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TOPIC: Querstion on IPV4

Querstion on IPV4 11 years 7 months ago #23064

could u please explain about what are the various services offered by IPV4.. Since its occupy 8 bits in IPV4, it has so many services and what are the importance of the TYPE OF SERVICE FIELD(TOS)


Re: Querstion on IPV4 11 years 7 months ago #23067

  • mew
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The modern definition of the TOS byte is a six-bit Differentiated Services Code Point and a two-bit Explicit Congestion Notification field.

You can find each of these briefly defined on wikipedia.

In simple terms this field is now used in QoS (Quality of Service) to identify voice, video, data, routing protocols, etc. (voice, mission-critical, best-effort).

This is done to allow for providing priorities to each and then allocate bandwidth such that in times of congestion you still get an expected "Quality of Service"

This subject is covered in detail in the new CCNP:ONT class and certification guide.

Re: Querstion on IPV4 11 years 7 months ago #23070

Thank u very much....
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