Dell PowerConnect Brocade 300 Fabric OS Administrator's Guide v7.1.0 - Page 576
FC-FC routing topologies, Target, Fabric 1, FC router, Proxy host, imported device, Proxy target
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24 Fibre Channel routing concepts Host Proxy host (imported device) Proxy target (imported device) Fabric 1 EX_Port Target E_Port IFL Fabric 2 E_Port IFL FC router FIGURE 77 MetaSAN with imported devices FC-FC routing topologies The FC-FC routing service provides two types of routing: • Edge-to-edge Occurs when devices in one edge fabric communicate with devices in another edge fabric through one or more FC routers. • Backbone-to-edge Occurs when FC routers connect to a common fabric-known as a backbone fabric-through E_Ports. A backbone fabric can be used as a transport fabric that interconnects edge fabrics. FC routers also enable hosts and targets in edge fabrics to communicate with devices in the backbone fabric, known as backbone-to-edge routing. From the perspective of the edge fabric, the backbone fabric is like any other edge fabric. For the edge fabric and backbone fabric devices to communicate, the shared devices must be presented to each other's native fabric. To do so, at least one translate phantom domain is created in the backbone fabric. This translate phantom domain represents the entire edge fabric. The shared physical devices in the edge have corresponding proxy devices on the translate phantom domain. Each edge fabric has one and only one translate phantom domain to the backbone fabric. The backbone fabric device communicates with the proxy devices whenever it needs to contact the shared physical devices in the edge. The FC-FC routing service receives the frames from the backbone switches destined to the proxy devices, and redirects the frames to the actual physical devices. When connected to edge fabrics, the translate phantom domain can never be the principal switch of the backbone fabric. Front domains are not created; rather, only translate phantom domains are created in the backbone fabric. Devices are exported from the backbone fabric to one or more edge fabrics using LSANs. Refer to "LSAN zone configuration" on page 590 for more information. 576 Fabric OS Administrator's Guide 53-1002745-02
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