One-Armed Load Balancing

Unanswered Question
Feb 16th, 2007

Can CSS 11000 load balance multiple server farms, using different load balancing algorithms on the same ip subnet and having multiple VIPs in the one-armed configuration.

I know this is not an ideal configuration but have to do it for a relocation project.

Thank yoi

I have this problem too.
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michael.e.reid Thu, 02/22/2007 - 01:27

Yes, this can be done.

You need a trunk connection to the switch obviously to carry your VIP vlan, and server VLAN, then the configuration of services, and content rules is the same as if you use multiple interfaces.

Gilles Dufour Thu, 02/22/2007 - 06:05

if you use a trunk this is not one-armed anymore. one-armed refer to 1 vlan and 1 interface for all in/out traffic.

Gilles.

Gilles Dufour Thu, 02/22/2007 - 06:04

yes you can.

No need for a trunk.

But you have to keep in mind that the CSS must see both sides of a connection.

So, obviously the traffic from the client will hit the CSS vip, but for the server response, you have to make sure it goes back to the CSS.

This can be done with source nating or policy routing.

Gilles.

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