Installation and Configuration Manual 6. Configuring Survivable Branch Appliance
SBA for Microsoft Lync 165 December 2010
6.3 Configuring SBA Media Gateway
Once the SBA application is installed and configured as described in the previous sub-section,
you can begin configuring the SBA media gateway as described below.
¾ To configure the SBA Media Gateway:
1. Connect to the OSN/SBC (refer to Section 3.2), an
d then complete the on-site/on-domain
SBA application installation.
2. Configure the SBA Media Gateway: Since the SBA application is running the Mediation
Server, most of the configuration of the Enhanced Media Gateway described in Section 4
also applies to the SBA M
edia Gateway deployed at the branch office.
a. Exception 1: The DNS load balancing configuration is not required as this functionality
interfaces with only one Mediation Server which is co-located on the same hardware
chassis as the SBA Media Gateway. Therefore, follow the procedures in Section 4, but
ski
p Step 9 of Section 4.1.
b. Exceptio
n 2: According to the SBA specification, if the SBA application fails, the SBA
Media Gateway must switchover to the Mediation Server at the Data Center. Therefore,
you should configure the Proxy Sets Table (refer to Section 4.1) with two proxies:
♦ Index 1: The IP address/FQDN of the Mediation Server running on the SBA.
♦ Index 2: The IP address/FQDN of the Mediation Server running at the Data
Center.
Figure 6-89: Defining Proxy Sets for SBA Media Gateway
c. Exception 3: If the SBA application fails and the Media Gateway switches over to the
Mediation Server at the Data Center, when the SBA application resumes functionality,
the Gateway should switch back the Mediation Service on the SBA application.
Therefore, the Homing mode should be configured on the gateway.
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