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Hardware used for the experiments

Figure 6.1: The testbed used for the experiments. Our testbed consists of 6 PC-routers and Fast Ethernet hardware.
Image /home/yp9x/thesis/figures/Indra_testbed.jpg

Table 6.1: IP addresses used in the Indra testbed. The interfaces of Monitor do not need to be assigned IP addresses to monitor the traffic on a link.
Name eth1 eth2 eth3 eth4
PC1 N/A N/A N/A 10.0.4.2
PC2 10.0.23.2 N/A 10.0.3.2 10.0.4.1
PC3 10.0.21.2 10.0.2.2 10.0.3.1 10.0.20.1
PC4 10.0.23.1 10.0.22.2 N/A 10.0.20.2
PC5 N/A 10.0.2.1 N/A N/A
PC6 10.0.21.1 10.0.22.1 N/A N/A


We perform our experiments on a testbed of six identical Intel PCs PII-450 with 128MB of memory running Linux and MPLS-Linux with our multicast extensions (see Figure 6.1).

Figure 6.2: Setup of the network used during the experiments. Monitor does not participate actively in the experiments and only monitors traffic on the link between PC2 and PC4 and on the link between PC4 and PC6.
\includegraphics[width=\textwidth]{figures/config_general}

The network topology is depicted in Figure 6.2. Each PC is equipped with five Fast Ethernet adapters (100BaseTX). Only one interface of each PC, eth0, has Internet access. This interface is not used during the experiments and is not represented in Figure 6.2. All other interfaces are not connected to the Internet. On each of the six PCs (PC1, PC2, PC3, PC4, PC5, PC6), we use up to four of the other interfaces (eth1, eth2, eth3 and eth4) to conduct our experiments. All links are full-duplex point-to-point 100BaseTX Ethernet cables. Table 6.1 shows the IP addresses of the interfaces.

In addition to the six PCs of the testbed, we use a seventh machine, ``Monitor'', for measurement purposes. Monitor has three interfaces. The first interface is connected to the Internet and is not used in the experiments. The second interface is used to capture the traffic on the link between PC2 and PC4 while the third interface is used to capture the traffic between PC4 and PC6. Monitor is connected to the link between PC2 and PC4 and to the link between PC4 and PC6 via Fast Ethernet hubs. Therefore, when PC2 sends a frame to PC4, this frame is received by both Monitor and PC4. Since Monitor only captures traffic on the wires of the network, we do not assign IP addresses to the second and third interfaces. Monitor only has a passive role and the presence of Monitor in the network is transparent to the experiments.


next up previous contents
Next: Measuring MPLS multicast throughput Up: Experiments Previous: Experiments   Contents
Yvan Pointurier 2002-08-11