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OSPF is mostly used between a Core switch and downstream OSPF enabled devices like distribution switches, firewalls, etc. If the downstream device is connected via link aggregation to a Nexus vPC pair and vPC peer-gateway is configured, you will encounter OSPF adjacency flaps. This will not be noticed unless the OSPF adjacencies are monitored or debugged, so most engineers are not even aware that...

You know how to whistle, don’t you? Just put your lips together and blow. Well installing WSL is nearly as easy and can up your efficiency and expand your toolset.

Today we’ll be going over how to add a Cisco switch to ISE 3.0 for TACACS administration. For this configuration you’ll need an ISE PSN (Policy Service Node) node with Device Admin Services enabled and either a Cisco switch or router running IOS.

Today we are talking about 802.1X, like authenticating a device coming into a conference room.What is 802.1X ? In simple terms, it is an authentication mechanism that we leverage.

What is Zero Trust? Zero Trust is a framework and attitude towards IT security that centers on the idea that we in the IT field cannot trust anyone or any device on our network. Many systems administrators are well versed in this model. Every employee is assigned a domain joined laptop that is locked down via Group Policy. Those employees are tracked via a user identity using their AD profile...