Administrator Guide

When you have verified that your system meets the new requirements, press y. The W-ClearPass 6.6.0 setup
and installation begins.
Caveats, Hyper-V
This section describes caveats to be aware of with Hyper-V.
Low Network Performance on Hyper-V Due to NIC Cards
In lab conditions, we noticed that the network latency increases and throughput decreases due to certain
features in the NIC not working as expected. This affects network throughput to any OS installed on a Hyper-V
server.
In W-ClearPass, we have noticed the following symptoms when the server is handling authentications:
l Drastic increase in network latency to external servers
l Increase in RADIUS timeout packets
l Increase in RADIUS end-to-end processing of authentication requests
If you notice these symptoms with your W-ClearPass server running on Hyper-V, please consult with the NIC
vendor about compatibility issues with the Microsoft Hyper-V platform, or update to the latest driver version
which might resolve network throughput problems.
Figure 48 System Monitor, RADIUS Timeout Packets Count
Figure 49 System Monitor, Time for Full RADIUS Request Processing and Total RADIUSRequest Count
Installing or Upgrading to 6.6 on a Virtual Machine| Tech Note | 35