Re: ISA dropping Internet Gateway

Thank you for the info. I'll check that out.
However, to be honest, i dont really understand what you mean... *sweat
drop*
(am a total noob regarding network.... *sob*)
But i'll try to check that out. And no, we're not using HP Proliant.
Its just a normal PC... i am suspecting this is a mistake... bcos our
internet is very slow and sluggish now... *sigh*

Just for more info. Our network is just a simple setting,

Internet - Router - External NIC of Gateway - Gateway/ISA - Internal NIC of
Gateway - Switch of Internal LAN - PCs inside LAN
(sorry as its not a technically correct diagram ... but i hope you get the
idea)
To make things simple... Both External NIC and Internal NIC of gateway has
FIXED IP.

The main purpose is to allow some form of monitoring as well as internal
routing (actually, we have 3 separate internal LAN).

Thanks again for your time.


Limsy the noob ... obviously.


"Nick Domukhovsky" <ndomukhovsky@xxxxx> wrote in message
news:e1HA49FZHHA.3268@xxxxxxxxxxxxxxxxxxxxxxx
Lim Siew Yin ÐÉÛÅÔ:
hi ppl,

Since i don't know the correct term for my problem, i am reusing the
subject
used previously in this newsgroup (Oct 2004).
This problem was raised in this newsgroup before but no solution was
found.
(as in why it occurred and how to correct it)
Rather the result was a workaround which involves "repair" / "reset" the
NIC.

I am hoping the reason(s) has since been found along with the proper
correction.

Problem:
On an ISA server with 2 or more NIC. The external NIC (connected to a
router with internet connection) keeps dying.
External NIC status shows CONNECTED with no error, however, if i tried to
ping any external sites, I will get Timeout
or destination host unreachable. Once i repair / "disable n enable" the
NIC, the problem is solved ... temporary...

Previous posted temp solution for the above problem:
If I do an Ipconfig /registerdns thee gateway comes back. I have a
program
I run every 60 seconds to ping the gateway, if the program gets no
response,
it calls a batch file that performs an ipconfig /registerdns. This gets
the
gateway back up. Not sure why it still drops occasionaly, but this keeps
it
going if it does.

Please help... Thank you for your time.


Limsy the noob... obviously.



I've encountered similar problem, when using ISA 2004 EE connected to
trunc interface of the commutator. My opinion that it is caused by NIC's
driver stack wich hasn't strictly defined dependencies between each
driver. In our case we saw, that ISA server wasn't able to determine
it's default gateway MAC. We saw on a span port, that outgoing frames
wasn't properly tagged (in 802.1q terms), so ARP request wasn't get to
DG. To determine that your problem is same to my, try arp -a command,
when connection drops. I think that you should see something like

<Your DG IP> 00-00-00-00-00-00 Invalid

One way of resolving this problem - not to use some extensions to basic
driver stack (like VLANs support from NIC's vendor, or teaming support).
Another way - try to find how to set this strict dependencies between
drivers (when I was encountered such a problem, I hadn't enough time to
resolve it, and now I hadn't access to that problematic server :( )

By the way, are you using HP Proliant?


--
With best regards
Nickolay Domukhovsky, MCSA


.

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