Blogs

ORv3 Compliant QFX Series Switches

By Ridha Hamidi posted 3 days ago
HPE–Juniper Networks QFX Series switch platforms support ORv3-compliant data center deployments, aligning with Open Compute Project (OCP) Open Rack Version 3 (ORv3) specifications. Compliance is achieved through mechanical and electrical adaptations to the QFX platform, enabling integration into ORv3 rack infrastructure. Introduction The Open Compute Project (OCP) is an industry-wide collaborative initiative focused on optimizing the design, efficiency, and scalability of hyperscale data center and IT infrastructure. Its scope spans server hardware, rack and power architecture, storage systems, energy efficiency, and open networking platforms. This ...

AI-Driven Brownfield Migration to Juniper Routing Director

By Weiguo Lu posted 4 days ago
Introduction — The Scale Problem Network service providers don't build their networks one router at a time — they scale them. The customer we worked with during this Professional Services engagement had hundreds of PE routers and, on top of them, thousands of VPN service instances . Every single one of those services had been hand-crafted directly on the Junos CLI. They worked. Traffic flowed. Customers were happy. But there was a catch: all of it lived entirely outside any controller. No single source of truth. No lifecycle automation. No closed-loop assurance. Every change was a keyboard operation, every audit was a diff exercise, and every new service ...

Elevate and Airheads Community are merging

By lydia right posted 4 days ago
We’re pleased to share an exciting update: the Juniper Elevate Community will combine with the HPE Airheads Community, creating one unified platform for networking professionals to connect, learn, and collaborate across a broader range of solutions. Both communities were built as online spaces for technical networking professionals, with a by engineers, for engineers approach at the center. That means peer-to-peer problem solving, practical product expertise, real-world deployment guidance, and trusted technical conversations will continue to be the foundation of the community experience. ‌ What to Expect in the Transition During this transition, we ...

Control and Data Plane Traffic Capture on QFX Switches

By Ridha Hamidi posted 9 days ago
Packet capture on QFX switches enables visibility into control-plane and data-plane traffic for efficient troubleshooting, traffic analysis, and network diagnostics. Flexible capture methods allow packets to be mirrored and analyzed, providing deeper insight into switch behavior and forwarding operations. Introduction Network troubleshooting frequently presents the challenge of sorting out discrepancies between control-plane and data-plane reported status and error conditions. For example, the control plane may report a fully healthy state across all interfaces, while the data plane silently drops traffic, causing application failures. In such scenarios, ...

VXLANsec: Securing Modern Data Centers, One Tunnel at a Time

By Riti Sharma posted 10 days ago
Introduction Modern data center networks are increasingly built around overlay technologies that enable scalability, workload mobility, and efficient network segmentation. VXLAN has become a widely adopted solution for extending Layer 2 connectivity across Layer 3 infrastructures, serving as a foundational technology in many EVPN-based data center deployments. As organizations continue to expand cloud and distributed networking environments, ensuring secure communication across these overlay networks has become an important design consideration. To address this need, the QFX5130-48CM introduces VXLANsec support within the QFX switching portfolio, ...

Precision Timing in Modern Data Center

By ssatheesh posted 14 days ago
Introduction With the rapid transition from traditional workloads to AI applications, data centers are undergoing a fundamental architectural change. Traditional compute-centric systems are unable to match the requirements of modern AI applications that need huge data mobility, parallel processing, and ultra-low latency. This has led to the growth of high-speed, interconnect fabrics that focus on bandwidth and efficiency, enabling smooth communication across thousands of compute nodes like GPUs, TPUs and other accelerators. GPUs are the brain of any current AI Clusters, but it is the precision timing that is the heartbeat synchronizing every ...

Next Generation Port Extender (NGPE): The Right Interface Speed on the Right Box, for the AI Era

By Pankaj Kumar posted 14 days ago
Why we need this NGPE Solution We’re in the middle of a bandwidth step-change. AI workloads — training clusters, inference pipelines, and the east-west traffic they generate — are driving bandwidth utilization to levels the industry hasn’t seen before. To keep up, network platforms are moving to ever-higher-capacity interfaces: 100G and 400G today, 800G now shipping, and the industry already moving toward 1.6T Ethernet. Those interfaces are built on a new generation of high-throughput forwarding silicon. A modern aggregation router is designed, end to end, to drive high-speed ports at terabits per second — exactly what you want facing the core and the high-bandwidth ...

Stitching Two Worlds: IPv4 L3VPN Inter‑AS (Option C) over an IPv6‑Only SRv6 uSID Core and Metro MPLS

By Pankaj Kumar posted 15 days ago
Introduction In L3VPN‑over‑SRv6 design, the metros and the core speak the same transport — IPv6 with Segment Routing. Production networks are rarely that tidy. Most operators run large, mature SR‑MPLS metros and want to slide a modern SRv6 core underneath them — without a flag day and without rebuilding the metros. This post shows how to carry a customer IPv4 L3VPN end‑to‑end across two SR‑MPLS metros that are glued together by an IPv6‑only SRv6 uSID core, using MPLS‑over‑SRv6 (Mo6) transport interworking and Inter‑AS Option C. The two border routers do all the heavy lifting: they encapsulate MPLS into SRv6 on the way in (H.Encaps) and decapsulate SRv6 ...

Connecting AI: The Network Behind Every Inference

By Cherishma Potluri posted 25 days ago
Introduction When people think about Artificial Intelligence (AI), they usually think about models, GPUs, and applications. They picture chatbots answering questions, copilots generating content, recommendation engines personalizing experiences, or image generators creating artwork. What often goes unnoticed is the network... Every AI interaction begins and ends with a network transaction. Before a model can generate an answer, a request must travel through access networks, service provider infrastructure, transport networks, data centers, storage systems, and compute platforms. Once the response is generated, it must make the journey back to ...

BNG Chassis Redundancy with DHCP Active Lease Query and EVPN VPWS

By Sathish Eruvala posted 26 days ago
When a Broadband Network Gateway goes down, thousands of subscribers lose connectivity. Traditional BNG redundancy solutions often result in subscriber session loss, requiring DHCP reinitialization and leading to service disruption. Active Lease Query (ALQ) solves this challenge by synchronizing DHCP lease states between BNG peers in real time. When the active BNG fails, the standby BNG already has all subscribers provisioned and takes over seamlessly, with no DHCP re-establishment required. In this article, we validate ALQ-based chassis redundancy on MX480 BNGs with MPC10E TRIO-based line cards using EVPN-VPWS multihoming to demonstrate scalable and ...

Secure BGP with ASPA: Preventing and fixing route leaks

By Anton Elita posted 29 days ago
BGP runs on trust, and route leaks and hijacks are what happen when that trust is misplaced. This article shows how three complementary mechanisms close the gap — BGP Roles with Only-To-Customer attribute prevent and detect leaks several hops from the source, and - if the leak already happened - RPKI Route Origin Authorization (ROA) helps validate the origin AS, and Autonomous System Provider Authorization (ASPA) confirms the full AS PATH is valley-free. Introduction Any BGP speaker can advertise a syntactically valid route for almost any prefix. Commercial relationships between autonomous systems, such as customer, provider, and peer, are supposed ...

From SRX Chassis Cluster to MNHA – Configurations side by side

By LaurentP posted 29 days ago
After the techpost “SRX clustering: from Chassis Cluster to MultiNode High Availability”, let’s deep dive into their respective configuration side by side. Below a simplified diagram showing the same architecture with an SRX pair segmenting 2 networks: In this series, also mention the other techposts from various people: Multi-Node High Availability Basics (from Steven Jacques) Hybrid MNHA with eBGP (from James Rathburn) SRX clustering: from Chassis Cluster to MultiNode High Availability (from Laurent Paumelle) MNHA, IPSec and Multiple Routing Instances (from James Rathburn) DHCP on MNHA: Back to Basics ...

Industry First 1.6T Liquid Cooled Switch: QFX5250-64OE-L

By Riti Sharma posted 06-17-2026
Extending HPE Juniper’s innovation leadership from 800G to 1.6TbE AI data center fabrics. HPE Juniper Networking has started shipping the industry's first 102.4 Tbps data center switch, featuring 64 x 1.6 Tbps OSFP-RHS ports, compliance with the Open Compute ORV3 standard, and 100% liquid-cooling efficiency, by using cold plates directly attached to the ASIC, the CPU, the DC-DC Converter, and the 64 x OSFP-RHS transceivers. This paper provides highlights of this switch. Introduction AI Data Center infrastructure puts unique demands on the network. Traffic between servers is high volume, latency must remain consistent, and power consumption ...

250 Articles on TechPost

By Nicolas Fevrier posted 05-29-2026
Almost 250 technical articles published on the TechPost platform, let's try to summarize it in a single page with links to all these posts with a short abstract. Introduction Juniper Networks, now HPE Juniper Networking, is, at its very foundation, a technological company. When we opened the TechPost platform with the motto " Byte-Sized Articles on Juniper Solutions by Network Engineers, for Network Engineers", we wanted to create a place where Juniper engineers could share their knowledge and experience on technologies, products and protocols with no marketing fluff. To date, we published close to 250 articles and it's now becoming challenging ...

Juniper Routers and Switches Power Observability

By Nicolas Fevrier posted 05-29-2026
Your routers and switches display power usage counters, but what are they representing and can you trust them? Let’s try to answer these questions today. Introduction Different initiatives around power are ongoing, from characterization (power calculators) to network-level power optimization, but today we will focus on the observability part: what can we monitor and can we trust these numbers. Figure 1: HPE Juniper Networking Initiatives around Energy TL;DR “ It's an awfully long article, I’m a busy engineer and don’t have time for all the details, just gimme the results please... ” Ok, ok… I admit it's a very long article, ...

SRX MNHA: VRRP

By Karel Hendrych posted 05-28-2026
This TechPost describes an alternative solution to the native SRX Multi Node High Availability (MNHA) Switching/Hybrid Layer 2 (L2) Virtual IP address (VIP) mechanisms using Virtual Router Redundancy Protocol (VRRP). MNHA combined with VRRP can offer more flexibility and speed up convergence in some failure scenarios. The solution addresses current limitations of the native MNHA L2 VIP mechanism compared with the traditional SRX chassis-cluster technology. The additional configuration should be seen as a worthwhile investment for the flexibility and better convergence times, albeit making the configuration slightly more complex. Introduction Firewall ...