Brocade Fabric OS Administrators Guide (Supporting Fabric OS v7.3.0) - Manual (Page 538)

If two different backbone fabrics are connected to the same edge fabric, the backbone fabric IDs
must be different, but the edge fabric IDs must be the same. If you configure the same fabric ID for
two backbone fabrics that are connected to the same edge fabric, a RASLog message displays a
warning about fabric ID overlap.
You can optionally assign an alias name to the FID.
• MetaSAN
A metaSAN is the collection of all SANs interconnected with Fibre Channel routers.
A simple metaSAN can be constructed using an FC router to connect two or more separate fabrics.
Additional FC routers can be used to increase the available bandwidth between fabrics and to
provide redundancy.
Figure 84 shows a metaSAN consisting of a host in Edge SAN 1 connected to storage in Edge SAN
2 through a backbone fabric connecting two FC routers.
FIGURE 84 Edge SANs connected through a backbone fabric
• Phantom domains
Using FC-FC Routing to Connect Fabrics
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