How to load balance ADSL with Windows 2000 Server ?

Dear Sirs,

My company leased 02 ADSL lines from 01 ISP. Anyone knows
how to use concurrently them to access Internet for load
balancing.
We have 01 Windows 2000 Server computer with MS ISA server
installed.

Thank in advance.
Peter Walkfield

Sgt
Mon Jan 05 05:52:38 CST 2004

Install another ISA server in a two ISA systems array.

>-----Original Message-----
>Dear Sirs,
>
>My company leased 02 ADSL lines from 01 ISP. Anyone
knows
>how to use concurrently them to access Internet for load
>balancing.
>We have 01 Windows 2000 Server computer with MS ISA
server
>installed.
>
>Thank in advance.
>Peter Walkfield
>.
>

anonymous
Mon Jan 05 06:31:16 CST 2004



----- Peter Walkfield wrote: ----

Dear Sirs

My company leased 02 ADSL lines from 01 ISP. Anyone knows
how to use concurrently them to access Internet for load
balancing
We have 01 Windows 2000 Server computer with MS ISA server
installed

Thank in advance
Peter Walkfiel

Uh? There must be something you aren't telling us

One Server - but two connections? Why didn't you order one ADSL link and double the bandwidth


In any case, previous advice is correct. You need another server if you want to use the second link and load balance. Otherwise, you might be limited to using the second link for something like email, if you have permanent static IP numbers assigned with the ADSL connections. You dial up on the primary link for your inbound connections. Dial second link and set the DNS MX records to that IP number and email will come in on that link

Outbound is a bit of a mystery, but I suspect that if you set the gateway IP to the first link for destination 0.0.0.0 mask 0.0.0.0 with a route add 0.0.0.0 0.0.0.0 (gatewayIP) -p type command, then all traffic will come in and out on that link.

You could try and split the traffic by splitting the routes across both links

> route add 0.0.0.0 128.0.0.0 (gatewayIP[1]) -
> route add 128.0.0.0 128.0.0.0 (gatewayIP[2]) -

This is much easier with two network cards configured as external gateways connected directly with ADSL routers. One more network card for internal traffic. I haven't tried this myself, but theoretically at least you should be able to do some form of load balancing

If you have no idea what any of the above means, please consider some external professional assistance. Your ISP may be a good starting point.

billyw
Mon Jan 05 10:31:47 CST 2004

i would agree with this... why the 2 lines?
is it to achieve higher upload at reduced cost?

"Marko" <anonymous@discussions.microsoft.com> wrote in message
news:2ACEC0B4-1FD4-4C67-AFCB-71F6B5FA732C@microsoft.com...
>
>
> ----- Peter Walkfield wrote: -----
>
> Dear Sirs,
>
> My company leased 02 ADSL lines from 01 ISP. Anyone knows
> how to use concurrently them to access Internet for load
> balancing.
> We have 01 Windows 2000 Server computer with MS ISA server
> installed.
>
> Thank in advance.
> Peter Walkfield
>
> Uh? There must be something you aren't telling us.
>
> One Server - but two connections? Why didn't you order one ADSL link and
double the bandwidth?
>
>
> In any case, previous advice is correct. You need another server if you
want to use the second link and load balance. Otherwise, you might be
limited to using the second link for something like email, if you have
permanent static IP numbers assigned with the ADSL connections. You dial up
on the primary link for your inbound connections. Dial second link and set
the DNS MX records to that IP number and email will come in on that link.
>
> Outbound is a bit of a mystery, but I suspect that if you set the gateway
IP to the first link for destination 0.0.0.0 mask 0.0.0.0 with a route add
0.0.0.0 0.0.0.0 (gatewayIP) -p type command, then all traffic will come in
and out on that link.
>
> You could try and split the traffic by splitting the routes across both
links.
>
> > route add 0.0.0.0 128.0.0.0 (gatewayIP[1]) -p
> > route add 128.0.0.0 128.0.0.0 (gatewayIP[2]) -p
>
> This is much easier with two network cards configured as external gateways
connected directly with ADSL routers. One more network card for internal
traffic. I haven't tried this myself, but theoretically at least you should
be able to do some form of load balancing.
>
>
> If you have no idea what any of the above means, please consider some
external professional assistance. Your ISP may be a good starting point.

Peter
Tue Jan 06 21:44:28 CST 2004

Thank for all comments !

Yes, we want to speed up connection with lower cost.
In my country, ADSL speed is not guaranteed and cost is
cheaper than leased line connection.

My ISP can not help in this case.

I agree with you to install a new server in ISA array.
But it is better if we can use 01 server with 02 external
NICs.
Can you explain more detail this configuration? Esp. two
lines "route add".

Thanks,
Peter Walkfield
>-----Original Message-----
>i would agree with this... why the 2 lines?
>is it to achieve higher upload at reduced cost?
>
>"Marko" <anonymous@discussions.microsoft.com> wrote in
message
>news:2ACEC0B4-1FD4-4C67-AFCB-71F6B5FA732C@microsoft.com...
>>
>>
>> ----- Peter Walkfield wrote: -----
>>
>> Dear Sirs,
>>
>> My company leased 02 ADSL lines from 01 ISP.
Anyone knows
>> how to use concurrently them to access Internet
for load
>> balancing.
>> We have 01 Windows 2000 Server computer with MS
ISA server
>> installed.
>>
>> Thank in advance.
>> Peter Walkfield
>>
>> Uh? There must be something you aren't telling us.
>>
>> One Server - but two connections? Why didn't you order
one ADSL link and
>double the bandwidth?
>>
>>
>> In any case, previous advice is correct. You need
another server if you
>want to use the second link and load balance. Otherwise,
you might be
>limited to using the second link for something like
email, if you have
>permanent static IP numbers assigned with the ADSL
connections. You dial up
>on the primary link for your inbound connections. Dial
second link and set
>the DNS MX records to that IP number and email will come
in on that link.
>>
>> Outbound is a bit of a mystery, but I suspect that if
you set the gateway
>IP to the first link for destination 0.0.0.0 mask 0.0.0.0
with a route add
>0.0.0.0 0.0.0.0 (gatewayIP) -p type command, then all
traffic will come in
>and out on that link.
>>
>> You could try and split the traffic by splitting the
routes across both
>links.
>>
>> > route add 0.0.0.0 128.0.0.0 (gatewayIP[1]) -p
>> > route add 128.0.0.0 128.0.0.0 (gatewayIP[2]) -p
>>
>> This is much easier with two network cards configured
as external gateways
>connected directly with ADSL routers. One more network
card for internal
>traffic. I haven't tried this myself, but theoretically
at least you should
>be able to do some form of load balancing.
>>
>>
>> If you have no idea what any of the above means, please
consider some
>external professional assistance. Your ISP may be a good
starting point.
>
>
>.
>

Marko
Wed Jan 07 01:59:33 CST 2004


>-----Original Message-----
>Yes, we want to speed up connection with lower cost.
>In my country, ADSL speed is not guaranteed and cost is
>cheaper than leased line connection.
>
>My ISP can not help in this case.
>
>I agree with you to install a new server in ISA array.
>But it is better if we can use 01 server with 02 external
>NICs.
>Can you explain more detail this configuration? Esp. two
>lines "route add".


Key is the last suggestion. If you need to ask about how
to use route add, then you should give serious
consideration to having an expert on site to help you do
this in any case. I didn't learn what I know by posting
hundreds of scenarios to mcse newsgroups and waiting for a
good response or by accumulating the posts of others.
That's why I don't think it would be reasonable to expect
detailed explanation here so that you can use this
newsgroup to develop skills you are not in possession of.
I see this as more of a forum for pointing you in the
right direction, rather than detailing a step by step
process for solving problems.

I am not writing this to disrespect you, but you should
see that a detailed response to your last question is
outside of the scope of this newsgroup and more likely to
be developed in a classroom or at home, working on your
network lab exercises. Hence, seek the personal guidance
of someone who knows:

1/ How to correctly configure and install three network
cards in one server
2/ How to get two cards to use two separate ADSL routers
as a preferred internet gateway
3/ How to add routes using the route add -p type command
and split the internet effectively into two large subnets
to create pseudo load balanced networking.

Otherwise, start by disregarding everything I have said,
go to a command prompt, type "route /?" and learn how this
command works. Figure out how to add multiple network
cards and correctly configure gateways. Then, you may
have the solution. Then again, you may decide that you
were out of your depth on this one and someone else was
trying to gently guide you to a quicker solution where you
would likely still learn all the same stupid network
tricks I described above to achieve smoke and mirrors load
balancing act.

Peter
Wed Jan 07 22:58:08 CST 2004

Thank you very much.

Peter Walkfield

>-----Original Message-----
>
>>-----Original Message-----
>>Yes, we want to speed up connection with lower cost.
>>In my country, ADSL speed is not guaranteed and cost is
>>cheaper than leased line connection.
>>
>>My ISP can not help in this case.
>>
>>I agree with you to install a new server in ISA array.
>>But it is better if we can use 01 server with 02
external
>>NICs.
>>Can you explain more detail this configuration? Esp. two
>>lines "route add".
>
>
>Key is the last suggestion. If you need to ask about how
>to use route add, then you should give serious
>consideration to having an expert on site to help you do
>this in any case. I didn't learn what I know by posting
>hundreds of scenarios to mcse newsgroups and waiting for
a
>good response or by accumulating the posts of others.
>That's why I don't think it would be reasonable to expect
>detailed explanation here so that you can use this
>newsgroup to develop skills you are not in possession
of.
>I see this as more of a forum for pointing you in the
>right direction, rather than detailing a step by step
>process for solving problems.
>
>I am not writing this to disrespect you, but you should
>see that a detailed response to your last question is
>outside of the scope of this newsgroup and more likely to
>be developed in a classroom or at home, working on your
>network lab exercises. Hence, seek the personal guidance
>of someone who knows:
>
>1/ How to correctly configure and install three network
>cards in one server
>2/ How to get two cards to use two separate ADSL routers
>as a preferred internet gateway
>3/ How to add routes using the route add -p type command
>and split the internet effectively into two large subnets
>to create pseudo load balanced networking.
>
>Otherwise, start by disregarding everything I have said,
>go to a command prompt, type "route /?" and learn how
this
>command works. Figure out how to add multiple network
>cards and correctly configure gateways. Then, you may
>have the solution. Then again, you may decide that you
>were out of your depth on this one and someone else was
>trying to gently guide you to a quicker solution where
you
>would likely still learn all the same stupid network
>tricks I described above to achieve smoke and mirrors
load
>balancing act.
>
>
>.
>