Remote Vlan Tagging; End To End Vlan Tagging; Application Layer Network Services; Dhcp Server - Hughes HX System System Overview

Remote VLAN tagging The Remote VLAN tagging feature allows the operator to
End to End VLAN tagging End to End VLAN tagging is a feature that allows the passage of
Application layer
network services

DHCP server

DHCP relay

configure up to 8 VLAN tags on a particular satellite modem
LAN. However, the VLAN tags are not sent over the spacelink
and are inserted and stripped by the satellite modem locally.
pass the VLAN tags all the way from the satellite modem to the
hub server.
This situation can become necessary when a typical satellite
modem is connected to a LAN with multiple servers, each with
the need to communicate with a different customer intranet host
servers. These host servers are spread among multiple VLAN IDs
based on their functionality. To accomplish this, it is necessary to
use a specific VLAN id for all packets between the satellite
modem PC and the enterprise host server. Another satellite
modem PC (on the same remote) will connect with a different
VLAN ID to a different host server on the customer enterprise
network.
Situations can dictate that existing terrestrial network
infrastructure be configured to prioritize certain VLAN IDs over
others, which is why it is essential to pass the VLAN tags all the
way from the satellite modem to the hub server.
Several HX System IP features relate to satellite routers. These
capabilities are configured at the HX gateway using the Vision
UEM remote profiles feature and implemented in the satellite
router. The satellite router IP features include the following:
• DHCP server
• DHCP relay
• DNS caching
• Access Control List
• Policy Based Routing (PBR)
• VRRP
The dynamic host configuration protocol (DHCP) service
running in the satellite router manages the automatic assignment
of IP addresses to devices on the remote LAN. When enabled, the
DHCP service responds to a DHCP request by assigning an IP
address, a subnet mask, up to two domain name server (DNS) IP
addresses, and a default gateway IP address.
HX satellite routers implement a DHCP relay feature which
allows devices on remote LANs to obtain IP addresses and other
information, such as an initial bootstrap program and DNS IP
Chapter 6 • IP features
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