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possible to have real servers connect to other vips?

triplecap
Level 1
Level 1

I'm investigating migrating our Nortel load balancers over to a CSM module. One of the short comings I've had with Nortel is that I haven't been able to get real servers to connect to other vips hosted on the same load balancer.

For example (this is what I'll need the CSM to be able to do):

VIP1 has Farm1 consisting of real servers A & B.

VIP2 has Farm2 consisting of real servers C & D.

VIP1 will handle http traffic whereas VIP2 will handle smtp traffic. Is it possible to configure the CSM to have real servers A & B be able to send smtp traffic to VIP2? I haven't been able to get Nortel to do this.

Thanks in advance,

Eric

1 Reply 1

Gilles Dufour
Cisco Employee
Cisco Employee

Eric,

this is possible with CSM.

Nothing special to be done except if the reals are in the same subnet.

In this casr you need to create a serverfarm with client nat enable so the servers will send the response to the CSM and not directly to the other real server.

You can do this like this:

static nat x.x.x.x

real a.a.a.a

real b.b.b.b

serverfarm farm2-nat

real c.c.c.c

inservice

real d.d.d.d

inservice

nat server

nat client static

serverfarm farm2

real c.c.c.c

real d.d.d.d

vserver vip2-nat

vip x.x.x.x

vlan [server-vlan]

serverfarm farm2-nat

ins

vserver vip2

vip x.x.x.x

serverfarm farm2

ins

That's just an example.

If you need more detail, you can send your actual config and we will adjust it.

Gilles.

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