WWeiwei Zhang25m ago · 7 min readHow to Design an 800G InfiniBand XDR Network for Large-Scale GPU ClustersBuilding a large GPU cluster involves more than connecting servers to high-speed switches. Distributed AI training depends on fast, predictable communication between GPUs, and the network must maintaiaicplight.hashnode.dev
IInstaTunnel1h ago · 15 min readLocal-First AI Agent Testing: How to Expose Local MCP Servers Safely Without Compromising Host SecurityIntroduction: Local Tools, Remote Clients AI engineering has moved a lot of work onto developer machines. Agents call local tools, read local files, and query local databases through the Model Contextinstatunnel.hashnode.dev
IIPYE6h ago · 6 min readARP and NDP Spoofing Defenses: DHCP Snooping, DAI, RA Guard, and What Hosts Can DoDisclosure up front: I run IPYE, a company that leases IP space. It gets one short paragraph at the end; the rest is plain networking. ARP (IPv4) and Neighbor Discovery (IPv6) were designed for trusteipye-com.hashnode.dev
IIPYE6h ago · 6 min readSNMP vs Streaming Telemetry for Small Networks: What to Collect and HowDisclosure up front: I run IPYE, a company that leases IP space. It gets one short paragraph at the end; the rest is plain networking. Monitoring a network means getting numbers off devices: interfaceipye-com.hashnode.dev
IIPYE7h ago · 6 min readVXLAN and EVPN Basics: An MPLS-Free Way to Stretch Layer 2 Across Routed NetworksDisclosure up front: I run IPYE, a company that leases IP space. It gets one short paragraph at the end; the rest is plain networking. Sometimes two servers in different racks, or different sites, neeipye-com.hashnode.dev
IIPYE7h ago · 6 min readiBGP vs eBGP: Next-Hop-Self, Loopback Peering, and Why iBGP Needs a Full MeshDisclosure up front: I run IPYE, a company that leases IP space. It gets one short paragraph at the end; the rest is plain networking. When you run a BGP session to a router in a different AS, that isipye-com.hashnode.dev
IIPYE8h ago · 5 min readIPv6 in Cloud VMs: What You Actually Get, and Why the /64 MattersDisclosure up front: I run IPYE, a company that leases IP space. It gets one short paragraph at the end; the rest is plain networking. When you enable IPv6 on a cloud or VPS instance, the result varieipye-com.hashnode.dev
IIPYE8h ago · 5 min readLinux sysctls for IPv6 Servers: The Settings That Matter and the Traps Around ThemDisclosure up front: I run IPYE, a company that leases IP space. It gets one short paragraph at the end; the rest is plain networking. Linux IPv6 behaviour is controlled by a small set of sysctls undeipye-com.hashnode.dev
IIPYE8h ago · 6 min readIPv6 Transition Mechanisms Overview: Dual-Stack, 6rd, DS-Lite, MAP, and 464XLATDisclosure up front: I run IPYE, a company that leases IP space. It gets one short paragraph at the end; the rest is plain networking. "IPv6 transition" is not one technology. It is a family of mechanipye-com.hashnode.dev
IIPYE13h ago · 6 min readBGP Communities Explained: Well-Known Communities, Large Communities (RFC 8092), and Traffic Engineering for a Small ASNDisclosure up front: I run IPYE, a company that leases IP space. It gets one short paragraph at the end; the rest is plain networking. A BGP community is a tag attached to a route. The tag does nothin1ipye-com.hashnode.dev
