We had one of our CSS devices reboot unexpectedly. When a CSS reboots unexpectedly, it usually leaves behind some clues about why it crashed.
Cisco 3750x License Install
The first thing you want to do is to go to Cisco’s website and get your license file emailed to you by filling out their form using your PAK number. Once you get the email with the LIC file, you will then have to copy that file to your switch.
DNS Troubleshooting with NSLOOKUP for Windows and MAC
NSLOOKUP is a powerful tool to help troubleshoot DNS. I will give some examples below. The good news is, the commands are the same for both Operating Systems.
Avaya & Cisco QoS Standards and Guidelines for VoIP
Objective The purpose of this post is to clearly define standards I use for QoS in a Cisco and Avaya VoIP environment. Even though I’m using Cisco, these standards could be implemented on other vendors network equipment.
Apple OSX Buit-In VPN Client Configuration for Cisco VPN
If you have a new MAC or if your are running 10.7, chances are you are running 64-bit. The problem is that there is no Cisco VPN client for 64-bit. So the best way around this is to use the VPN client that comes with your MAC.