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Avaya LAN switching products
Figure 44: Avaya VSU 1000
VSU gateways are dedicated, hardware-based VPN gateways that overlay remote access and
site-to-site VPN and firewall services on an existing enterprise network. VSUs provide all the
benefits of VPNs without creating a performance bottleneck that slows down the network. Since
all VPN services integrate easily and transparently into an existing enterprise network,
customers enjoy easy access to network resources, which translates to increased productivity,
and improved business efficiency. VSUs employ the strong two-factor authentication, data
integrity and confidentiality services offered by IPSec, using either digital certificates or
pre-shared secrets. VSUs also offer extended authentication mechanisms for remote users.
Unlike firewall or router-based VPN solutions, VSU gateways are designed specifically to
handle high-bandwidth VPN traffic, using a dedicated, high-performance IPSec
packet-processing engine and real-time data compression. They offer wire-speed performance
that ranges from 16 Mbps to 100 Mbps for 3DES-encrypted IPSec traffic, and they can bridge at
even higher speeds with non-VPN traffic. VSUs operating by default in bridge mode, and
seamlessly layer into the network behind an access router, or in parallel with an existing firewall.
The VSU Series of VPN Gateways consists of 6 models:
The VSU 5 product family (VSU 5 Gateway and VSU 5X Gateway) for small branch offices
and home telecommuter offices
The VSU 100 Gateway for small and medium businesses
The VSU 2000 Gateway for branch offices
The VSU 5000 Gateway, the VSU 7500 Gateway, and the Avaya SG208 Security Gateway
for large enterprises and managed data service providers
Note:
The Avaya SG208 Security Gateway replaced the VSU 10000 in 2003.
Note:
VSUs are centrally administered and configured using the VPNmanager® policy-based
management application. They support remote access services with the VPNremote® desktop
VPN client software.
VSU Gateways provide powerful levels of performance, manageability, and scalability. Whether
managing thousands of remote access users, or delivering Voice over IP with service level
agreements, networks can perform better, faster, and more reliably.
122 Avaya Application Solutions IP Telephony Deployment Guide
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