08-11-2005 12:02 PM
Hi,
Have been trying to configure Direct Server Return on CSM but without much success.
Attached is the config, Hopefully somebody can enlighten me.
In addition, on my server end (MS Win 2003), I have configure loopback adapter with the same address with my VIP.
This is done according to Cisco documentation however I haven't been able to remove the static route created by this adapter as instructed by the document.
Is there any other additional things need to be configure on the server ? (e.g Ip forwarding)
Pls advise. Thanks a million.
08-12-2005 01:05 AM
the config looks good.
What is not working ?
Is the server responding ?
Where is the server forwarding the response ?
Is the server responding with the loopback address ?
Capture a sniffer trace on the server and see what is going on.
Regards,
Gilles.
08-12-2005 11:03 AM
Hi Gilles,
Sorry about the config as there is some error.
The additional serverfarm that I would like to loadbalance using direct server return is as below.
vlan 12 server
ip address 192.168.198.6 255.255.255.0
alias 192.168.198.7 255.255.255.0
!
vlan 204 client
ip address 204.127.198.6 255.255.255.0
gateway 204.127.198.4
alias 204.127.198.7 255.255.255.0
vserver TEST1
virtual 204.127.198.11 udp dns
unidirectional
serverfarm TEST1
advertise active
idle 4
replicate csrp connection
no persistent rebalance
inservice
!
serverfarm TEST1
no nat server
no nat client
real name LZNSUN01
inservice
real name LZNSUN02
inservice
real name LZNSUN03
inservice
probe DNS
probe TESTVIP11
!
real W2K3Stream01
address 192.168.199.101
inservice
real W2K3Stream02
address 192.168.199.102
inservice
real W2K3Stream03
address 192.168.199.103
inservice
As you can see I did not an additional Vlan on the CSM for the newly created serverfarm.
I have capture a sniffer trace and I have realise that client packet are not forwarded from the CSM to the real server even though the probe have verify that the real servers are operational.
As such the real servers is not forwarding the packets back to my client.
Pls advise. Thanks
08-13-2005 05:19 AM
for direct server return, the servers need to be L2 adjacent to the CSM becasuse the CSM is not going to nat the destination ip and just change the mac addresses.
Create a vlan for subnet 192.168.199.0/24 and everything should work.
Gilles.
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