Dell Brocade G620 Brocade 8.0.1 Fabric OS Administratiors Guide - Page 540

Logical switch configuration for FC routing, edge fabrics, Fabric 128 and Fabric 15.

Page 540 highlights

Using FC-FC Routing to Connect Fabrics ∙ All FC router commands can be executed only in the base switch context. ∙ The fcrConfigure command is not allowed when Virtual Fabrics is enabled. Instead, use the lsCfg command to configure the FID. ∙ Although the Brocade 6510 and 6520 support up to four logical switches, if you are using FC-FC routing, they can have a maximum of only three logical switches. ∙ In the Brocade 7840, FC-FC routing is not supported on the base switch. ∙ When a VF enabled switch is part of backbone, only the base switch will be able to route frames between edge fabrics. If any other (default or logical) switch is included as a hop between edge fabrics, packets will be dropped. Logical switch configuration for FC routing Figure 86 shows an example of two chassis partitioned into logical switches. This configuration allows the device in Fabric 128 to communicate with the device in Fabric 15 without merging the fabrics. The following conditions are considered: ∙ The base switch in Physical chassis 1 serves as an FC router and contains EX_Ports that connect to logical switches in the two edge fabrics, Fabric 128 and Fabric 15. ∙ The other logical switches in Fabric 128 and Fabric 15 must be connected with physical ISLs, and do not use the XISL connection in the base fabric. ∙ The logical switches in Fabric 1 are configured to allow XISL use. You cannot connect an EX_Port to these logical switches, so the device in Fabric 1 cannot communicate with the other two devices. FIGURE 86 EX_Ports in a base switch 540 Brocade Fabric OS Administration Guide, 8.0.1 53-1004111-02

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All FC router commands can be executed only in the base switch context.
The
fcrConfigure
command is not allowed when Virtual Fabrics is enabled. Instead, use the
lsCfg
command to configure the
FID.
Although the Brocade 6510 and 6520 support up to four logical switches, if you are using FC-FC routing, they can have a
maximum of only three logical switches.
In the Brocade 7840, FC-FC routing is not supported on the base switch.
When a VF enabled switch is part of backbone, only the base switch will be able to route frames between edge fabrics. If any
other (default or logical) switch is included as a hop between edge fabrics, packets will be dropped.
Logical switch configuration for FC routing
Figure 86
shows an example of two chassis partitioned into logical switches. This configuration allows the device in Fabric 128 to
communicate with the device in Fabric 15 without merging the fabrics.
The following conditions are considered:
The base switch in Physical chassis 1 serves as an FC router and contains EX_Ports that connect to logical switches in the two
edge fabrics, Fabric 128 and Fabric 15.
The other logical switches in Fabric 128 and Fabric 15 must be connected with physical ISLs, and do not use the XISL
connection in the base fabric.
The logical switches in Fabric 1 are configured to allow XISL use. You cannot connect an EX_Port to these logical switches, so
the device in Fabric 1 cannot communicate with the other two devices.
FIGURE 86
EX_Ports in a base switch
Using FC-FC Routing to Connect Fabrics
Brocade Fabric OS Administration Guide, 8.0.1
540
53-1004111-02