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The OCS deployment guides have step-by-step instructions on creating the necessary DNS SRV records in Windows DNS Server, but what if you're using BIND as your external Internet-facing DNS server?
First you'll need an A record for the external IP address of your Access Edge:
e.g. sip.contoso.com -> 192.168.0.1
And you'll need the relevant SRV records for federation and remote user access:
e.g. _sipfederationtls._tcp.contoso.com and _sip._tls.contoso.com
So what should these look like in BIND?
_sipfederationtls._tcp.contoso.com. 86400 IN SRV 0 0 5061 sip.contoso.com.
_sip._tls.contoso.com. 86400 IN SRV 0 0 443 sip.contoso.com.
If we break that down:
_sipfederationtls._tcp.contoso.com. - that is the SRV record name. Notice the ' . ' on the end.
86400 - that is the TTL, in seconds.
IN - class
SRV - the record type
0 - priority
0 - weight
5061 - port number
sip.contoso.com. - the A record of the Access Edge. Notice the ' . ' on the end.
More information on this at https://www.zytrax.com/books/dns/ch8/srv.html
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Technorati Tags: ocs, dns, bind, srv, federation
Comments
- Anonymous
January 01, 2003
The comment has been removed - Anonymous
June 13, 2008
The comment has been removed - Anonymous
March 05, 2011
Hi Johan, Where did you get the values of the SRV recored? I'm talking about weight, class, priority etc? Many thanks, Sebastiaan