How Do You Get Experience in IT?
A question I often get is, how do you get experience in IT? For people trying to break into this […]
Career
ISE
Setting up Active Directory for ISE Lab
A key component of an ISE home lab is having Active Directory installed. In this post I’ll go through setting
CML
Building an ISE Homelab
One of the best ways of learning something is building a lab for it. Especially when it comes to complex
Windows
Reclaiming Disk Space from Old Windows Install
This is a quick post to describe how to reclaim disk space being used by an old Windows install. Recently,
NAT
NAT Overload Towards Specific Host
This is a quick post on how to perform NAT overload (PAT) towards a specific host only. I have an
MPLS
PMTUD in MPLS-enabled Networks
In the previous post on MSS, MSS Clamping, PMTUD, and MTU, we learned how PMTUD is performed by setting the
TCP
MSS, MSS Clamping, PMTUD, and MTU
Maximum Segment Size (MSS) and MSS clamping are concepts that can be confusing. How do they relate to the MTU
OSPF
Not All OSPF Inter-area Traffic Traverses Interfaces In Area 0
Everyone knows that OSPF is a link state protocol. Those that study also discover that OSPF behaves like distance vector
Ethernet
Ethernet History Deepdive – Why Do We Have Different Frame Types?
In my previous post Encapsulation of PDUs On Trunk Ports, I showed what happens to PDUs when you change the
OSPF
Why Are OSPF Type 5 LSAs Flooded?
I recently saw a great question on Reddit, on why Type-5 (AS-external) LSAs are flooded, in comparison to Type-3 (Summary)