Topic Last Modified: 2011-05-11

To successfully complete this procedure, you should be logged on to the server or domain minimally as a member of the Domain Admins group or a member of the DnsAdmins group.

You need to configure the required Domain Name System (DNS) records prior to publishing your topology in Topology Builder. Additionally, some of the fully qualified domain names (FQDNs) used in the configuration of a Microsoft Lync Server 2010 deployment are logical and not physical server FQDNs, so additional DNS configuration is required prior to publishing.

Warning:
Lync Server 2010 does not support single-labeled domains. For example, a forest with a root domain named contoso.local is supported, but a root domain named local is not supported. For details, see Microsoft Knowledge Base article 300684, “Information about configuring Windows for domains with single-label DNS names,” at http://go.microsoft.com/fwlink/?LinkId=143752.

Prior to operating the topology after it has been deployed, you should ensure that the following Active Directory and DNS records are created (as your needs for specific features dictate):

The table follows the reference architectures presented in the Planning section. For details, see Topologies for External User Access in the Planning documentation.

DNS Records Required for the Front End Pool

Location Type FQDN Maps to/Comments

Internal DNS

A

pool01.contoso.net

Pool01 (DNS load balancing)

Internal DNS

A

pool01.contoso.net

Pool01 (DNS load balancing)

Internal DNS

A

pool01.contoso.net

Pool01 (virtual IP (VIP) of hardware load balancer)

Internal DNS

A

fe01.contoso.net

Pool01 Front End Server (NODE 1)

Internal DNS

A

fe02.contoso.net

Pool01 Front End Server (NODE 2)

Internal DNS

A

lsweb.contoso.net

Pool01 (VIP) for client-to-server web traffic

Internal DNS

A

sqlbe.contoso.net

Pool01 Back End Server running Microsoft SQL Server 2008, Microsoft SQL Server 2008 R2, or Microsoft SQL Server 2005

Internal DNS

A

sip.contoso.com

Required for Microsoft Lync 2010 Phone Edition, or automatic logon of clients without DNS SRV records, and for strict domain matching. Not required in all cases.

Internal DNS

A

sip.fabrikam.com

Assumes a second SIP domain. Required for Microsoft Lync 2010 Phone Edition, automatic logon of clients without DNS SRV records, and for strict domain matching. Not required in all cases.

Internal DNS

A

dialin.contoso.com

Simple URL for dial-in conferencing published internally – Front End Server (or Director, if installed) responds to simple URL queries

Internal DNS

A

meet.contoso.com

Simple URL for conferences published internally – Front End Server (or Director, if installed) responds to simple URL queries

Internal DNS

A

admin.contoso.com

admin

Optional record, simple URL for Microsoft Lync Server 2010 Control Panel published internally - Front End Server (or Director, if installed) responds to simple URL queries. Host name only (no domain name) is recommended.

Note:
VIP = virtual IP address for hardware load balancer

DNS SRV Records for the Front End Pool

Location Type FQDN Anchor Host Record Port Maps to/Comments

Internal DNS

SRV

_sipinternaltls._tcp.contoso.com

pool01.contoso.com

5061

Required for automatic configuration of Lync 2010 clients to work internally

Internal DNS

SRV

_sipinternaltls._tcp.fabrikam.com

pool01.fabrikam.com

5061

Required for automatic configuration of Lync 2010 clients to work internally

Internal DNS

SRV

_ntp._udp.contoso.com

dc01.contoso.com

123

Network Time Protocol (NTP) source required for Microsoft Lync 2010 Phone Edition-based devices. Internally, this should point to the domain controller. If the domain controller is not defined, it will try to use the NTP server time.windows.com