Tagged: HA

3 May 2026 SD-WAN Arista VeloCloud Networking HA OSPF Design

Designing an Arista SD-WAN Spoke with Enhanced HA, Dual DIA, and OSPF

Building a resilient Arista (formerly VeloCloud) SD-WAN spoke: two Edges in Enhanced HA, two DIA circuits wired the optimal way, a multi-VLAN LAN, OSPF for route exchange, and the caveats that bite in practice.
28 April 2026 Fortinet NSE5 FortiManager HA High Availability FCP Certification

NSE5 Part 3: High Availability

Part 3 of the NSE5 study series — covers the FortiManager HA cluster: primary and secondary roles, the sync mechanics, monitor IPs, manual vs automatic failover, and what to do when the cluster splits.
28 April 2026 Linux DNS Pi-hole Raspberry Pi Networking HA Guide

Resilient DNS at Home: Building an HA Pi-hole Pair on Raspberry Pi

A complete walkthrough for installing Pi-hole on a Raspberry Pi running current Raspbian, then turning a single box into a highly available pair using keepalived and Orbital Sync — with the config examples and show commands you'll actually use.
25 April 2026 Fortinet NSE4 FortiGate HA High Availability FGCP Networking Certification

NSE4 Part 10: High Availability

Part 10 — the final post in the NSE4 study series. Covers FGCP, active-passive vs active-active, heartbeat and monitor interfaces, session synchronisation, failover behaviour, and the diagnostic output you'll be asked to interpret.