Friday, April 10, 2015

Lync 2013 DNS Records


Lync 2013 DNS Records

This Blog we will see what are all the DNS Records needs to create for Lync Deployment.

I could see so many quarries on TechNet article about Creating Dns entries.

Overview
DNS A Record
DNS SRV Record

What is A Record?
The record A specifies IP address (IPv4) for given host. A records are used for conversion of domain names to corresponding IP addresses.

What is DNS SRV Record?
A Service record (SRV record) is a specification of data in the Domain Name System defining the location, i.e. the hostname and port number, of servers for specified services.

Here is the List of DNS Records which you need to create

Internal DNS Records

Record Type                                                                                      
Value
Points to
A
lyncdiscoverinternal.contoso.com
Lync front end server/Front End Pool
A
lync.contoso.com
Lync front end server/Front End Pool
A
sip.contoso.com
Lync front end server(multiple A records if enterprise pool)
A
dialin.contoso.com
Lync front end server/Front End Pool
A
meet.contoso.com
Lync front end server/Front End Pool
A
Admin.contoso.com
Lync front end server/Front End Pool


SRV Records

Record Type
Value
Port
Points to
SRV
_ntp._udp.Contoso.com
123
Domain Controller/Time Server
SRV
_sip._tls.contoso.com
5061
Sip.contoso.com
SRV
_sipfederationtls.contoso.com
5061
Sip.contoso.com
SRV
_sipinternaltls.contoso.com
5061
Sip.contoso.com
SRV
_xmpp-server._tcp.contoso.com
5061
Sip.contoso.com

External DNS Records

Record Type                                                                                      
Value
Points to
A
lyncdiscover.contoso.com
Reverse proxy
A
Lyncwebext.contoso.com
Reverse proxy
A
sip.contoso.com
Edge server IP Address
A
dialin.contoso.com
Reverse Proxy
A
meet.contoso.com
Reverse Proxy
A
AV.contoso.com
Edge serve IP Address as per topology

Record Type
Value
Port
Points to
SRV
_sip._tls.contoso.com
5061
Sip.contoso.com
SRV
_sipfederationtls.contoso.com
5061
Sip.contoso.com
SRV
_xmpp-server._tcp.contoso.com
5269
Sip.contoso.com

Here are steps to create the DNS A records

Go to DNS server.

Select the Domain Name. Right click on domain.
Under that Select New Host (A or AAAA)

Fil the Fields
Ex:
Name: SIP
IP Address : 192.168.0.35



Creating SRV Records

Here are steps to create the DNS A records

Go to DNS server.
Select the Domain Name. Right click on domain.
Under that select Other New Records


In the below window select SRV
























3 comments:

  1. What about pool pairing? If I have two pools in a paired pool configuration does each pool get it's own A record or does the lyncdiscoverinternal A record contain the FE servers from both pools? If the FE server you connect is not in the pool for your account does it redirect to the other pool?

    ReplyDelete
  2. Hi, according to the TechNet article _sip._tls.domain.com should pointed to 443 tcp port:

    External DNS

    SRV record

    443

    _sip._tls.contoso.com

    sip.contoso.com

    An external interface for your Access Edge service. This SRV record is required for Skype for Business Server 2015, Lync Server 2013, and Lync Server 2010 clients to work externally. You'll need one for every domain with Skype for Business users.

    https://technet.microsoft.com/en-us/library/mt346415.aspx

    ReplyDelete
  3. How can you have an A record for a Front End Pool. A records need IP address, not FQDN.

    ReplyDelete