Maybe OT: Internet connection redundancy (UK)

Hi,

Apologies for the slightly off topic post, I am posting here because I'm
sure what I'm wanting has been done by some of you guys.

I'm running a web site which has recently been updated, and its use has
been heavily promoted amongst our customers. The static web pages are
hosted by our ISP, and there is a pass through to our W2003R2 server for
data supply. I'm concerned that the weak link in all this is our
broadband line. If that went down, no customers could check their data,
run reports, etc.
If I put in another broadband line from a different ISP, I'll get some
fallback, but both lines would have to go through the same BT exchange.
If I go for satellite broadband, I'd still need the phone line for
uploading data, I think.
What have others done?

Best Regards,
SW

You may want to buy a dual WAN router. This search result may help,

what is What is Dual WAN or Load Balance Router? What is svchost.exe? Previous Page Next Page. Related Topics. How do I know if I have spyware installed on your ...
www.howtonetworking.com/whatis/whatis.htm


Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"S W" <(E-Mail Removed)> wrote in message news:OsF3PBr%(E-Mail Removed)...
Hi,

Apologies for the slightly off topic post, I am posting here because I'm
sure what I'm wanting has been done by some of you guys.

I'm running a web site which has recently been updated, and its use has
been heavily promoted amongst our customers. The static web pages are
hosted by our ISP, and there is a pass through to our W2003R2 server for
data supply. I'm concerned that the weak link in all this is our
broadband line. If that went down, no customers could check their data,
run reports, etc.
If I put in another broadband line from a different ISP, I'll get some
fallback, but both lines would have to go through the same BT exchange.
If I go for satellite broadband, I'd still need the phone line for
uploading data, I think.
What have others done?

Best Regards,
SW

Robert L [MVP - Networking] wrote:
> You may want to buy a dual WAN router. This search result may help,
>
> what is <http://www.howtonetworking.com/whatis/whatis.htm>
> *What is Dual WAN or Load Balance Router*? What is svchost.exe? Previous
> Page Next Page. Related Topics. How do I know if I have spyware
> installed on your *...*
> www.howtonetworking.com/whatis/whatis.htm
> <http://www.howtonetworking.com/whatis/whatis.htm>
>
>
> Bob Lin, MS-MVP, MCSE & CNE
> Networking, Internet, Routing, VPN Troubleshooting on
> http://www.ChicagoTech.net
> How to Setup Windows, Network, VPN & Remote Access on
> http://www.HowToNetworking.com
>

Bob,

Thanks for the link and the advice, a dual WAN router looks good!

If the main aim in buying this is to have a failover line, how would you
recommend that the two ADSL lines are supplied to achieve this? Is it a
good idea to use 2 different ISPs from different parts of the country?

Regards,
Steve

The size of the line really depends on what the utilization will be. You'll
have to determine that. Remember that ADSL is asymmetric and uploads are far
slower than downloads. Also, chances are that ADSL from two different
carriers will go through the same CO. You can request a different CO, but
has to be with in 18,000 feet and you'll have to pay extra for it. Just ask
the carrier and they will tell you what CO is goes through.

"S W" <(E-Mail Removed)> wrote in message
news:%23b$kxL0%(E-Mail Removed)...
> Robert L [MVP - Networking] wrote:
>> You may want to buy a dual WAN router. This search result may help,
>> what is <http://www.howtonetworking.com/whatis/whatis.htm>
>> *What is Dual WAN or Load Balance Router*? What is svchost.exe? Previous
>> Page Next Page. Related Topics. How do I know if I have spyware installed
>> on your *...*
>> www.howtonetworking.com/whatis/whatis.htm
>> <http://www.howtonetworking.com/whatis/whatis.htm>
>>
>>
>> Bob Lin, MS-MVP, MCSE & CNE
>> Networking, Internet, Routing, VPN Troubleshooting on
>> http://www.ChicagoTech.net
>> How to Setup Windows, Network, VPN & Remote Access on
>> http://www.HowToNetworking.com
>>
>
> Bob,
>
> Thanks for the link and the advice, a dual WAN router looks good!
>
> If the main aim in buying this is to have a failover line, how would you
> recommend that the two ADSL lines are supplied to achieve this? Is it a
> good idea to use 2 different ISPs from different parts of the country?
>
> Regards,
> Steve

NetEng wrote:
> The size of the line really depends on what the utilization will be. You'll
> have to determine that. Remember that ADSL is asymmetric and uploads are far
> slower than downloads. Also, chances are that ADSL from two different
> carriers will go through the same CO. You can request a different CO, but
> has to be with in 18,000 feet and you'll have to pay extra for it. Just ask
> the carrier and they will tell you what CO is goes through.
>

NetEng,

Thanks for the advice. I'm not sure what a CO is, and I'm guessing
you're not based in the UK? Would a CO be the equivalent of our
"telephone exchange"?

Thanks,
SW

1. The dual WAN router doesn't offer redundancy but also balance.
2. in most cases, we recommended our clients use two different ISP.
3. However, using two different ISP is difficult to manage the DNS.

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"S W" <(E-Mail Removed)> wrote in message news:%23b$kxL0%(E-Mail Removed)...
Robert L [MVP - Networking] wrote:
> You may want to buy a dual WAN router. This search result may help,
>
> what is <http://www.howtonetworking.com/whatis/whatis.htm>
> *What is Dual WAN or Load Balance Router*? What is svchost.exe? Previous
> Page Next Page. Related Topics. How do I know if I have spyware
> installed on your *...*
> www.howtonetworking.com/whatis/whatis.htm
> <http://www.howtonetworking.com/whatis/whatis.htm>
>
>
> Bob Lin, MS-MVP, MCSE & CNE
> Networking, Internet, Routing, VPN Troubleshooting on
> http://www.ChicagoTech.net
> How to Setup Windows, Network, VPN & Remote Access on
> http://www.HowToNetworking.com
>

Bob,

Thanks for the link and the advice, a dual WAN router looks good!

If the main aim in buying this is to have a failover line, how would you
recommend that the two ADSL lines are supplied to achieve this? Is it a
good idea to use 2 different ISPs from different parts of the country?

Regards,
Steve

Robert L [MVP - Networking] wrote:
> 1. The dual WAN router doesn't offer redundancy but also balance.
> 2. in most cases, we recommended our clients use two different ISP.
> 3. However, using two different ISP is difficult to manage the DNS.
>
> Bob Lin, MS-MVP, MCSE & CNE
> Networking, Internet, Routing, VPN Troubleshooting on
> http://www.ChicagoTech.net
> How to Setup Windows, Network, VPN & Remote Access on
> http://www.HowToNetworking.com
>
Hi Bob,

What problems did you encounter with DNS? Forgive my ignorance but could
these be avoided by using public DNS servers instead of the ISP's?

SW

Stevie boy, 'here's the solution'
(http://www.cisco.com/univercd/cc/td/...to_doc/bgp.htm) I
was referring to earlier using BGP. you need to buy an AS number
methinks. As you will see in a diagram in the document, you have two
ISP advertising the same network IP, so if you can get the same IP from
both but different preference numbers, no DNS problems, when one
connection craps out, you the preference shifts to the other ISP and
you won't even need to change your DNS entries since you'll keep the
same IP:


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