Upgrade

Cisco IOS Upgrade -Image Failed Digital Signature Verification

This is post is to list out the IOS upgrade procedure for legacy Cisco Switches or low-end Cisco switches, it also lists out the fix if you encounter the “Image failed digital signature verification” error. Please be aware of the difference in upgrade command between Cisco legacy switches and newer 9000 series switches. For the […]

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How to fix This organization cannot be upgraded to TeamsOnly

Issue At the end of Microsoft Teams migration – Skype for Business decommissioning process, we were trying to set up the global TeamsUpgradePolicy to “TeamsOnly”, we got this error “This organization cannot be upgraded to TeamsOnly at the Tennant level because this is an on-premise deployment of Skype for Business detected in 1 or more

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How to – Juniper EX switch Virtual Chassis and JUNOS upgrade

This tutorial is to illustrate the processes to configure Juniper EX switch virtual chassis and JUNOS upgrade procedures. This is one of the most common tasks in the Juniper networking world. Environment Virtual Chassis with nonprovisoned configuration file 2. Then you can check the current vc-port configuration via show virtual-chassis vc-port, there might be ports

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