Re: ADSL connection qustion

From: Neil Horman (nhorman_at_rNeOdShPaMt.com)
Date: 12/17/03 

Date: Wed, 17 Dec 2003 09:49:53 -0500

Leon. wrote:
> "Justin" <yu0123@justin7.freeserve.co.uk> wrote in message
> news:brof0p$br5$1@
>
>
>>However, it does not mean staic IP addresses.
>
>
> thats correct.
>
>
>> Usually, ISP's will provide DHCP services from the C.O., or
>> from a DHCP server running on the DSL modem.
>
>
> Thats very misleading and confused compared to reality. Forget it.
> He didnt say this sentence.
>
Actually is quite accurate. There are local ISPs here which provide
ADSL/broadband modem/routers which incorporate dhcp services expressly
for the purpose of allowing multiple client machines at the customer end.

> DHCP at the client side is up to the client, the ISP has no say.
> How the ISP allocates IP addresses is up to it, dont worry about it.
>
DHCP at the client side _can_ be up to the client, but many ISP's
provide the service in the modem, either statically serving private
network addresses (192.x or 10.x, etc.), or via dhcp relay from the CO.

> Modems dont do anything like this, routers do. But theres the silly hybrid
> things which are between modems and routers, just treat them like a modem
> and forget how they actually do it, it wont help you to think about this
> hybrids.
>
God forbid he should understand what components reside in a piece of
technology. Just because its commonly called a modem, doesn't mean it
strictly conforms to the more traditional definition of the term. And
routers don't provide DHCP either, DHCP servers do. ADSL/broadband
modems just commonly incorporate DHCP/router and modem services. 

-- 
  Neil Horman
  Red Hat, Inc., http://people.redhat.com/nhorman
  gpg keyid: 1024D / 0x92A74FA1, http://www.keyserver.net

Relevant Pages

  • Re: New laptop cant connect through hub
    ... change the setting on the pc with the issue to DHCP, ... and the modem is an Alcatel SpeedTouch Home. ... I also tried to install newer drivers for the network ... The DHCP server may or may not be on. ...
    (microsoft.public.windowsxp.network_web)
  • Re: ADSL problems
    ... >> under linux. ... > The modem was set up by the provider. ... >> connection with dhcp. ... >> addresses from the router using dhcp. ...
    (comp.os.linux.networking)
  • Re: company web and connect computer not working
    ... Before we had a dialup modem for broadband. ... The only way to get anything to work was to turn off dhcp in the sbs. ... Your SBS server should be responsible for DHCP for your ...
    (microsoft.public.windows.server.sbs)
  • Re: DHCPNACK after re-booting modem and Windows XP Pro
    ... MS-MVP Windows Shell/User ... The DHCP Client service will continue trying ... Everytime i reboot modem and i restart Windows XP after rebooting ...
    (microsoft.public.windowsxp.help_and_support)
  • Re: DHCPNACK after re-booting modem and Windows XP Pro
    ... The DHCP Client service will continue trying to ... I have US Robotics ADSL 2+ router with Windows XP Professional SP2. ... Everytime i reboot modem and i restart Windows XP after rebooting ...
    (microsoft.public.windowsxp.help_and_support)