Ebay servers down?

still fine here

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Kelt said:
You're glad that there is a major network problem affecting millions of people and not just you?

Cool
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seems perfectly reasonable to me. It might be "a shame" people can't get on ebay (shock horror) but at least he knows he doesn't have to spend his time trying to sort a problem on his PC.

B@
 
my website and email were not working this morning so I rang my webhost and they confirmed there were issues with certain sites with certain isps

I am with BT business and can access eBay no problem
but my own website I cannot access

on 3G (on EE) I can access both my website and my email.

webhost said things were pretty manic at their end trying to get things sorted but ultimately it was not an issue at their end, I would suggest Daz has the answer (not that I understand what he means)





daz said:
There was a routing update this morning that pushes the global routing table to ~512K routes which we think pushed a lot of routers over the edge.
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Argh that's annoying, it's down for me in work, but works if I connect through to my home connection. I've got a load of items on there that are finishing today so I hope they sort it in the next couple hours or I'm going to lose money!
 
just had an email from my webhost

For those who are interested, the technical explanation…

The global routing table is a ‘map’ of each possible destination on the internet. Every large network operator (such as ourselves, or the ISP you use to connect to the internet) holds a copy of this, or multiple copies in our case. This is what enables every computer on the internet to reach every other computer.

Over the past two decades the routing table has been increasing in size, due to new ipv4 addresses being used and existing ipv4 address ranges being split (meaning that 2 consecutive ranges might have different paths). Today it hit 512,000 routes. This is a magic number as it’s an inbuilt limit in many common routers and switches.

We had pre-empted this. Most of our routers/switches already have a higher limit and we have recently spent £250,000 on network upgrades to improve the rest of our network. These had not yet been installed as we believed we had room to spare. However, last night there was a sudden increase in the number of routes being announced to the world and at 9AM we hit the limit.

Due to human factors it took us approximately half an hour to find the cause of the issue. At that point we applied a fix on the only router we believed was affected. This took effect after a reboot (which caused approximately 60 seconds of packet loss as indicated on the graph) and the majority of people who could not access our network were then able to. However some users were still reporting problems so we continued to investigate. We believed the issue may lie elsewhere as customers were also reporting issues reaching websites such as eBay and Skype but, despite the lack of any log entries to indicate, it turns out another of our Cisco routers had also hit its routing limit. The same configuration change was applied to that router and, at that point, the remaining people still having problems accessing their site were now able to again.

It seems many other high profile ISPs also suffered the same issue today and most have now fixed their own networks.

Over the next 2 weeks we will be replacing all the affected routers with brand new Juniper devices which can hold enough routes to cover us for the next decade.
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