100Base-TX Networks
The hub limit of a 100Base-TX network depends on the class of the hub in the network. With a Class I hub, the network is limited to one hub. With a Class II hub, the network is limited to two hubs.
However, you can expand your 100Base-TX network that includes either class of hub by adding a MIL-S1000. With the MIL-S1000 added to your 100Base-TX network, you can separate that network into individual segments with their own collision domains. In other words, you can connect one 100Base-T network with one or two hubs to the MIL-S1000, and you can connect another 100Base-TX network with one or two hubs to the MIL-S1000. You will then have one network with two collision domains.
Figure 2-2.Expanding your 100Base-TX network (Class I)
