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Switch Fabric and V6.2 Controllers
Table 3-6
XM Switch Fabric Jumper Settings
Jumper
JP1
JP2
Special Considerations
•
Setting Priority Mode (J1)
For normal operation, set JP1 to the upper position (High Mode) to ensure the high priority cells
are always sent before low priority cells. Be aware that if most of the traffic is high priority, the
low priority cells may never get delivered because there will always be high priority cells to
process. In this situation, set JP1 to the lower position (High/Low Mode) to ensure that cells in
both queues are processed alternately.
•
Setting LED Display (J2)
JP2 enables or disables the flashing TX/RX LEDs when cells are transmitted or received.
For normal operation, set JP2 to the upper position (pins 1-2 jumpered) to enable LEDs to flash
only when the XM module is in service.
3-12
Position
Setting
Description
Upper
High
High priority cells have preference over low priority cells. Cells
Mode
in the low priority queue are only sent when the high priority
queue is empty. (Normal operation)
Lower
High/Low
Low priority cells and high priority cells are equal.
Mode
Both queues are examined alternately.
Upper
RX/TX LEDs flash only when the module is in-service. (Normal operation)
Lower
RX/TX LEDs are always off.
No jumper RX/TX LEDs will flash if the module is in-service and out-of-service
Xedge 6000 Hardware
Installation & Setup Guide
Switch Fabric Setup
032R440-000
Issue 17
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