eyaik!!!!! What has google done to my nice ascii diagram??
On Feb 19, 12:02 pm, Janaka <[email protected]> wrote:
> For a standard A/DSL modem/router these days (in Australia anyway),
> the PPoE only needs to be setup from the modem to the exchange of the
> service provider. The client facing interface/s (ie: RJ45 ethernet
> connection/s) is typically standard ethernet. The ADSL modem has a
> inbuilt router with NAT and a DHCP server (to hand out local IP
> addresses) and a DNS chaching server. Following is a crude diagram of
> a typical setup:
> __________________________________
> ******** | ADSL modem + router
> |
> ** |
> --------------------------------- |
> Internet**-------------|-----Real-IP NATed Gateway IP
> --|------------------------- Your PC 1
> ** | (203.14.1.99)
> (192.168.1.1) | | (192.168.1.5)
> ******** | DHCP
> server | |
> | DNS caching
> server | \ ------------------Your PC 2
> |
> Router | (192.168.1.6)
> |__________________________________|
>
> # Problem 1: Most ADSL modems have only IP-V4. But Ubuntu has IP-V6
> enabled by default. This used to cause problems with getting DNS and
> IP info via DHCP requests. Some solutions in the past have been to
> blacklist IP-V6 on ubuntu.
> # Problem 2: Some ADSL modems with single ethernet ports have buggy
> DHCP firmware where the DHCP fails to handout new IP addresses if the
> MAC address of the PC changes (eg: a different network card). This is
> easily fixed by power cycling the modem.
> # Problem 3: Ubuntu sometimes fails to get DNS info from DHCP
> requests. Workaround for this is to "append" your Service providers
> DNS server addresses to the "/etc/dhcp3/dhclient.conf" file. eg: add
> the following line
> append domain-name-servers <Service provider DNS1>,<Service provider
> DNS2>;
> NOTE: make sure you include the trailing ";".
> Cheers
> Janaka
>
> On Feb 19, 3:25 am, Christopher Stamper <[email protected]>
> wrote:
>
> > On Wed, Feb 18, 2009 at 11:04 AM, Dan
> > <[email protected]>wrote:
>
> > > On Feb 16, 11:57 am, Christopher Stamper
> > > <[email protected]> wrote:
> > > > On Mon, Feb 16, 2009 at 11:53 AM, Gullybor <[email protected]> wrote:
>
> > > > If the 'modem' is one of those cheesy router/modem combo's, then you'll
> > > have
> > > > to refer to it's documentation.
>
> > > I installed Ubuntu 8.10 on my Dell mini9 last night after 3 weeks of
> > > trying (without success) to get wired or wireless internet access
> > > under the Dell version of 8.04 that ships on the mini. Plugged in the
> > > ethernet cable and "bam" I was connected to the internet. I tried to
> > > establish a wireless connection and could not. I have one of the
> > > cheesy router/modem combos mentioned above...Westell 327w from
> > > Verizon, using Verizon DSL.
>
> > > I reconnected the ethernet cable and downloaded a LOT of updates,
> > > installed, rebooted and cannot get a wired connection. I configured
> > > the PPPoE settings so they're the same as my WinXP desktop...no joy.
> > > I'm beginning to suspect the lousy router/modem is the source of all
> > > (well, OK, most) evil.
>
> > > Anyone have any thoughts or suggestions...Verizon DSL, Dell mini9,
> > > Ubuntu 8.10, no wired or wireless connection.
>
> > I suggest to all of you: get a router.
>
> > Or, configure your combo modem thing to work properly.
>
> > I suspect that this isn't even an issue with ubuntu, but rather your config.
> > So if you plugged a fresh Windows XP install in, it probably wouldn't work
> > either.
>
> > @OP: try doing what Janaka said(dhpclient), and post the results.
>
> > @Dan: unconfigure the PPoE. If you really have a router, you don't need this
> > setting at all. Then, open terminal, type 'ifconfig', and post results.
>
> > --
> > Christopher Stamper
>
> > Email: [email protected]
> > Web:http://tinyurl.com/2ooncg
> > gTalk:http://tinyurl.com/6e359r
> > Skype: cdstamper
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