TechPost

TechPost

Byte-Sized Articles on Juniper Solutions by Network Engineers, for Network Engineers

Navigating the Shadows of Dark Fiber Connectivity

Juniper’s Converged Optical Routing Architecture – Unamplified Links. Explore the solution for High-Capacity Transport using 400G OpenZR+ Optics. ...

SRv6 Observability

How can we monitor the SRv6 data plane, and collect statistics on the SRv6 SRH and tunnels with IPFIX option 315 / IMON? Introduction ...

SRX4600 CGN Configuration Breakdown

Junos configuration details and KPIs of a real-life SRX4600 CGN deployment for an operator serving fixed customers. The SRX has been used as ...

L3VPN to Global RIB Leaking

Leak remote L3VPN routes to the global internet table or other VRFs is now possible with the introduction of the vpn-global-import feature coming ...

Trio 6 Packet Walkthrough

A transit packet walkthrough inside an MX Series Trio 6 ASIC, with all the internal details on the different memory and components involved in the ...

Fast Lookup Tuple: an Innovative Filtering Feature

An innovative filtering solution for IPv4 traffic on MX Series, developed to handle five tuples matching criteria at scale. The MX platform ...

From QFX5100 to QFX5120

Explore the software and hardware differences you will encounter regarding switch connectivity when transitioning from the end-of-life QFX5100-48S ...

Micro-Segmentation in DC with Apstra and Junos

Discover how to implement micro-segmentation in your data center using Juniper Apstra and VXLAN Group-Based Policy. This comprehensive guide walks ...

BIER Overlay

The series is composed of the following posts: Introduction to BIER and BIER Underlay BIER Table Lookup BIER Overlay (present ...

Secure Virtual Cell Site Router Solution with JCNR and cSRX

A secure virtual cell site router (CSR + SecGW) functionality using Juniper Cloud Native Router or JCNR and Containerized SRX or cSRX so that customers ...

BIER Table Lookup

Second part of the 3-article series on BIER, detailing how is performed the lookup in the different BIER Tables. The series is composed of ...

SRX AutoVPN / PSK with Linux strongSwan

An example of SRX AutoVPN functionality with Pre-Shared Keys in 3rd party mode; specifically with Linux/strongSwan spokes. While PKI-based ...

BGP Minimum ECMP

BGP Minimum ECMP is a new feature aiming at improving resiliency within DC networks. This article has been co-written by ...

Selective Dynamic Load Balancing

A new innovative feature called Selective DLB (Dynamic Load Balancing), improving RDMA traffic ECMP. This article has been ...

BIER Introduction and Underlay

First part of the 3-article series on BIER, discussing fundamental concepts and BIER underlay. The series is composed of the following posts: ...

The Evolution of Network Security

A primer/survey for networking and cyber security enthusiasts interested in the evolution of this field. This article was initially published ...

MAP-T with Junos

Junos OS 23.4R1 introduces Mapping of Address and Port using Translation (MAP-T) as an adaptive service on Juniper MX Series routers equipped with ...

Junos Symmetrical Load Balancing

Efficient stateless load-balancing on Trio-based routers, offering optimal performance and reliability. Introduction Junos ...

Scalable BGP Route-Reflector

BGP Route-Reflector is part of many networks, serving PE routers with reachability information. For this critical role, it’s important to have a ...

Flexible Memory in Express5

Express5 fungible shared memory architecture provides the foundation for a flexible memory scheme which increases scale and efficiency of memory ...

FIB Install Rate in PTX Express5

PTX10002-36QDD is the first router equipped with the new Juniper Express5 packet forwarding engine, a new deep-buffer 28.8Tbps package introducing ...

Juniper BNG CUPS Address Pool Management

Another innovation for CUPS that enables unified Address Pool Management across CUPS controller(s) and Integrated BNGs. This use case simplifies ...

Juniper BNG CUPS Smart Load Balancing with High Availability

A Juniper BNG CUPS use-case that combines Smart Subscriber Load Balancing and High Availability Hot or Warm Standby across a group of User Planes ...

SRX EVPN/VXLAN T5 oIPSEC

A practical yet simple demonstration of the SRX EVPN/VXLAN Type 5 ip-prefix-routes feature and related firewall policy processing across multiple ...

Juniper BNG CUPS Hitless User Plane Maintenance

A Juniper BNG CUPS use-case that enables hitless maintenance for the user planes based on Broadband Forum TR-459 Issue 2. It improves the subscriber ...

BGP Link-Bandwidth with JunOS

The BGP Link-Bandwidth extension introduces an improvement to the BGP multipath, providing the ability to convey port speeds and propagate this ...

Juniper BNG CUPS Architecture

Juniper BNG CUPS (Control and User Plane Separation) is an emerging broadband architecture for control plane and user plane separation compliant ...

Introduction to Metro Ethernet Business Services Validated Design

Introducing our latest Juniper Validated Design (JVD), addressing Metro Ethernet Business Services (EBS) with Juniper MX Series, ACX Series, and ...

EANTC BIER InterOp Testing on PTX10002-36QDD

BIER Interoperability testing verified between PTX10002-36QDD and other vendors during the EANTC 2024. Introduction ...

BIER + MVPN in PTX Express 5

High-level functionality description of BIER as MVPN provider tunnels in the upcoming release of PTX Express 5. Introduction In Cheers! ...

Introducing the ACX7024X

What does differentiate the ACX7024X from the ACX7024 devices? In this short article, we will explain the differences and the motivation behind ...

vSRX on mini-PC with Linux/KVM

Using Juniper vSRX on hardware with constrained resources, typically a mini-PC serving as flexible Internet gateway. Those are lately very popular ...

SRv6 in PTX Express 5

PTX Express 5 ASIC has full support for SRv6 with up to 8 carrier segment identifiers (SIDs) in a packet. That translates to 48 micro-SIDs (uSIDs), ...

FIB Scale in Express5

Express5 has leap frogged in terms of Route scale, thanks to a novel approach in implementing the route table memory. ...

Flex Offset Filters in Express5

Filter in Express5 supports Flex Key match on any field in the first 128 bytes of the packet. Using software defined templates, firewall term matches ...

Flexible Packet Processing Pipelines

High-level overview of packet processing, exploring the evolution of throughput demands for these processing units, and discussing various methods ...

OpenJTS – Network Observability with Streaming Telemetry

Introduction In this article, we’ll present a new open-source tool called OpenJTS (Juniper Telemetry Stack). Designed for effortless adoption, ...

SP-style Config in Apstra Freeform for VLAN Overlap Use-Cases

In high multi-tenant environments such as Service Providers, Hosting Providers, or just large enterprises, having to deal with multiple internal ...

Introducing PTX10002-36QDD

The new Juniper PTX10002-36QDD is here. It’s our first 800GigabitEthernet, deep-buffer, high-scale, router in the market, powered by Express 5. ...

Express 5 Overview

Express 5 is Juniper's new ASIC for service providers and cloud networks, delivering 2x power efficiency, enhanced traffic insights, hardware-based ...

Introduction to Apstra Flow Data

With network flow monitoring, you can troubleshoot application issues in a DC fabric with distributed, cloud-native, virtualized, and containerized ...

Everything You Always Wanted to Know about ACX7000

The ACX7000 family is growing fast. Today, we try a different approach to present this update of the ACX7000 portfolio. ...

From sFlow to IMON Flow Sampling on MX10K Platforms

A Deepdive on sFlow and IMON/IPFIX315 on MX Routers. ...

Operating MX/SRX Scale-Out System - Bulk Junos Config Changes

A minimalistic tool for bulk config changes in the scale-out system beyond options available in Auto-FBF CLI Introduction This TechPost is ...

LLM Inference - Hw-Sw Optimizations

Details of LLM inference workflow, how it differs from training, the many hardware/software optimizations that go into making inference efficient, ...

Apstra Day 2: Generic Systems

It is often stated that most network outages occur as a result of changes having been made to the system. There have been many notable examples ...

Using Junos SNMP utility MIB on Juniper SRX

Although good old Junos SNMP MIB is very rich on every platform, occasionally some specific stats could have been handy. For example, number of ...

JCNR for Equinix Metal

JCNR brings a lot of value by providing seamless connectivity between workloads across locations, public cloud boundaries, and workload form-factor, ...

Operating 1Tbps MX304/SRX4600 Firewall Scale-Out System

Focusing on SRX firewall – the scaled out device - operational aspects in terms of removing device from service and bringing it back. Introduction ...

ACX7000 Hardware Profiles

An overview of the different hardware profiles available on the ACX7000 Sries, and what is changing in the latest Junos releases. ...

Upgrading Device Operating Systems with Apstra

Juniper Apstra supports Network Operating System (NOS) Upgrades for managed switches, allowing you to upgrade devices directly from the Apstra Server ...

Packets Lost in Transit?

Troubleshooting transit packet drops is not the easiest task for a network engineer. Sometimes, packets can be dropped in the forwarding ASIC at ...

Detection of Blackholes Using Juniper Resiliency Interface

Unfortunately, black-holes sometimes occur in networks – packets disappear without trace for no apparent reason. Often the first symptom is when ...

GPU Fabrics for GenAI Workloads

GPU cluster scale, model partitioning, and traffic patterns between the GPUs for training workloads. Article initially ...

Boosting Route Scale and Performance with JunOS

Strategies to enhance the scale and performance of routing, aiming for faster convergence, improved stability, and optimized hardware utilization. ...

G.8275.1.enh: Juniper's Advancements in Timing and Synchronization