More enterprises are deploying SDS, but they sometimes run into problems related to support and scalability.
For those following the VRF Series, we currently have a topology built that consists of a segmented Layer 3 first hop network and remotely networked by carrying the isolation from the BrWan router to Main. This article covers, shared services, the next step in our journey to understanding VRFs for Segmented Layer 3 Networks.
The configuration focus is solely on the router Main. The shared services VRF that will be created could serve as a place to connect something that all other VRFs must have access to. Organizations should evaluate their requirements closely before deploying this configuration.
An organization that requires stateful inspection between two areas may choose to connect two or more VRFs together using an L4 or Next Generation Firewall (we will cover this in Article 5). The security ramification of having a shared services VRF, as described in this article, is that devices connected in this area could be used as a proxy into other areas. Therefore, careful planning and proper device level security is important prior to deploying this type of architecture.
The technologies covered here include:
The logic of Continue reading
As many of you know, I was born in Turkey. And unfortunately, the educational system of that country is very weak. And guess what: If you can’t afford to go to private school in Turkey, you may not be able to learn English in the government school. However, if you are a very diligent student, […]
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The upgrade from Space platform 15.2 to 16.1 is one of the worst procedures I’ve seen in quite a while. It is complicated because the underlying CentOS is being upgraded at the same time, so I guess that’s part of the reason, but still, it could be a lot slicker and better tested.
In summary, you have to apply a couple of patches, the second of which backs your 15.2 data up somewhere else – ideally over SCP to a remote server. You then shut down your 15.2 VM, install a fresh 16.1 VM with the same IP addresses, and restore the data to it.
Sounds easy, but the 16.1 installation part can generally only be done by the customer’s VMware admin because it needs console access. So you’ve got to rely on them following lots of instructions quite well.
Recently a customer experienced some kind of failure in the restoration part, leaving me with a fresh installed 16.1, but no data. I SSHed on to the VM and could see the standard menu, but wasn’t offered any option to attempt another restore. After digging around for a while, I found Continue reading
Another “public cloud isn’t for everyone” story:
By charting Office 365’s new subscribers using a trailing 12 months — the latest quarter plus the three previous — to eliminate seasonal spikes, the suite’s waxing and waning over the past four years becomes apparent. From its Q1 2013 debut until Q4 2015, Office 365 subscriber growth was always steady, sometimes spectacular.
Solid approach to charting and yes, Office 365 did well but:
After Q4 2015, however, the trailing 12-month numbers fell, a decline fueled by the plateau of 0.9 million each quarter from the second onward. That resulted in a gain of just 4.3 million subscribers throughout 2016, a reduction of 62% from the year before.
Oh, the path to public cloud isn’t always a growth market? That’s not the story from the clouderati. Oh dear.
New Office 365 subscriptions for consumers plunged 62% in 2016 | ITworld : http://www.itworld.com/article/3162708/enterprise-applications/new-office-365-subscriptions-for-consumers-plunged-62-in-2016.html
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In Episode 69 of Software Gone Wild we discussed ways of increasing visibility into VXLAN transport fabric. Another thing we badly need is visibility into the virtual edge behavior, and to help you get there Iwan Rahabok created a set of vRealize dashboards that include the virtual edge networking components. Hope you’ll find them useful.
Full disclosure : I was lucky to be among a group of networking influencers invited to Silicon Valley to visit some networking companies and see what they were offering to the market. I was flown out and given accommodations at the expense of Gestalt IT – the company that organized the event. I was given some swag by each company, but I was never paid to write a positive review on the product. Heck, I’m not even expected to write at all.
Think about the fastest switch in your network and why it’s so fast. Traditionally, it’s because the manufacturer has developed a very efficient ASIC that does switching very well (give me some leeway here and forget about routing, encapsulation, etc.), but it really can’t do anything else. Want a new switching feature? Well, your switch can’t do that if the ASIC doesn’t support it. No big deal – the manufacturer just needs to make a new ASIC that supports it, right? This sounds simple, but, generally, this is a many-years process and requires a hardware update on your end. This is not a good solution in a world where new features and technologies Continue reading