256 SAN Multiprotocol Routing: An Introduction and Implementation
8.1 SAN extension with FCIP
Fibre Channel (FC) distances have traditionally been limited to either local fiber
runs using 9 micron longwave Fibre Channel, or high quality wide area networks
(WANs), such as SONET and SDH, in combination with coarse wavelength
division multiplexing (CWDM) or dense wavelength division multiplexing (DWDM)
multiplexers.
The advent of Fibre Channel over IP (FCIP) has meant that applications that can
tolerate the higher latencies of IP networks can now make Fibre Channel
connections across standard corporate IP WANs. The advantages of this are that
it uses a widely available and well-understood infrastructure. This translates into
lower cost.
We are ...