PMP Synchronization Solutions User Guide
Ethernet Switch
PMP-0297 007v001 (January, 2017)
3-7
Ethernet Switch
The model 1090CKHH CMM4 is available with a hardened, full-featured Ethernet switch made by
EtherWAN Systems mounted inside the CMM4 enclosure. The CMM4 ships with a 14-port
EtherWAN switch. Earlier units shipped with a 9-port EtherWAN switch.
For details on the EtherWAN switch, including the download site for its separate manual, see page
Currently CMM4s ship as model number 1090CKHH and include a 14-port EtherWAN switch.
Twelve ports support 10/100Base-T Ethernet and two ports supports 1000Base-T (Gigabit)
Ethernet. Typically, eight ports are connected to the eight ports on the controller board via eight
Ethernet patch cables, one port is connected to the management port of the controller board, and
the remaining ports are available for connecting to high speed backhauls, terrestrial feeds, or for
local access.
Earlier CMM4s shipped as model number 1090CKHH and included a 9-port EtherWAN switch.
Eight ports support 10/100Base-T Ethernet and one port supports 1000Base-T (Gigabit) Ethernet.
Typically, eight ports are connected to the eight ports on the controller board via eight Ethernet
patch cables, and the Gigabit Ethernet port is connected to the management port of the controller
board if the port isn’t needed for Gigabit Ethernet.
Regardless of CMM4 option chosen, one of the ports on the switch must be cabled to the
management port of the controller board or other access to the controller must be provided. The
eight Ethernet lines pass through the controller board and have power and sync injected, but do
not themselves provide network access to management of the controller board.
CMM4 models 1091HH and 1092HH do not contain an EtherWAN switch, and operators may
supply an external switch for Ethernet traffic management (such as switch-based VLAN, MAC-
based trunking, port security, port mirroring, QoS, etc.)
