Bay Networks 58000, Installation And Reference Manual

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Network Configurations of the Model 58000 Switch
893-878-B 2-45
You could use 100 Mb/s UTP ports to connect devices up to 100 meters
(328 ft), and 100 Mb/s fiber ports operating in full-duplex mode to connect
devices up to two kilometers. The System 5000 host modules (Model 5308P)
also can be connected through the backplane segments of the System 5000 hub
to the Model 58000 switch.
The Model 58000 switch is connected to the network center servers through the
100BASE-T MDA ports, providing high-speed access to the critical resources
of the servers for both sets of end users in this example—the workgroup hub
end users on other floors or in remote sites and the System 5000 end users
connected locally. The switch also provides high-speed connectivity to a
high-capacity router, which provides routing between virtual LANs and
connects to other WANs or to a campus FDDI backbone.
This high-speed connectivity for local and remote users to critical centralized
resources, along with the microsegmentation capability of the switch, are the
primary features of the Model 58000 switch.
Wiring Closet Switch Configuration
Another configuration for the Model 58000 switch is as a wiring closet switch
within a collapsed backbone configuration (see
Figure 2-20 ). In this
configuration, the switch is located in a wiring closet with local servers.
Connectivity is provided to the network center through the high-speed
100BASE-FX MDA ports of the switch.
In this example, the BayStack 28104/ADV switch is collocated in the network
center with central servers and a router. The BayStack 28104/ADV switch also
connects to other wiring closets with a System 3000 hub and a BayStack
28115/ADV switch.
The Model 58000 switch offers the same features to the System 5000 end users
when the switch is located in the wiring closet as when it is located in the
network center. The benefits of microsegmentation and high-speed connectivity
to critical resources are the same in both configurations.
In this wiring closet configuration example, however, the Model 58000 switch
is not directly connected to a high-capacity router. The BayStack 28104/ADV
switch takes over this function, providing virtual LAN connectivity and access
through the router to the WAN and a campus FDDI backbone.
893-878-B Book Page 45 Monday, May 12, 1997 2:06 PM