Instruction manual

Installing and Stacking BayStack Hubs
2-6 893-839-C
Interconnecting Your Stack
The cascade and management extension ports on each hub are designed to
increase the capability and flexibility of your network. Use a Bay Networks
optional cascade cable between hubs that are adjacent, and use your
management extension cable to extend network management to remote
cascades in your stack.
Connecting the Stack with Cascade Cables
You can expand the number of port connections on a network without
increasing the number of repeater hops by connecting your 100-series hubs
with cascade cables and assigning them to the same segment (also called a
collision domain). All hubs in the same cascade that are assigned to the same
segment operate as a single Ethernet repeater.
The following information is carried by the cascade cable:
• Three separate Ethernet data paths (segments)
• Stack management information
• Stack position information
Because a cascade of 100-series hubs functions to some extent as a single
entity, keep in mind the following cascade restrictions:
• Your stack must not exceed a total of 10 hubs.
• Network data flow will be interrupted briefly each time there is a break in
the cascade connection.
• At least one in four hubs in a stack must be on to provide sufficient power
to maintain management and connectivity to the stack. The first few hubs
powered on in a stack may not begin the configuration process until that
minimum has been met.
To order BayStack 100-series cascade cables, contact your Bay Networks
distributor.
893-839-CBook Page 6 Thursday, December 12, 1996 4:18 PM