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New Member

ACE: How to implement multiple services on a pair of servers

We plan to loadbalance two mail servers which offer several services like http, imap and pop3. Those services are independent from each other.

Our idea is to use an own serverfarm for each service, something like that :

probe http http-probe

...

probe imap imap-probe

...

probe pop3 pop3-probe

...

serverfarm host http-farm

predictor leastconns

probe http-probe

rserver server1

inservice

rserver server2

inservice

serverfarm host imap-farm

predictor leastconns

probe imap-probe

rserver server1

inservice

rserver server2

inservice

serverfarm host pop3-farm

predictor leastconns

probe pop3-probe

rserver server1

inservice

rserver server2

inservice

Is that approach meaningful at all ?

Can we use a common vip for all serverfarms or do we have to assign a unique vip for each farm ?

How do we distinguish between the different requests ?

Has somebody a sample configuration for that ?

Thank you very much in advance.

4 REPLIES
Cisco Employee

Re: ACE: How to implement multiple services on a pair of servers

If the 3 services run on the same port, using different serverfarm does not make sense just because the problem would be different.

If they run on different ports, then you have the distinction that you need to split the config.

Gilles.

New Member

Re: ACE: How to implement multiple services on a pair of servers

Thank you Gilles.

The services run on the standard ports, which are different from each other.

Ok, but back to my question : do I have to use different VIPs or can I use the same one for all ? Do you have an example config ?

Re: ACE: How to implement multiple services on a pair of servers

If ports are different you can use the same vip.

Syed

New Member

Re: ACE: How to implement multiple services on a pair of servers

I need the same sort of setup - does anyone have an example config with the VIP section included?

Thanks

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