Quality of Service (QoS) Tagging for Microsoft* Windows* 2000 Server and Microsoft Windows Server* 2003

QoS allows the adapter to send and receive IEEE 802.3ac tagged frames. 802.3ac tagged frames include 802.1p priority-tagged frames and 802.1Q VLAN-tagged frames. In order to implement QoS, the adapter must be connected to a switch that supports and is configured for QoS. Priority-tagged frames allow programs that deal with real-time events to make the most efficient use of network bandwidth. High priority packets are processed before lower priority packets. 

To implement QoS, the adapter must be connected to a switch that supports and is configured for 802.1p QoS. 

Tagging is enabled and disabled using the "QoS Packet Tagging" field in the Advanced tab in Intel® PROSet. 

Once QoS is enabled in Intel PROSet, you can specify levels of priority based on IEEE 802.1p/802.1Q frame tagging.

Microsoft* Windows* 2000 Server and Windows Server* 2003 have a utility for 802.1p packet prioritization. For more information, see the Windows system help and Microsoft's knowledge base.

QoS Load Balancing in a Team

Adaptive Load Balancing (ALB) and Static Link Aggregation (SLA) teams can use QoS load balancing to add priority as a factor in the load balancing process.  Teams with QoS load balancing enabled will try to expedite high priority packet transmission.

NOTE: QoS Load Balancing Bandwidth reserves whole adapters for high priority traffic.  It does not do real-time flow analysis and control.  For example, if you have a three-adapter team and reserve 95% of the bandwidth for high priority traffic, two adapters are reserved for high priority traffic; the third adapter can pass both high and low priority traffic.


Last modified on 6/06/06 3:27p Revision 4