Transport Protocols
One of the early refinements in the Internet protocol model was the splitting of the original Internet protocol from a single monolithic protocol specification into the Internet Protocol (IP) and a pair of transport protocols. The Internet Protocol layer is intended to be used by the internal switches within the network to forward the packet to its intended destination, while the Transport Protocol layer is intended to be used by the source and destination systems. In this article I’d like to look at what we’ve been doing since then with these transport protocols.Glass Half Empty or Half Full?
Look at that middle glass in the picture to the left. Do you view that middle glass as 1/2 empty or 1/2 full?
SDxCentral Weekly News Roundup — October 23, 2015
Departures at Dell; Docker's latest conquest; ONOS appoints a community manager
iPexpert’s Newest “CCIE Wall of Fame” Additions 10/23/2015
Please join us in congratulating the following iPexpert students who have passed their CCIE lab!
Cisco DemoFriday Q&A + Video: Transforming DevOps Model With Open NX-OS
In the final part of the Cisco Open NX-OS DemoFriday series, Cisco and Ansible demonstrate how Open NX-OS is easily integrated to achieve greater collaboration within DevOps.
MikroTik – CCR1072-1G-8S+ – PPPoE testing preview – 30,000 connections and queues.
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Why we chose PPPoE as the next test
First of all, thanks to everyone for all the positive feedback, comments and questions about the CCR1072-1G-8S+ testing we have been posting in the last few months. Even MikroTik has taken an interest in this testing and we have gotten some great feedback from them as well.
We received more questions about the PPPoE capabilities of the CCR1072-1G-8S+ than any other type of request. Since we have already published the testing on BGP, throughput and EoIP, we have decided to tackle the PPPoE testing to understand where the limits of the CCR1072-1G-8S+ are. This is only a preview of the testing as we are working on different methods of testing and config, but this will at least give you a glimpse of what is possible.
30,000 PPPoE Connections !!!!
Overview of PPPoE connections and CPU load
PRTG Monitoring
We have started using PRTG in the StubArea51.net lab as it makes monitoring of resource load over time much easier when we are testing. Check it out as it is free up to 100 sensors and works very well with MikroTik
https://www.paessler.com/prtg/download
PRTG CPU Profile
PRTG PPPoE Continue reading
MikroTik – CCR1072-1G-8S+ – PPPoE testing preview – 30,000 connections and queues.
[adrotate banner=”5″]
Why we chose PPPoE as the next test
First of all, thanks to everyone for all the positive feedback, comments and questions about the CCR1072-1G-8S+ testing we have been posting in the last few months. Even MikroTik has taken an interest in this testing and we have gotten some great feedback from them as well.
We received more questions about the PPPoE capabilities of the CCR1072-1G-8S+ than any other type of request. Since we have already published the testing on BGP, throughput and EoIP, we have decided to tackle the PPPoE testing to understand where the limits of the CCR1072-1G-8S+ are. This is only a preview of the testing as we are working on different methods of testing and config, but this will at least give you a glimpse of what is possible.
30,000 PPPoE Connections !!!!
Overview of PPPoE connections and CPU load
PRTG Monitoring
We have started using PRTG in the StubArea51.net lab as it makes monitoring of resource load over time much easier when we are testing. Check it out as it is free up to 100 sensors and works very well with MikroTik
https://www.paessler.com/prtg/download
PRTG CPU Profile
PRTG PPPoE Continue reading
Juniper CEO Isn’t Worried About Dell/EMC
The world still needs an IP specialist, right?
PlexxiPulse—Defining the New Network
The network is changing; there is no doubt about it. Undergoing its own transformation to meet advancements in storage and compute, the network is becoming more important than ever as Big Data and IoT continue to evolve. Our own Bob Noel penned a blog post this week that identifies areas of improvement for the network to meet the requirements of tomorrow. Take a look and tell us your thoughts for the future of the network. Which of Bob’s requirements do you think is the most important?
Below please find a few of our top picks for our favorite news articles of the week. Enjoy!
Enterprise Storage Forum: The New Era of Secondary Storage HyperConvergence
By Jim Whalen, Senior Analyst, Taneja Group
The rise of hyperconverged infrastructure platforms has driven tremendous change in the primary storage space, perhaps even greater than the move from direct attached to networked storage in decades past. Now, instead of discrete, physically managed components, primary storage is being commoditized, virtualized and clustered, with the goal of providing a highly available virtual platform to run applications on, abstracted away from the individual hardware components themselves. This has provided dramatic benefits to IT, allowing them to Continue reading
Show 260: Design & Build 7: Security In Small/Medium Enterprises
The Packet Pushers talk with Jay Swan, Operations Security Engineer at GitHub, about how small and medium-size organizations can build robust security and ops without spending a ton of money.
The post Show 260: Design & Build 7: Security In Small/Medium Enterprises appeared first on Packet Pushers.
New CCIE Collaboration Videos Have Arrived!
Attention all CCIE Collaboration candidates!! We’re excited to announce that Andy Vassar has been tirelessly working on new videos, and we have a brand new CCIE Lab Video on Demand playlist available!
Andy has gone through and broken down all the technologies to make sure that you have the most up to date information to help you effectively prepare for your CCIE Collaboration Lab Exam. In this playlist you’ll find 48 videos, broken down by blueprint section and technology, with the need to know information and topics covered in the lab exam.
All of this is in a high quality HD format that is clear and engaging to watch.
Stay tuned to see what other great video updates we’ll have in the coming days and weeks for our Collaboration track, as well as for our other tracks and certifications.
Make sure you swing by your Member’s Area today to check out this new playlist! We’re pretty excited about it, but don’t just take our word for it… have a look for yourself.
Juniper Networks Posts Strong 3Q Results
Routing, switching, enterprise, carrier — it all came together in Q3.
Results of experimenting with Brotli for dynamic web content
Compression is one of the most important tools CloudFlare has to accelerate website performance. Compressed content takes less time to transfer, and consequently reduces load times. On expensive mobile data plans, compression even saves money for consumers. However, compression is not free—it comes at a price. It is one of the most compute expensive operations our servers perform, and the better the compression rate we want, the more effort we have to spend.
The most popular compression format on the web is gzip. We put a great deal of effort into improving the performance of the gzip compression, so we can perform compression on the fly with fewer CPU cycles. Recently a potential replacement for gzip, called Brotli, was announced by Google. Being early adopters for many technologies, we at CloudFlare want to see for ourselves if it is as good as claimed.
This post takes a look at a bit of history behind gzip and Brotli, followed by a performance comparison.
Compression 101
Many popular lossless compression algorithms rely on LZ77 and Huffman coding, so it’s important to have a basic understanding of these two techniques before getting into gzip or Brotli.
LZ77
LZ77 is a simple technique developed Continue reading
Getting Started with VMware NSX Distributed Firewall – Part 1
Who saw it coming that segmentation would be a popular term in 2015?!? Gartner analyst Greg Young was almost apologetic when he kicked off the Network Segmentation Best Practices session at the last Gartner Security Summit.
As a professional with a long history in the enterprise firewall space, I know I found it odd at first. Segmentation is such a basic concept, dovetailing with how we secure networks – historically on network boundaries. Network segmentation is the basis for how we write traditional firewall rules – somehow get the traffic TO the firewall, and policy can be executed. How much more can we say about network segmentation?
But there is a problem with the reach of segmentation based on network. If traffic does not cross the firewall, you are blind. All hosts in the same network, commonly the same VLAN, can abuse each other at will. Perhaps netflow or IPS sensors are throughout your network – just to catch some of this internal network free-for-all. And the DMZ? I like to think of all these networks as blast-areas, where any one compromise could potentially take everything else on the same network down.
It’s not really network segmentation that’s all the Continue reading
QOTW: Obsession with Knowledge
Philip Dow, Virtuous Minds
The post QOTW: Obsession with Knowledge appeared first on 'net work.