 |
|
|||
| Authors: | Ulrich Fiedler, Polly Huang, Bernhard Plattner |
| Group: | Communication Systems |
| Type: | Techreport |
| Title: | Overprovisioning or Differentiated Services - A Case Study on integrating services over IP |
| Year: | 2000 |
| Month: | October |
| Pub-Key: | FHP00 |
| Keywords: | web, VoIP, Overprovisioning, DiffServ, Provisioning |
| Rep Nbr: | 93 |
| Abstract: | A key question when integrating voice traffic into a corporate data network is cost vs. benefit. Will an Integrated Services network save WAN link capacity which determines network costs? Does the complexity of additional explicit quality of service enablers like Differentiated Services (DiffServ) pay off its capacity savings? In a case study we have simulated the busy hour of a bank s Intranet with ns-2 to determine the capacity needed with and without integration, with and without DiffServ. Due to online processing requirements we modeled all data traffic as web traffic with stringent response time requirements. Voice traffic was modeled as of ITU-T G.711 PCM type without silence suppression. For this case study integration of networks for data and voice on a conventional IP Intranet does not result in greater capacity needs. Moreover, we found that additionally deploying DiffServ on the integrated services Intranet did not save any capacity. |
| Resources: | [BibTeX] |
