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Upgrading IOS-XE firmware on a 4000 series router

Had an issue where I was not able to successfully upgrade the IOS firmware on a Cisco 4351 router.  This model of router runs IOS-XE and has some slight differences in feature set compared to legacy IOS.  For example “ip dns server” was not an available...

NetFlow setup for 3750x with C3KX-SM-10G

The Cisco 3750x switch does not support NetFlow natively, but the C3KX-SM-10G module has ASICs that support NetFlow.  With the C3KX-SM-10G module, NetFlow can only be run on the 4 interfaces in the module — this does not add NetFlow on the entire switch. It is...

Adding PoE to a Cisco 890 Series Router

(C891FW-A-K9) In order to add PoE to an 891 router, the datasheet says you need “800-IL-PM-4 with 125W PSU.”  I had to use the Cisco Commerce Workspace to generate a config starting with the 800-IL-PM-4= part number and then added the 125W power supply...