Dell POWEREDGE M1000E - Manual (Page 108)

68 Fabric OS Administrator’s Guide
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Inter-switch links
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FIGURE 7 Virtual Channels on a 1/2/4 Gbps ISL
Quality of Service (QoS) is a licensed traffic shaping feature available in Fabric OS. QoS allows the
prioritization of data traffic based on the SID/DID of each frame. Through the use of QoS zones,
traffic can be divided into three priorities: high, medium, and low. The seven data VC channels,
VC8-14, are used to multiplex data frames based upon QoS Zones when congestion occurs. For
more information on QoS zones refer to
Chapter 18, “Optimizing Fabric Behavior” .