Cisco Cisco Expressway
DNS Records
■
The FQDNs of all Microsoft FE servers are resolvable by the DNS server used by the Gateway Expressway
(Gateway Expressway and FE Servers should use the same DNS server).
(Gateway Expressway and FE Servers should use the same DNS server).
■
The FQDNs of each Gateway Expressway is resolvable by DNS. If the Gateway Expressway is a cluster, the
FQDN of the cluster must be resolvable by DNS (with a round-robin A-record for each peer).
FQDN of the cluster must be resolvable by DNS (with a round-robin A-record for each peer).
■
The DNS server must support reverse DNS lookup (typically by PTR records) if you enable TLS (recommended).
Configuration Overview
This document describes how to configure Lync and the Expressway in B2BUA mode to enable:
1.
Unified CM-registered endpoints to call internal or external Lync clients registered to Lync (
)
2.
Internal or external Lync clients to call Unified CM-registered endpoints (
)
3.
Screen sharing from Lync clients to Unified CM-registered endpoints (
)
4.
Chat/presence between Cisco Jabber and Microsoft soft clients (Lync 2013, Skype for Business)
.
The configuration process describes each of these stages separately, so that individual stages can be implemented
and tested before moving on to the next.
and tested before moving on to the next.
14
Cisco Expressway with Microsoft Infrastructure Deployment Guide
Configuration