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
23-40
Cisco MDS 9000 Family Command Reference
OL-18089-01, Cisco MDS NX-OS Release 4.x
Chapter 23 T Commands
tcp sack-enable
tcp sack-enable
To enable selective acknowledgment (SACK) to overcome the limitations of multiple lost packets during
a TCP transmission, use the
tcp sack-enable
command. Use the
no
form of this command to disable this
feature or revert to its factory defaults.
tcp sack-enable
no tcp sack-enable
Syntax Description
This command has no arguments or keywords.
Defaults
Enabled
Command Modes
FCIP profile configuration submode.
Command History
Usage Guidelines
The receiving TCP sends back SACK advertisements to the sender. The sender can then retransmit only
the missing data segments.
Examples
The following example configures a FCIP profile:
switch#
config terminal
switch(config)#
fcip profile 5
switch(config-profile)#
The following example enables the SACK mechanism on the switch:
switch(config-profile)#
tcp sack-enable
Related Commands
Release
Modification
1.1(1)
This command was introduced.
Command
Description
fcip profile
Configures FCIP profile parameters.
show fcip profile
Displays FCIP profile information.