What is BGP? A CCIE’s End-to-End Guide to Border Gateway Protocol
BGP explained by a CCIE: how path selection really works, all 13 steps, neighbour states, timers and working configs you can paste into a...
CCIE Exam Cost 2026: Real Fees, Hidden Costs, and the Total You Should Budget
The CCIE exam costs $400 for the core plus $1,600 or $1,900 per lab attempt. Here is every Cisco fee for 2026, including the $500 reschedule...
Single Mode vs Multimode Fiber: Full Comparison
A team once ran 2km of multimode fibre between two buildings. The link never came up clean. They blamed the switches, the transceivers, even the weather. The real problem? Wrong fibre. Multimode dies long before 2km, and no amount of swapping optics fixes a physics limit. That single mistake cost them a weekend and...
Cisco Firepower Threat Defence (FTD): The Complete Guide
At 11:47 p.m., the on-call engineer at a Vancouver-based financial services firm got paged. An endpoint detection alert had fired. Someone was running scanning tools inside the network, not outside trying to break in, but already inside, moving laterally through servers they had no business touching. The attacker had been there for nearly three...
The Systems Engineering Occupation: What It Pays, Who Hires, and Why It’s Worth It
$127K. That’s the average base salary for a systems engineer in the US in 2026. Senior roles? They’re clearing $145K to $198K, sometimes more when you factor in bonuses and clearance allowances. In Canada, the average sits around $107K, with Toronto-based roles frequently landing between $120K and $140K. If you’re in IT and you...
Expedited Forwarding (EF) Explained: The DSCP 46 Guide Every Network Engineer Needs
Your VoIP deployment just went live. The routers are up, routing tables are clean, and the WAN links have plenty of headroom. But calls are choppy. Jitter is spiking. Users are already filing tickets. You’ve probably seen this. Or you will. QoS is one of those topics that makes sense when you read about...
exFAT vs NTFS vs FAT32: Which File System Should You Pick in 2026?
Pick the right format in 30 seconds with our decision table. Covers USB drives, external SSDs, bootable USB, Mac plus Windows, and the 4 GB limit...
BGP vs OSPF: When to Use Which Protocol (2026 Guide)
TL;DR: Use OSPF inside your own network for fast, automatic routing between your routers. Use BGP when connecting to the Internet, peering with another company, or running a large-scale data centre fabric. OSPF is an Interior Gateway Protocol (IGP). BGP is an Exterior Gateway Protocol (EGP). They solve different problems, and most serious networks...
MSTP Explained: Multiple Spanning Tree Protocol Guide
Multiple Spanning Tree Protocol (MSTP) maps groups of VLANs to a small number of spanning tree instances. You get RSTP-speed convergence, per-instance load balancing, and a fraction of the CPU overhead that PVST+ burns through at scale. If your network has 100+ VLANs running PVST+, you’ve got 100+ concurrent STP instances on every switch....
Application-Aware Routing in SD-WAN: How It Works (2026)
Your video call just froze. Again. Here’s the frustrating part. You’ve got three WAN links right there. But your router keeps shoving all traffic down the same MPLS tunnel. It’s like a highway with two empty lanes next to a traffic jam. That’s the problem application-aware routing solves. Application-aware routing (AAR) is the SD-WAN...
