Instruction manual

Configuration Rules for BayStack Hubs
3-2 893-839-C
• An optional NMM can be installed to provide network management for
each segment in a stack. For more information about using an NMM in
your stack, refer to Using the BayStack 100-series Network Management
Modules.
Simple Rules for Ethernet Network Compliance
The Ethernet standard has operating guidelines that are based on the number of
repeaters between the most distant nodes in your network. A repeater extends
the distance an Ethernet packet can travel by regenerating the signal at the
physical layer of the OSI model. Within a stack, all hubs that are on the same
segment and in the same cascade are counted as one logical repeater. F
igure 3-1
shows a schematic for a network path containing five repeaters.
Figure 3-1. Example of network complying with simple Ethernet rules
Network Path Containing Two or More Repeaters
Use the following simple rules to assess your network for compliance with
Ethernet operating standards. When all of the following requirements are met,
your network is Ethernet compliant:
• No path through the network contains more than five repeaters.
• No more than 1024 stations are connected.
1 km 10BASE-FL cable
1.5 km 10BASE-FL cable
100 m
10BASE-T
MDI-X/MDI connection
100 m
10BASE-T
MDI-X/MDI connection
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893-839-CBook Page 2 Thursday, December 12, 1996 4:18 PM