Why would the FE Servers On-Prem in Lync 2013 try to reach All the DC's in Domain? How can we limit the connection to one of two DC's?
I have been working on finding if there is way to limit the number of DCs to which Lync 2013 would like to connect to. This is an event that is frequently reported. All of the IPs belong to DC but I would like to know why the Lync Server needs to reach DCs on port 5061. Any thoughts?
12/11/2014 09:56:30 AM
LogName=Lync Server
SourceName=LS Protocol Stack
EventCode=14584
EventType=2
Type=Error
ComputerName=
TaskCategory=LS Protocol Stack
OpCode=None
RecordNumber=1122212
Keywords=Classic
Message=Connection attempt to at least one service in a pool failed.
Connection attempts to the following services have failed. Another attempt will be made for each service every 10 minutes.
Service Address: 10.4.8.103:5061; Pool FQDN: *.org; Down Time: 0:00
Cause: The specified service(s) are unavailable.
Resolution:
Check the servers in the pool(s) on which the service(s) are installed.
12/11/2014 09:56:30 AM
LogName=Lync Server
SourceName=LS Protocol Stack
EventCode=14584
EventType=2
Type=Error
ComputerName=
TaskCategory=LS Protocol Stack
OpCode=None
RecordNumber=1122212
Keywords=Classic
Message=Connection attempt to at least one service in a pool failed.
Connection attempts to the following services have failed. Another attempt will be made for each service every 10 minutes.
Service Address: 10.4.8.103:5061; Pool FQDN: *.org; Down Time: 0:00
Cause: The specified service(s) are unavailable.
Resolution:
Check the servers in the pool(s) on which the service(s) are installed.
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ASKER
We have TMG in a DMZ and we're also using a Director role in our environment. Does that make a difference?
Nope.
ASKER
Thanks!
ASKER
I constantly get these from SCOM...related to Lync 2013. Could this be related?
Alert: [LYNC] The number of requests currently in processing by application that have not yet been authenticated or are processed anonymously.
Source: Application Pool [LM_W3SVC_34577_ROOT_Group
Path: LyncServer.Domain.org
Last modified by: System
Last modified time: 12/22/2014 1:21:58 PM Alert description: Perf Object Name:
Perf Counter Name: WEB - Unauthenticated Requests In Processing Perf Counter Value: 4294967296 Error Threshold: 2499 Warning Threshold: 2000 Delta Window Size: 3 Dynamic Instance. Name: Application Pool DependencyId: ApplicationPool Symbol Prefix: WEBAUTH Category: LS:WEB - Throttling and Authentication Discover Interval: 14400 Excluded Instances:
Please see the 'Product Knowledge' and the 'Alert Context' tab on Alert Properties view for more information.
Alert: [LYNC] The number of requests currently in processing by application that have not yet been authenticated or are processed anonymously.
Source: Application Pool [LM_W3SVC_34577_ROOT_Group
Path: LyncServer.Domain.org
Last modified by: System
Last modified time: 12/22/2014 1:21:58 PM Alert description: Perf Object Name:
Perf Counter Name: WEB - Unauthenticated Requests In Processing Perf Counter Value: 4294967296 Error Threshold: 2499 Warning Threshold: 2000 Delta Window Size: 3 Dynamic Instance. Name: Application Pool DependencyId: ApplicationPool Symbol Prefix: WEBAUTH Category: LS:WEB - Throttling and Authentication Discover Interval: 14400 Excluded Instances:
Please see the 'Product Knowledge' and the 'Alert Context' tab on Alert Properties view for more information.
Possibly. Tough to tell for sure.
ASKER
Comments were very helpful! Still looking for a solution, but comments pointed me in right direction.
ASKER
The actual Pool ID has been purposely omitted. So I don't think DNS is the issue. What protocol will Lync use to contact a DC? And is there a way to limit it to certain DC's in same site i.e. Exchange?