Plunet router

Discussion in 'Broadband' started by Graham J, Mar 1, 2015.

  1. Graham J

    Graham J Guest

    Does anybody know what router Plusnet now supplies? A neighbour has
    recently signed up with them and would like to accept the router they
    offer. However, so I can support him and maintain his existing LAN
    arrangements the router needs to have:

    LAN IP binding so specific devices can have reserved IP addresses.

    Management from the WAN from a (short) list of specific IP addresses.

    Any experience, please?
    Graham J, Mar 1, 2015
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  2. Graham J

    Graham. Guest

    Is there any reason why they can't continue to use the device they
    have now?

    My ISP sent me a Thompson router that is still on the shelf in its
    Graham., Mar 1, 2015
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  3. Graham J

    Graham J Guest


    Neighbour had a Netgear DGN1000 but it didn't maintain a reliable WiFi
    connection with any of the family's iPads. Wired connection was
    perfectly OK.

    So I lent him a Vigor 2830n which works perfectly with all the iPads,
    but of course it is unjustifiably expensive for his needs. Also, I want
    the V2830n back because it is a spare for my commercial customers.
    Graham J, Mar 1, 2015
  4. Graham J

    David Guest

    I'm about to start Plusnet fibre and I understand they issue a
    Thomson/Tecnicolor TG582n but are changing over to Sagem 2704n. both
    sound like very basic end of the market.
    David, Mar 1, 2015
  5. Graham J

    Mark Carver Guest

    If he's a neighbour, can't you just log onto the WLAN ? :)
    Mark Carver, Mar 1, 2015
  6. Graham J

    fred Guest

    My lazy approach in the past has been to keep the wifi challenged router
    and add an AP, the connection handling from the router was fine, it was
    just the wifi that was suspect.

    If he's a non-payer then it may be the simplest solution.

    Apologies however for not answering your original question.
    fred, Mar 1, 2015
  7. Graham J

    Roger Mills Guest

    Both Thomson routers which have been supplied to me by PlusNet (for two
    different properties) can be configured for remote access fairly easily.
    I don't know about limiting access to 2 or 3 IP addresses, but remote
    access requires a username and password which are different from those
    used for direct access. For a one-off fee, you can have a fixed WAN IP
    address - or you can use one of free dynamic IP mapping services.

    If you want each device on the LAN to have a specific IP address, surely
    the easiest way is to turn off DHCP and configure the addresses into the
    devices themselves.
    Please reply to Newsgroup. Whilst email address is valid, it is seldom
    Roger Mills, Mar 1, 2015
  8. Graham J

    Graham J Guest

    Not that close - maybe quarter of a mile ...
    Graham J, Mar 1, 2015
  9. Graham J

    Roger Mills Guest

    The WiFi on one of my Thomson routers wasn't very reliable, so I turned
    it off and used an AP in the vicinity of the router - plus power line
    adapters with built-in WiFi in various strategic locations throughout
    the house.
    Please reply to Newsgroup. Whilst email address is valid, it is seldom
    Roger Mills, Mar 1, 2015
  10. Graham J

    Woody Guest

    That is an interesting point, but if you think about it there is an
    obvious answer. If any of those devices are used elsewhere (i.e.
    portable) on another network it is very unlikely that (a) the same IP
    range would be in use at the other place(s) and (b) even if it were
    what chance your fixed address being free?

    Equally if you turn off the DHCP it has to be at both ends - remote
    equipment and router - to ensure that any visitor has not already been
    allocated your fixed address.

    No, the original is right - if you want to fix internal (NAT)
    addresses on your system and make them reliable then fix them in the
    router and leave the outside equipments to use DHCP then anything will
    work anywhere.

    Proof if you want it: a neighbour of mine uses a laptop and a wi-fi
    printer. Quite often he would report that he could not print. The
    issue was that he had switched his printer on before his laptop and
    the DHCP in the router had reversed the two addresses. Not a problem
    except that using what is effectively a network connected printer
    requires a fixed IP address in Windoze or Windoze it will not know
    where to send the document to be printed. Fixing the IP addresses
    against MAC in the router cured the problem.
    Woody, Mar 2, 2015
  11. Graham J

    Graham J Guest

    OP here - thank you for explaining the reasons.

    I have found a case where both are necessary, both binding in the DHCP
    server and static assignment in the device.

    This is where the LAN has a server computer which normally hands out IP
    addresses to all equipment on the LAN, and a PBX for an IP phone system.
    Suppose the server fails; suppose then that the PBX is rebooted. PBX
    therefore cannot get an IP address and assigns itself one in the
    autoconfiguration range (169.x.y.z). Almost certainly the router
    provides a mapping from the outside world to the PBX, and this is needed
    in order for the PBX to make and receive calls. And at this moment you
    want to ring the support people about the failed server!

    So you need to fix the IP address in the PBX, as well as reserving it in
    the DHCP server to prevent that address from being allocated to anything
    Graham J, Mar 2, 2015
  12. Or set DHCP to work over a limited range of addresses. Then you can
    use fixed addresses for fixed equipment (within the range not covered
    by DHCP of course), and allow the router to administer variable ones
    for portable devices such as phones and laptops that might also be
    used elsewhere.

    This is what I've done for many years, and I notice that some new
    routers are now configured this way by default.

    Roderick Stewart, Mar 2, 2015
  13. Graham J

    Roger Mills Guest

    Yes, that makes good sense.
    Please reply to Newsgroup. Whilst email address is valid, it is seldom
    Roger Mills, Mar 2, 2015
  14. Graham J

    Roger Mills Guest

    Sounds like your neighbour has more complex needs than most of mine!
    Please reply to Newsgroup. Whilst email address is valid, it is seldom
    Roger Mills, Mar 2, 2015
  15. Graham J

    Woody Guest

    A take your point but in that application are there any portable units
    that go off site as it were? That is where I suspect the problem could

    What you would need in the example is a router that will normally pass
    everything through but in the event of server failure it issue its own
    addresses. Does such a thing exist?
    Woody, Mar 2, 2015
  16. Graham J

    Graham J Guest

    Roger Mills wrote:
    No. I was generalising about the previousl reply.
    Graham J, Mar 2, 2015
  17. Graham J

    Graham J Guest

    Woody wrote:

    For a business, there are always laptops or smartphones which connect to
    the LAN in the office, and are also used away from the office

    I've not come across a router that checks for a working DHCP server and
    falls back to itself if it fails to find one. It's easy enough to set
    everything up as I describe, and the PBX is not going to be moved
    elsewhere without skilled technical support.

    My purpose was to illustrate a reasonable exception to the rule "always
    use DHCP, if necessary with MAC-IP binding"
    Graham J, Mar 2, 2015
  18. Graham J

    Roger Mills Guest

    Yes, I once had a works laptop which needed a fixed non-routeable IP
    address in order to access various secure systems at work. The network
    config had been clobbered with some 'policy' or other which meant that I
    couldn't change the IP address to use it at home.

    So I set my home network up with a compatible range of non-routeable
    addresses - but that didn't matter because these addresses were behind
    my router's NAT, and weren't visible to the outside world. That is,
    until I started using VoIP with a device which tunnelled under NAT . . .
    Please reply to Newsgroup. Whilst email address is valid, it is seldom
    Roger Mills, Mar 2, 2015
  19. Graham J

    Graham. Guest

    NAT traversal with SIP is a dark art, but the one thing you are not
    supposed to do is forward any ports to your Asterisk box.

    I my case I get random occasional cut-offs of calls and some other
    funnys so I do have some mappings in place. Try as they might (and
    they do, believe me) to log onto my extensions the hackers have never
    succeeded in making a call at my expense. In theory they only get one
    chance to guess the password per IP address because of a process I
    have running called fail2ban.
    Graham., Mar 2, 2015
  20. All the routers I have seen allow you to restrict the range of IP
    addresses that it assigns with DHCP.

    All the IP devices I have seen allow you to assign fixed IP addresses.
    Michael Chare, Mar 10, 2015
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