Configuring B Ports - Cisco DS-X9530-SF1-K9 - Supervisor-1 Module - Control Processor Configuration Manual

Chapter 33 Configuring FCIP
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m .
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 an FCIP link, B ports use a B access ISL.
The IPS module and MPS-14/2 module support FCIP links that originate from a B port SAN extender
device by implementing the B access ISL protocol on a Gigabit Ethernet interface. Internally, the
corresponding virtual B port connects to a virtual E port that completes the end-to-end E port
connectivity requirement (see
Figure 33-7 FCIP Link Terminating in a B Port Mode
FC
The B port feature in the IPS module and MPS-14/2 module allows remote B port SAN extenders to
communicate directly with a Cisco MDS 9000 Family switch, therefore eliminating the need for local
bridge devices.

Configuring B Ports

When an FCIP peer is a SAN extender device that only supports Fibre Channel B ports, you need to
enable the B port mode for the FCIP link. When a B port is enabled, the E port functionality is also
enabled and they coexist. If the B port is disabled, the E port functionality remains enabled.
To enable B port mode, follow these steps:
Command
Step 1
switch(config-if)# bport
switch(config-if)# no bport
OL-6973-03, Cisco MDS SAN-OS Release 2.x
Figure
Switch A
FC
F
F
E
FC
Switch B
FC bridge
B
VE B
access
FC E
E
FC
FCIP interface
33-7).
IP
FCIP link
GE
B access ISL
Purpose
Enables B port mode on the FCIP interface.
Reverts to E port mode on the FCIP interface (default).
Cisco MDS 9000 Family Configuration Guide
Advanced FCIP Interface Configuration
7200 router
Fibre Channel
port adapter (1G)
B
B FC
access
Switch C
FC
E
E
FC
ISL
FC
F
33-17