Suppression of Delayed Packets in Networks

...

5. Priority Server Module (Scheduler Module)

- Each client packets are first comes in this corresponding priority server (i.e High, Low, Medium).

- After wards only it transfer to the centralized scheduler server.

- In Each priority server , we apply the following 2 services

- Backlogged

- Non Backlogged

- Backlogged

Particular priority client data are not allow to send the data to other users.

- Non Backlogged

Particular priority client data are stored in the server queue, when we again allow for blocked messages that time only the blocked messages are forwarded to the destination.

- REQUIREMENTS SPECIFICATION

3.2.1 HARDWARE SPECIFICATION

Processor: Any Processor above 500 MHz

Ram: 128Mb.

Hard Disk: 10 GB.

Compact Disk: 650 Mb.

Input device: Standard Keyboard and Mouse.

Output device: VGA and High Resolution Monitor.

3.2.2 SOFTWARE SPECIFICATION

Operating System: Windows 2000 server Family.

Techniques : JDK 1.5

Data Bases: Microsoft SQL

4. SOURCE CODE AND IMPLEMENTATION

The following project is done in Java using applets.

[pic 4]

Fig. 3.1

5. CONCLUSION

- In this paper, proposed OCGRR in the Differ domain and compared its performance with DRR+, DRR++, and PQWRR. We use buffer per stream in each class in order to provide fairness for source routers.

- OCGRR has the features/ capabilities of using smaller frame lengths and rounds; sending traffic packet by packet in smaller rounds;

reducing the intertransmission time from the same stream; reducing

queuing delay, jitter, and startup latency; controlling the starvation of

lower priority classes; and beginning the transmission in each class

from a delayed stream in the previous logical frame to ensure low

latency and fairness.

- It can also keep the fairness for streams at an acceptable level. A desired QoS performance can be obtained by adjusting class indices.

- In future enhancement is DiffServ domain by using OCGRR at the routers.

6. FUTURE ENHANCEMMENT

There are a number of avenues for future work; our future research is to study end-to-end QoS in a DiffServ domain by using OCGRR at the routers. This is a challenging and interesting issue as it would require the schedulers in routers along the path to cooperate with each other to provide a desired QoS.