Newtec MDM9000 - Layer 2 VLAN Termination; Introduction

Newtec Proprietary
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R3.2_v1.0
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Feature Descriptions
MDM9000 Satellite Modem
16.17 Layer 2 VLAN Termination
16.17.1 Introduction
Virtual networks allow to transmit for instance several company networks with overlapping IP
address spaces via the same satellite hub or link.
Using L2 access VLAN (L2 forwarding) simplifies the IP configuration between the hub and the
remote sites.
Here we consider two possible ways of working with VLANs:
• The VLAN tag is forwarded towards the remote site and is terminated by the end router.
(to see how the mechanism works please refer to: Appendix-ClassificationExpressions)onpage329
• The VLAN tag is stripped off before transmission towards the remote site or the VLAN tag is
added upon receiving on the hub site.
In this section we explain the second mechanism, stripping off or adding the VLAN tag.
By doing this the remote site does not require VLAN aware devices.
In practice we create a channel and a VLAN per remote site and link these to one another. This way
the VLAN tag must not be transmitted over satellite.