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You know someone is a real hardware guy when he calls backup, monitoring and logging non essential. Also a bit confused about the 2960Ss and the choice of Cisco in general. I'd never thought Stack Overflow ran on Network Equipment, what I'd describe as consumer hardware in networking.

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To clarify a bit: I meant they are non-essential to serving the sites. If they all went offline, visitors to Stack Overflow would not be aware.

I thought so, but I liked your phrasing.

What I sadly don't get is the hierarchy of your routers and switches by the pictures and the lack of QSFP+ utilization as well as the amount of copper. What's the reason behind the copper sfp transceivers in the ASR-1001[0]?

[0]https://nickcraver.com/blog/content/SO-Hardware-Network-NewY...

The 2960s seem to be in the background for the management side of the network, doing ikvm and the like, therefore don't need 10 gigabits. Also, the copper in the core routers seems to be more a case of the routers still having enough bandwidth for the site, just needing more bandwidth, thus more ports aggregated. 10gig ethernet's a good amount cheaper than 10 gigs of fiber and works just as well for the short run they're doing..

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