Cisco Cisco Expressway
Prerequisites prior to configuring Expressway and Lync to
interoperate
interoperate
Before configuring the video network and the Lync environment to interwork, make sure that:
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The “Lync gateway” Expressway (cluster peers) are running X8.1 code (or later)
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The “Lync gateway” Expressway (cluster peers) have a rich media sessions option key applied.
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The version of Lync is Lync 2010 or Lync 2013.
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Lync is configured and operational and access is available to Active Directory for managing users.
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The FQDN of all Lync servers is resolvable via the DNS server that the “Lync gateway” Expressway is
configured to use (this should be the DNS server used by Lync).
configured to use (this should be the DNS server used by Lync).
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The FQDNs of each of the “Lync gateway” Expressways and if clustered, the FQDN of the “Lync gateway”
cluster must be resolvable via DNS (with round-robin A-records).
cluster must be resolvable via DNS (with round-robin A-records).
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Validation of the Front End Servers on all Lync Directors and Lync FEPs must show no errors. Use the
Topology Validation Tool which can be found in the Lync Resource Toolkit.
Topology Validation Tool which can be found in the Lync Resource Toolkit.
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If TLS is to be used (recommended) ensure that the DNS server supports reverse DNS lookup (often
supported using PTR records).
supported using PTR records).
Microsoft Lync and Cisco Expressway Deployment Guide (X8.5)
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Introduction