invalid subnet mask set 255.255.255.255

Discussion in 'Server Networking' started by Mike Brearley, Jun 24, 2005.

  1. I have a device that the vender is telling me the only way to change it's
    network settings is by telnetting into it. They have a program that can
    connect via serial to 'view' it's settings, but that it, just view.

    Subnet mask has somehow been set to 255.255.255.255. IP is 10.103.1.40,
    gateway is 10.103.1.8.

    Is there anyway to get into this via telnet? Specific ip/subnet/gateway
    settings I'd need to set on the pc connecting to it?

    I've tried setting an ip of 10.103.1.41 and a range of different subnet
    masks, but nothing let me even ping the device. The only thing that gives
    me hope is that after pinging it, its MAC address shows in my arp table.

    Any help would be greatly appreciated.

    --
    Posted 'as is'. If there are any spelling and/or grammar mistakes, they
    were a direct result of my fingers and brain not being synchronized or my
    lack of caffeine.

    Mike Brearley
     
    Mike Brearley, Jun 24, 2005
    #1
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  2. Mike Brearley

    R. McCarty Guest

    Which Vendor & Model device ? - Broadband Reports forums are
    usually a good resource for configuring devices. Usually somebody
    there has prior experience with most hardware.
    http://www.broadbandreports.com/forums
     
    R. McCarty, Jun 24, 2005
    #2
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  3. I highly doubt anyone will have experience with this particular device,
    that's why I asked the question as a generic network question and not device
    specific. It's a RS232 LAN Converter from Westerstrand Time Distribution
    out of Sweden. My vender first had this issue with the first lan converted
    they sent. They replaced that one and after I received the new one, I set
    my settings, saved them, then couldn't access the device anymore (just like
    what happened with my vender on the first device). After about 2 weeks of
    very very slow email conversation, they finally gave me a propgram that
    could read the settings through a serial connection. That's when I noticed
    the invalid subnet mask. And the thing is... I never touched the subnet
    mask when I was setting it up for our network as it was already correct
    (255.255.255.0).

    I'll try the forum you suggested, but still would like help here as well if
    anyone out there can help.

    --
    Posted 'as is'. If there are any spelling and/or grammar mistakes, they
    were a direct result of my fingers and brain not being synchronized or my
    lack of caffeine.

    Mike Brearley
     
    Mike Brearley, Jun 24, 2005
    #3
  4. Mike Brearley

    R. McCarty Guest

    Thanks for the follow-up. I checked the website and only found a
    minimal amount of documentation on the device - just a simple PDF
    product spec and environmental doc. Maybe someone at BB-Rpts
    can help.
     
    R. McCarty, Jun 24, 2005
    #4
  5. Mike Brearley

    Neteng Guest

    Should use the mask 255.255.255.0. You could also try using a cross-over
    cable and connect to it.
     
    Neteng, Jun 24, 2005
    #5
  6. I know that the subnet mask should be 255.255.255.0, I'm not sure what
    happened to set it to the invalid entry. I've tried a cross-over cable,
    nothing is working.

    Thanks...

    --
    Posted 'as is'. If there are any spelling and/or grammar mistakes, they
    were a direct result of my fingers and brain not being synchronized or my
    lack of caffeine.

    Mike Brearley
     
    Mike Brearley, Jun 24, 2005
    #6
  7. Mike Brearley

    Tony Guest

    I'm assuming this is a routing or switching device. Have you considered
    simply replacing it with a device you know you can access?
     
    Tony, Jun 24, 2005
    #7
  8. Yes, but my vender has already replaced one that they screwed up (or rather
    that the device screwed up on them by doing the same thing it did to me).
    Now the manufacturer is hesitant on just sending a third device. It's an
    RS232 to LAN converter from Westerstrand out of Sweden.

    --
    Posted 'as is'. If there are any spelling and/or grammar mistakes, they
    were a direct result of my fingers and brain not being synchronized or my
    lack of caffeine.

    Mike Brearley
     
    Mike Brearley, Jun 24, 2005
    #8
  9. Mike Brearley

    j9 Guest

    With this subnet mask, there are no available host IPs on the subnet.
    Neither the assigned IP or the assigned gateway have any meaning here, as
    this piece of equipment will not be talking to anything.

    Does this device have a reset switch or a CMOS-clear jumper (or battery) to
    pull out? Or is there as serial console connection that you can use to talk
    to the device with?
     
    j9, Jun 29, 2005
    #9
  10. There's no reset switch, no jumpers, no battery. There is a serial
    connection (as it's an rs232 to rg45 lan converter), but with it's current
    firmware rev, the companies new program that allows settings the network
    settings through the serial connection will not work. My vender is flashing
    a new chip and is sending it to me to arrive tomorrow. With that, I should
    be all set (I hope).

    --
    Posted 'as is'. If there are any spelling and/or grammar mistakes, they
    were a direct result of my fingers and brain not being synchronized or my
    lack of caffeine.

    Mike Brearley
     
    Mike Brearley, Jun 29, 2005
    #10
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