Re: CSS 11503 load-balancing with MS Print Servers

joshw · ‎02-14-2003

We are trying to load-balance print server connections between 2 MS print servers. When we try to connect to the print servers name, (\\PS01) or even the VIP address, we get a Path not found error. However, if we direct the path to the actual name or ip address of the print servers (not the VIP), we can view all the queues and connect/print to them. Is this possible to do on the CSS 11503? Thanks.

pknoops · ‎02-14-2003

Ok, couple of things here

1. Is the default gateway of the print servers the CSS ?

2. Are the print servers responding back directly to the client machines, In other words is it possible you need to NAT the servers using a source group that would NAT the servers response to the VIP address

group printservers

vip address 10.1.1.1

add service pserver1

add service pserver2

active

Regards

Pete Knoops

Cisco Systems

joshw · ‎02-14-2003

Pete- Here is our config. See any problems?

configure

!*************************** GLOBAL ***************************

ip route 0.0.0.0 0.0.0.0 1.100.100.100 1

!************************* INTERFACE *************************

interface 1/2

bridge vlan 2

!************************** CIRCUIT **************************

circuit VLAN1

ip address 1.100.101.110 255.0.0.0

circuit VLAN2

ip address 10.100.249.1 255.255.255.0

!************************** SERVICE **************************

service ps01

ip address 10.100.249.5

active

service ps02

ip address 10.100.249.6

active

!*************************** OWNER ***************************

owner printserver

content L3_Basic

add service ps01

add service ps02

vip address 1.100.100.35

pknoops · ‎02-14-2003

Josh,

Config looks fine. L3 rule should be fine. Is the default gateway of the print servers the CSS ?

You may have to do the following

group pservers

vip address 1.100.100.35

add service ps01

add service ps02

active

Pete..

joshw · ‎02-14-2003

Yes, the default gateway is the CSS Vlan interface 10.100.249.1/24. What is the difference between a group and a content rule?

josh

pknoops · ‎02-14-2003

The group will perform NATing on the CSS. You want to make sure that responses from the PS get NATd to the VIP address as this is what the client station is expecting the response to come from

Pete..

joshw · ‎02-14-2003

Thanks Pete for the help. As soon as I added the group config, everything seems to work fine. Thanks again!

josh

pknoops · ‎02-14-2003

Great News !!!!

Pete..

joshw · ‎06-04-2003

Sorry to bring this issue back-up, but how do you ensure that that the return traffic is being NAT'd back to the VIP? I think I am having the problem where the return traffic is being sourced from the real address.