Cisco MDS 9000 series Configuration Manual page 50

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
Figure 2-13
RTT1
RT2
RTT1
FCIP write acceleration can be enabled for multiple FCIP tunnels if the tunnels are part of a dynamic
Tip
PortChannel configured with channel mode active. 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.
Do not enable time stamp control on an FCIP interface with write acceleration configured.
Tip
Write acceleration cannot be used across FSPF equal cost paths in FCIP deployments. Native Fibre
Note
Channel write acceleration can be used with Port Channels. Also, FCIP write acceleration can be used
in Port Channels configured with channel mode active or constructed with Port Channel Protocol (PCP).
Cisco MDS 9000 Family NX-OS IP Services Configuration Guide
2-26
FCIP Link Write Acceleration
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 2 Configuring FCIP
Target
FC FC
Without
acceleration
Target
FC FC
Transfer ready
With
acceleration
OL-19525-01,Cisco MDS NX-OS Release 4.2(1)