User's Manual Part 1
Release8OverviewofCycloneNetworks
Issue2,November2007 Draft5forRegulatoryReview 54
Figure 8: CMM2 enclosure
Figure 9: CMM2 pole-mounted
5.1.12 ClusterManagementModulemicro(Part1070CK)
The Cluster Management Module micro (CMMmicro) provides power, GPS timing, and
networking connections for an AP cluster. Unlike the CMM2, the CMMmicro is
configurable through a web interface.
The CMMmicro contains an 8-port managed switch that supports Power over Ethernet
(PoE) on each port and connects any combination of APs, BHMs, BHSs, or Ethernet
feed. Cyclone PoE differs from 803.3af PoE, and the two should not be intermixed. The
CMMmicro can auto-negotiate speed to match inputs that are either
100Base-TX or 10Base-T, and either full duplex or half duplex, where the connected
device is set to auto-negotiate. Alternatively, these parameters are settable.
A CMMmicro requires only one cable, terminating in an RJ-45 connector, for each
connected module to distribute
• Ethernet signaling.
• power to as many as 8 collocated modules—APs, BHMs, or BHSs. Through a
browser interface to the managed switch, ports can be powered or not.
• sync to APs and BHMs. The CMMmicro receives 1-pulse per second timing
information from Global Positioning System (GPS) satellites through an antenna
(included) and passes the timing pulse embedded in the 24-V power to the
connected modules.
GPS status information is available at the CMMmicro, however
• CMMmicro provides time and date information to BHMs and APs if both the
CMMmicro is operating on CMMmicro Release 2.1 or later and the AP/BHM is
operating on Cyclone System Release 4.2 or later.
See
Time Tab of the AP on Page 191.
• CMMmicro does not provide time and date information to BHMs and APs if either
the CMMmicro is operating on a release earlier than CMMmicro Release 2.1 or
the AP/BHM is operating on a release earlier than Cyclone System Release 4.2.