Cisco IOS TFTP Server limitations and CUCM Load Server

Back to the day job today (yes I know it’s Saturday – but some things can only be done on a weekend!), so no study update. However, here I am upgrading CUCM (major version upgrade), and I am working with three remote locations on high latency links to a centralised deployment. To cater for this our phone firmware is loaded on IOS gateways in the locations. This is accessed thanks to the load server parameter on the phone device configuration. This serves two purposes: 1. It causes the phones to load firmware locally and; 2. It prevents the phone from attempting to upgrade over the WAN if the firmware is not on the load server (handy if you want to add a newer firmware than provided by the upgrade – which you need to do after the upgrade).

The problem with this setup is, what happens when all the phones reset due to the switchover of CUCMs after the switch version ? Well it seems that about 10 phones upgrade from the gateway and the rest re-register. I’m not sure if this is a hard limit within IOS, but I have consistently seen that through this upgrade – so here I am resetting the device pools to ensure that all the devices are eventually upgraded (and there’s another 10 phones done!).

Load servers are still a great tool in a small deployment – but maybe I should look more closely at peer-firmware upgrading (which seems like magic). Oh yes – and it takes about 7 minutes to upgrade each of the 10 phone batches!

T-1 month and counting.

So this time next month I should know if I am a CCIE. April 14th is rapidly approaching, so how am I going ? Well, I have booked my activities for the day after the exam – golf with 2 of my best mates in the world at Royal Pines resort followed by dinner with our other halves. So no matter what happens in Sydney, I’ll be actively engaged in a pleasant activity the next day.

And the study ? Well I seem to have had a bit of a boot camp hangover (plus there have been other distractions – six nations rugby, family events, work etc.) I got back on the horse this weekend and had a bash at IPExpert volume 2 lab 6 – but only for 4 hours (more distractions). I had the expected issues: setup ntp then fix replication, MLP QoS reload router no more connectivity bug and a few other things I can’t remember, but dealt with appropriately. The difference this time compared to earlier in my study was that I knew how to deal with each issue and was ready for the expected problems. I feel I have a much better handle on WAN QoS now. I still don’t know how you can deal with the reload bug in the lab if the proctor reloads your router though – maybe just leave a note in the pod ! (or maybe its a slight variation in the version of IOS used by IPExpert vs. the real lab!).

So what is the plan for the last month ? Well, more family events over the next two weekends mean I will only be doing full labs Sunday this weekend and Saturday next weekend. I start my holiday from work on the 2nd April, so I will be having my own 5 day lab boot camp from then until we fly to Oz. I intend to spend 10 to 12 hours a day each of these days as it will be the last serious lab time I get before hitting Sydney and the exam.

My chances of passing ? I’ll tell you in a month!

What day is it ?

I’m back from San Jose now after my IPExpert boot camp. I woke at 3 this morning (after going to bed at 8pm), it is of course the first day back (I think it’s Monday!) It took my until Tuesday evening last week to work out what day it was (Tuesday was a good day – everything I did that day worked) after arriving in San Jose on Saturday. So I should be back to normal by Wednesday I think!

So how was it ? Well, in a nutshell, it was the most enjoyable, most intense, most eye-opening training course of any type I have been on, and now I feel much more comfortable about what I need to achieve in the next 6 weeks before my exam. So let’s break down what was so good about it.

First, the class – my fellow CCIE wanabees (including some CCIE alreadys) – the stamina, enthusiasm, knowledge and experience in that room would have made quite an exceptional Cisco-partner organisation! Normally in a class you expect people to be quite 9-5 about it. Not here! Everyone was in (except Monday) around 8am and didn't leave (except Friday due to flights etc.) until at least 7:30pm if not later – and this was every day!  This didn't just apply to those who’d funded the trip themselves. This was one committed (or is that committable) bunch, and a great bunch too.

The content – well the website states that there are 4 days of lecture/lab and one day of full lab. Forget that! Vik stated up front that most of us would not get to go through that one day lab at the end, as there was just so much content to cover, that it was a better use of time to do this than the 1 day lab (we received the lab and solution guide so no great loss). The real world – forget that too. This course is about passing the CCIE lab, and that is not the real world. Many times throughout the week you would think – I’d never do this in the real world – and then you remembered where you were. Partition <None> anyone ? Would I recommend this course to someone not attempting the lab ? No! It is too detailed, and otherworldly. The number of gotchas that came up throughout the week, I lost count (but made copious notes!). “What protocol provides the voice vlan to a phone ?” – think about that carefully before you answer – and be pedantic!

The man – Vik is a Liverpool Fan – that’s the last bad thing I’ll say about him (I’m an Everton Fan!). His ability to engage a class is as good as I’ve seen. He explains topics in such detail and with such authority that it is easy to digest and learn from him. We were quite a clever bunch, but we struggled to find anything that could knock him out of his stride – if we had a question he had the answer. He had a knack of knowing when we were all starting to flag and had hit our knowledge absorption limit – at which point we take a “5” minute break (I think he needs a new watch!)  His explanation of 3750 QoS breaks it down in such a way as you go – ahhh!

So was it worth it (it being the not inconsiderable monetary sum I shelled out for flights/accommodation/food/unpaid work time!) ? Well, as I sit here on the train into the office I feel it was. I’m definitely better prepared now – in that I know where I am at, and where I need to get, but also how to go about getting there. The proof will be in the final result in April – although passing first time is not the be-all, it would be nice! As I’ve said before, I don’t want to go to Brussels!

Yes I knew the way!

My trip to San Jose for the IPExpert boot camp last week gave me my first taste of California. So on the two down days I had (Sunday and Saturday at either end of the trip), I had a look around San Francisco.

First however – how do you get to San Jose from SFO – easy, just jump into a shared van at the airport and then go on a geeky magical mystery tour until you get to your hotel. Travelling down the highway into Silicon Valley you see all the names of the places where those big companies you know the names of, and some other places that you go “oooh, I didn't know that was there!” (at least as a geeky Brit on their first trip anyway!) Mountain View, Cupertino, Moffett Field, Palo Alto. Hmmm!

If you are ever in San Jose, check out Gordon Birsch for a beer and a meal , a fine pint (or 3) of the seasonal bock, and a good feed – and thus ended my travelling day 26 hours after I woke up.

Awake at 4:30 hmm isn't US TV poor at this time of the morning – breakfast – UK football streamed over the internet, then time to catch the train to San Francisco. Firstly the San Jose VTA light rail to San Jose Diridon for the CalTrain to San Francisco – on time – nice! (Although given how short the change time was should have gone the opposite direction from Metro to Mountain View which is what I did on the way back) The fast train (baby bullet!) gets from San Jose to San Francisco in just about an hour (the stopper takes 1 and 1/2 hours!) and I managed to make it. Just! I’d decided to take an open-topped bus tour, but I had forgotten my coat, and it was colder than anticipated. I can however recommend it as the best way to see everything if you are very time limited (just don’t get off the bus unless there is really something you want to do!)  I had been looking forward to seeing the Golden Gate Bridge since I booked the trip – here it is!

That’s right – cloud arrived just before I did! So rather than get off I stayed on the bus and went over the bridge. It was much clearer on the northern side – but no photo of the whole bridge without any cloud. This is the best!

Down to Fisherman’s Wharf – fresh crab for lunch/dinner and then back to San Jose (CalTrain, VTA etc.). Back to the hotel in time to get a good night’s sleep before the course started.