Cannot add new management access profile

Hello:

I am hoping someone can help me on a strange issue.  I am trying to Cacti to poll my PowerConnect 6248.  However, I am getting the following errors in the PowerConnect log:

<189> OCT 24 18:48:52 172.17.0.10-1 TRAPMGR[152308912]: traputil.c(611) 1315892 %% Management ACL violation on SNMP from 172.17.xxx.xxx


Since it mentions Management ACL violation, so I checked how the access list is configured:

switch-d1-2#show management access-list

default
-------
permit ip-source 172.17.0.0 mask 255.255.248.0 service ssh priority 10
permit ip-source 172.17.0.0 mask 255.255.248.0 service http priority 20
! (Note: all other access implicitly denied)

switch-d1-2#show management access-class

Management access-class is enabled, using access list default.



I thought, I need to add "permit ip-source 172.17.0.0 mask 255.255.248.0 service snmp priority 30" in order for SNMP to work.  But the switch told me "default" is the active profile, I have to disable it before it can be modified.


I tried to create a new profile called "newlist" with the command:

switch-d1-2(config)#management access-list newlist

Cannot create another Management Access Control Access List. List "default" is already created.



The switch said "default" is already created.  Now I am stuck.  Since I cannot create a new profile, I cannot modify the existing active profile "default".  I am also afraid to deactivate the current "default" profile because I think that will lock me out of the switch.  I also tried the web interface of the switch.  After clicked on Add Profile under System -> Management Seacurity -> Access Profile.  I cannot enter anything in the Access Profile Name box.  The box is grey out.  

The problem is the switch is located half way around the world.  It is not possible for me to get a console connection to the switch via serial port.

Can anyone tell me what did I do wrong or how to add a new profile?

Thanks

Eric