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.


                                                                           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

Explain the term - carrier sense multiple access, What is use of Carrier se...

What is use of Carrier sense multiple access Carrier sense multiple access with collision detection (CSMA/CD) is a form of medium access control in which a station listens to

Configure VTP Pruning on the Switches- CCNA, Configure VTP Pruning on the S...

Configure VTP Pruning on the Switche s VTP pruning allows a VTP server to suppress IP broadcast traffic for particular VLANs to switches that do not have any ports in that VLAN.

Explain torus interconnection networks, Torus: The mesh network with wrap ...

Torus: The mesh network with wrap around connections is termed as Tours Network. Figure: Torus network

User server interaction - application layer , User Server Interaction ...

User Server Interaction Cookies of the world  wide  web  was originally designed  as a stateess entity. A client  sends a request and the server responds. Their  relationship

Describe about packet switching, Q. Describe about Packet Switching? P...

Q. Describe about Packet Switching? Packet Switching - Data are transmitted in separate units - Called Packet - Packets are variable length blocks - The max leng

Multicast extension to ospf, MOSPF MOSPF is multicast extension to OSP...

MOSPF MOSPF is multicast extension to OSPF. This protocol is extension of OSPF which is a unicast routing protocol which make MOSPF a combination of unicast and multicast prot

Calculate the modulation index and find the bandwidth, Consider a signal x(...

Consider a signal x(t) = 10 cos(2πfct + 4 cos 2πfmt). Assume frequency modulation. The message frequency fm = 2:3 kHz. Calculate the modulation index and find the bandwidth when

Explain the operation of a token ring topology for a lan, Question: (a)...

Question: (a) Show by means of a diagram the Ethernet frame structure and describe the six fields of the Ethernet frame structure. (b) Explain the operation of the Carrier S

Asynchronous or statistical time division multiplexing, Asynchronous or Sta...

Asynchronous or Statistical Time Division Multiplexing As we  have seen  synchronous  TDM does not  guarantee that the full capacity of a link in sued. In fact it is more like

Write Your Message!

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