the management port at SP-A is running in half duplex mode

No .. What kind of array and what is the code level

See primus

...

The following is a Primus(R) eServer solution:

ID: emc225054
Domain: EMC1
Solution Class: 3.X Compatibility

Goal       Why do Management Port Settings 'Requested speed setting' revert to auto after management module reseated?

Fact       Product: CLARiiON CX4 series

Fact       Product: CLARiiON CX3 series

Fact       EMC Firmware: FLARE Release 29

Fact       EMC Firmware: FLARE Release 28

Fact       EMC Firmware: FLARE Release 26

Symptom    Management Port Settings "Requested speed setting" revert to auto.

Change     Customer modified the management port setting "requested speed setting" to 100 Mps/full duplex

Change     Customer removed and inserted the Management Module.

Change     Customer modified the management port setting "Requested speed setting" to 100 Mps/half duplex.

Fix        This is working as designed. Navisphere Help recommends leaving Management Port Settings set to ''auto.''

According to the Navisphere Help file:  "Requested Settings Sets the speed for the management ports. The default setting is Auto . We strongly recommend that you contact your service provider before changing these settings."

Note       Customer verified Management Port Settings from naviseccli -h <IP address> networkadmin -get -all.

Note      

Refer to solutions:

• emc211869
  
• emc205741
  

Thank you Parks

Array : Clarrion CX4-480

Flare Operating Environment : 04.28.000.5.708

Hi, How can you change it to Full duplex all articles I can find are about CX4 and solutions are not compatible with VNX ?

In Unisphere, select network settings from the settings icon at the top (near right side...).

Then set each SP from the link on the right side.

Just set the switch port to auto/auto and the SP port to Auto - it will negotiate to the correct speed and duplex

glen