Response: Bare-metal Switches And SDN controllers At Facebook
Facebook has telling people more about it's in-house designed and developed whitebox Ethernet switching based on Broadcom silicon (not sure if it's Trident2 or Arad), their own Linux distribution and OpenCompute standards.
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Coffee Break – Show 8
This is “The Coffee Break”. A podcast on state of the networking business where we discuss vendors moves and news, analysis on product and positioning, and look at the business of networking. In the time it takes to have coffee break. Thanks to Steven Hill from Current Analysis for joining us this week. Show Links […]
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The post Coffee Break – Show 8 appeared first on Packet Pushers Podcast and was written by Greg Ferro.
Coffee Break – Show 8
[player] This is “The Coffee Break”. A podcast on state of the networking business where we discuss vendors moves and news, analysis on product and positioning, and look at the business of networking. In the time it takes to have coffee break. Thanks to Steven Hill from Current Analysis for joining us this week. Show […]
The post Coffee Break – Show 8 appeared first on Packet Pushers.
Coffee Break – Show 8
[player] This is “The Coffee Break”. A podcast on state of the networking business where we discuss vendors moves and news, analysis on product and positioning, and look at the business of networking. In the time it takes to have coffee break. Thanks to Steven Hill from Current Analysis for joining us this week. Show... Read more »NANOG 61
The recent NANOG 61 meeting was a pretty typical NANOG meeting, with a plenary stream, some interest group sessions, and an ARIN Public Policy session. The meeting attracted some 898 registered attendees, which was the biggest NANOG to date. No doubt the 70 registrations from Microsoft helped in this number, as the location for NANOG 61 was in Bellevue, Washington State, but even so the interest in NANOG continues to grow, and there was a strong European contingent, as well as some Japanese and a couple of Australians. The meeting continues to have a rich set of corridor conversations in addition to the meeting schedule. These corridor conversations are traditionally focused on peering, but these days there are a number of address brokers, content networks, vendors and niche industry service providers added to the mix. Here’s my impressions of some of the presentations at NANOG 61.Cumulus Networks, sFlow and data center automation
The Cumulus Linux platform makes it possible to run the same open source agent on switches, servers, and hypervisors - providing unified end-to-end visibility across the data center. The open networking model that Cumulus is pioneering offers exciting opportunities. Cumulus Linux allows popular open source server orchestration tools to also manage the network, and the combination of real-time, data center wide analytics with orchestration make it possible to create self-optimizing data centers.
Install and configure Host sFlow agent
The following command installs the Host sFlow agent on a Cumulus Linux switch:sudo apt-get install hsflowdNote: Network managers may find this command odd since it is usually not possible to install third party software on switch hardware. However, what is even more radical is that Cumulus Linux allows users to download source Continue reading
Conferences: Go
It is slightly paradoxical that since I left networking for the student life I’ve actually been reading more about networking than I was able to during the last years of my working life. Similarly, I’ve had more time to follow the goings on in the social media, especially when the big conferences were on. Over […]
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The post Conferences: Go appeared first on Packet Pushers Podcast and was written by Matthew Mengel.
CCIE renewed
In the very last day of availability of the CCIE v4 350-001 written exam I’ve renewed my CCIE for a couple of years more: My plan was to recertify with another track – Wireless or Security – but life happens…/31 subnet in point-to-point links. Is that possible?
How does the internet work - We know what is networking
On point to point links we actually do not need special broadcast address of that subnet because there's only one way you can send a packet across point to point link.
Response: SDN Disruption to Networking Monitoring & Gartner’s NPMD
Gartner has defined itself a new market segment in “Network Performance Monitoring and Diagnostics” (NPMD) that highlights “solutions from AppNeta, CA Technologies, Corvil, Fluke Networks, Genie Networks, HP, Infovista, JSDU (via Network Instruments acquisition), Lancope, NetScout Systems, Niksun, Orsyp, Paessler, Riverbed, and SevOne.” These are all good companies but these companies mostly rely on hardware […]
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A Wi-Fi Gamble That Pays Off @Interop Las Vegas?
"Good Luck!" That’s what I was told when an industry friend heard that we were providing the Wi-Fi service for this year's Interop Las Vegas. To be fair, the bar for Wi-Fi at Interop was quite low. Historically the Wi-Fi...What’s the best approach to building next-generation data center networks?
Experts are in agreement that Software Defined Networking/Network Virtualization will make the network world more efficient and more agile, but opinions vary on the best path forward. We reached out to two of the most prominent players to ask them to spell out why they think their approach is best.
The Experts
Chris King
vice president of product marketing in VMware’s Networking & Security Business Unit, argues that network virtualization – embodied in the company’s NSX product -- is the way to go because it abstracts network control from network hardware while replicating everything the application expects to see, vastly simplifying the task of building and managing complex network environments. View debate
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Internets of Interest for 5th June 2014
Collection of useful, relevant or just fun places on the Internets for 5th June 2014 and a bit commentary about what I’ve found interesting about them: VMware NSX, Multi-Hypervisor Capability, and FUDslinging — The Peering Introvert – An outbreak of FUD slinging from Cisco at Cisco Live last week which was poorly executed. Factually […]
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Musing: Cisco UCS is leading vendor for server blades, in the Americas, by revenue
There are two sides to Cisco's success with UCS announced today. It's a great achievement that has a hidden challenges.
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Outlier or Leader? Learning from Google’s Andromeda SDN
Outlier or Leader? Learning from Google's Andromeda SDN
by Brian Boyko, Technology Contributor - June 4, 2014
A bit like how physics breaks down when you start talking about the supermassive black holes, all the conventional wisdom about best practices regarding SDN deployment goes out the window when you start talking about the outliers of the biggest companies.
There's a very good reason that "Google" was named after a really big number.
Google, and companies like them (Amazon, Microsoft, etc.) who have super-large, complex network infrastructures, face challenges that 99.99% of enterprises will never have. It makes financial sense for them to invest in custom technologies to address their unique challenges and give them competitive advantages. Not surprisingly then, their SDN deployments are full of unique, in-house solutions to unique, in-house problems.
Google's SDN is codenamed Andromeda, and not only is it used with Google's own servers but also in two zones of Google’s IaaS, Compute Engine.
As Google’s Cloud Platform Blog states, its virtual network has to compete with the physical network when it comes to performance, availability, and security. This has to be done "across virtual machines, hypervisors, operating systems, network interface Continue reading
Cisco now #1 on bladeservers in US with the Cisco UCS
Five years ago, Cisco started out on their journey to get in on the server market.
Very few people believed that Cisco would get a big share of the market.
Today, just five years later we are reached by the news that Cisco is now
the largest seller of blade servers in the US! From nothing to #1 in five
years, that is an impressive feat for sure!
This slide provides a summary of some of the statistics for UCS:
Over 33000 customers are now using UCS and it’s growing! Cisco is still showing
significant growth at 39% The only other vendors to show growth are Dell and Hitachi.
Cisco now has 40.9% of the blade server market in the US. Worldwide, Cisco is at #2
behind HP. I’m expecting this gap to decrease and I wouldn’t be surprised if Cisco
passes HP globally within a year or two as well.
The next slide is very interesting. Cisco went from nothing to #1 in five years.
IBM used to be a major player but now only has 10% of the market.
Not only has UCS been selling really well, it also has a lot of performance records.
Currently UCS Continue reading
HP Unified Wireless: AP Based (decentral) 802.1x authentication
This is a follow-up on the post which shows the basic 802.1x authentication. Make sure to read that post first before continuing with the this local authentication article: http://abouthpnetworking.com/2014/06/03/hp-unified-wireless-central-802-1x-configuration/ This post configuration will result in: Decentral (local AP) authentication: AP … Continue reading
How to build CCIE V5 Lab – with CSR 1000V
Original content from Roger's CCIE Blog Tracking the journey towards getting the ultimate Cisco Certification. The Routing & Switching Lab Exam
How to build CCIE V5 Lab using ESXi and CSR 1000v The basis of this topology is centered around the INE Hardware build which is detailed here – INE CCIE V5 Hardware Topology This post will detail how to build ccie v5 lab using Vmware and CSR 1000v routers and the issues I faced which […]
Post taken from CCIE Blog
Original post How to build CCIE V5 Lab – with CSR 1000V
Elephant Detection in Virtual Switches & Mitigation in Hardware
These are notes from a “Elephants and Mice” on elephant flow detection and mitigation in software switches. The result of tests demonstrate that integration between overlay and underlay networks has value. This solution uses low cost networking components and highlights some competitive positioning against Cisco ACI.
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[minipost] How to fix MySQL lost table description from .frm files after emergency migration of /var/lib/mysql
For best article visual quality, open [minipost] How to fix MySQL lost table description from .frm files after emergency migration of /var/lib/mysql directly at NetworkGeekStuff.
In May 2014, networkgeekstuff.com got a small problem when the hosting BeagleBone Black went dead and the old Raspberry PI environment was on that point already used for another project. I was forced to migrate quickly to a virtual server hosting company that I use. Actually it was a performance boost and quick quick, my MySQL and Apache migration scripts for backup recovery made the transition in ~2 hours. But last week I noticed that my MySQL backup system had troubles with two WordPress tables.
The MySQLdump was telling me that two tables do not exist with this message:
root@gserver:~/scripts/tachicoma_remote_backup# mysqldump -h localhost -u mysqlbackuper -p<removed> wordpressikdata > wordpressikdata.sql
mysqldump: Got error: 1146: Table ‘wordpressikdata.wp_rfr2b_options‘ doesn’t exist when using LOCK TABLES
root@gserver:~/scripts/tachicoma_remote_backup# mysqldump -h localhost -u mysqlbackuper -p<removed> wordpressikdata > wordpressikdata.sql
mysqldump: Got error: 1146: Table ‘wordpressikdata.wp_rfr2b_options‘ doesn’t exist when using LOCK TABLES
But when I looked at /var/lib/mysql/wordpressikdata, the files for these tables are there, and show tables showed these tables as well.
mysql> show Continue reading