Comtech EF Data CDM-IP 300L - Manual (Page 31)

CDM-IP 300L IP-Centric Satellite Modem Rev. 1
CD/CDMIP300L.IOM
3
A benefit of this feature is that whenever framed operation is selected, the remote
demodulator’s E
b
/N
o
can be viewed from the front panel display of the local modem.
1.3.2 S
OFTWARE
The internal software is both powerful and flexible, permitting storage and retrieval of up
to 10 different modem configurations. The modem uses ‘flash memory’ technology
internally, and new firmware can be uploaded to the unit from an external PC. This
simplifies software upgrading, and updates can now be sent via the Internet, E-mail, or on
disk. The upgrade can be performed without opening the unit, by simply connecting the
modem to the serial port of a computer.
1.3.3 V
ERIFICATION
The unit includes many test modes and loopbacks for rapid verification of the correct
functioning of the unit. Of particular note is the IF loopback, which permits the user to
perform a quick diagnostic test without having to disturb external cabling. During the
loopback, all of the receive configuration parameters are temporarily changed to match
those of the transmit side. When normal operation is again selected, all of the previous
values are restored.
1.3.4 IGMP S
UPPORT FOR
M
ULTICAST
IGMP is a standard feature in the CDM-IP. If enabled, it responds to IGMP queries for
the configured multicast routes on the transmit side and generates IGMP queries on the
receive side. If there are no active IGMP receivers on the LAN, it will stop forwarding
the multicast traffic (received from the satellite) to the LAN.
1.3.5 easyConnect  M
ODE
easyConnect  is the new CDM-IP modem intelligent networking solution that allows a
link to be setup with minimal configuration (no specific routes need to be configured).
The CDM-IP also supports non-IP traffic with easyConnect
. All IP traffic will be
subject to user configured QoS restrictions.
1.3.5.1 easyConnect  O
PERATION
The following is a detailed description of how an easyConnect  pair should be setup and
configured as well as information about how easyConnect  functions.
Because easyConnect  is a “smart wire,” the devices that are attached to it on either
side of the satellite should be on the same subnet and should not configure a next hop
address to be the CDM-IP (as should be done with router mode). For purposes of
configuration, easyConnect
 mode should be viewed to function in much the same
way as a bridge (however, without spanning tree protocol).