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Cyan Z-Series Engineering and Planning Guide
Release 5.0
700-0023-05-00 Rev. 1
© 2013 Cyan, Inc. – All Rights Reserved.
P a g e
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Two MSE-1482 modules paired together in odd/even slots provide non-blocking STS-N connectivity
between the line cards. The graphic below shows an example of cross-connects between a pair of MSE-1482
modules.
OC-192/
STM-64
OC-192/
STM-64
OC-48/STM-16
OC-12/STM-4
OC-3/STM1
GbE
OC-48/STM-16
OC-12/STM-4
OC-3/STM1
GbE
STS
X-conn
STS
X-conn
Figure 57: MSE-1482 Any-to-Any Cross-Connect Capabilities
Note: Ring Closure Modules (RCMs) are required when using an MSE-1482 card pair in a Z77 shelf for
the following applications:
•
Cross-connecting MSE-1482 STS/AUG containers by creating SONET/SDH connections.
(A cross-connect is provisioned to groom traffic between a client optical port and the 10G uplink
port. Client and uplink ports can be on different cards in an MSE-1482 card pair.)
•
Pass-through connections between uplink ports. (Pass-through traffic is groomed by
cross-connecting to different STS structures on the uplink ports in an MSE-1482 card pair.)
•
MSE-1482 SONET/SDH protection groups.
For the MSE-1482 applications described above, the Z77 shelf is typically configured with four RCMs.
All four RCMs must be installed in the horizontal EFM slots. RCMs are not required for the Z22 or Z33
shelf. For additional information on the RCMs, see
Ring Closure Modules
starting on page 135.
You can install MSE-1482 line cards in a Z77 shelf supported by the XC-2800 switch fabric. The
XC-2800 switch fabric module provides supports the MSE-1482 in a standalone muxponder
configuration. However, the XC-2800 switch fabric module does not support MSE-1482 card-to-card
backplane cross-connections or protection.
MSE-1482 SONET/SDH Protection Groups
Planet Operate provides SONET/SDH 1+1 protection groups for the MSE-1482 line card per ITU-T G.841,
G.842, G.808.1, and Telcordia GR-253. Line and Path layer protection are supported. Path protection refers
to Unidirectional Path Switched Ring (UPSR) or Subnetwork Connection Protection (SNCP). Cyan
SONET/SDH protection groups provide reliable protection for facility and hardware failures.
The protection mechanism splits the input signal at the point where it enters the Cyan transport network.
Copies of the traffic are transmitted in diverse routes using a working channel and a protect channel. Both
copies of the signal (working and protect) are monitored for quality. At the far-end, where the traffic is
dropped, traffic from the working and protect channels is compared. If the working transmission does not
have an acceptable signal quality, the system switches to the protect channel.