just for interest's sake, this post was made in April (200104/msg03209)
from Raul F. Fernandez:
****************
Basically you need a hub, 1 router with an ethernet port and a cable modem.
You will need to assign the routable ip that you would get on your NIC to
the ethernet interface of the router. The trick is to have the cable modem
turned off then plug it into the hub and also have the ethernet interface on
the router plugged into the hub. Make sure router is up with the ip address
you would normally get as primary ip. Turn the cable modem on, it will see
the router ethernet interface and grab the mac address and return it to the
UBR or whatever. You will then need to configure NAT overload so it
overloads off the ethernet interface. I will gladly provide this config for
you below:
ip name server xxx.xxx.xxx.xxx DNS server name provided by provider...get
this of winipconfis or ipconfig/all
interface Ethernet0
ip address xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx -ip address that the dhcp server
would usually give your nic
ip nat outside
ip nat inside source list 7 interface ethernet0 overload - defines which
address inside may use NAT overload off the ethernet
access-list permit any - I only have a few system behind everything that
need to get out so this is sufficient
This works folks. I am using a 2511, sure there maybe other ways but I did
not want to bid on a 2 ethernet port 2500 router.
**********************
this could get a one port router working on a cable modem....
Kevin Wigle
----- Original Message -----
From: "Greg Macaulay"
To:
Sent: Tuesday, 24 July, 2001 21:36
Subject: RE: Cable modems & 2501s?? [7:13626]
> No -- your observations are valuable. I actually have three routers (2
> 2501s and 1 2514). I started with the 2501 in question simply because it
> had the correct amount of RAM and Flash for the 12.2 IOS. I've checked the
> Bootstrap Software and have the correct version for 12.2 -- so I'm going
to
> swap the RAM/Flash between the 2501 and 2514. Then I'll try the many
> suggestions put forth here.
>
> The Rube Goldberg solution you proposed (to get the benefit of the 2d
> ethernet port) probably also works (I plan to try it -- just to see if it
> actaully does work), but first I'm gonna' stick with the 2514 solution. I
> guess I'm finally getting into some lab/hands on work -- now that I have
> absorbed all that theory in obtaining the CCNP/CCDP -- which is what it's
> all about anyway.
>
> Thanks for your input. I've been an admirer (of your knowledge) of yours
> since I first undertook this new career some two years ago!
>
> Greg Macaulay
> Oldest CCNP/CCDP on Earth
> Lifetime Member of AARP
> Retired Attorney/Law Professor
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
> Priscilla Oppenheimer
> Sent: Tuesday, July 24, 2001 6:43 PM
> To: [EMAIL PROTECTED]
> Subject: RE: Cable modems & 2501s?? [7:13626]
>
>
> If your router only has one Ethernet port and you already used that one
> Ethernet port to connect back-to-back to your cable modem, then you can't
> also connect your router to an Ethernet hub.
>
> You could connect the router and the cable modem to a hub instead of
> connecting them back-to-back, but I have the sense that that doesn't
> accomplish what you want to accomplish.
>
> You could get yourself another 2501 router and connect the two routers
> using a WAN cross-over cable and the serial ports and then use the
Ethernet
> port of the second router. Now we're really getting into some Rube
Goldberg
> solutions though.
>
> Probably the best bet is replace the router with a router that has two
> Ethernet ports. If your network design calls for two Ethernet LANs, then
> you need a router with two Ethernet ports. Sorry if I'm stating the
> obvious!?
>
> Priscilla
>
> At 06:16 PM 7/24/01, you wrote:
> >Allen --
> >
> >Perhaps I was not clear --
> >
> >I have a 10 Base T Transceiver for the AUI port. That's how I connected
> the
> >cable modem to the port with the cat5 cable (RJ45).
> >
> >The question remains -- how do I connect from the router to the hub?
> >
> >Thanks,
> >
> >Greg Macaulay
> >Oldest CCNP/CCDP on Earth
> >Lifetime Member of AARP
> >Retired Attorney/Law Professor
> >
> >-----Original Message-----
> >From: Allen May [mailto:[EMAIL PROTECTED]]
> >Sent: Tuesday, July 24, 2001 5:53 PM
> >To: Greg Macaulay; [EMAIL PROTECTED]
> >Subject: Re: Cable modems & 2501s?? [7:13626]
> >
> >
> >Get a 10 Base T Transceiver for the AUI port ;)
> >
> >I think someone was selling 5 of them on here the other day for like
> >$5-15...not sure how much but it was cheap.
> >
> >Allen
> >
> >----- Original Message -----
> >From: "Greg Macaulay"
> >To:
> >Sent: Tuesday, July 24, 2001 4:49 PM
> >Subject: Cable modems & 2501s?? [7:13626]
> >
> >
> > > Hi all,
> > >
> > > I need some assistance with setting up my 2501 with my cable modem. I
> >know
> > > I'm missing something very obvious -- but attribute my oversight to my
> >age!
> > >
> > > (1) I configured the e0 port with ip address dhcp.
> > >
> > > (2) I connected the cat5 cable from the cable modem to the e0 port.
> > >
> > > (3) Now I know I need to connect the router to my hub -- but how?? --
> >since
> > > there is only (1) ethernet port on a 2501?? Do I need a 2514 (or some
> >other
> > > router that has more than one ethernet port?
> > >
> > > Again -- I know I'm missing the obvious -- but any help (with or
without
> > > flaming would be appreciated! -- Besides we old folks don't "burn"
> well!)
> > >
> > > Thanks to all,
> > >
> > > Greg Macaulay
> > > Oldest CCNP/CCDP on Earth
> > > Lifetime Member of AARP
> > > Retired Attorney/Law Professor
> ________________________
>
> Priscilla Oppenheimer
> http://www.priscilla.com
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=13720&t=13626
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