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

Frame filtering, FRAME FILTERING:  The very important task a bridge op...

FRAME FILTERING:  The very important task a bridge operates is frame filtering. If both the destination and source are on the same segment, it does not repeat the frame to the

What to do to connection with external communication, What to do to connect...

What to do to connection with external communication For dealing with external communication, the Web server must have a static IP. Having a static IP could also be a problemat

What is internet, What is Internet? Internet is a collection of network...

What is Internet? Internet is a collection of networks or network of networks. Various networks like LAN and WAN connected by suitable hardware and software to work in a seamle

Describe a basic communication model, NETWORK MANAGEMENT & SECURITY 1. ...

NETWORK MANAGEMENT & SECURITY 1. Describe a basic communication model. 2. State the following terms: a. Configuration Management b. Fault Management c. Security Management

Which applications of computer network can be categorized, What are the mai...

What are the main categories based on which applications of computer network can be categorized? The major areas under which the applications for computer network can be divide

What do you understand by service access point, Q. How two adjacent layers ...

Q. How two adjacent layers communicate in a layered network or what do you understand by Service Access Point? Ans: In layered network, each layer has several entities and enti

Command that shows traffic statistics on serial 0/1, Recognize the command ...

Recognize the command that shows traffic statistics on serial0/1? Ans) show interface serial 0/1

Signal to noise ratio, Problem 1. Explain the TCP/IP Reference Model wi...

Problem 1. Explain the TCP/IP Reference Model with diagram 2. Describe the following Maximum Data Rate of a Channel Signal to Noise Ratio   3. Describe the

How do we describe the concept of dpu, How do we explain the method of DPU,...

How do we explain the method of DPU, Segments, Datagram, Frame and  packet?

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