Comments on: The Network on Wheels – Raising Funds for Paralympic Athletes http://blogs.cisco.com/csr/the-network-on-wheels-raising-funds-for-paralympic-athletes/ Thu, 20 Jun 2013 09:05:55 +0000 hourly 1 By: Stephen Speirs http://blogs.cisco.com/csr/the-network-on-wheels-raising-funds-for-paralympic-athletes/#comment-692022 Stephen Speirs Mon, 05 Nov 2012 10:05:01 +0000 http://blogs.cisco.com/?p=89236#comment-692022 Good stuff. One thing I forgot to mention in the article is that – as you may expect – we found the weather can have some impact on the throughput rate – as you would get with any wireless technology to be honest. Two good articles on this are at:

http://www.aowireless.com/blog/bid/34066/Does-Weather-Effect-Wireless-The-5-Misconceptions-Part-1 – stresses the importance of good design and installation – for example, if the wind “moves” the antenna (or satellite) away from the optimal path

http://www.ieee.li/pdf/viewgraphs/fundamentals_satellite_communication_part_2.pdf .. talks about the impact of rain in particular on attenuating the signal from the satellite in particular.

Again you will know a lot more about this that I do!

Stephen

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]]> By: Rick Locke http://blogs.cisco.com/csr/the-network-on-wheels-raising-funds-for-paralympic-athletes/#comment-691993 Rick Locke Mon, 05 Nov 2012 09:21:48 +0000 http://blogs.cisco.com/?p=89236#comment-691993 Yes, it will be shared. So we will being including QoS in the configuration.

/Rick

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]]> By: Stephen Speirs http://blogs.cisco.com/csr/the-network-on-wheels-raising-funds-for-paralympic-athletes/#comment-691647 Stephen Speirs Sun, 04 Nov 2012 21:39:01 +0000 http://blogs.cisco.com/?p=89236#comment-691647 Good to hear Rick. Is the Caprock link shared with other network resources? If so – and I know you will know this – we’d advise you to ensure QoS is setup to protect that video traffic.

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]]> By: Rick Locke http://blogs.cisco.com/csr/the-network-on-wheels-raising-funds-for-paralympic-athletes/#comment-691579 Rick Locke Sun, 04 Nov 2012 19:24:23 +0000 http://blogs.cisco.com/?p=89236#comment-691579 Thanks a lot Stephen! Just what I needed.
We will be deplyoing an EX90 to one of our offshore rigs. We have a 3Mb/s upgrade coming from Caprock.
So I expect performance should be ok.

/Rick

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]]> By: Stephen Speirs http://blogs.cisco.com/csr/the-network-on-wheels-raising-funds-for-paralympic-athletes/#comment-689307 Stephen Speirs Thu, 01 Nov 2012 15:46:52 +0000 http://blogs.cisco.com/?p=89236#comment-689307 Hi Rick
Great question. The satellite link was a 3Mb symmetrical link and we tended to keep the endpoints limited to a 1Mb call to keep costs more reasonable for our partner, Harris Caprock, who were paying for the satellite costs – thanks guys at Harris Caprock! The exception was when we did the launch TelePresence with Tim Reddish. Candidly, in advance of the launch at the first camp site – - with 700+ participants and 100 or so event support staff looking on – we were a little worried on that one! For the launch (and the picture for this is in the blog), we went up to 1.5Mb on the link. Additionally, as a precaution, we had shut down all the wireless access whilst running the session. It did work very well, we were very pleased, and our worries were unfounded.

Mark Ley on our technical team supporting the NOV Van did call back home on the EX90 just about every evening and he tells me that he didn’t have any perceivable issue with the lag (~ 560ms RTT to the ground station in Aberdeen). He did experience a little pixelation every now and then, but only if waving arms around!

Just goes to show that this Cisco TelePresence gear is pretty well designed if you ask me! I have been told in the past that the original design focused on mitigating such delay issues, so I guess this is a good proof-point.

Hope this helps!
Stephen

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]]> By: Rick Locke http://blogs.cisco.com/csr/the-network-on-wheels-raising-funds-for-paralympic-athletes/#comment-689189 Rick Locke Thu, 01 Nov 2012 11:31:40 +0000 http://blogs.cisco.com/?p=89236#comment-689189 Thanks for sharing. I would be interested in hearing what the bandwidth was for the sat link from Caprock.
Also, how the EX90 performed with the high delay over the link.

Thanks,
Rick

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]]> By: Stephen Speirs http://blogs.cisco.com/csr/the-network-on-wheels-raising-funds-for-paralympic-athletes/#comment-689124 Stephen Speirs Thu, 01 Nov 2012 09:24:04 +0000 http://blogs.cisco.com/?p=89236#comment-689124 Glad you enjoyed reading, Vimal – thanks!

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]]> By: Vimal N http://blogs.cisco.com/csr/the-network-on-wheels-raising-funds-for-paralympic-athletes/#comment-688877 Vimal N Wed, 31 Oct 2012 22:21:08 +0000 http://blogs.cisco.com/?p=89236#comment-688877 Really epitomizes a communication network on wheels. Thanks for sharing!

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