HP StorageWorks 1606 Brocade Fabric OS Administrator's Guide v6.3.0 (53-100133 - Page 250
Limitations and restrictions of Virtual Fabrics
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10 Limitations and restrictions of Virtual Fabrics TABLE 44 Virtual Fabrics interaction with Fabric OS features (Continued) Fabric OS feature Virtual Fabrics interaction FC-FC Routing Service FICON Interoperability mode Licensing Performance monitoring Port mirroring QoS Traffic Isolation All EX_Ports must reside in a base switch. You cannot attach EX_Ports to a logical switch that has XISL use enabled. You must use ISLs to connect the logical switches in an edge fabric. Only 8-Gbps ports are allowed to be used as FC router EX_Ports, with the exception of VEX_Ports on the FR4-18i blade. See Chapter 21, "Using the FC-FC Routing Service," for more information about Virtual Fabrics and FC-FC routing. Up to two logical switches per chassis can run FICON Management Server (CUP), but the FICON logical switch must use ISLs and not XISLs. In interoperability modes 2 and 3, you cannot use XISL in the logical fabric. The logical switches must be connected only with ISLs. Licenses are applicable for all logical switches in a chassis. Performance monitors are supported in a limited number of logical switches, depending on the platform type. See Chapter 17, "Administering Advanced Performance Monitoring," for more information about performance monitoring when Virtual Fabrics are enabled. Port mirroring is not supported when Virtual Fabrics is enabled. QoS VCs are maintained across the base fabric. See Chapter 18, "Optimizing Fabric Behavior," for more information about using the Adaptive Networking features with Virtual Fabrics. Traffic Isolation zones with failover disabled are not supported in logical fabrics. See Chapter 18, "Optimizing Fabric Behavior," for additional information about using TI Zones with Virtual Fabrics. Limitations and restrictions of Virtual Fabrics The maximum number of logical switches per chassis varies depending on the switch model. Table 45 lists the supported platforms and the maximum number of logical switches (including the default logical switch) supported on each. TABLE 45 Platform Maximum number of logical switches per chassis Maximum number of logical switches Brocade DCX 8 Brocade DCX-4S 8 Brocade 5300 4 Brocade 5100 3 Following are restrictions on the default logical switch in the Brocade DCX and DCX-4S: • The default logical switch cannot use extended ISLs (XISLs). • The default logical switch cannot be a base switch. 208 Fabric OS Administrator's Guide 53-1001336-01
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