Gns3

Series: Learn Datacenter Networking on Your Laptop Part 1: GNS3 Foundation & Linux Networking Primer — Bridges, taps, host networking setup, your first lab Part 2: VLANs, Bonding, and Network Segregation — VLANs, NIC bonding, LACP, bridge isolation Part 3 ← You are here — iPerf3, fiber troubleshooting, Juniper switch diagnostics, throughput testing I spent last weekend debugging a link between two Juniper switches that was running at 2Gbps on a 10G interface. The fiber was plugged in, the lights were blinking, and both switches happily reported “Link is up.” Everything looked fine. Except it wasn’t. ...

Series: Learn Datacenter Networking on Your Laptop Part 1: GNS3 Foundation & Linux Networking Primer — Bridges, taps, host networking setup, your first lab Part 2 ← You are here — VLANs, NIC bonding, network segregation Part 3: iPerf3, Fiber, and Juniper — Testing Like a Pro — Throughput testing, fiber diagnostics, Juniper config Here’s a thing about real datacenter networks nobody warns you about: you’ll spend more time debugging VLANs and bonding than you will configuring routing. ...

Series: Learn Datacenter Networking on Your Laptop Part 1 ← You are here — GNS3 foundation, virtual networking mental model, bridges, taps, Linux networking across distros Part 2: VLANs, Bonding, and Network Segregation — VLANs, NIC bonding modes, LACP, bridge isolation Part 3: iPerf3, Fiber, and Juniper — Testing Your Datacenter Network Like a Pro I’ve been managing datacenter networks for a few years now. Not hyperscaler stuff — the kind where you have real switching infrastructure, multiple VLANs screaming across bonded NICs, and the constant background anxiety of wondering which unlabeled cable goes to production storage. ...