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Author Topic: Andrews & Arnold’s busiest evening ever  (Read 2157 times)

Weaver

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Andrews & Arnold’s busiest evening ever
« on: September 14, 2016, 03:02:16 PM »

Quote
“Apple released iOS 10 this evening, and looking at our traffic stats customers started downloading it at 6pm on the dot! Our network is coping with this increased load but it does look like it'll be the busiest evening we've ever had.

Resolution   

Looking back over the course of the evening some BT connected lines look mostly unaffected, however some TalkTalk connected lines suffered with about an extra 30ms of latency and a decrease in download speeds. This was caused by one of our links to TalkTalk running at full capacity.

We already have plans in motion to install new links in to TalkTalk's network which will increase our capacity tenfold.”

From: https://aastatus.net/2290
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aesmith

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Re: Andrews & Arnold’s busiest evening ever
« Reply #1 on: September 15, 2016, 11:42:02 AM »

We had an emergency call yesterday from an academic customer, all their Ipads were simultaneously downloading the new software and maxing out their Internet connection so nothing else could be done.   It didn't seem to be possible to rate limit directly on their WLAN, so we ended up sticking a rate limit (shaping) on the switch port feeding the controller.    There's got to be a better way, we've numerous times had customers reporting network-wide issues then found similar, normally Windows updates all downloading simultaneously and using all their WAN bandwidth.
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Weaver

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Re: Andrews & Arnold’s busiest evening ever
« Reply #2 on: September 15, 2016, 01:10:19 PM »

Apple should be adding a random offset to the start time for these downloads. They should also be downloading as slowly as possible. Microsoft now cross-load updates from one box to others across a lan. Apple could learn from that, that would make a big difference in that particular case.
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j0hn

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Re: Andrews & Arnold’s busiest evening ever
« Reply #3 on: September 15, 2016, 03:15:59 PM »

Windows 10 offers the possibility of sharing updates over WAN, not just the LAN. I must say I made sure that was disabled immediately.  Buy your own bandwidth Microsoft!
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Talktalk FTTP 550/75 - Speedtest - BQM

aesmith

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Re: Andrews & Arnold’s busiest evening ever
« Reply #4 on: September 15, 2016, 07:01:49 PM »

In a business network Windows updates would normally be managed by a server, so the PCs don't all download from the Internet.  It can still bring down a private WAN, the example I'm thinking of had 30+ branches on a pretty decent WAN for both voice and data, on "the day of the update" it pretty much crippled their line of business application across all branches.   As suggested above, some sort of random offset would have helped.   
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