to the module this lab packet applies to. Click on the section where the Packet Tracer
activity is located, download the Packet Tracer activity and follow the instructions
included with the Packet Tracer activity
Perform any Netlab assignments listed below, be sure to post your answers in RED
Follow along in the PT assignments and post your answers to the questions in RED
Post a Packet Tracer screen shot ONLY of the name of the lab and the completion
score (not the network or anything else unless requested). Make the screenshot the
size of the page so I can easily read it using my grading software
Packet Tracer 2.2.13-Point-to Point Single-Area OSPFv2 Configuration. Post a screenshot of
the completion screen below, make it the width of the page and answer the questions in
RED.
How many statements are required to configure OSPF to route all the networks attached to router R1?
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CSCO 220
Three
The LAN attached to router R1 has a /24 mask. What is the equivalent of this mask in dotted decimal
representation?
255.255.255.0
Subtract the dotted decimal subnet mask from 255.255.255.255. What is the result?
0.0.0.255
What is the dotted decimal equivalent of the /30 subnet mask?
255.255.255.252
Subtract the dotted decimal representation of the /30 mask from 255.255.255.255. What is the result?
0.0.0.3
Which interfaces on R3 should be configured with OSPF?
G0/0/0, S0/1/0, and S0/1/1
Which interfaces on R1, R2, and R3 are a LAN interfaces?
G0/0/0 on all three routers
Use
show
commands to verify the network and passive interface configuration of the OSPF process on each
router (post output):
Packet Tracer 2.3.11-Determine the BR and BDR. Post a screenshot of the completion screen
below, make it the width of the page. Answer the questions in
RED.
Which router is the DR?
RC
Which router is the BDR?
RB
What is the OSPF state of router RA?
DROTHER
According to the debug output, which router was elected DR and which router was elected BDR?
RB is now DR and RA is now BDR.
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Did DR and BDR roles change? Explain.
No, because OSPF does not update the DR/BDR when the existing ones are active.
According to the debug output on
RA
, which router was elected DR and which router was elected BDR?
RC is now BDR and RA is now DR. RA was the BDR, when the DR failed (RB) it became the DR.
Wait for the new DR/BDR elections to occur. Did DR and BDR roles change? Explain
No, roles did not change because the current DR and BDR are still active. A router that comes online with a higher
router ID will not assume the BDR role until the BDR fails.
What is the status of router RC now?
BDR
According to output from the
show ip ospf neighbor
command on the routers, which router is now DR and which
router is now BDR?
RA is now DR and RB is now BDR.
Packet Tracer 2.4.11-Modify Single-Area OSPFv2. Post a screenshot of the completion screen
below, make it the width of the page.
Packet Tracer 2.5.3-Propigate a Default Route in OSPFv2 Post a screenshot of the completion
screen below, make it the width of the page and answer the questions in
RED.
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