Setting Loopback on real server

Hello All,

 I have been struggling with this for few days now,  can anyone please give
me some pointers as to how to sort this one out.

I have managed to run a director but on issuing the command

/sbin/ipvsadm -L -n

I get this result

IP Virtual Server version 1.2.0 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  xx.xxx.102.47:80 rr persistent 600
  -> xx.xxx.102.44:80             Route   0      0          0
  -> xx.xxx.102.43:80             Route   0      0          0
  -> 127.0.0.1:80                 Local   1      0          0

which indicates that none of the real servers are responding.

The reason is that I am unable to setup loopback VIP on the real
server, as soon as I setup the lookback interface lo:0

using details

DEVICE=lo:0
IPADDR=xx.xxx.102.47
NETMASK=255.255.255.128
NETWORK=xx.xxx.102.0
BROADCAST=127.255.255.255
ONBOOT=yes
NAME=loopback

the real server goes down.

and only comes back up when the lookback address is removed, can
anyone please guide me how to sort this one out, thanks a lot.

Imran.