Introduction
Concentrator
Concentrator
A B
C
Network 9000 Chassis
Midplane Ethernet
Segments
External LAN
Sales
Accounting
Manufacturing
Concentrator
LAN
Bridge/Router
Figure 1-3. Midplane Ethernet Segment Configuration 1
The LAN bridge/router has three Ethernet links, and in this example each one connects to
a different midplane segment. The fourth link on the LAN bridge/router provides a
connection to an external LAN. This configuration allows the users on the managed
concentrators to communicate and share resources transparently.
With the configuration in Figure 1-3, a user in Sales can obtain information from a host in
Accounting because the Managed Concentrator on Segment C is linked to the Managed
Concentrator on Segment B. Similarly, a user in manufacturing can gain access to
resources in Sales or Accounting through the LAN Bridge/Router.
You can add another concentrator to any of the three midplane segments, or you can add
other modules to the chassis. Figure 1-4 represents the same chassis with the addition of a
terminal server and a WAN Bridge/Router.
0020
17
