A little issue with a LVS_DR setup.. could someone shed some light on it, please?

[David <dh@xxxxxxxxx>]

Hello.

I asked a few weeks ago how to setup an LVS and the responses were 
overwhelmingly friendly and helpful. For that I thank all of you.  I 
tried to setup a LVS_DR by hand today and somehow I seem to have missed 
a few of the more subtle steps as it seems. Please look at the included 
configurations from both, the LVS Director and the backend.
My problem seems to be the following:
When I try ssh 172.16.100.160 ON the LVS director itself, I land on the 
LVS director.
When I try ssh 172.16.100.160 from any Machine within 172.16.0.0/16 
then it will time out after a while.
Maybe I should remove the default GW on the LVS director? I am not 
really sure what has been overlooked and I would be very grateful for 
some pointers toward the right answer. I did apply the hidden patch to 
the Kernel on the backends and the hidden is activated as well.
If you need further information, please let me know


NET SETUP

(one net, all hosts are in 172.16.0.0/16)
LVS real IP = 172.16.100.120
LVS virtual IP = 172.16.100.160

Backend1 real IP = 172.16.100.110
backend2 real IP = 172.16.100.111

backend and LVS are connected via a switch. To all machines within 
172.16.0.0/16 the 172.16.1.1 is the default gw.



backend 1
(I made sure, that this uses lo:110)
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  
irtt Iface
172.16.100.160  0.0.0.0         255.255.255.255 UH       40 0          
0 lo
172.16.0.0      0.0.0.0         255.255.0.0     U        40 0          
0 eth0
127.0.0.0       0.0.0.0         255.0.0.0       U        40 0          
0 lo
Interfaces for backend1
eth0      Link encap:Ethernet  HWaddr 00:04:75:CA:D0:10
          inet addr:172.16.100.110  Bcast:172.16.255.255  
Mask:255.255.0.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1


lo:110    Link encap:Local Loopback
          inet addr:172.16.100.160  Mask:255.255.255.255
          UP LOOPBACK RUNNING  MTU:16436  Metric:1


LVS Director ipvsadm table:
(I am trying with ssh too, since telnet is not on all machines)
IP Virtual Server version 1.0.7 (size=1048576)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  lvs:ssh rr
  -> RS2:ssh                      Route   1      0          1
  -> RS1:ssh                      Route   1      0          0
TCP  lvs:telnet rr
  -> RS1:telnet                   Route   1      0          0
  -> RS2:telnet                   Route   1      0          0

LVS Director
(I did make sure that the route really uses dev eth0:110)
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  
irtt Iface
172.16.100.160  0.0.0.0         255.255.255.255 UH       40 0          
0 eth0
172.16.0.0      0.0.0.0         255.255.0.0     U        40 0          
0 eth0
127.0.0.0       0.0.0.0         255.0.0.0       U        40 0          
0 lo
0.0.0.0         172.16.1.1      0.0.0.0         UG       40 0          
0 eth0

Interfaces for LVS Director




eth0      Link encap:Ethernet  HWaddr 00:04:75:C5:8B:EE
          inet addr:172.16.100.120  Bcast:172.16.255.255  
Mask:255.255.0.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1


eth0:110  Link encap:Ethernet  HWaddr 00:04:75:C5:8B:EE
          inet addr:172.16.100.160  Bcast:172.16.100.160  
Mask:255.255.255.255
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1


lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1



- Face me and you shall surely perish.