Fcip Compression - 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 .
To enable tape acceleration, follow these steps:
Command
Step 1
switch1# config terminal
switch(config)#
Step 2
switch1(config)# interface fcip 5
switch1(config-if)#
Step 3
switch1(config-if)# write-accelerator
tape-accelerator
switch1(config-if)# write-accelerator
tape-accelerator flow-control-buffer-size
auto
switch1(config-if)# write-accelerator
tape-accelerator flow-control-buffer-size
2048
switch1(config-if)# no write-accelerator
tape-accelerator
switch1(config-if)# no write-accelerator
tape-accelerator flow-control-buffer-size
2048
switch1(config-if)# no write-accelerator

FCIP Compression

The FCIP compression feature allows IP packets to be compressed on the FCIP link if this feature is
enabled on that link. By default the FCIP compression is disabled. When enabled, the software defaults
to using the auto mode (if a mode is not specified).
You can configure FCIP compression using one of the following modes:
•
•
•
•
The IP compression feature behavior differs between the IPS module(s) or MPS-14/2 module(s) and
MPS-14/2 module—while mode2 and mode3 perform software compression in both modules, mode1
performs hardware-based compression in MPS-14/2 modules, and software compression in IPS-4 and
IPS-8 modules.
The Cisco MDS 9216i Switch also supports IP compression feature. The integrated supervisor module
Note
has the same hardware components that are available in the MPS-14/2 module.
OL-6973-03, Cisco MDS SAN-OS Release 2.x
mode1 is a fast compression mode for high bandwidth links (> 25 Mbps)
mode2 is a moderate compression mode for moderately low bandwidth links (between 10 and 25
Mbps)
mode3 is a high compression mode for low bandwidth links (< 10 Mbps)
auto (default) mode picks the appropriate compression scheme based on the bandwidth of the link
(the bandwidth of the link configured in the FCIP profile's TCP parameters)
Purpose
Enters configuration mode.
Creates an FCIP interface (5).
Enables tape acceleration (and write acceleration—if
not already enabled).
Enables tape acceleration with automatic flow
control (default)
Sets tape acceleration flow control buffer size to 2
MB.
Disables tape acceleration (default) and resets the
FCIP tunnel.
The write-acceleration feature remains
Note
enabled.
Changes the flow control buffer size to the default
value of automatic. The tape acceleration and write
acceleration features remain enabled. This command
does not reset the FCIP tunnel.
Disables both the write acceleration and
tape-acceleration features and resets the FCIP tunnel.
Cisco MDS 9000 Family Configuration Guide
Advanced FCIP Features
33-23