RE: Cable modem problem

  • From: Joel Heideman <webmaster@xxxxxxxxxxxxxxxxx>
  • To: "'[ISAserver.org Discussion List]'" <isalist@xxxxxxxxxxxxx>
  • Date: Thu, 18 Apr 2002 16:09:34 -0600

You don't need to renew and release your external NIC. Why are you messing
with this?
 
Share out yer cable connection with a Linksys cable router - it works
flawless.
 
You don't need to use MS DHCP if you don't HAVE TO. I run ISA + Linksys with
over 30 nodes with ATTBI Cable.
 
Everything you need is right here:
 
http://www.amazon.com/exec/obidos/tg/guides/guide-display/-/35WW9U0W9DYOC/qi
d=1019164719/sr=18-1/ref=sr_18_1/102-3389090-9128146
<http://www.amazon.com/exec/obidos/tg/guides/guide-display/-/35WW9U0W9DYOC/q
id=1019164719/sr=18-1/ref=sr_18_1/102-3389090-9128146> 

-----Original Message-----
From: Dan Bartley [mailto:dan@xxxxxxxxxxxxxxx] 
Sent: Thursday, April 18, 2002 3:24 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Cable modem problem


http://www.ISAserver.org



Works fine. It's blocked from the outside, hands out internally with no
problem. This was originally a single server environment, now it is only 2.

 

Here is where I ended up with the DHCP on the cable modem issue.

 

If I reboot the server, it will get it's DHCP from the cable company on the
external interface and everything works fine. However, if I try to do a
release and then renew it will fail. One would think this means that the ISA
Control is the problem, despite having the DHCP client rule enabled and
configured, and I just need to turn it off temporarily from the desktop to
manually renew. On a reboot the DHCP client starts up and gets it's IP
before ISA starts up. However, if I am logged on and go to a command prompt
with ISA running it will not renew, with the above in mind it would seem I
just need to stop ISA Control and it's associated services with it (will
anyway). This does not work though. If ISA has started at all, even if I
turn it off, it will not get it's DHCP address. Only a reboot will allow it
to get one. This was true for the ISDN router too. Unfortunately, that means
something is still wrong and in a month when my controlling cable company
goes to renew the IP and verify the correct MAC address is there, it will
fail, I will go down until I notice it and then have to reboot to recover.

 

So if anyone has any thoughts on what might be wrong, I would greatly
appreciate it. I've gone through the Learning Zone docs several times on the
instructions for this, to no avail. So, yes, the rule is enabled and
configured correctly, but it still does not work.

 

Me thinks I have something misconfigured somewhere or a faulty install
because I also have the web issue where I can not publish a web server to an
internal IP, only works if I set the external IP on the web site.new and
verufy the correct MAC addr

 

 

Dan Bartley, MCSE+Internet 
dan@xxxxxxxxxxxxxxx 

-----Original Message-----
From: Steve Moffat [mailto:steve@xxxxxxxxxxxxxxx] 
Sent: Thursday, April 18, 2002 15:04
To: [ISAserver.org Discussion List]
Subject: RE: [isalist] RE: Cable modem problem

 

As far as I'm aware, having your Isa Server as a DHCP server is a no-no. I
may be wrong and if anyone else has managed it please accept my apologies.

-----Original Message----- 
From: Dan Bartley [mailto:dan@xxxxxxxxxxxxxxx] 
Sent: Thu 18/04/2002 01:37 PM 
To: [ISAserver.org Discussion List] 
Cc: 
Subject: [isalist] RE: Cable modem problem

http://www.ISAserver.org

Yes. I did the registry hack suggested at the learning zone for disabling
IPAutoconfig. So I get 0.0.0.0. I get a couldn't contact DHCP server error
when I try to force a renew from the command line.

 

Dan Bartley, MCSE+Internet 
dan@xxxxxxxxxxxxxxx 

-----Original Message-----
From: Greg Mulholland [mailto:duke@xxxxxxxxxxxxxx] 
Sent: Thursday, April 18, 2002 11:20
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Cable modem problem

 

http://www.ISAserver.org

Have you enabled the dhcp client filter for you dhcp server on your cable
network. If so, i would assume it would work then. otherwise, what is
happening, what address are you given

 

 

----- Original Message ----- 

From: Alvarado Jesus <mailto:Jalvarado@xxxxxxx>  

To: [ISAserver.org Discussion List] <mailto:isalist@xxxxxxxxxxxxx>  

Sent: Friday, April 19, 2002 1:13 AM

Subject: [isalist] RE: Cable modem problem

 

http://www.ISAserver.org <http://www.ISAserver.org> 

Take the DHCP address that the Cable co. give you 

and enter it as a static address , ( cheesey ) it will work until you lease
expires the switch to dhcp

get the address and go thru the cycle again

works for me.

-----Original Message-----
From: Dan Bartley [mailto:dan@xxxxxxxxxxxxxxx <mailto:dan@xxxxxxxxxxxxxxx> ]
Sent: Thursday, April 18, 2002 9:21 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] Cable modem problem

http://www.ISAserver.org



I think. I'm changing from ISDN to a cable modem. The cable co. says I must
have my ISA server set for DHCP. Followed the instructions in the Learning
Zone for this type of setup. I tested it against my ISDN router. Set it to
do DHCP, gave the DHCP Client rule the IP of the ISDN router as the remote
computer. It won't get an IP from it. I stopped the ISA Control, as
suggested, still won't get the IP.

Maybe it is the router, but I thought I would check ahead if anyone has any
thoughts on what else I might be missing.

Dan Bartley, MCSE+Internet

dan@xxxxxxxxxxxxxxx

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