I present an outline of a segmented front end that avoids the limitations of the traditional load balancer designs. It allow horizontal scaling of for multi-10Gb ISP service, resiliency, redundancy at a fraction of the cost of conventional design.
Today you design resilient, redundant networks with what you have. Tomorrow, we need networks that use using software and freedom to be predictable and safe.
The technology that gives me a “nerd hard-on” this month is SDN WAN. Here is why.
When we spend millions of dollars on a network product we don’t actually expect it to work. That’s why it is completely normal to see job advertisement for a 5 day contract engagement to perform a validation that product doesn’t have any bugs. Think about the cost incurred by this company to check if this Cisco Nexus is actually fit for purpose.
When the sales grunt talks about investment protection, its sure sign that they have run out of features, functions or value propositions to sell you. But do you really need investment protection or is it just another revenue stream for vendors (and a cost for you).
Cisco announced another 6000 job cuts in the Q4 2014 Results announcement yesterday in addition to the 5000 job cuts announced last quarter. Cisco has (or had) approx. 75000 employes so that’s a lot of jobs (more than 20%) in a short period of time and this leaves me pondering the impact to the products […]
For the last 20 years, L2 tree-based network topologies meant that the only practical design methodology was to buy large, vertically scaled switch chassis for the core of the data centre. This limitation was largely due to the tree-structure forced on LAN networking by Spanning Tree Protocol. For every new device at point Access/1 we […]
Ethernet Hard Drives are coming. Nothing to do with networking.
In a recent project, I noted an astonishing difference in price of the optical and copper cabling assemblies associated with 10Gigabit Networking. I conclude that some companies are including a “license fee” in the cost of these components and making the overall cost harder to determine.
The performance of appliances is complex topic. There are four broad aspects of the dedicated hardware to provide the higher performance and three reasons why vendors like selling appliances instead of software VMs. I cover them here.