Stackwise Virtual “Invalid Input Detected” Error and How to Configure Stacking on Cisco 9500

This post is to demonstrate the process to fix the “Invalid Input Detected” error when issuing “stackwise-virutal” command on Cisco switches, as well as document basic StackWise virtual configuration using two Cisco Catalyst 9500. Error Fix StackWise Virtual error You will get this error because you don’t have the Network Advantage license purchased, you may

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How to Migrate Microsoft Certificate Authority service to Server 2022

This post is to demonstrate the process to migrate Microsoft Certificate Authority Service (Enterprise Root CA) to Windows Server 2022. Environment Source: Windows Server 2016 Standard with Certificate Authority roles installed Destination: Windows Server 2022 Standard Reason for the migration: Server refreshment Migration Context: Source and Destination server names are different, for Example, oldCA.ictfella.com to

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How to Configure Zscaler GRE Tunnel with Cisco ISR for Internet Security

This post is to illustrate the process of configuring the Zscaler GRE tunnel with Cisco ISR for cloud internet security. The main goal of this configuration is to set up the GRE tunnel and send all internet traffic via the tunnel for web filtering, when Tunnel is not available, traffic falls back to the standard

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How to Migrate Ubiquiti Unifi to Cisco Meraki Wireless

This post is to list out the procedures of migrating Ubiquiti Unifi to Cisco Meraki wireless, this includes the common configuration of WLAN and SSID, Radius configuration with Microsoft NPS on Server 2022, and troubleshooting tips when you experience problems. For detailed Microsoft NPS installation and configuration, please check the previous posts: How to Migrate

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How to Migrate DHCP Service from Cisco Core Switch to Server 2022

This post is to illustrate the process to migrate DHCP Service from Cisco Core Switch to Window Server 2022, it includes the Cisco IP Phone DHCP option 150 and Option 66. Environment Source: Cisco Catalyst Layer 3 switch Destination: Window Server 2022 Active Directory Domain Controller IP Phone DHCP options were configured on the Core

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How to Migrate DHCP Service from Server 2016 to Server 2022

This post is to document the process to migrate DHCP service from Windows Server 2016 to Windows Server 2022, as well as the related DHCP Failover and DHCP Forwarding/IP-helper configuration. Microsoft’s DHCP services haven’t changed much in the past 20 years, it would be a similar procedure if you are using the old version such

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