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ROUTING Stories

DriveNets Boasts Cloud-Native Router Breakthrough

Published on: 2019-04-17

Cloud-native router startup DriveNets has followed up its February funding announcement by claiming its virtualized routing software, dubbed Network Cloud, can support 400G-per-port routing and be scaled up to a whopping 768 Tbit/s, making it (possibly) the highest capacity router on offer.

What SDN is and where it’s going

Published on: 2019-04-16

Hardware reigned supreme in the networking world until the emergence of software-defined networking (SDN), a category of technologies that separate the network control plane from the forwarding plane to enable more automated provisioning and policy-based management of network resources.

What SDN is and where it’s going

Published on: 2019-04-16

Hardware reigned supreme in the networking world until the emergence of software-defined networking (SDN), a category of technologies that separate the network control plane from the forwarding plane to enable more automated provisioning and policy-based management of network resources.

Juniper opens SD-WAN service for the cloud

Published on: 2019-04-09

Juniper has taken the wraps off a cloud-based SD-WAN service it says will ease the management and bolster the security of wired and wireless-connected branch office networks.

Juniper opens SD-WAN service for the cloud

Published on: 2019-04-09

Juniper has taken the wraps off a cloud-based SD-WAN service it says will ease the management and bolster the security of wired and wireless-connected branch office networks.

Iliad Launches 5G Ready IP Network Architecture with Segment Routing IPv6 in Italy

Published on: 2019-04-09

PARIS - MPLS+SDN+NFV World Congress - April 9, 2019 - Cisco announced today its involvement in helping Iliad deploy a state-of-the-art national IP Network, powered by Segment Routing IPv6 (SRv6), to provide a new mobile offering in Italy.

The future of the phone number: What’s blockchain got to do with it?

Published on: 2019-03-04

867-5309 … some of you might be old enough to remember this song from Tommy Tutone dating all the way back to 1981. That was nearly 40 years ago, but strangely enough, I remember that phone number. And I also remember phone booths, pay phones and the ability to go to the phone store and get a ...

How to secure your Azure network

Published on: 2018-10-16

Cloud services like Azure offer a lot of security features straight out of the box, especially if you're using their platform services. But virtual infrastructures are much like physical infrastructures, connecting virtual machines with software-defined virtual networks. Thus, they need the same ...

Review: 6 slick open source routers

Published on: 2018-02-01

Hackers of the world, unite! You have nothing to lose but the lousy stock firmware your routers shipped with. Apart from smartphones, routers and wireless base stations are undoubtedly the most widely hacked and user-modded consumer devices.

Review: 6 slick open source routers

Published on: 2018-02-01

Hackers of the world, unite! You have nothing to lose but the lousy stock firmware your routers shipped with. Apart from smartphones, routers and wireless base stations are undoubtedly the most widely hacked and user-modded consumer devices.

Why dynamic mapping is changing network troubleshooting for the better

Published on: 2017-05-15

Effective network troubleshooting requires experience and a detailed understanding of a network's design. And while many great network engineers possess both qualities, they still face the daunting challenge of manual data collection and analysis. The storage and backup industries have long been ...

The Confluence of SD-WAN and Microsegmentation

Published on: 2019-04-18

If you had to pick two really hot topics in the networking space right now, you'd be hard-pressed to find two more discussed than SD-WAN and microsegmentation. SD-WAN is the former "king of the hill" in the network engineering. I can remember having more conversations about SD-WAN in the last ...

Engaging LEAs in the Pacific

Published on: 2019-04-18

Meeting the growing demand for cybersecurity professionals has required organizations and government departments to broaden their range of potential candidates, many of whom have no background in information technology. This has certainly been the case among Pacific economies, with many being ...

Practice Safe BGP

Published on: 2019-04-04

This blog is a "fun BGP story" - let's call it a Case Study #1, a recent design situation involving local-as (Case Study #2), plus some lessons learned. One theme is that local-as can be fairly handy, so handy there might be a danger of over-using it!

Lessons Learned in Cloud Networking – AWS vs Azure

Published on: 2019-04-01

I've been working a lot with cloud networking lately. I will share some of my findings as this is still quite new and documentation around some topics is poor. Especially on the Azure side. Let me just first start with

Migration Strategy: Moving From MPLS/LDP to Segment Routing

Published on: 2019-03-21

MPLS core networks that use Label Distribution Protocol (LDP) are common in SP core networks and have served us well. So, the thought of pulling the guts out of the core is pretty daunting and invites the question why you would want to perform open-heart surgery on such critical infrastructure.

The Cloud Is (Not) Magic

Published on: 2019-03-21

Cloud technologies are changing the world. Sometimes faster than businesses can keep up, both as consumers of managed or SaaS application, but also on the vendor side. This blog is about some things I've noticed recently as potential pitfalls, and business challenges affecting ability to ...

Empower Your Business with the TOP 10 Cisco Items

Published on: 2019-03-21

Router-switch.com is having a big promotion on top-rated Cisco products including routing, switching, collaboration and security. The 4000 Series offers solutions for highly secure SD-WAN connectivity, application experience, unified communications, network automation, virtualization, and branch ...

Pulling Configs from Cisco NSO using curl and json2yaml.py

Published on: 2019-03-14

We're using Cisco NSO in our lab at the moment to provision L3VPNs across multi-vendor environments as part of a demo. Just noting down a few things here for future reference: You can use the curl (command-line URL) utility to query NSO's API and retrieve the configuration of a device it knows ...

Amazon Transit VPCs and Transit Gateway

Published on: 2019-03-07

This blog is about AWS, specifically multiple VPCs and routing, and some recent developments. My intent is to give you the flavor of some AWS design approaches, and then point you to some good material for the details. Amazon AWS Transit VPCs is an important cloud concept to consider using as ...

NAE: Some Help Dealing with Brain Block

Published on: 2019-01-17

For years, thanks to the gift of misaligned perception, I've been mentally blocked. I've avoided things like Machine Learning because my perceived skill with mathematics is weak, avoided programming languages like C# because the perceived uphill hike to get familiar is high and avoided front end ...

Dealing with Performance Brownouts

Published on: 2019-02-07

I've done a couple of application slowness (brownout) troubleshooting sessions recently. This blog is my attempt to condense some observations from both engagements, to share lessons learned. "Condense" might not be the right word, seeing how long this blog got! Troubleshooting with some process ...

Vendor Lock-in – Is It Really That Bad?!

Published on: 2018-12-30

In today's IT infrastructure, open source software is a common component. Many organizations and network engineers stay away from certain architectures and products citing vendor lock-in as their only argument but often lack the understanding to why they think vendor

SD-WAN – Glorified DMVPN?

Published on: 2018-12-28

I had an interesting discussion with Jon Cooper in the Network Collective Slack. The discussion was around SD-WAN. We were discussing if SD-WAN is just a "glorified DMVPN" or if it's something more than that. Note that this was a

Troubleshoot a DMVPN phase 3 architecture

Published on: 2018-10-09

In the last article, I explained how to configure DMVPN phase3, but what are the most useful commands to troubleshoot this type of network architecture? Five are the main group of commands used to troubleshoot a DMVPN topology: The "show dmvpn" and "show ip nhrp" commands permit to obtain the ...

DMVPN Phase 3: a complete guide

Published on: 2018-07-16

In a previous article, I explained what is and how it works DMVPN technology. In this article you see how to configure DMVPN phase3. This phase allows spokes to build a spoke-to-spoke tunnel and to overcomes the phase2 restriction using NHRP traffic indication messages from the hub to signal to ...

Understanding Cisco DMVPN

Published on: 2018-06-26

In an old post, dated 2011, I explained various types of VPN technologies. In seven years several things have changed: SHA1 is deprecated, des and 3des are no more used for security issues, but some VPN technologies are still used with protocols more secure (SHA256, AES, ...).

The Overlay Problem: Getting In and Out

Published on: 2016-09-30

I've been researching overlay network strategies recently. There are plenty of competing implementations available, employing various encapsulations and control plane designs. But every design I've encountered seems ultimately hampered by the same issue: scalability at the edge. Why Build an ...

Wireless 2017: What We Wanted Then, and What We Want Today

Published on: 2017-12-15

As a wireless engineer, we study the 802.11 protocol. We read how the standard is written, study how it is supposed to work and yet seem to spend our time fighting why it doesn't work. Tweaking power, channels, datarates, toggling features and code versions in hope that things functions the way ...

L3 fabric DC -The underlay Network (BGP) -part2

Published on: 2017-01-17

In the previous post, we laid the foundation of L3 fabric DC In this post we will discuss the underlay network which mainly provide IP reachability plus ECMP capability, here BGP would play a role in your DC next to the 3 other that we discussed one of the previous posts.

L3 fabric DC -The underlay Network -Part1

Published on: 2016-12-07

In the previous posts we have discussed the classic DC designs and the M-LAG solution. In this post we will cover the basic L3 fabric DC, you might never heard of it or you think that's a solution for massive scale DC, yes the massive DC in the world would be running L3 fabric but nowadays more ...

poor man’s dos protection

Published on: 2014-02-10

You might have been DoS-ed recently. And you can't spend more money on special and expensive DoS detection and mitigation systems. Well, you have routers, don't you? Some routing platforms support features which can be efficiently used to limit the impact of DoS attacks. Let us take a brief look ...

bgp – advertising multiple paths

Published on: 2014-02-07

Yes, it can be done by BGP. What was the question anyway? Path hiding on a route server running BGP can happen if the route server has been configured to filter the chosen best path from reaching a particular route server client. Assuming a traditional best path selection, when the same prefix ...

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