6 ms·

Cisco IOS, NXOS, IOS-XE and IOS-XR are C/C++.

• Yizahi 8y ago
  I wager there are some small python/bash/perl etc. scripts in use in Cisco firmware, tomorrow headlines - "World runs on Bash! Apocalypse is nigh!"
  • paulie_a 8y ago
    Cisco gear has enough problems regardless of programming language. They could start with not hard coding passwords. I will never trust them again.
  • technion 8y ago
    Versions of IOS had embedded scripting available via TCL. It's likely that's the language used internally too.
  • jwbensley 8y ago
    Yeah, if you drop in a Linux shell on their various platforms you can find shell scripts dotted around. The boxes run Linux so that isn't surprising really.
    • deleted 8y ago
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    • topranks 8y ago
      Linux runs the control plane. The programmed routes go into hardware on the bigger systems, and either way there is no Linux kernel routing involved at all.
      • jwbensley 8y ago
        I didn't say that Linux was involed in the forwarding plane or any routing. I was responding to Yihazi's comment that shell scripts are likely in use somewhere. This entire thread is in relation to the control-plane as that is where Cisco use Erlang. Scroll up much? Edit: If I'm not mistaken I think Linux is actually used in some platforms for routing the out of band management interface, but not transit traffic.
  • deleted 8y ago
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