Comtech EF Data SLM-5650A Vipersat - Manual (Page 21)

Chapter 1 - General 1-7
Product Description
monitors the QoS queue depths and determines when to send the PAUSE
frames (IEEE 802.3) for management of data flow traffic.
Proxy ARP
The Proxy ARP feature activates the SLM-5650A to perform as the proxy
between the LAN and the satellite WAN and answer the ARP queries for a
network address that is not on the given network.
VLAN
The Port VLAN feature allows one of the four available Ethernet ports on the
SLM-5650A to be assigned for use by a specific VLAN, independent of the user
or system that is attached to the port.
v1.8.1 Release
Acquisition Mode
The SLM-5650A modem/router now offers two modes of choice for the Hub
Burst Controller to obtain acquisition of—detect and lock onto—the burst trans-
mission from each Remote in the group: Standard and Long. Standard mode
uses an uncoded preamble signature and results in a shorter preamble time.
Long mode uses a combination of uncoded and coded portions of the signature
that provides additional reliability, but results in a longer preamble time.
v1.9.1 Release
Satellite Roaming (SOTM)
The SLM-5650A modem/router now supports Satellite Roaming, allowing
automatic network transitioning between multiple Hubs and/or satellites with-
out operator intervention. The roaming feature requires the support of the
Roaming Oceanic Satellite Server (ROSS) to help process commands and infor-
mation onboard the vessel.
IGMP Multicast Routing
The SLM-5650A is capable of performing as an IGMP (Internet Group
Management Protocol) multicast router to support IP network hosts that require
management of their dynamic multicast group memberships on a given
network.