Early Start
August 31st, 2010I was in at work for 5:40am this morning as part of replacing two older servers that provide the network addresses to the new phones that the university uses.
I’d planned the deployment and prepared the hardware for the changeover. Without getting too technical it was roughly:
- check I’m all ready
- disable the service on the old servers
- copy the active information across to the new servers
- tell a bit of networking equipment to forget about the old servers
- enable the service on one new server (it can run on one or many servers)
- check all the phones work and the world hasn’t ended – preferably before 7:30
- carry a second server across town to a room with no windows
- set it up also running the same service in case the first building burns down
- unplug the old server and carry it back
There’s more to it but you get the rough idea. It all went without a hitch.
I’ve cancelled my CCNA second part exam (ICND2) as it’s currently too busy to get meaningful periods to revise before the exam date on the 17th and it’s too close now to do anything but cram for the exam, which isn’t the way to pass – I want to pass because I know the subject area from learning and experience, not from memmorising enough to get a pass without properly understanding the subject area.
I am still revising when I can and recently produced an article for our various department/college IT support staff on using a networking technology covered in the exam called spanning tree. I’m not so hot on network hardware compared to servers and scripting (code), but I need to work on this and enjoyed writing the article. I’m also doing various exercises to speed up my binary arithmatic (e.g. converting “137″ into “10001001″ and certain other operations) as the exam I’m revising for requires you not only to make networking calculations based on this but also be fast due to the time constraints of the exam.
At work I did a second IPv6 talk to about 45 IT staff and gave out some standards we want them to meet if they want to take part in the early testing of IPv6 with us, mainly so it’s easy to troubleshoot issues with their IPv6 deployment without other pre existing problems confusing the issue.
The actual IPv6 deployment itself is a little closer as we’ve had permission (via a little gentle pressure) from our security team to go ahead with enabling IPv6 to our core services so that we can start enabling it on services we provide to the university (which other peoples networks depend on). The security team aren’t quite ready for us to deploy it to a unit but this gives us a lot to get on with.
So my next tasks coming up are
- replacing the DNS servers – that turn names like “www.google.co.uk” into number that computers understand and can talk to (and back again)
- replacing the DHCP servers – that tell peoples computers what settings to use when they plug their laptop in or turn their workstation on
- enabling IPv6 on all our core network services
- hunting for switch (network device) tasks as part of my exam revision
You’d know if either of the first two went wrong as it would take the university offline and hence might actually make the news. That won’t happen – luckily it should be reasonably straight forward with some planning and testing beforehand plus the changeover will be quite gradual (part of a service at a time) rather than the ‘big bang’ approach used for this mornings work.
I’m quite looking forward to the third one but have to do the first two before as the replacements are urgent – I’m not happy about the hardware and software the service is currently on as it’s too old. We had an odd ‘blip’ with the existing service about 3 weeks back that affected members of the university, I fixed the immediate issue and did the service announcement to IT support staff about what had happened but I don’t like the idea of it happening again.
After all the above is done it’ll probably be Christmas and time to take off my shoes and take a deep breath, then aim for a complete and convincing pass on my exam. I suspect there will then be some other work that crops up, but it’s what keeps me employed and it’s fun. The work is just the right balance of challenging.
Outside work I’ve lost weight from 84.5kg (April) to 79kg although I seem to be stuck at the latter, I’ve been on it about 2 months now. If I lost another 5kg that would probably be about right. I’ve been swimming a lot in the evenings at the local council gym but not too much riding.
I did recently get to ride the Ridgeway South of Oxford with a friend – it’s quite flat (which is just as well as my bike was stuck in only the big cog at the front and I’d forgotten since I’m always on the road riding to work in the big gear) but it felt great to actually ride off road again, no matter where.
The speed of the device isn’t an issue for me, the page turns (the eink screen takes longer to update than a LCD screen) take about as long as to turn a normal page. I can see impatient people would get cross with it, but we’re into the third paragraph on this page so they will already have headed off to another site and wont be reading this advice.
Barnes & Noble has it’s own ebook store – due to imposed restrictions I can’t purchase ebooks using either the nooks interface or by browsing the B&N website because my billing address is outside the USA. I tried anyway but was rejected at payment time, the site refused to sell to me. I understand them not wanting to field support requests for the Nook outside the USA, where they don’t have support for the roaming wireless abilities however I think the basic export restrictions on the ebooks to a standard B&N account not in the USA are annoying.