Im trying to upgrade the license key on the SSM-20 module on an ASA 5520 but it keeps failing.I get an error message ' failed to update license on sensor. err Invalid License.'Im pretty sure our supplier has sent me the wrong key but what i would lik...

Hiwonder if anyone can assist me.I have a Cisco 4500 unit running IOS cat4500-entservicesk9-mz.122-54.SG.bin.Recently the box has stopped showing any cdp neighbours. All i get is this:CH-4507-01#sh cdp neiCapability Codes: R - Router, T - Trans Bridg...