User's Manual Part 1

Introduction Hardware Installation Guide
1-16 Airspan Networks Ltd. 02030311-05
1.4.4. Traffic Engineering in Multi-Tenant Application
Airspan’s WipLL system provides high-speed wireless broadband (e.g., Internet)
access for multiple-tenant units (MTU). WipLL provides a dedicated high-speed
connection to the building, and then distributes that bandwidth among the tenants,
providing them with a private, secure connection.
The WipLL system provides traffic engineering in MTU applications in networks
that connect to MPLS, ATM, or Frame Relay backbones. The WipLL hardware
responsible for providing MTU solutions is the SDA-4S/VLtag Ethernet switch.
SDA-4S/VLtag assigns a different VLAN ID (fixed) to traffic from each of its four
ports. WipLL’s SPR converts these four VLAN IDs, tagged by SDA-4S/VLtag, to
four VLAN IDs configured by WipLL’s NMS (WipManage). SPR performs this tag
conversion before sending traffic to the air, and when receiving traffic from the air.
This VLAN conversion is applicable only when SPR is used as a transparent bridge.
Figure 1-8 shows an example of how MTU works in an ATM environment.