User's Manual

hwc_intro.fm
Overview of the Controller, Access Points and Convergence Software solution
Controller, Access Points and Convergence Software and your network
A31003-W1050-U100-2-7619,
March 2008
HiPath Wireless Controller, Access Points and Convergence Software V5 R1 , C20/C2400 User Guide 27
2.3.2.2 Privacy
Privacy is a mechanism that protects data over wireless and wired networks,
usually by encryption techniques.
Controller, Access Points and Convergence Software supports the Wired
Equivalent Privacy (WEP) standard common to conventional access points.
It also provides Wi-Fi Protected Access version 1 (WPA v.1) encryption, based on
Pairwise Master Key (PMK) and Temporal Key Integrity Protocol (TKIP). The
most secure encryption mechanism is WPA version 2, using Advanced
Encryption Standard (AES).
2.3.3 Virtual Network Services
Virtual Network Services (VNS) provide a versatile method of mapping wireless
networks to the topology of an existing wired network.
When you set up VNS on the HiPath Wireless Controller you are defining subnets
for groups of wireless users. The VNS definition provides the binding between
VNS IP topology configuration (Routing, DHCP policy) and the RF configuration
parameters that advertise and control network access (SSID, Privacy policy:
WEP and WPA). This technique enables policies and authentication to be applied
to the groups of wireless users on a VNS, as well as the collecting of accounting
information on user sessions that can be used for billing.
When a VNS is set up on the HiPath Wireless Controller:
• One or more Wireless APs (by radio) are associated with it
• A range of IP addresses is set aside for the HiPath Wireless Controller’s
DHCP server to assign to wireless devices
If routing protocol is enabled, the HiPath Wireless Controller advertises the VNS
as a routable network segment to the wired network and routes traffic between
the wireless devices and the wired network. The HiPath Wireless Controller C20/
C2400 also supports VLAN-bridged assignment for VNSs. This allows the
controller to directly bridge the set of wireless devices associated with a VNS
directly to a specified core VLAN. The HiPath Wireless Controller can support the
following:
• C2400 – Up to 64 VNSs
• C20 – Up to 8 VNSs
The Wireless AP radios can be assigned to each of the configured VNSs in a
system. Each Wireless AP can be the subject of 16 VNS assignments — 8 VNS
assignments per radio — which corresponds to the number of SSIDs it can
support. Once a radio has all 8 slots assigned, it is no longer eligible for further
assignment.