Cyan Z-Series Engineering and Planning Guide Release 5.0
Page 76 © 2013 Cyan, Inc. – All Rights Reserved. 700-0023-05-00 Rev. 1
Ring Closure Modules (RCMs) or the Release 4.0 (or higher) XC-2800 switch fabric modules are required
and must be installed in Z77 horizontal Electrical Fabric Module (EFM) slots to support the following
PME-216i applications:
• Link aggregation using multiple ports between a pair of PME-216i modules
• A TESI Express connection using a pair of PME-216i modules
• An unprotected Ethernet drop over a protected TESI using a pair of PME-216i modules
Note: For PME-216i applications, the Z77 shelf is typically configured with four RCMs or a
Release 4.0 (or higher) Z77 shelf equipped with the XC-2800 switch fabric. All four RCMs or
XC-2800 switch fabric modules must be installed in the Z77 horizontal EFM slots. RCMs and
XC-2800 switch fabric modules are not required for the Z22 or the Z33 shelf.
The Release 4.0 (or higher) XC-2800 switch fabric consists of four individual switch-fabric
modules installed in the Z77 shelf horizontal EFM slots. For additional information on the
XC-2800, see XC-2800 Switch Fabric starting on page 135.
For additional information on RCMs, see Ring Closure Modules starting on page 135.
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