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Category Archives for "Networking"

Will DPUs Change the Network?

It’s easy to get excited about what seems to be a new technology and conclude that it will forever change the way we do things. For example, I’ve seen claims that SmartNICs (also known as Data Processing Units – DPU) will forever change the network.

TL&DR: Of course they won’t.

Before we start discussing the details, it’s worth remembering what a DPU is: it’s another server with its own CPU, memory, and network interface card (NIC) that happens to have PCI hardware that emulates the host interface cards. It might also have dedicated FPGA or ASICs.

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Will DPUs Change the Network?

It’s easy to get excited about what seems to be a new technology and conclude that it will forever change the way we do things. For example, I’ve seen claims that SmartNICs (also known as Data Processing Units – DPU) will forever change the network.

TL&DR: Of course they won’t.

Before we start discussing the details, it’s worth remembering what a DPU is: it’s another server with its own CPU, memory, and network interface card (NIC) that happens to have PCI hardware that emulates the host interface cards. It might also have dedicated FPGA or ASICs.

Read more …

Melbourne home to AWS’ second region in Australia

Amazon Web Services (AWS) on Tuesday said its second infrastructure region in Australia has been made available for customers.The new region in Melbourne (codenamed: ap-southeast-4), which was first announced in December 2020, will consist of three availability zones.Availability zones are the building blocks of an AWS region that place infrastructure in separate and distinct geographic locations.AWS had launched its first infrastructure region in Sydney in 2012, which also has three availability zones.Other than the two regions, Australia is home to seven Amazon CloudFront Edge locations in Australia, backed by a Regional Edge cache in Sydney. The company had launched an additional CloudFront point of presence (PoP) in Perth in 2018.To read this article in full, please click here

Melbourne home to AWS’ second region in Australia

Amazon Web Services (AWS) on Tuesday said its second infrastructure region in Australia has been made available for customers.The new region in Melbourne (codenamed: ap-southeast-4), which was first announced in December 2020, will consist of three availability zones.Availability zones are the building blocks of an AWS region that place infrastructure in separate and distinct geographic locations.AWS had launched its first infrastructure region in Sydney in 2012, which also has three availability zones.Other than the two regions, Australia is home to seven Amazon CloudFront Edge locations in Australia, backed by a Regional Edge cache in Sydney. The company had launched an additional CloudFront point of presence (PoP) in Perth in 2018.To read this article in full, please click here

Network Break 414: 230 Juniper Vulnerabilities, Should Cisco Patch An EOL Router, T-Mobile Takes Weeks To Spot Breach

On today's Network Break podcast we cover a raft of Juniper vulnerabilities, whether Cisco should patch serious vulnerabilities in end-of-life products, a big T-Mobile breach, Avaya dealing with significant debt, sweeping rounds of layoffs, and more IT news.

The post Network Break 414: 230 Juniper Vulnerabilities, Should Cisco Patch An EOL Router, T-Mobile Takes Weeks To Spot Breach appeared first on Packet Pushers.

IDC: With possible recession looming, IT pros plan spending adjustments

Facing what they perceive as an inevitable recession, IT planners are moving ahead with infrastructure investment but also calculating how to shift priorities if spending cuts become unavoidable, according to monthly surveys by IDC.Roughly 81% of respondents expect their spending to stay the same or increase for 2023, despite anticipating economic “storms of disruption." The results are based on surveys conducted in November and December 2022 of more than 800 IT decision makers in North America, Asia/Pacific, and Europe.Cloud spending is increasing, and an IDC Quick poll of 69 CIOs from its global CIO Executive Council conducted in December found two-thirds of them are already spending more on cloud services than they budgeted. The two studies are cited in the IDC report “Early 2023 Cloud Budget Outlook: Aligning IT Spending with the Business Conditions” published this month.To read this article in full, please click here

Working with image files on the Linux command line

While the best way to view or manipulate image files on Linux is to open them on your desktop for viewing or manipulating with tools like Gimp, there are quite a few ways to get important details on the command line.Identifying image type by file extension In general, image files can be identified on the command line by listing their names. Clearly ".jpg" represents a jpeg file, ".png" a portable network graphics file, ".gif" a graphics interchange format file, ".tiff" a tagged image file and so on.$ ls -l images -rw-rw-r--. 1 shs shs 256093 Jul 15 2018 mycats.jpg -rw-r-----. 1 shs shs 784238 Jul 15 2018 mycats.png -rw-rw-r--. 1 shs shs 6760 Jul 15 2018 arrow.jpg -rw-r-----. 1 shs shs 8853 Jul 15 2018 arrow.png Nearly all of the time you can rely on file extensions accurately reporting the file type, but there's more you can do with additional commands.To read this article in full, please click here

Working with image files on the Linux command line

While the best way to view or manipulate image files on Linux is to open them on your desktop for viewing or manipulating with tools like Gimp, there are quite a few ways to get important details on the command line.Identifying image type by file extension In general, image files can be identified on the command line by listing their names. Clearly ".jpg" represents a jpeg file, ".png" a portable network graphics file, ".gif" a graphics interchange format file, ".tiff" a tagged image file and so on.$ ls -l images -rw-rw-r--. 1 shs shs 256093 Jul 15 2018 mycats.jpg -rw-r-----. 1 shs shs 784238 Jul 15 2018 mycats.png -rw-rw-r--. 1 shs shs 6760 Jul 15 2018 arrow.jpg -rw-r-----. 1 shs shs 8853 Jul 15 2018 arrow.png Nearly all of the time you can rely on file extensions accurately reporting the file type, but there's more you can do with additional commands.To read this article in full, please click here

AWS pledges $35 billion of additional investment for Virginia data centers

Amazon Web Services has confirmed it plans to invest a further $35 billion by 2040 in Virginia, expanding its US-EAST-1 region by establishing multiple data center campuses across the state and creating 1,000 new jobs.Governor of Virginia Glenn Youngkin announced the news on January 20, saying he was excited that AWS has chosen to continue its growth in the region.“Virginia will continue to encourage the development of this new generation of data center campuses across multiple regions of the Commonwealth,” he said in a statement.To read this article in full, please click here

A new role for network pros: application-flow architect

There are a lot of issues that network-management people worry about. We all have heard about faults, failures, breaches. But want to know what long-term problem is keeping the smart members of the network leadership of enterprises up at night? It’s an empty chair. Their chair, at the table that makes the plans that set network requirements and directions today and for years to come. These leaders used to sit in that chair, but now they say there’s no place for them.Application designs determine network requirements We used to build networks from primitive pieces, like digital trunks and routers. Then we built them from services, like IP VPNs. That transformation was jarring to many who’d cut their teeth on real private-network technology, but they were still a big part of the game. Today, we’re still building networks from services, but the services of today are application services that include implicit network features. The really new network is built from connectivity services that are included in cloud and even data-center hosting packages. Application planners design these services, and the decisions they make frame the building-blocks of the network. One chief network officer said he’d gone from building technology to stocking Continue reading

netlab: Building a Layer-2 Fabric

A friend of mine decided to use netlab to build a simple traditional data center fabric, and asked me a question along these lines:

How do I make all the ports be L2 by default i.e. not have IP address assigned to them?

Trying to answer his question way too late in the evening (I know, I shouldn’t be doing that), I focused on the “no IP addresses” part. To get there, you have to use the l2only pool or disable IPv4 prefixes in the built-in address pools, for example:

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netlab: Building a Layer-2 Fabric

A friend of mine decided to use netlab to build a simple traditional data center fabric, and asked me a question along these lines:

How do I make all the ports be L2 by default i.e. not have IP address assigned to them?

Trying to answer his question way too late in the evening (I know, I shouldn’t be doing that), I focused on the “no IP addresses” part. To get there, you have to use the l2only pool or disable IPv4 prefixes in the built-in address pools, for example:

Read more …
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