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Solved: Question about strange PPPoE connection information

Discussion in 'Networking' started by tomdkat, Jan 18, 2009.

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  1. tomdkat

    tomdkat Retired Trusted Advisor Thread Starter

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    A friend recently changed ISPs, from Comcast cable to AT&T DSL. She was sent a 2WIRE 2701HG-B DSL modem/wireless router w/ 4-port switch built-in. She also has a Linksys WRT54G v8 wireless router w/ 4-port switch.

    I put the 2WIRE modem into bridged mode so we could continue using the Linksys router for wireless connectivity. I made sure to disable the wireless support in the 2WIRE router.

    I had run into a problem where the Linksys router wouldn't reestablish the PPPoE connection automatically if it was lost. A firmware upgrade to version 8.00.5 seems to have addressed that problem BUT now when the router is connected, it's getting a strange subnet mask. It might not be strange but it's completely unexpected.

    The IP address is aaa.bbb.ccc.ddd and the subnet mask is 255.255.255.255. The default gateway IP address is aaa.bbb.fff.ggg, so the assigned IP address and the default gateway are on two completely different subnets but in the same class B IP network.

    All of the important machines are able to connect to the Internet ok so I'm not sure if the above subnet mask is anything I should be concerned with.

    Any comments or ideas?

    Thanks in advance!

    Peace...
     
  2. JohnWill

    JohnWill Retired Moderator

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    The subnet mask of 255.255.255.255 is a valid mask for a PPPoE connection, it denotes that there is only a single allowed address.
     
  3. tomdkat

    tomdkat Retired Trusted Advisor Thread Starter

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    Cool, thanks! I guess I've spent so little time looking at PPPoE connection info I wasn't aware of this. :)

    Peace...
     
  4. JohnWill

    JohnWill Retired Moderator

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    Well, it threw me the first time I saw it too. :D
     
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