is it possible to construct hierachical LVS?

[wanghon3@xxxxxxxxxxxxxxx]

Hi,
I plan to construct two layers LVS as following:
|----gateway+LVS NAT (Director 1)-----|
                   |
                   |
                   |
      |--------------------|
      |                            |
      |                            |
|---real server A---|    |----Director 2(NAT)----|
                                                   |
                                                   |
                                   |--------------------|
                                   |                            |
                                   |                            |
                       |---realserver B----|         |---realserver C----|

all the real servers and Director 2 are in 192.168.xxx.

realserver B and C are proxies. So these two proxies must be able to act
as client to real server A. But I don't know whether it can work. Is this
architecture the same as the architecture of the three real server
directly connected to Director 1?

Many Thanks.

Victor