Last week, after I upgraded an ISR4K to version 17.12.64, we encountered an issue where, after entering the password while SSH to the router, i received the error below. There was not much information specific to Cisco about why this occurred. However, there was generic information on the internet regarding this error, which did not…
Category: Networking
Perpetual PoE and Fast PoE
The number of endpoints using PoE has grown significantly. PoE is an IEEE standard that delivers power to devices via an RJ45 cable, eliminating the need for a separate power cable. This reduces the cabling needed for device connections. However, have you considered the issue of rebooting the switch causing all powered devices (PDs) to…
Understanding Cisco Serial Numbers
The serial number of a Cisco device tells you when and where it was made. It has this format: LLLYYWWXXXX. LLL is the location code, YY is the year code, WW is the week code, and XXXX is a unique identifier.YY is the year code, which is the number of years since 1996. Here are…
File System Check and Repair for Cisco IOS
The customer was attempting to add a new VLAN, but it was not appearing on a couple of the switches. The IT team approached us, suggesting that we hold the WIFI migration as they needed to replace the switch due to issues with Flash. They were unable to see the files in the flash when…
Move to Type 9 password
Its highly recommended to replace your type 5 and 7 passwords with type 9 passwords. Many of us are aware that type 5 and type 7 passwords can be decrypted using online tools but many still not. Todays blog is all about configuring type 9 password. You can try decrypting type 5 and 7 password…
CRAZY NETWORKING 