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Category Archives for "Networking"

Last Week on ipSpace.net (2019W6)

Last week Howard Marks completed the Hyperconverged Infrastructure Deep Dive trilogy covering smaller HCI players (including Cisco’s Hyperflex) and explaining the intricacies of costing and licensing HCI solutions.

On Thursday I finally managed to start the long-overdue Data Center Interconnects update. The original webinar was recorded in 2011, and while the layer-3 technologies haven’t changed much (with LISP still being mostly a solution in search of a problem), most of the layer-2 technologies I described at that time vanished, with OTV being a notable exception. Keep that in mind the next time your favorite $vendor starts promoting another wonderful technology.

You can get access to both webinars with standard ipSpace.net subscription.

Juniper eBGP

6 steps to configure eBGP. Configure a router-id Configure an autonomous system number Configure a BGP group and define the peer type Add neighbors to the peer group Define a routing policy to export routes Assign the routing policy to the BGP group Configuration ...continue reading

Building static routes with ExaBGP

In our last post we covered the basic setup and configuration of ExaBGP. While we were able to make use of ExaBGP for dynamic route advertisement, it wasn’t able to help us when it came to actually programming the servers routing table. In this post, I want to show you how you can leverage ExaBGP from a more programatic perspective. We’ll start by handling route advertisement to our peer and then tackle reading and processing received route updates. We’ll also start using another Python module (pyroute2) to program the routing table of the bgp_server host so that it begins acting more like a normal router. Enough talk – let’s dive in!

Im going to assume you’re starting off at the end of the last post. So the first thing we need to do is clean up a couple of items. We’re not going to rely on the static route we provisioned so to clean that up we can simply reapply the netplan network configuration using the command sudo netplan apply…

user@bgp_peer:~$ ip route
default via 192.168.127.100 dev ens3 proto static 
10.10.10.0/30 dev ens7 proto kernel scope link src 10.10.10.1 
10. Continue reading

Juniper VRRP

7 steps to configure VRRP. Enable VRRPv3 Define a VRRP group number Configure a virtual IP address Configure a virtual link-local address (IPv6 only) Configure a priority Configure preempt (optional) Configure router advertisement properties (IPv6 only) ...continue reading

Cisco pushes silicon photonics for enterprise, webscale networking

Cisco says it's closed its deal to buy optical-semiconductor firm Luxtera for $660 million bringing it the advanced optical technology customers will need for speed and throughput for future data-center and webscale networks.When Cisco announced the deal in December, Rob Salvagno, Cisco vice president of Corporate Business Development, said, “As system port capacity increases from 100GbE to 400GbE and beyond, optics plays an increasingly important role in addressing network infrastructure constraints, particularly density and power requirements.”To read this article in full, please click here

Cisco pushes silicon photonics for enterprise, webscale networking

Cisco says it's closed its deal to buy optical-semiconductor firm Luxtera for $660 million bringing it the advanced optical technology customers will need for speed and throughput for future data-center and webscale networks.When Cisco announced the deal in December, Rob Salvagno, Cisco vice president of Corporate Business Development, said, “As system port capacity increases from 100GbE to 400GbE and beyond, optics plays an increasingly important role in addressing network infrastructure constraints, particularly density and power requirements.”To read this article in full, please click here

Cisco pushes silicon photonics for enterprise, webscale networking

Cisco says it's closed its deal to buy optical-semiconductor firm Luxtera for $660 million bringing it the advanced optical technology customers will need for speed and throughput for future data-center and webscale networks.When Cisco announced the deal in December, Rob Salvagno, Cisco vice president of Corporate Business Development, said, “As system port capacity increases from 100GbE to 400GbE and beyond, optics plays an increasingly important role in addressing network infrastructure constraints, particularly density and power requirements.”To read this article in full, please click here

Cisco pushes silicon photonics for enterprise, webscale networking

Cisco said it's closed its deal to buy optical-semiconductor firm Luxtera for $660 million, bringing it the advanced optical technology customers will need for speed and throughput for future data-center and webscale networks.When Cisco announced the deal in December, Rob Salvagno, Cisco's vice president of Corporate Business Development, said, “As system port capacity increases from 100GbE to 400GbE and beyond, optics plays an increasingly important role in addressing network infrastructure constraints, particularly density and power requirements.”To read this article in full, please click here

Dell CTO talks modern data centers, the edge, and digital disruption

Dell’s CTO has laid out the company’s vision of where enterprise technology is headed in 2019, and it’s not what people were predicting a few years ago.Gone is the talk of the demise of the data center. Instead, the data center is being repurposed, and some of its tasks are being moved to the edge, said Robert Hormuth, CTO and vice president of Dell EMC Server Infrastructure Solutions. This, he said, is a time to be disruptive before your competition.[ Read also: Edge computing best practices and Edge computing is the place to address a host of IoT security concerns | Get regularly scheduled insights: Sign up for Network World newsletters ] In a recent blog post, Hormuth said IT must be the enabler of the transformational journey for IT. “Businesses must transform and embrace the digital world, or get run over by a new, more agile competitor with a new business model benefiting from advanced technologies like data analytics, AI, ML, and DL. No business is safe from the wave of digital disruption,” he wrote.To read this article in full, please click here

Dell CTO talks modern data centers, the edge, and digital disruption

Dell’s CTO has laid out the company’s vision of where enterprise technology is headed in 2019, and it’s not what people were predicting a few years ago.Gone is the talk of the demise of the data center. Instead, the data center is being repurposed, and some of its tasks are being moved to the edge, said Robert Hormuth, CTO and vice president of Dell EMC Server Infrastructure Solutions. This, he said, is a time to be disruptive before your competition.[ Read also: Edge computing best practices and Edge computing is the place to address a host of IoT security concerns | Get regularly scheduled insights: Sign up for Network World newsletters ] In a recent blog post, Hormuth said IT must be the enabler of the transformational journey for IT. “Businesses must transform and embrace the digital world, or get run over by a new, more agile competitor with a new business model benefiting from advanced technologies like data analytics, AI, ML, and DL. No business is safe from the wave of digital disruption,” he wrote.To read this article in full, please click here

Dell CTO talks modern data centers, the edge, and digital disruption

Dell’s CTO has laid out the company’s vision of where enterprise technology is headed in 2019, and it’s not what people were predicting a few years ago.Gone is the talk of the demise of the data center. Instead, the data center is being repurposed, and some of its tasks are being moved to the edge, said Robert Hormuth, CTO and vice president of Dell EMC Server Infrastructure Solutions. This, he said, is a time to be disruptive before your competition.[ Read also: Edge computing best practices and Edge computing is the place to address a host of IoT security concerns | Get regularly scheduled insights: Sign up for Network World newsletters ] In a recent blog post, Hormuth said IT must be the enabler of the transformational journey for IT. “Businesses must transform and embrace the digital world, or get run over by a new, more agile competitor with a new business model benefiting from advanced technologies like data analytics, AI, ML, and DL. No business is safe from the wave of digital disruption,” he wrote.To read this article in full, please click here

Last Month in Internet Intelligence: January 2019

This post is presented in conjunction with The Internet Society.

During the second half of 2018, the causes of significant Internet disruptions observed through the Oracle Internet Intelligence Map could be clustered into a few overarching areas: government-directed, cable problems, power outages, distributed denial of service (DDoS) attacks, and general technical issues. Little changed heading into 2019, with two new government-directed Internet disruptions observed in Africa, alongside disruptions caused by fiber cuts and other network issues that impacted a number of countries around the world.

Government Directed

Initially covered in last month’s overview, the Internet disruption in the Democratic Republic of Congo continued into January, lasting through the third week of the month. Government authorities reportedly cut off Internet access in the country in December to prevent “rumor mongering” in the run-up to presidential elections.

An attempted military coup in Gabon led to a day-long Internet disruption in the country. The disruption started just after 07:00 UTC on January 7, as seen in the figure below, which shows clear declines in the Traceroute Completion Ratio and BGP Routes metrics, as well as a disruption to the usual diurnal pattern seen in the DNS Query Rate metric. Although the coup Continue reading

Weekend Reads 020719

When the 2015 rules were passed, the FCC moved to regulate the internet as a telecommunications service, as opposed to the less stringent classification of an information service, a change that was then reversed in 2017. —Colin Lecher

Imagine this: an enormous tech company is tracking what you do on your phone, even when you’re not using any of its services, down to the specific images that you see. —Sydney Li and Jason Kelley

The new head of a congressional antitrust panel has vowed to take on big technology companies that “threaten our democracy”, the latest sign of a growing cross-party Washington consensus that Silicon Valley has grown too powerful. —David Smith

Moore’s Law has underwritten a remarkable period of growth and stability for the computer industry. The doubling of transistor density at a predictable cadence has fueled not only five decades of increased processor performance, but also the rise of the general-purpose computing model. However, according to a pair of researchers at MIT and Aachen University, that’s all coming to an end. —Michael Feldman

Deciding what products can improve an organization’s network security is a complex process. You must weigh a number of factors as part of the purchase Continue reading

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