1. Networking Project
Open Shortest Path First(OSPF)

2. Introduction
 Allow routers to dynamically learn routes
to other routers and to advertise routes to
other routers.
 Keeps track of the state of all network
connections or links between itself and a
network.

3. Open Shortest Path First(OSPF)
 Link-state routing protocol.
 Most widely used Interior Gateway
Protocol(IGP)
 Operate within a single Autonomous
System(AS)
 Transport IP,protocol type 89

4. Open Shortest Path First(OSPF)
 Uses a link State Routing Algorithm or
Shortest Path First algorithm.
 Computes the Shortest Path Routing using
a method based on Dijkstra’s algorithm.
 Supports VLSM/Classless.

5. OSPF-Metric
 Selects the best routes by finding the
lowest cost paths to a destination.
 All router interfaces or links are given a
cost.
-Based on bandwidth
-Can be set explicitly.

6. OSPF-Update destination
address
 224.0.0.5(All SPF Routers)
 224.0.0.6(All Designated Routers)

7. OSPF-Areas
 Uses areas to organize a network into a
hierarchal structure
-Minimizes routing table entries.
-Localizes impact of topology change within the area.
-Detailed LSA flooding stops at the area boundary.

8. OSPF-Areas
Area 1
Area 4
Area 0
Backbone Area
Area 2 Area 3
 Group of contiguous
nodes/networks
 Per area topology DB
◦ Invisible outside the area
◦ Reduces routing traffic
 Backbone Area is contiguous
◦ All others areas must connect to the
backbone

9. Objective of Project:
 Set up the physical layout of the network
using the diagram and accompanying
narrative
 Correctly configure single-area OSPF
 Correctly configure VLANs and 802.1q
trunking
 Correctly configure Frame Relay

10. Objective of Project:
 Correctly configure DHCP
 Correctly configure NAT
 Create and apply access control lists on the
appropriate routers and interfaces
 Verify that all configurations are operational and
functioning according to the scenario guidelines
 Provide detailed documentation in a prescribed form
as listed in the deliverables sections

11. Scenario of the project

12. Snapshot

13. Verification and Testing
SOURCE DESTINATION PROTOCOL EXPECTEDRESULT
HostonVLAN2 ISP HTTP Success
HostonVLAN2 HostonITS-DELLan PING Success
HostonVLAN2 HostonVLAN3 PING Failure
HostonVLAN2 HostonVLAN4 PING Failure
HostonVLAN3 HostonVLAN4 PING Failure
HostonVLAN3 HostonITS-DELLan PING Failure
HostonVLAN3 ISP HTTP Failure
HostonVLAN4 HostonITS-DELLan PING Failure
HostonVLAN4 ISP HTTP Failure
HostonITS-DELLan ISP HTTP Success

14. Future Scope of Improvement:
 Wired connections in the network can be
replaced by wireless technology, thereby
enabling remote troubleshooting and reducing
cost.
 Port security can be implemented improving
security of the paths and the network as a
whole.
 Many more clients can be added to each of the
switches using trunk mode.
 DNS,VTP can be further implemented.

15. Project Submitted By