LVS-DR and Road Runner (aka. Cable Modems)

To: "Lvs" <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: LVS-DR and Road Runner (aka. Cable Modems)
From: "Bill Hatter" <bhatter@xxxxxxxxxxxxx>
Date: Fri, 16 Nov 2001 09:03:14 -0500
Has any dealt with an issue similar to this?

We have two production Web/FTP Servers behind the loadbalancer. Our
customers who try to access with Road Runner Cable Modems are having
problems getting to our website. They get a "page cannot be displayed"

Here is our LVS-DR layout

--------             |
   |(DIP)            |
   |>----->----      |
      |(RIP1) |(RIP2)|
    ------ ------    |
    |Web1| |Web2|    |
    ------ ------    |
      |       |      |
(VIP)  Linux 2.4.5 eth0
(DIP)  Linux 2.4.5 eth1:110 GW
(RIP1) Windows 2000 Server GW
(RIP2) Windows 2000 Server GW

There is an eth1 in the server as well, and it is configured for
which the Windows 2000 Web Servers have as well, but are not configured for
the web service.

The only thing I could think of is that the request for is
going out to, which the loadbalancer is forwarding to .59 and
.58 which is going back to the client with SRCIP = or .59
instead of .60 which would cause a cache/proxy/firewall to stop the packets
as unauthorized.

Anyone have any ideas?


Bill Hatter
Web/Network Administrator
Anderson Publishing Company
Cincinnati, OH

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