Routing Protocols - OSPF

06.01.2010 23:02

Computers

Open Shortest Path First (OSPF) is a popular link-state routing protocol for IP networks. OSPF (Open Shortest Path First), which, as the name implies, is an open standard routing protocol used to seek out shortest path routes just like RIP versions. Mind you, the similarities ends there!.

OSPF is specially designed for large networks. The main idea behind OSPF is internetwork areas. An area is a zone within an autonomous system comprising of a logical set of network compartment and attached devices.



The areas are used by the routing system as a way to control traffic flow and filter out unwanted routing table details. Every OSPF domain must have a backbone area with number 0. Areas are created by using the keyword area as an argument with the network command, as shown below:

RouterHQ(config-router)# network 192.168.1.0 0.0.0.255 area 0

This command puts the subnet 192.168.1.0 into OSPF area 0.



Main characteristics / Features of OSPF

It is classless, offering full CIDR and VLSM support,.

It scales well, converges quickly, and guarantees loop free routing.



It also supports address summarization and the tagging of external routes, similar to EIGRP.

For networks that require additional security, you can configure OSPF routers to authenticate with one another to ensure that unauthorized devices don't affect routing tables.

OSPF is an open standard routing protocol. Every vendor routing hardware and software supports it. This makes it the routing protocol of choice in multi-vendor enterprise networks. It is also frequently found in most ISP networks.

Read more on how to configure OSPF: http://www.orbit-computer-solutions.com/Basic-OSPF-Configuration.php

CCNA Certification Exam: OSPF Lab Sim: http://orbitco-ccna-pastquestions.com/Cisco-ICND-Exam%3A-OSPF-Sim.php

Chika_Nwokeoma

  • Tuff Luv iPad Case - Choosing the Best Case for Your iPad Is Now Easy If a year and a half ago, the netbook was the king of the technology jungle, now it is time for the slate, also known as the tablet, to take the lead and show the world what brilliant minds can....
  • Tips To Get Great Janitorial Services From Local Providers Most big companies these days like to have their own office complexes to house their staff and operations. But sometimes the need to keep this place in good order is too much of a problem, so t....
  • Reverse Phone Lookup - How This Could Help You? Did you lose a friend years back? Are you getting frequent anonymous calls? If you say yes to this situation, you should continue reading here. The good news is that you can find your friend's....
  • Get Your Business Organized Instantly! In order for your business to be successful and operate smoothly, it must be managed in an extremely organized fashion. While some have the knack for organization, many find it difficult. If yo....
Web Informer Button