Routers
1
Routers
2
Introduction
The purpose of this paper is give a summary of the function and use of Routers in today’s information age. To cover the complete subject of routers and routing, would be beyond the scope of this research paper. However the basic definition of a router is “ A device used to connect networks of different types, such as those using different architectures and protocols. Routers work at the Network layer of the OSI model. This means they can switch and route packets across multiple networks. They do this by exchanging protocol-specific information between separate networks. Routers determine the best path for sending data and filter broadcast traffic to the local segment.”
( Microsoft Press, 1998)
Discussion
In order for information to pass fro one information system to another information system outside its local area it must be routed. In the below table is an illustration of a the route a data packet takes between my computer and the Web Server for Macon State College.
Tracing route to www.maconstate.edu [168.16.176.4] over a maximum of 30 hops:
Routers
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TABLE 1
1 <10 ms <10 ms <10 ms 10.10.10.25
2 <10 ms <10 ms <10 ms 10.10.100.2
3 <10 ms <10 ms 16 ms 10.10.14.55
4 <10 ms 15 ms 16 ms 10.10.11.55
5 15 ms 63 ms 16 ms 216.46.52.5
6 32 ms 47 ms 46 ms c7513.vldsgacbds0-1.Hssi2-0-0.near.ptp.optilinkc omm.net [216.128.201.5]
7 62 ms 47 ms 94 ms c7513.vldsgacbds0-1.ATM3-0-0-2.far.ptp.optilinkc omm.net [216.128.201.38]
8 78 ms 94 ms 78 ms Serial2-7.GW4.DCA1.ALTER.NET [157.130.43.205]
9 94 ms 62 ms 79 ms 522.at-2-0-0.XR1.DCA1.ALTER.NET [152.63.37.70]
10 63 ms 94 ms 78 ms 195.ATM6-0.BR2.DCA1.ALTER.NET [152.63.36.93]
11 63 ms 94 ms 109 ms t3-0-0-0.pr1.Washington1.DC.us.netrail.net [205.
215.1.13]
12 1938 ms 1859 ms 1891 ms POS6-1.tr2.Atlanta1.GA.us.netrail.net [205.215.6
3.14]
13 1859 ms 1907 ms 1875 ms 205.215.60.197
14 94 ms 94 ms 94 ms Peachnet-655M.Atlanta1.GA.us.netrail.net
Routers
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15 78 ms 109 ms 94 ms 131.144.200.6
16 109 ms 94 ms 78 ms UD-MAC-MAC.Link.Peach.NET [131.144.102.226]
17 94 ms 94 ms 109 ms 168.16.128.214
18 94 ms 94 ms 109 ms www.maconstate.edu [168.16.176.4]
As can be seen in the above table it took 18 hops or to reach Macon.State.edu, this is referred to as the Metric count. If you...
... middle of paper ...
...AM ( non-volatile ram) I where the router-configuration files are stored. This memory will be retained even if the memory is lost. Also externally many different port configurations are available to meet the demands of the end user.
(Lammle, 1999)
Summary and Conclusion
The explosive growth of the internet over the past 10 years has fostered an almost equally explosive growth in the need to transmit data across vast distances quickly and reliably. Routers have kept pace with this demand. Routers are the traffic cops and road signs that make sure that the email you send to your friend across the country arrives at it’s intended destination. I have barely scratched the surface of information that is necessary to keep a enterprise router up and running. As we keep an eye to the future amazing things will continue to un-fold in the world of routers.
Routers
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References
Lammle, Todd and Porter, Donald. CCNA Study Guide. SYBEX, Network Press 1999
Albritton, John. Cisco IOS Essentials . The McGraw-Hill Companies 1999
(http://www.eece.maine.edu) 2001
Microsoft Press. Networking Essentials Second Edition. 1999
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