This problem was found internally. If you are a registered CCO user and you have logged in, you can view the bug details.
Some operations take too long to complete.
A test was performed on the NAM using data capture with TrafficDirector 5.6. TrafficDirector 5.3 outperformed TrafficDirector 5.6. The Cisco Test Engineer has identified that TrafficDirector 5.5.1 and 5.6 is sending out spurious requests to the NAM, causing some operations to take an extremely long time to complete. TrafficDirector 5.5.1 and 5.6 send approximately 100 requests to each port, even though the NAM responds to the first request. This problem is most apparent using TrafficDirector 5.5.1 and 5.6.