Why did vr0 link went down all of a sudden?

  • Hi Everyone,

    I haven't changed anything in vr0. I have been playing around with Firewall rule for WAN though. And all of a sudden my clients lost their ip. Here is what I have from Status:

    LAN	 interface (vr0)
    Status	 no carrier
    MAC address	 00:0d:b9:19:f8:50
    IP address  
    Subnet mask
    Media	 none
    In/out packets	 41505/48873 (8.50 MB/23.31 MB)
    In/out errors	 0/0
    Collisions	 3476

    And here is what I have from the log:

    Jul 29 21:06:24	last message repeated 7 times
    Jul 29 21:16:32	last message repeated 3 times
    Jul 29 21:22:10	last message repeated 2 times
    [b]Jul 29 21:29:53	kernel: vr0: link state changed to DOWN[/b]
    Jul 29 21:36:00	check_reload_status: reloading filter
    Jul 29 21:37:24	check_reload_status: reloading filter
    Jul 29 21:39:58	check_reload_status: reloading filter
    Jul 29 21:42:25	last message repeated 2 times
    Jul 29 21:54:07	dhcpd: Internet Systems Consortium DHCP Server V3.0.7
    Jul 29 21:54:07	dhcpd: Copyright 2004-2008 Internet Systems Consortium.
    Jul 29 21:54:07	dhcpd: All rights reserved.
    Jul 29 21:54:07	dhcpd: For info, please visit http://www.isc.org/sw/dhcp/

    This is not really cool. Can someone please shed light as to where I can check for this problem before I bulldozer over pfsense as an unstable DHCP router.

    Thanks a lot

  • This turned out to be due to a loose cable on the router vr0 port end. I don't think it was any service down fault. However, would the logs anywhere indicate if a cable is un-plugged rather than service went down?


  • Link down means the NIC can't see the signal from the station at the other end of the cable - broken cable is the most likely cause but could include broken socket, broken NIC, loose connection etc.

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