Cisco DS-C9216I-K9, Руководство по настройке

Страница: 306 / 436

24-18
Cisco MDS 9000 Fabric Manager Switch Configuration Guide
OL-7753-01
Chapter 24 Configuring IP Storage
Configuring FCIP
Figure 24-11 FCIP B Port and Fibre Channel E Port
B ports bridge Fibre Channel traffic from one E port to a remote E port without participating in
fabric-related activities such as principal switch election, Domain ID assignment, and Fibre Channel
routing (FSPF). For example, Class F traffic entering a SAN extender does not interact with the B port.
The traffic is transparently propagated (bridged) over a WAN interface before exiting the remote B port.
This bridge results in both E ports exchanging Class F information which ultimately leads to normal ISL
behavior such as fabric merging and routing.
FCIP links between B port SAN extenders do not exchange the same information as FCIP links between
E ports, and are therefore incompatible. This is reflected by the terminology used in FC-BB-2: while VE
ports establish a virtual ISL over a FCIP link, B ports use a B access ISL.
FC
FC
FC
F
F
F
Switch A
GE
FC
FC
VE
F
E
Switch C
FC
GE
FC
E
VE
F
Switch B
FCIP link
Virtual ISL
IP
91559
IP
FC
FC
FC
F
F
FC
FC
B
B
B
access
B
access
E
Switch A
FC bridge
FC
FC
FC
E
F
E
Switch C
FC bridge
FC
FC
FC
E
E
F
Switch B
B access ISL
FCIP link
ISL
ISL
E port
B port