Newtec Proprietary
Confidentiality: Unrestricted
R3.2_v1.0
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Feature Descriptions
MDM9000 Satellite Modem
The MDM9000 supports two forwarding modes:
1. Layer 2 Forwarding Mode
As Layer 2 Ethernet bridge, the MDM9000 transparently forwards any Layer 3 protocol, MPLS or
VLAN tagged traffic. Consequently it can be considered to act as an Ethernet cable over satellite.
However, operating as Layer 2 Ethernet bridge creates extra overhead. Connected network
segments act as one broadcast domain, which can generate some traffic overhead on the satellite
link as well (for example ARP requests being sent over the satellite link).
Also note that the MDM9000 operates in promiscuous mode, meaning that it will forward any
incoming packet over the satellite link (for example ARP requests from host A to B while A and B are
on the same LAN segment).
But classification rules can be defined to limit this (excessive) traffic overhead.
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