Comtech EF Data CDM-840 - Manual (Page 206)

CDM-840 Remote Router Revision 2
Appendix C MN-CDM840
C–14
C.10 Glossary
Term Definition
ACM/VCM Adaptive Coding and Modulation / Variable Coding and Modulation
Bridge Mode This Advanced VSAT Network Working Mode configures the Traffic ports of the
CTOG-250 and CDM-840 to function as a Bridge.
BPM Mode Bridge Point-to-Multipoint Mode
Comtech Dynamic Routing
Protocol (CDRP)
CEFD Proprietary protocol that automatically synchronizes the CTOG-250’s Route
table with the CDM-840’s LAN connected routes – i.e., the routes that are directed
to the LAN ports of the CDM-840.
CTOG-250 Comtech Traffic Optimization Gateway 250.
Entry Channel Mode (ECM) Shared Aloha channel used in Vipersat dSCPC Mode that allows a remote terminal
to gain access to the Network.
Flat Network A network in which all devices are directly connected to each other and all devices
are on the same IP subnet.
IGMP Internet Group Management Protocol
Router Mode This Advanced VSAT Network Working Mode configures the Traffic ports of the
CTOG-250, CDD-880, and CDM-840 to function as a Router.
Single Hop on Demand
(SHOD)
This CEFD technology allows for dynamic creation of Single Hop Mesh connections
from one CDM-840 to another CDM-840. SHOD requires the Vipersat Management
System (VMS).
VLAN Access Mode This mode, only available in the CDM-840, forces the Traffic Interface to carry traffic
for only one user-configured VLAN.
VLAN Trunking Mode This is the default mode for BPM, where all packets (with and without VLAN tags)
arriving at the CTOG-250 and CDM-840 pass through the system without
modification. A trunked port can pass two or more VLANs on the interface.