In this guide, I will cover the basic setup to enable a Cisco router to connect to a VDSL2 / FTTC circuit. I will cover the full setup of the router including enabling SSH and enabling DHCP. If you need …
Problem: I recently had to use some none Cisco 10Gbs copper SFP’s in a 3850 stack. On inserting the SFP’s the interfaces went into err-disabled status and looking in the log I was getting the message “Warning: SFP gbic-security check …
Have you ever looked at a comms cabinet run of Cisco switches only to find that ever interface is patched, some of them have no link lights and you don’t know which ones can be unpatched. The below steps are …
The below details how to recover a Cisco device such as a switch or router if you have forgotten or don’t have the password. You will need physical access to the console port WARNING: By doing this you may loose …
If when you run show logging or try to view the debug logs on a Cisco IOS device the date and time is not displayed and instead you get something like the below, here is the solution. 6w4d: %ETHCNTR-3-LOOP_BACK_DETECTED: Loop-back …
The ARP table on a Cisco device is a list of learned IP address and what MAC addresses they resolve to, this is required as generally switches work at layer 2 with MAC addresses not IP Address’s. Problem: If you …
If like me you what to see the output of a debug command via a SSH connection, follow the below steps 1) Enable Virtual Terminal Logging SSH into the router and get yourself into privileged (Enable) mode and enter the command …
Before you can remove a directory on Cisco devices the directory must be empty, the below steps will show you how to delete all of the files and folders the directory contains. Cisco switches often store their IOS in a …
If you find yourself in ROMMON mode having done something silly like wiping the flash or if there was a problem updating the IOS then the below steps will go through how to copy a replacement image from TFTP to …