21 Juni 2012 22:06
I am running into an issue with our Exchange DAG. We currently have a single Exchange server on-premises hosting about 40 mailboxes. We have a 2nd Exchange server at our datacenter connected via VPN with a 50Mbps comcast connection. Recently, Comcast swapped an old model (motorola surfboard I believe) for a new Docsis 3.0 unit. Ever since, the DAG still replicates correctly, however all other traffic over the Comcast WAN is significantly much slower. Web traffic suffers 5 second delays and loads web pages slowly. Speed tests show about 5Mbps down. As soon as we disable the VPN or take down one of the Exchange servers, web traffic is speedy and speed tests show around 50Mbps.
I suspect the issue could be with how the Comcast Docsis router is handling replication traffic, but I am not entirely sure at the moment. Is there something I am missing or something I should be trying to prove or disprove this theory? I saw this KB http://support.microsoft.com/kb/951037 mentioned in another thread http://social.technet.microsoft.com/Forums/zh/exchange2010/thread/57fc122f-f6ef-469f-8af0-6985edea7589, and thought about giving it a try. Thoughts? Thanks in advance.
22 Juni 2012 13:15
Start with perfmons [http://technet.microsoft.com/en-us/library/ff367871.aspx] and pay special attention to the replication counters.
Can you also check utilization of the link?
Casper Pieterse, Principle Consultant - UC, Dimension Data North America, Microsoft Certified Master: Exchange 2007 / 2010
25 Juni 2012 7:36ModeratorHi GIchicago,
Per your description, that seems the replication flow cost too much bandwidth, and per my know, we could configure the different session to use different bandwidth on the network devices.
Actually, it is mostly like a network issue.
TechNet Community Support
- Ditandai sebagai Jawaban oleh Gavin-ZhangModerator 08 Juli 2012 14:41
30 Juli 2012 15:30
"we could configure the different session to use different bandwidth on the network devices."
How would I go about this?
02 Agustus 2012 3:09Moderator