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Computer Network

You will implement and test this network using Cisco Packet Tracer software Connect all cables in Packet Tracer. Be sure to use the correct cable types for each physical link according to this table “ST” = “Straight Through”

INSTRUCTIONS TO CANDIDATES
ANSWER ALL QUESTIONS

ASSIGNMENT DOCUMENT

You will implement and test this network using Cisco Packet Tracer software, starting with file “TDC372-Lab1.pkt”. Follow the Network Implementation and Testing instructions below, then fill in Lab #1 Answers document by answering questions and pasting screenshots into the Answers Document when directed to do so.

BIG-ISP is an Internet Service Provider with ISP routers in 4 cities: San Francisco (SF), Los Angeles (LA), Chicago (CHI) and Texas (TX). Their 4 ISP routers have Gigabit fiber optic links between them, except for the SF-to-CHI link, which is a 4 Mbps serial link. They have a customer in San Francisco with Home network connected to BIG-ISP through a Digital Subscriber Line (DSL) connection. There is a server in Chicago with Gigabit-speed connection to the BIG-ISP network

 

 

Lab #1 Network Diagram

The ISP routers (SF, CHI, LA, TX) are Cisco 2811 routers with interface cards installed for gigabit fiber. The Home Router contains an integrated switch, where interfaces Fa0/0 and Fa0/1 are routed (L3) interfaces, while interfaces Fa0/1/0, Fa0/1/1, Fa0/1/2 and Fa0/1/3 are switched (L2) interfaces.

 

Network Implementation and Testing

  1. Connect all cables in Packet Tracer. Be sure to use the correct cable types for each physical link according to this table (“ST” = “Straight Through”):

 

Lab #1 Physical Links

Device

Interface

Cable Type

Device

Interface

SF Host

Fa0

Copper ST

Home Rtr

Fa0/1/0

Home Rtr

Fa0/0

Copper ST

DSL Modem

Port 1

DSL Modem

Port 0

Phone Cable

DSLAM

Modem4

DSLAM

Eth6

Copper ST

SF

Fa0/0

SF

Gi0/2/0

Fiber optic

LA

Gi0/2/0

SF

Se0/1/0

Serial Cable

CHI (DCE)

Se0/1/0

LA

Gi0/3/0

Fiber optic

TX

Gi0/2/0

TX

Gi0/3/0

Fiber optic

CHI

Gi0/3/0

CHI

Gi0/2/0

Fiber optic

CHI Switch

Gi9/1

CHI Switch

Gi8/1

Copper ST

Chi Server

Gig1

  1. Set hostname on each router and switch to the device name followed by your initials (like “SF-GB”).

  2. Set the Home Router Fa0/1/0 switch port to not participate in spanning tree protocol by configuring switchport mode access and spanning-tree portfast.

  3. Set IP addresses on all L3 interfaces according to this table:

 

Lab #1 Interface IPs

Device

Interface

IP Address

Prefix Length

SF Host

Fa0

44.1.1.10

/24

Home Rtr

Vlan1

44.1.1.1

/24

Home Rtr

Fa0/0

69.12.55.18

/30

SF

Fa0/0

69.12.55.17

/30

SF

Gi0/2/0

100.23.1.1

/30

SF

Se0/1/0

100.23.1.13

/30

LA

Gi0/2/0

100.23.1.2

/30

LA

Gi0/3/0

100.23.1.5

/30

TX

Gi0/2/0

100.23.1.6

/30

TX

Gi0/3/0

100.23.1.10

/30

CHI

Se0/1/0

100.23.1.14

/30

CHI

Gi0/2/0

77.3.1.1

/24

 

CHI

Gi0/3/0

100.23.1.9

/30

Chi Server

Gig1

77.3.1.10

/24

  1. Execute “show ip interface brief” on each router to make sure that all interfaces have correct IP and mask assigned and are Up/Up.

  2. Be sure to configure clock rate on CHI Se0/1/0 (clock rate 4000000)

  3. Set Interface Bandwidth to 4 Mbps on CHI Se0/1/0 and SF Se0/1/0 by executing bandwidth 4000 on each of these

  4. Set layer 2 protocol (encapsulation) to Point-to-Point Protocol (ppp) for CHI Se0/1/0 and SF Se0/1/0

  5. Make sure you can successfully ping from each router to each of its 1-hop neighbor routers.

  6. Execute a “show ip route” on each router and make sure that each of its directly connected subnets is shown in the routing

  1. Set IP address, subnet mask and default gateway IP on SF Host and Chicago Server. Make sure you can successfully ping from each host to its default gateway.

  2. Start up OSPF on each of the 4 ISP Routers, with the following router-ids. DO NOT run OSPF on Home

 

Lab #1 OSPF Router IDs

Router

Router ID

SF

1.1.1.1

LA

2.2.2.2

CHI

3.3.3.3

TX

4.4.4.4

  1. Activate OSPF on all interfaces that have IP addresses on all 4 routers

  2. Set SF Fa0/0 and CHI Gi0/2/0 as passive

  3. Do a show ip protocol on each ISP router – make sure that all 4 interface router-ids show up

  4. Add a default static route on Home Router so that it will deliver all packets Do not use any dynamic routing protocol on Home Router.

  5. Add a static route to 1.1.0/24 on SF router.

    1. Try a ping from SF Router to 44.1.1.10 – it should succeed

  6. On SF router, go into OSPF router configuration mode and execute “redistribute static subnets” so that SF router will advertise 44.1.1.0/24 to other OSPF routers

    1. Try a ping from TX Router to 44.1.1.10 – it should succeed

  7. Check pings from SF Host to Chicago Server – it should succeed

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