Comtech EF Data CDM-710G - Manual (Page 111)

CDM-710G High-Speed Satellite Modem Revision 1
Front Panel Operation MN-CDM710G
6–35
If Intfc2 SWOP: Æ Learning is selected:
Intfc2 Learning:
Enable Disable ( E)
IMPORTANT
Unit power must be cycled whenever Learning mode is enabled or disabled.
Learning is an Ethernet switch function that allows the LAN (user) side of the Gigabit Ethernet
port to learn the MAC addresses of the equipment connected to the Gigabit port.
Learning applies only to the LAN (user) side of the port. There is no learning on the WAN
(modem) side of the Gigabit Ethernet port.
If enabled, the interface is in LAN-to-WAN learning mode, and the Gigabit Ethernet Interface
(GBEI) learns connections based on source MAC addresses and ingress ports. The hub thinks the
remote site network nodes are local to the hub site network and does not send the traffic over the
outbound carrier to the remote site.
If disabled, the GBEI passes all packets from the LAN to the WAN.
Select Enable or Disable using the W X arrow keys. Press
ENTER, then cycle the unit power .
6.3.1.7 CONFIG: Ref
Frequency Reference
External 10 MHz ( E)
External 10 MHz
The unit phase locks to an external input at the BNC connector labeled EXT
REF
. Other selections are available for External 1, 2, 5, 10, or 20 MHz input.
Note the following:
• Internal selection is available at 10 MHz.
• If there is a faulted/no External Reference In, the unit reverts to using an Internal
Reference.