Output port - network layer and routing , Computer Networking

Assignment Help:

Output Port

The function of the  port is  take  the packets that have  been stored in the out  put port  memory and transmits them over the out going  link. The queuing  and buffer management  functionality required  when  the switch  fabric  delivers packets to the output  ports  at a rate that exceeds the output  link  rate.

2095_output port 236.png

                                                                    Figure  output  port processing

Output   port  queuing is that a packet scheduler  at the output  port must  over packet among  those queued for transmission. This selection might  be done  on a simple  basis. Such  as first  come first served scheduling. Or a more sophisticated scheduling  such a weighted fair queuing which shares the outgoing  link  fairly among  the different  end to end  connections  that have  packet  queued for transmission.

2055_output.png

                                                                           Figure output port queuing

Figure  shows  the output port  queuing. At time a packet has arrived at each of the  incoming  input  ports each destined  for the  outgoing port. Assuming identical line  speeds  and a switch  operating at three times  the line speed, one  time unit  latter that is in the time  needed to receive or send a packet all three original packets have been transferred to the outgoing out and are queued awaiting  transmission. In the next time  unit  one of these three packets will have been transmitted over the outgoing link. By  the example  two new packet shave arrived at the  incoming  side  of the switch  one of these  packets  is destined for output  port.


Related Discussions:- Output port - network layer and routing

Show the drawbacks of go-back-N, Q. Show the Drawbacks of Go-back-N? D...

Q. Show the Drawbacks of Go-back-N? Drawbacks of Go-back- N - Inefficient - Every out of order received packets are discarded (receiver side is simplified) - This

Two metrics used to make routing decisions, In Novell's use of RIP, there a...

In Novell's use of RIP, there are two metrics used to make routing decisions.  What are they? Ans) A. Ticks. B. Hops

What is network layer of osi model, Q. What is network layer of osi model? ...

Q. What is network layer of osi model? - Describe end-to-end delivery of packets. - Defines logical addressing thus that any endpoint can be identified. - Defines how ro

Shared programming using library routines, Shared Programming Using Library...

Shared Programming Using Library Routines The most well-liked of them is the use of combo function called fork() and join(). Fork() function is used to make a new child proces

Fiber distributed data interface, Question 1 Write short notes on (i) F...

Question 1 Write short notes on (i) Fiber Distributed Data Interface (ii) Serial Line Question 2 Explain Internet layer and transport layer Internet layer Tran

Types of Networking, How can I identify the difference types of networks

How can I identify the difference types of networks

Example of wan technologies, Some multiple WAN methods are defined below: ...

Some multiple WAN methods are defined below: ARPANET: It start in 1960's. It was operated by Advanced Research Project Agency, which is a company of US defense department.

Mobile interent technology, Question 3:4 By experimentation, work out the l...

Question 3:4 By experimentation, work out the lowest SNR, under which 4 users can si- multaneously communicate, without error, via this system. For SNR, simply report the largest v

Network Administrator Support, Dear expert; I have an assignment about Net...

Dear expert; I have an assignment about Network Administrator Support . Here is the topic about:- Virtualization is an emerging type of network operating system that is currently

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd