HP StorageWorks 8/80 Brocade Converged Enhanced Ethernet Administrator's Guide - Page 121
Configuring the QoS trust mode, TABLE 15
View all HP StorageWorks 8/80 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 121 highlights
Queueing 9 Table 15 presents the Layer 2 QoS untrusted user priority generation table. TABLE 15 Default priority value of untrusted interfaces Incoming CoS User Priority 0 port (default 0) 1 port (default 0) 2 port (default 0) 3 port (default 0) 4 port (default 0) 5 port (default 0) 6 port (default 0) 7 port (default 0) NOTE Non-tagged Ethernet frames are interpreted as incoming CoS value of 0 (zero). You can override the default user-priority mapping by applying explicit user-priority mappings. When neighboring devices are trusted and able to properly set QoS then Layer 2 QoS trust can be set to COS and the IEEE 802.1Q default-priority mapping is applied. Table 16 presents the Layer 2 CoS user priority generation table conforming to 802.1Q default mapping. You can override this default user priority table per port if you want to change (mutate) the COS value. TABLE 16 IEEE 802.1Q default priority mapping Incoming CoS User Priority 0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 Configuring the QoS trust mode The QoS trust mode controls user priority mapping of incoming traffic. The Class of Service (CoS) mode sets the user priority based on the incoming CoS value. If the incoming packet is not priority tagged, then fallback is to the Interface Default CoS value. NOTE When a CEE map is applied on an interface, the qos trust command is not allowed. The CEE map always puts the interface in the CoS trust mode. Converged Enhanced Ethernet Administrator's Guide 101 53-1001346-01