My last blog post for 2011! Past days I’ve been playing games mostly, and reading some CCDA stuff. No labs for the weeks to come, I have to redesign my home lab first and integrate the access server.

I did still learn some small things this week:

  • A Cisco device without ‘ip routing’ enabled (like an unconfigured layer 3 switch) needs the command ‘ip default-gateway’ to be reachable from another subnet. But once ‘ip routing’ is enabled, this command no longer works, and it needs a default route for similar behavior.
  • Cisco PoE endspan devices (PoE capable switches) use PoE mode A, while midspan devices (PoE injectors) use PoE mode B.
  • I learned what SSL offloading is, and that it can be used together with an IDS/IPS for improved security.
  • 10 Gigabit Ethernet requires Cat6A UTP, and runs up to 100m. For 40 and 100 Gigabit there’s no cabling standard as far as I know.

Well, that’s it. Happy holidays to everybody!

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