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

What is the use of a default gateway, What is the use of a default gateway?...

What is the use of a default gateway? Default gateways give means for the local networks to connect to the external network. The default gateway for connecting to the external

Multiple activity charts, A multiple activity chart records the related ...

A multiple activity chart records the related sequence of activities of more than one subject, men and / or machine on a common time scale showing the relationship between

Bandwidth and functionality, The performance of interconnection networks is...

The performance of interconnection networks is calculated on the given parameters. Bandwidth:  It is a calculated of maximum transmit rate among two nodes.   It is calculated i

Briefly describe three security requirements of an agent, QUESTION (a) ...

QUESTION (a) Briefly describe three security requirements of an agent (b) List four threats that may be caused by malicious hosts to mobile agents (c) Describe the forwar

Describe the advantages of intranet to the organisation, Describe the advan...

Describe the advantages of Intranet to the organisation The most obvious advantage is that everyone with access to a computer terminal connected to the Intranet can obtain the

What is frequency borrowing, What is Frequency borrowing In the simples...

What is Frequency borrowing In the simplest case, frequencies are taken from adjacent cells by congested cells. The frequencies can also be assigned to cells dynamically.

Two commands that copies the configuration in nvram to ram, Recognize the t...

Recognize the two commands that copies the configuration in NVRAM to RAM Ans) a) Copy startup-config running-config b)  Configure memory

Illustrate the products based on socks protocol, Illustrate the products ba...

Illustrate the products based on Socks protocol There are a number of products based on SOCKS specifications such as Auto SOCKS available in the market. The latest version is S

State control frame - solicit successor, Control Frame: solicit_successor ...

Control Frame: solicit_successor Periodically ask for any station to link by sending solicit_successor Token with sender's addr and successor's addr wait 2 (as in

Modem stands for modulator - demodulator, Q. Modem stands for modulator - d...

Q. Modem stands for modulator - demodulator ? - Modulator are to creates an analog signal from binary data - Demodulator are to recovers the binary data from the modulated s

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