Specifications

6.4 Case 3: Multi-Ethernet Hub
6–6 Configuration Examples
6.4 Case 3: Multi-Ethernet Hub
Goal
Provide a collapsed backbone hub to support five separate LANs.
Design Requirements
• Collapsed backbone hub.
• Four redundant Ethernet fiber connections to remote LANs.
• Local Ethernet LAN with:
– Eight 10BaseT ports
– Thirty-two asynchronous ports
– Six 10Base2 (ThinWire) ports
– A Brouter with T1 WAN connection
• Full speed bridge support between all five LANs.
• Network management.
Suggested Configuration
• 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 900EE (provides for the collapsed Ethernet switching back-
bone).
– PORTswitch 900FP (provides for the fiber backbone links between the
floors of the building).
– DECbrouter 90T1 (The WAN connection for the building is made through
the DECbrouter 90T1).
– DECrepeater 90C (provides the six ThinWire ports).
– DECrepeater 90T16 (provides the eight 10baseT ports with eight additional
ports available for expansion).
– DECserver 900TM (provides the thirty-two asynchronous ports).
• clearVISN network management software.