
Chapter 3. IBM TotalStorage b-type family routing solutions 43
3.2 FCIP tunneling
In situations where dark fiber for DWDM is not available or the distances are
longer than supported by DWDM, the SAN fabrics can be connected using the
FCIP tunneling functionality. Figure 3-3 shows this solution.
Figure 3-3 FCIP tunneling
We recommend that you combine FCIP tunneling with the FC-FC routing feature.
This way, you can isolate any SAN fabric failure in one site to that site only and
prevent the other site from being affected. Any link failures on the FCIP links are
also isolated from both edge fabrics.
3.3 iSCSI gateway
The iSCSI gateway feature of the ...