10 Chapter 10. Cisco routing real-life solutions The case studies in this chapter are intended to show real-life situations. They also show the pragmatic solutions that have been developed around them using the Cisco MDS multiprotocol technology. We present two case studies here. The first one implements inter-virtual storage area network (VSAN) routing (IVR), Fibre Channel (FC) over IP (FCIP) tunneling over a campus IP backbone, and Small Computer System Interface over IP (iSCSI). The second one implements IVR and asynchronous disk mirroring through FCIP tunneling over a long-distance IP network. Important: The solutions and sizing estimates that we discuss or make in this chapter are unique. Make no assumptions that they will be supported or apply to each environment. We recommend that you engage IBM to discuss any proposal. © Copyright IBM Corp. 2006. All rights reserved. 283