Fiber Ring-In/Ring-Out Connections; Where To Go From Here - 3Com CoreBuilder 5000 User Manual

3-18 I M
NSTALLING THE ODULE
Fiber
Ring-In/Ring-Out
Connections
Where to Go From
Here
In a typical configuration, Dual Fiber Repeater Modules in separate
wiring closets are connected to the trunk ring through the fiber Ring-In
and Ring-Out ports. Refer to
specifications.
To establish a fiber Ring In/Ring Out connection:
When connecting Ring-In/Ring-Out ports to a non-CoreBuilder 5000
ring (ONline System Concentrator, IBM 8230 CAU), install a Jitter
Attenuator Daughter Card for the associated trunk ports to ensure
interoperability.
1 Remove the plastic fiber covers from the cable ports that will be used.
Keep the unused cable ports capped to keep the optics clean.
2 Before installing, make certain all cables have been properly cleaned
with an appropriate fiber optic cleaning solution.
3 Attach the fiber cables to the fiber ports on the front panel of the
module. Make sure the transmit and receive cables are:
Clearly marked or color coded
Connected to the appropriate ports on the module (for example,
the fiber Ring-In receive is connected to a fiber Ring-Out
transmit)
Do not exceed the bend radius for the fiber cable when directing the
cables under the hub. Refer to the cable manufacturer's specifications
for minimum bend radius.
4 Attach the other end of the cable to another Token Ring fiber trunk
port. Make sure the transmit fiber at one end of the cable is always
connected to a receive port at the other end.
5 If connecting to an ONline System Concentrator or IBM 8230, issue the
SET TRUNK {slot} {RING_IN/RING_OUT} COMPATIBILITY_MODE
command from the DMM in the CoreBuilder 5000 hub to ensure
compatibility.
Once you complete this chapter, go to
Configuring the Module, describes how to configure CoreBuilder 5000
Token Ring Media Modules using management commands.
Chapter 2 for fiber trunk cable
Chapter 4. Chapter 4,