RE: ISA and Cable modem ( intermittent disconnects )

  • From: "Mark Strangways" <strangconst@xxxxxxxxxx>
  • To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
  • Date: Mon, 4 Aug 2003 19:17:59 -0400

That reminds me...

Years ago I had the battle of all battles with my cable co.
I complained that somehow there servers where failing after having some much
throughput go thru the modem.
I made them replace the modem, the line outside. The checked a bunch of
there equipment.

It stopped for a period after they replaced the modem a second time. It
later can back in a few months.
I decided to strip down the machine, and low and behold a capacitor had
blown it's top and had leaked on the PC board.of my external NIC. I guess it
would build a charge over time and shut the card down. I replaced that card
and have never had any other issues of anything similar.

Mark S
----- Original Message ----- 
From: "Greg Mulholland" <gmulholland@xxxxxxxxxxxxxxx>
To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
Sent: Monday, August 04, 2003 7:00 PM
Subject: [isalist] RE: ISA and Cable modem ( intermittent disconnects )


> http://www.ISAserver.org
>
>
> I Know it sounds stupid but, have you checked your hardware. Card, cable
> etc.
>
> Greg
>
> -----Original Message-----
> From: david austin [mailto:david.austin@xxxxxxxxxxxxxxx]
> Sent: Tuesday, August 05, 2003 2:14 AM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] ISA and Cable modem ( intermittent disconnects )
>
>
> http://www.ISAserver.org
>
>
> Several months ago we set up an isa server with a cable modem. At the
> time they had a dynamic ip address so we allowed dhcp client as per Toms
> book. The only way we could get the connection to stay up was to
> manually do a ipconfig / renew every morning.
>
> They have now moved over to a fixed IP address which has been entered
> into the tcpip properties of the wan nic.
>
> The connection is still unstable, going up and down like a yoyo. The
> cableco are adamant that their side of it is fine. We have disabled the
> dhcp client rule as they are on a fixed IP.
>
> Is there anything in ISA server which could be causing this periodical
> loss of connectivity. It seems to come back of its own accord too, which
> is even more confusing.
>
> Before I go ranting and raving at the cableco... does anyone have any
> ideas that we could try ??
>
> The ISA server is in firewall only mode, is set as a vpn server too if
> that makes any difference. When the conn is up everything works as it
> should.
>
> Thanks very much for any help.
>
> regards
>
> David Austin
>
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