Cisco DS-X9530-SF1-K9 - Supervisor-1 Module - Control Processor Configuration Manual page 746

Advanced FCIP Features
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 .
Figure 33-8 FCIP Link Write Acceleration
RTT1
RT2
RTT1
FCIP write acceleration can be enabled for multiple FCIP tunnels if the tunnels are part of a PortChannel
Tip
configured with channel active mode. FCIP write acceleration does not work if multiple
non-PortChannel ISLs exist with equal weight between the initiator and the target port. Such a
configuration might cause either SCSI discovery failure or failed WRITE or READ operations.
Tip Do not enable time stamp control on an FCIP interface write acceleration configured.
When write acceleration is enabled in an FCIP interface, a FICON VSAN cannot be enabled in that
Caution
interface. Likewise, if an FCIP interface is up in a FICON VSAN, write acceleration cannot be enabled
on that interface.
Cisco MDS 9000 Family Configuration Guide
33-20
Initiator MDS 9000
Initiator MDS 9000
Transfer ready
MDS 9000
FCIP over
WAN
Command
Transfer ready
Data transfer
Status
MDS 9000
FCIP over
WAN
Command
Data transfer
Status
Chapter 33 Configuring FCIP
Target
FC FC
Without
acceleration
Target
FC FC
Transfer ready
With
acceleration
OL-6973-03, Cisco MDS SAN-OS Release 2.x