I assume you're using CV to show the GUI of the MGX. check your snmp RW community string and make sure they are set to POPEYE. This happened to me on my RPM cards. I just added the POPEYE comm. string on all my RPMs and I was able to see the back car...

If you can reach the device thru a ping. Then Open the Campus Manager, try to right-click the device then select "Rediscover Device". This should do the trick.For unknown devices, check if you have added the device package. Or the device may not be s...