Cisco Cisco StadiumVision Director Manuale Di Manutenzione
© 2011 Cisco Systems, Inc. All rights reserved.
Page 82 of 94
Chapter 5 Troubleshooting
This chapter provides basic troubleshooting information for resolving problems you
may encounter with DMPs and the attached TVs.
may encounter with DMPs and the attached TVs.
DMP POE Issue
With early versions of the DMP 4310G, there is an issue with the negotiation of the
correct PoE wattage. The root cause is believed to be that the switch and the DMP-
4310 fail to consistently negotiate the correct power class during the (optional)
power class negotiation. In some cases, the switch believes that the DMP can
operate at a lower power class then the DMP actually requires, resulting in the DMP
failing to complete boot up.
correct PoE wattage. The root cause is believed to be that the switch and the DMP-
4310 fail to consistently negotiate the correct power class during the (optional)
power class negotiation. In some cases, the switch believes that the DMP can
operate at a lower power class then the DMP actually requires, resulting in the DMP
failing to complete boot up.
Correction of this problem required a hardware change. USI executed an
engineering change to the DMP 4310G in response to this issue. DMP 4310Gs with
serial numbers USI
engineering change to the DMP 4310G in response to this issue. DMP 4310Gs with
serial numbers USI
1434
xxxx or greater have this engineering change and should
not be subject to this issue. DMP 4310Gs with serial numbers less than
USI
USI
1434
xxxx may be subject to this issue, and should follow the suggested
workaround.
The serial number is located on the back and can only be verified through visual
inspection.
inspection.