Author Archives: Greg Ferro
Author Archives: Greg Ferro
Content-addressable memory (CAM) is silicon chip architecture that is purpose-built for extremely fast but very specific type of memory lookups.
The post Basics: What is Content Addressable Memory (CAM) ? appeared first on EtherealMind.
The post Internets of Interest – 2 Jul 2016 appeared first on EtherealMind.
L3 routing to to the host. An idea whose time has come, again.
The post Response: Cumulus ndependence from L2 Data Centers appeared first on EtherealMind.
Barefoot Networks proves you can make ASICs without a big company.
The post Custom Silicon Isn’t That Hard After All appeared first on EtherealMind.
I'm back to installing servers/network in closets. Do we need data centers anymore ?
The post Upgrade Your Data Centre To A Closet appeared first on EtherealMind.
The terms routing, switching, forwarding and bridging have different meanings that have changed over time.
The post Basics: What is the difference between routing, switching, bridging and forwarding appeared first on EtherealMind.
Question : Is there always a feasible successor in EIGRP ? Background: An operational route is passive. If the path is lost, the router examines the topology table to find an FS. If there is an FS, it is placed in the routing table; otherwise, the router queries its neighbors, sending the route into active mode. Answer: There has to […]
The post Basics: Is there always a feasible successor in EIGRP ? appeared first on EtherealMind.
Selling Enterprise IT is moving to bottom up instead of top down. Consumer first.
The post Corporate to Consumer Devolution appeared first on EtherealMind.
conn-check – A deployment utility to check connectivity between services conn-check is a small utility, written in Python using the Twisted network library, that verifies outgoing connections from your application servers to services it depends on, e.g. databases, caches, web service APIs, etc.conn-check is used not only to verify network dependency changes at deploy time, […]
The post Tools: Conn-check appeared first on EtherealMind.
This is the most compelling article I’ve ever read about why on-premises applications/software are less competitive. I am reasonably certain that private cloud infrastructure can be as efficient as public cloud and cheaper over some period. What I’m coming to understand is that many of types of cloud-based applications may be much more efficent than […]
The post Response: Why On-Premises Software Will Die Sooner appeared first on EtherealMind.
The foundation of TCP/IP design is that the network is unreliable and packets will be lost.
The post TCP/IP Is Lossy Protocol appeared first on EtherealMind.
This article at Recode : In what appears to be a messy shakeup with hints of an internal power struggle nearing an end, Mario Mazzola, Prem Jain, Luca Cafiero and Soni Jiandani are leaving the company. This management team has been responsible for developing a range of Cisco products Nexus 5000, parts of Cisco UCS & […]
The post Musing: Cisco ACI Bosses Quit, Will it Survive ? appeared first on EtherealMind.
IDC published a promo piece about their research into videoconferencing market. From a market segment perspective: Multi-codec telepresence equipment revenue ($23.9 million) was down 44.4% quarter over quarter, but increased 27.4% year over year in 1Q16. Unit shipments were down 47.1% quarter over quarter, but increased 48.8% year over year. Room-based videoconferencing system revenue ($359.6 […]
The post Response: Videoconferencing Numbers appeared first on EtherealMind.
Openswitch has transioned from HPE to Linux Foundation project.
The post Response: OpenSwitch now a Linux Foundation appeared first on EtherealMind.
Dell OS10 is an open network operating system ounces its open network operating system(NOS) called OS10. Here are my thoughts and reactions. Operating System OS10 is a open source linux for networking devices. The base operating system has limited features in the same way that Windows or Linux on x86 has limited features. You can purchase […]
The post DELL OS10 – FIB Optimisation appeared first on EtherealMind.
This app looks useful for testing firewall rules after they have been applied
The post Useful Tools for Firewall Rules Checking appeared first on EtherealMind.
This article has opened my eyes to a future where a single fibre cable can have multiple cores. The future of Ethernet is yet to be determined as the IEEE community fights over whose technology patents will be used so that revenue from FRAND licensing can justify their own positions. So while we wait for […]
The post Response: Fibre Optic Multi-Core per Core Is Exciting appeared first on EtherealMind.
Its “best practice” to assume that IT vendor products are faulty, have serious bugs and will fail in normal operation at anytime.
The post Blessay: Proof of Concept Testing Should Never Happen appeared first on EtherealMind.
Cisco has killed the Nexus 6000 product line and you have 12 months to get your last orders in. This is long overdue. I’ve never understood why Cisco has so many different different Ethernet switch products that are effectively identical. The impact of merchant silicon and the success of the Nexus 9000 product overshadowed this […]
The post Cisco Nexus 6000 is EOL appeared first on EtherealMind.
The limited about of public information available on Broadcom products is frustrating and annoying.
The post Response: Broadcom’s Secretive Behaviour appeared first on EtherealMind.