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DR capabilities - not arp question :)

To: <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: DR capabilities - not arp question :)
From: "Ed Crotty" <ecrotty@xxxxxxxxxxx>
Date: Fri, 28 Jun 2002 14:46:18 -0400
> I have a fundemental question about the capabilities of DR.. We have been 
> happy users of LVS NAT for a couple of years but due to bandwidth 
> constraints, we need to reimplement our current strategy.  
> 
> I have a couple of questions about the DR implementation (no its not about 
> ARP :D)
> 
> Scenario - Today we have a fully, correctly functioning LVS setup.  It is NAT 
> based.  
>                   It goes out to 4 bonded T1s.  Everything is happy.
> 
> Future   - We have an additional 2 T1s on a different network to the 
> ineternet that we would
>               like to have all incoming traffic come down, and push the 
> outbound traffic out
>               the 4 bonded T1s
>  
>         It seems to me that DR will be able to accomplish this.. Is this 
> accurate?  Can the RS network be a private segment as long as it
>               has VIPs for the virtual defined on the machine?  The reason I 
> ask is that we would like to do as little change to the network as            
>      possible (if its not possible however, such is life!)
> 
> 
> Current LVS implementation
> 
> 
>                       |                               
>                       | internet (out to 4 bonded T1s)
>               =========================
>                       |                               |
>               |       director                        |
>               =========================
>                       | private segment .1
>                       |
>                       |
>               ------------------------------------- (10.1.1.0)
>               |       |       |       |
>               |       |       |       |
>               RS1 .2  RS2 .3  RS3 .4  RS4 .5 
>                       RS DG = 10.1.1.1
> 
> Possible DR implementation (?)
> 
> (note 2 T1s become incoming traffic points and 4 T1s become outbound traffic)
>                       
> internet (out to 4 T1s)       |                               
>     |                 | internet (out to 2 bonded T1s)
>     |         =========================
>  ======       |                               |
>  | FW |               |                       director                | 
>  ======       =========================
>     | .254            | private segment .1
>     |                 |
>     |                 |
>     --------------------------------------------------------- (10.1.1.0)
>               |       |       |       |
>               |       |       |       |
>               RS1 .2  RS2 .3  RS3 .4  RS4 .5 
>               RS DG       = 10.1.1.254        
> 
> Will this scenario work?  Both the 4 T1s and the 2 T1s have different public 
> network ranges
> as well...
> 
> Thanks!
> 
> -ed
> 
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