So I the company I work at has this mess for cables.

So I the company I work at has this mess for cables.
I'm supposed to figure out which cable goes where without touching any of the cables.
I have remote access to all switches and servers.
Is there an easier way to do this than manually writing down all the MAC addresses and cross referencing?
There are 13 switches and 45 servers

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  1. 3 weeks ago
    Anonymous

    Your switch should tell you what mac address is available where.

  2. 3 weeks ago
    Anonymous

    there are tools you can use to map out the network but probably take as long setting that up as just noting it down.

    • 3 weeks ago
      Anonymous

      What would those tools be? nmap?
      I'm doing it manually right now but I can almost guarantee that I'll have to do it again in the future.

  3. 3 weeks ago
    Anonymous

    Run your finger along each cable to see where it goes.

    • 3 weeks ago
      Anonymous

      >I'm supposed to figure out which cable goes where without touching any of the cables.

      • 3 weeks ago
        Anonymous

        Hover your finger 1 millimeter away from the cable.

        • 3 weeks ago
          Anonymous

          I'm 7 hours away from the cables.

          • 3 weeks ago
            Anonymous

            That's probably too far.

      • 3 weeks ago
        Anonymous

        Ask your boss if he's moronic. What kind of horrible mess is that, are those tiny 4-port switches part of your 13 switches?

        • 3 weeks ago
          Anonymous

          >are those tiny 4-port switches part of your 13 switches?
          Yes, there's two more in another rack
          I wouldn't say my boss is moronic. It seems to me the company just grew too fast to keep up.

          with dumb switches its impossible without physically being there to check

          There's like 3 dumb switches

          this
          unironically the solution is to pay a consultant $10k to install a 48 port managed switch and unfrick everything.

          6 of the switches are 48port managed cisco switches. 4 of them are managed netgear but the web ui isn't accessible.
          >the solution is to pay a consultant $10k to install a 48 port managed switch and unfrick everything.
          The solution is to get an low paid apprentice (me) to fix it.

          • 3 weeks ago
            Anonymous

            Well when you're done become a consultant, because that's exactly what you'll be doing, but you'll be getting compensated more appropriately.

          • 3 weeks ago
            Anonymous

            I mean if you are desperate you can use something like netdisco to map the l2 network (there are others that do network mapping but netdisco is free) but again dumb switches will make the map look weird
            A mapper will make your eyes bleed less than staring at mac address tables

          • 3 weeks ago
            Anonymous

            Your boss is a moron. There's no way you can unfrick that without experience of unfricking patching. You should outright refuse to do this because if you map it wrong, it's your head.

          • 3 weeks ago
            Anonymous

            Oh I'm not gonna fix it alone. Boss himself will be there with the rest of the team when the time comes to redo all of the cables.
            It's just my job to do the first mapping

        • 3 weeks ago
          Anonymous

          >Ask your boss if he's moronic.
          No need. He obviously is.

  4. 3 weeks ago
    Anonymous

    with dumb switches its impossible without physically being there to check

    • 3 weeks ago
      Anonymous

      this
      unironically the solution is to pay a consultant $10k to install a 48 port managed switch and unfrick everything.

    • 3 weeks ago
      Anonymous

      How much could be mapped?

      If op treats the switches like a hub, could they reasonably map most of the network?

      If they wanted to recreate the network do they actually need an exact mapping of the dumb switches at all?

  5. 3 weeks ago
    Anonymous

    Better get crackin' op. Also WTF are those shitty 4 port netgear switching doing there?

  6. 3 weeks ago
    Anonymous

    I see two unmanged switches in this picture
    you're not going to get far just using command line or GUI tools
    if they want you to map it you gotta be able to physically map them out
    i have to go through cabling messes all the time (pic rel)
    you'll be fine if the cables move and its probably the only way you'll get reliable mapping

    • 3 weeks ago
      Anonymous

      >you'll be fine if the cables move
      From experience, nope.
      The last time I was there I tried to manually map the cables and accidentally bumped one which resulted in the entire network going down for a couple seconds, which resulted in the "don't touch the wires" rule.

  7. 3 weeks ago
    Anonymous

    Tell your boss to get a patchbox so you and him won't have to do this another time.
    Also ditch unmanaged switches.

  8. 3 weeks ago
    Anonymous

    >So I the company I work at has this mess for cables.
    >There are 13 switches and 45 servers
    i used to work for a company that had 7 walls of racks, each wall had like, 10 racks, all with patch panels with everything under the sun from switches of different brands to routers to firewalls to servers. Shit was a fricking mess it looked like blue noodles dangling from walls you couldnt see

    If its all cisco, use CDP neighbor or something. We eventually got some service to map everything, i forget what it was but it required a frickton of manual effort

    • 3 weeks ago
      Anonymous

      how many of your coworkers said that CCNA and networking was a meme because of the cloud?

  9. 3 weeks ago
    Anonymous

    On the switches, a show lldp neighbors and show cdp neighbors will help

    The switches can also tell you their Mac address tables to ports, and what ports are uplinks.

    Next good stop would be the router (show up arp) and DHCP server. that'll give you Mac to ip mappings.

    Something like netdisco might help, but something to organize your notes like Netbox would be more helpful to unfrick this mess

  10. 3 weeks ago
    Anonymous

    OP the boss that gave you the task to sort this mess out is guaranteed to be the moron that let this happen in the first place. Apart from jiggling cables to see where they run there is nothing you can do to sort this mess without causing outages.

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