Re: Multiple daisy-chained routers

From: Steve Winograd [MVP] (winograd_at_pobox.com)
Date: 05/27/04 

Date: Thu, 27 May 2004 10:57:41 -0600

In article <63B03E79-7E40-4CCF-9AB3-BB1C9AA26D18@microsoft.com>, Ron
<anonymous@discussions.microsoft.com> wrote:
>I have 3 routers daisy-chained. All computers can access the internet, but computers cannot see each other except on their own hubs. I can ping from a computer on hub 3 to one on hub 1 without any problems. I can't do the reverse. Hub 1 computer is XP Pro, hub 3 computer is ME. Any ideas on where to start?

By design, a home broadband router acts as a firewall, preventing
computers on its WAN side (the Internet) from accessing computers on
its LAN side (your local area network). It allows computers on the
LAN side to access the Internet.

If you've daisy-chained the routers by connecting the WAN port of one
to a LAN port on the next one, then:

1. Hub 2 thinks that hub 1 is the Internet and prevents hub 1 from
accessing hub 2 computers, and:

2. Hub 3 thinks that hub 2 is the Internet and prevents hub 2 from
accessing hub 3 computers.

The solution is to use hub 2 and 3 as hubs only, bypassing their
routing capability. To do that:

1. Disable each router's built-in DHCP server, and:

2. Connect hub 2 to a LAN port on hub 1. Connect hub 3 to a LAN port
on hub 2. You might need to use an uplink port on one of each pair.
Don't connect anything to the WAN port on hub 2 or hub 3. 

-- 
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)
Please post any reply as a follow-up message in the news group
for everyone to see.  I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.
Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com

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