Dell Brocade G620 Brocade 8.0.1 Fabric OS Administratiors Guide - Page 283
Limitations and restrictions of Virtual Fabrics, Virtual Fabrics interaction with Fabric OS features
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Managing Virtual Fabrics TABLE 60 Virtual Fabrics interaction with Fabric OS features Fabric OS feature Access Gateway Configuration upload and download Encryption FC-FC Routing Service FICON ISL R_RDY mode Licensing Network time protocol (NTP) QoS Traffic Isolation Virtual Fabrics interaction Virtual Fabrics is not supported on a switch if AG mode is enabled. Virtual Fabrics uses a configuration file that is different from the configuration file used to download system configuration parameters. Refer to Maintaining the Switch Configuration File on page 257 for more information about how Virtual Fabrics affects the configuration file. Encryption functionality using the FS8-18 blade is available only on the default logical switch. 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. Refer to Using FC-FC Routing to Connect Fabrics on page 489 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 can use both ISLs and XISLs. ISL R_RDY mode is not supported in a base switch. Licenses are applicable for all logical switches in a chassis. The clock information for a chassis is maintained by the default logical switch and not from the principal or primary FCS switch. Refer to Network Time Protocol on page 59 for more information about how Virtual Fabrics affects NTP. QoS VCs are maintained across the base fabric. Refer to Optimizing Fabric Behavior on page 387 for more information about using the Adaptive Networking features with Virtual Fabrics. Traffic Isolation with Failover-Disabled (TI FD) zoning is not supported over LISLs; Traffic Isolation zones with Failover-Enabled (TI FE) is supported. TI FD zoning is supported over DISLs (physical links). TI FD zoning is not supported in the base fabric. Refer to Optimizing Fabric Behavior on page 387 for additional information about using TI Zones with Virtual Fabrics. Limitations and restrictions of Virtual Fabrics Before you use the Virtual Fabrics feature, you should be aware of the restrictions and limitations regarding QSFP ports and the maximum number of logical switches per chassis. In the core blades, all four ports belonging to a QSFP must be moved to the same logical switch. The maximum number of logical switches per chassis varies depending on the switch model. The following table lists the supported platforms and the maximum number of logical switches (including the default logical switch) supported on each. TABLE 61 Maximum number of logical switches per chassis Platform Brocade X6 Directors Brocade DCX 8510 Backbones Brocade 6510 Brocade 6520 Brocade G620 Brocade 7840 Maximum number of logical switches 8 8 4 4 4 4 Brocade Fabric OS Administration Guide, 8.0.1 53-1004111-02 283
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