![Cyan L-AMP Скачать руководство пользователя страница 33](http://html.mh-extra.com/html/cyan/l-amp/l-amp_engineering-and-planning-manual_2701312033.webp)
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
33
1.2.3 Common Equipment Module (CEMi)
The CEMi I-Temp controller card provides the timing subsystem, telco alarms, inventory management, fan
control, active/standby arbitration, and an integrated DCN for the Z22 and Z33 shelves.
•
Power: 8 watts typical, 10 watts maximum
•
Weight: 0.96 lbs. / 435 grams
•
Height: 5.8" / 147 mm
•
Depth: 11.5" / 292 mm
•
Width: .9" / 23 mm
•
Timing: Stratum 3
•
Four Ethernet interfaces:
Craft: 1 x 10/100/1000Base-T RJ-45
iLAN: 2 x 10/100/1000Base-T RJ-45
DCN: 1 x 100Base-FX SFP
The Data Communication Network (DCN) 100Base-FX SFP port provides an optional method for
supporting DCN management connectivity to the node.
The iLAN Ethernet interfaces provide DCN connectivity and make use of OSPF routing (iLAN to iLAN
connection). The ports are typically connected to an Ethernet switch used for management networking. The
iLAN ports can also provide IP access to secondary shelves (Z22, Z77, and other Z33 nodes). For a
description of the Z77 iLAN ports, see
BOSS Termination Module
starting on page 131.
Figure 4: CEMi Controller Card
Note: A CEMi I-Temp controller card and a standard CEM C-Temp controller card can be
co-located in the same Z33 shelf.
Important! – Multiple connections from a single CEMi controller card to different
far-end CEMi controller cards is supported in both point-to-point and ring topologies.
However, multiple connections between the Ethernet ports (fiber or copper) of two
CEMi controller cards in the same shelf should be avoided as this can result in an
inadvertent Ethernet loop that could severely impact the performance of the system.
CEMi iLAN, DCN, and MSE-1482 Connectivity Options
The CEMi iLAN and DCN ports, in combination with the MSE-1482 line card, provide several connectivity
options and features depending on the application requirements and system configuration. Two example
configurations are described below.
When used with MSE-1482 line cards, the CEMi controller cards can provide management transport
connectivity instead of installing LAD modules which are typically configured to provide the shelf
connectivity. The CEMi controller card iLAN port provides the transport connectivity between MSE-1482
line cards installed at adjacent node locations.