We recently staged around 300 new Aruba access points for a hotel resort project. The plan was simple: plug the APs into a staging switch, let them find the controller via DHCP, rename them, move them into the right AP… Read moreStaging 300 Aruba APs That Insist on Being Instant APs
Every network has one: the old wireless controller that nobody wants to touch, but that still has to be logged into once in a while. Ours is an Alcatel-Lucent OmniAccess OAW-4650, an Aruba OEM controller with a factory certificate that… Read moreChrome Refuses the Old Controller: ERR_SSL_KEY_USAGE_INCOMPATIBLE and a socat Workaround
My MacBook Air (M3, 8 cores, 16 GB) had been noticeably sluggish for days. Fans don’t exist on this machine, so the only signals were a warm chassis, a laggy UI and a load average that never came down. A… Read morefileproviderd at 270% CPU: How Git Repos in Google Drive Broke macOS File Sync
Homebrew needs no introduction on macOS. For formulae, the classic CLI tools, brew update && brew upgrade has been working reliably for years. Casks, the GUI applications, were a different story for me: some apps got upgraded by brew upgrade,… Read moreHomebrew: Upgrading Casks and App Store Apps from the CLI
When IPsec Suddenly Becomes One-Way Behind CGNAT We recently ran into an interesting IPsec issue across three branch sites. Each branch used the same basic design: FortiGate firewall at the branch Teltonika 5G router in front of the FortiGate NAT… Read moreWhen IPsec Suddenly Becomes One-Way Behind CGNAT
Overview During an IOS XE upgrade of a three-member Cisco Catalyst 9200L stack from 17.15.03 to 17.15.06, one stack member ended up in a boot loop and eventually dropped into ROMMON. The root cause was not a corrupted IOS XE… Read moreRecovering a Cisco Catalyst 9200L Stack After a Failed IOS XE Upgrade
Fortinet has changed the first-boot experience on newer FortiGate G-series appliances: before the firewall can be fully configured, it must be registered with FortiCare. On paper that sounds harmless. In the rack, with a fresh FortiGate-200G and no predefined WAN… Read moreFortiGate Forced FortiCare Registration: What Changed and How to Get a 200G Online
If you come from the Cisco world, Huawei WLAN HA can look a little unfamiliar at first. The good news: once you stop trying to force a “dedicated HA cable for everything” mindset onto it, the design gets a lot… Read moreHuawei AirEngine WLC HA with HSB: Keeping Active/Standby Simple
I ran into an issue on a Cisco 9800 WLC after upgrading to 17.12.6a with the standard install workflow. The installation itself completed successfully, but the controller did not boot cleanly on the first reload. What happened I started the… Read moreCisco 9800: Wrong Boot Variable After Upgrade to 17.12.6a
Purpose This note describes the multicast capability of Huawei SD-WAN, its functional principle, configuration concept, and constraints. The industry standard behind this feature is NGMVPN (Next Generation Multicast VPN) — Huawei refers to the SD-WAN implementation internally as “Multicast over… Read moreSD-WAN Multicast (NGMVPN)