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FAQ-Why the N1SL64 Cannot Be Installed in Slots 5, 6, 13 and 14 in Configuration of 200G Cross-connect Board on the OptiX OSN 3500

Publication Date:  2012-07-25 Views:  41 Downloads:  0
Issue Description
Q:
When you configure a 200G cross-connect board (N1IXCSA/B) on the OptiX OSN 3500 V1R7, why the N1SL64 cannot be installed in slots 5, 6, 13 and 14? The access capacity is 5G for slots 1�4 and 15�17, 10G for slots 5, 6, 13 and 14, and 20G for slots 7, 8, 11 and 12. 
 
Alarm Information
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Handling Process
A:
The cross-connect board (N1IXCSA/B) supports two compatible backplane rates of 622M and 2.5G. Other boards support only one fixed backplane rate. The N1SL64 needs 16 buses at a rate of 622M. The cross-connect board (N1IXCSA/B) has two buses in slots 1�4 and 15�17, four buses in slots 5, 6, 13 and 14, and 16 buses in slots 7, 8, 11 and 12. Therefore, the N1SL64 can be installed only in slots 7, 8, 11 and 12.
The cross-connect board supports two compatible backplane rates of 622M and 2.5G. Other boards support only one fixed backplane rate. Hence, consider both the access capacity of each slot and the bus distribution of the cross-connect board for board installation. This method also works for other line boards. 
 
Root Cause
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Suggestions
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