GigabitEthernet down/down

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Solution 1

Issue the shutdown first, then issue the "no keepalive" command, then bring the interface back up. It should show up/up at this point and hold that state indefinitely (for a GE, anyhow). Turning keepalive tracking off while the interface has already marked itself down isn't going to bring it up.

Solution 2

So the interface is down and the line protocol is down.

Is the interface administratively down? Use the no shutdown config command to enable the interface. (Also make sure a good cable it plugged in)

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Michael S
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Michael S

Updated on September 18, 2022

Comments

  • Michael S
    Michael S 3 months

    I have a huge amount of data that I need to process to allow for a data analysis. Currently, the data is in this form, and my goal is to use VBA to produce this.

    Any ideas?

    • Dan
      Dan over 10 years
      Is the port shutdown?
    • HopelessN00b
      HopelessN00b over 10 years
      Wait, does "nothing connected to the interface" mean that there's no cable in the port? If so, that's why. Plug something in to it and see if that doesn't change the status.
    • Bulki
      Bulki over 10 years
      Agreed, by plugging something in, the status goes to "up up". But when testing on 2 locations, it's preferable to do this remotely. A "no keepalive" should tell the router that no keepalive packets are needed to give an "up" status.
    • Sirch
      Sirch over 10 years
      How do you hope to get an initial 'up' without plugging it in?
    • kralyk
      kralyk over 10 years
      What model? I'm pretty sure their switches and most of their routers don't bring it "UP" anymore with the no keepalive option like they used to.
    • Bulki
      Bulki over 10 years
      Cisco router 1921
    • Bulki
      Bulki over 10 years
      I've found a link with the same problem mentioned, no answers doh: supportforums.cisco.com/thread/2130479
    • Bulki
      Bulki over 10 years
      A Cisco Router 1921, apparently Cisco implemented it this way in these routers. The only solution is to use loopbacks instead.
    • Clusks
      Clusks about 6 years
      Hi, Michael S, are you able to show us what you've tried so far in VBA or what exactly you're having a problem with?
    • Jean-Pierre Oosthuizen
      Jean-Pierre Oosthuizen about 6 years
      Why not just use filters. Highlight the first row and then in the Excel Data tab select filter
  • Bulki
    Bulki over 10 years
    No shut and no keepalive have been done on the interface. (otherwise it would say "administratively down" indeed)
  • Sirch
    Sirch over 10 years
    Then I'd seriously consider hardware/cable failure.
  • Bulki
    Bulki over 10 years
    I've tested further by connecting a device to the router. This time it says "up up" (is normal behavior), nothing wrong with the hardware.
  • user3789902
    user3789902 over 10 years
    so, if you get up up, then what's the problem?
  • Bulki
    Bulki over 10 years
    The problem is that I can not test the connectivity without having a physical connection. This is possible with the "no keepalive" command normally, but in this case it didn't work, status remains on "down down".
  • Bulki
    Bulki over 10 years
    using the no shutdown and no keepalive after still gives a "down down" result.
  • rnxrx
    rnxrx over 10 years
    This should work - I even verified it on a 7200 I had lying around. What model of router is in use and can you post a (sanitized) copy of the interface's config stanza?
  • Bulki
    Bulki over 10 years
    A Cisco Router 1921, apparently Cisco implemented it this way in these routers. The only solution is to use loopbacks instead.
  • Michael S
    Michael S about 6 years
    Thanks so much! I'll try this out first thing in the morning. Best wishes.