Proxy Arp; Vlan; V1.8.1 Release; Acquisition Mode - Comtech EF Data Vipersat SLM-5650A User Manual

P r o d u c t D e s c r i p t io n
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.
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