Disabling Vodafone autoprovisioning on Snom 821
I bought a nearly new Snom IP phone on eBay, but it was getting autoprovisioned as a Vodafone device. I wanted to use it as a SIP phone on another provider’s network, so needed to get rid of this.
I’ll try to write down the steps I followed, but I tried quite a few things so there may be inaccuracies.
Basically this phone tries three ways to autoprovision itself:
1. Redirection – it goes to a host run by Snom, is redirected to a Vodafone host and autoprovisions from there.
2. PnP – I think this is where it multicasts for a configuration server.
3. DHCP – where it receives details of the configuraiton server from DHCP options it receives with its IP address.
Redirection is the first one it tries by default, so you need to stop this happening. Snom say on their forums that they can’t do this for Vodafone devices, which must be a legal thing between them and Vodafone, because they are able to do it for Snom phones that are auto-provisioned on other providers. In the latter case a simple request on the forums with the phone’s MAC address appears to be sufficient.
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Video: Routing over VXLAN
Even though I wrote about the challenges of routing from VXLAN VNI to VLAN segment on a certain popular chipset a while ago, many engineers obviously still find the topic highly confusing (no surprise there, it is).
Maybe a video is worth a thousand words ;) – I published the part of recent VXLAN webinar where I described the issue in as many details as I could.
IPv4 QoS Markings Calculator
This is a quick calculator I came up that I could use in the CCIE lab to translate between various IPv4 header QoS markings. As long as I could remember how to draw out the calculator, all I had to do was some basic math and I could translate between markings quite easily.
Establishing the Big Data Connection
Many network vendors will tell you that their network equipment is built for Big Data. However, once deployed, do you have enough Big DataAre We The Problem With Wearables?
Something, Something, Apple Watch.
Oh, yeah. There needs to be substance in a wearable blog post. Not just product names.
Wearables are the next big product category that is driving innovation. The advances being made in screen clarity, battery life, and component miniaturization are being felt across the rest of the device market. I doubt Apple would have been able to make the new Macbook logic board as small as it is without a few things learned from trying to cram transistors into a watch case. But, are we the people sending the wrong messages about wearable technology?
The Little Computer That Could
If you look at the biggest driving factor behind technology today, it comes down to size. Technology companies are making things smaller and lighter with every iteration. If the words thinnest and lightest don’t appear in your presentation at least twice then you aren’t on the cutting edge. But is this drive because tech companies want to make things tiny? Or is it more that consumers are driving them that way?
Yes, people the world over are now complaining that technology should have other attributes besides size and weight. A large contingent says that battery life is Continue reading