Cisco Cisco Expressway
■
If the Microsoft environment has no Director but a Hardware Load Balancer in front of Front End Servers, then
the B2BUA should be configured to route calls for Microsoft users to the Hardware Load Balancer, and receive
calls from any of the FE Servers:
the B2BUA should be configured to route calls for Microsoft users to the Hardware Load Balancer, and receive
calls from any of the FE Servers:
—
The Gateway B2BUA needs to specify the Hardware Load Balancer as the Microsoft signaling destination
address.
address.
—
The Gateway B2BUA needs to include the addresses all of the Microsoft FE Servers as trusted hosts.
—
Search rules that route calls to Microsoft will target the B2BUA neighbor zone.
■
If the Microsoft environment is a single FE Server, then the B2BUA should be configured to route calls for
Microsoft users directly to that FE Server, and to receive calls from that FE Server:
Microsoft users directly to that FE Server, and to receive calls from that FE Server:
—
The Gateway B2BUA needs to specify the FE Server as the Microsoft signaling destination address.
—
The Gateway B2BUA needs to include the address of the FE Server as a trusted host.
—
Search rules that route calls to Microsoft will target the B2BUA neighbor zone.
Multiple Microsoft Domains and Multiple Gateway Expressways
You can integrate Cisco collaboration infrastructure with more than one Microsoft domain if required. Wherever you
put a single Expressway as a gateway, you could use a cluster instead.
put a single Expressway as a gateway, you could use a cluster instead.
The diagram below shows the following different options:
1.
This option is used in this document; there is one gateway Expressway (or cluster) into a single Microsoft
domain.
domain.
2.
One gateway or gateway cluster serving multiple Microsoft domains. Requires multiple search rules to route
the calls to and from Microsoft infrastructure correctly.
the calls to and from Microsoft infrastructure correctly.
3.
It is possible to configure multiple Microsoft domains with an independent gateway serving each. This option
is not exhaustively tested, nor is it described in this document.
is not exhaustively tested, nor is it described in this document.
4.
You should avoid configuring multiple gateways to serve one Microsoft domain.
With this deployment, calls from one video endpoint to another video endpoint that is called via its Microsoft
domain will get routed via Microsoft infrastructure rather than directly through the collaboration infrastructure;
users could lose duo video, far end camera control, and possibly encryption and video quality.
domain will get routed via Microsoft infrastructure rather than directly through the collaboration infrastructure;
users could lose duo video, far end camera control, and possibly encryption and video quality.
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Cisco Expressway with Microsoft Infrastructure Deployment Guide
Appendix 3: Extended Microsoft Deployments