Supported Load Balancer affinity using

Microsoft Exchange Server

2010

If your environment uses

Microsoft Exchange Server

2010 to connect to

BEMS

, you can configure the Load Balancer to use Cookie-based or Source IP-based affinity.

Configuring affinity provides the ability for the load balancer to maintain a connection between the

BEMS

instance and the specific

Microsoft Exchange Server

node that

BEMS

is connected to. Configuring affinity in your

Microsoft Exchange Server

2010 environment is important because in the

Microsoft Exchange Server

2010, the

Microsoft Exchange Web Services

(EWS) subscriptions reside on the client access server (CAS). CAS nodes are usually referenced using a logical array name. When

BEMS

makes a request to the CAS, it makes a request for the user and the CAS returns the subscription that references that request for the user. You must make sure that the CAS that

BEMS

makes the EWS subscription request to is the same CAS that

BEMS

connects to with the subscription.

BEMS

batches the subscription requests and submits the batch request to the CAS. For more information about configuring affinity on the Load Balancer, refer to your Load Balancer documentation.