Specifications

6.6 Case 5: Collapsed Fiber Optic (Campus) Ethernet Backbone
6–14 Configuration Examples
6.6 Case 5: Collapsed Fiber Optic (Campus) Ethernet
Backbone
Goal
Design a collapsed fiber optic campus backbone. This is similar to Case 4, but there
is no fiber optic redundancy, allowing the use of a DECswitch 900FO. Groups are
spread across multiple buildings. FDDI shared backbone is a likely future migration.
Design Requirements
• A centralized functional department is located in its own building, with shared
services and bridging between all LANs in the building.
• A central campus backbone with WAN access.
• A fiber optic campus backbone connection to 3 other buildings.
• Network management.
Suggested Configuration - Central Department:
This configuration is similar to Case 3.
• Platform type: Use a DEChub 900 MultiSwitch to support a mixture of half-
height and full-height modules and provide the integral management agent.
• Network Modules:
– DECswitch 900FO
– DECbrouter 90T1
– DECserver 900TM
– DECrepeater 90C
– DECrepeater 90T16
Suggested Configuration - Building 1:
This configuration is similar to Case 2.
• Platform type: DEChub 90
• Network Modules:
– DECrepeater 90FA
–DECagent 90