Ruling Out Network-Bound Problems
Topic Last Modified: 2005-05-18
The network and how it is deployed is essential to the proper performance of an Exchange server. It is uncommon for networks to be network-bound, because 100 Mbps networks generally offer enough bandwidth for most organizations. However, with increasing message sizes and users per server, it is important to ensure the network does not become a choking point.
Use the counters listed in the following table to determine whether there is any network performance degradation.
Performance Counters for Network
Network Interface\Bytes Total/sec
Indicates the rate at which the network adapter is processing data bytes.
This counter includes all application and file data, in addition to protocol information such as packet headers.
Network Interface\Packets Outbound Errors
Indicates the number of outbound packets that could not be transmitted because of errors.
The following item describes how you can improve network performance:
Segment inter-server and global catalog traffic
When there is much traffic, and therefore overhead due to packet collision, you can improve network performance by separating inter-server and global catalog traffic from client traffic. You can do this by having servers and global catalogs with dual network adapters, and by building a separate network for the communication required by servers and global catalogs.