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To the Laboratories of the Department of Electrical Engineering and Computer Science To All Laboratories

Communication Networks Laboratory

  • Overview
  • Equipment
  • Experiments

The following picture shows an example of a large network topology, which is built in the lab

[Translate to English:] Beispielkonfiguration Netzwerklabor

All networking devices and connections need to be setup by the students. Only core components (Switch 0 and Router 0) are administered and pre-configured by the teacher. Depending on the laboratory, the students have to change the infrastructure.

List of Experiments:

1. Layer Model

Introduction of the layer model and additionally, consideration of requirements on the Physical Layer

2. Reliable data transfer

Goal of the lab is a deeper understanding of error handling procedures in networking protocols by implementation of an own protocol. An unreliable data transfer is improved by implementation of data link layer procedures e.g. error control handling to achieve a reliable data transfer

3. LAN/Switch

Understand the functional principle and configuration of a switch. Students learn to work with the console of a switch, configuration of VLANs, trunking and functionality of the Spanning Tree Protocol (STP)

4. Network Layer

Investigation of the interaction between the data link layer and network layer, based on experiments in the communications laboratory. In this lab a router is configured and the tool Wireshark is used in combination with ping, arp and tracert to analyze protocols in the data link layer and network layer.

5. Transport Layer

Goal of the lab is a deeper understanding of functionality and usage of the transport layer. For this purpose, congestion detection and flow control of TCP are investigated. Small programs e.g. by usage of the Java Socket API are developed, that act as client and server. Students investigate the functionality of TCP with Wireshark.

6. Application Layer

In this lab students become acquainted with application layer protocols and their functionality. As examples email protocols (SMTP, POP3 and IMAP) are investigated and partially implemented by the students

Furthermore, interested students have the ability to explore other tasks and applications like WLAN AP configuration, IP telephony or VMware implementation on a PE-R710 Server.

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