Cisco MDS 9000 Series Command Reference

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23-32
Cisco MDS 9000 Family Command Reference
OL-8413-07, Cisco MDS SAN-OS Release 3.x
Chapter 23 T Commands
tcp pmtu-enable
tcp pmtu-enable
To configure path MTU (PMTU) discovery, use the tcp pmtu-enable command. Use the no form of this
command to disable this feature or revert to its factory defaults.
tcp pmtu-enable [reset-timeout seconds]
no tcp pmtu-enable [reset-timeout
seconds]
Syntax Description
Defaults Enabled.
3600 seconds.
Command Modes FCIP profile configuration submode.
Command History
Usage Guidelines None.
Examples The following example configures a FCIP profile:
switch# config terminal
switch(config)# fcip profile 5
switch(config-profile)#
The following example disables PMTU discovery:
switch(config-profile)# no tcp pmtu-enable
The following example enables PMTU discovery with a default of 3600 seconds:
switch(config-profile)# tcp pmtu-enable
The following example specifies the PMTU reset timeout to 90 seconds:
switch(config-profile)# tcp pmtu-enable reset-timeout 90
The following example leaves the PMTU in an enabled state but changes the timeout to the default of
3600 seconds:
switch(config-profile)# no tcp pmtu-enable reset-timeout 600
reset-timeout seconds Specifies the PMTU reset timeout. The range is 60 to 3600 seconds.
Release Modification
1.1(1) This command was introduced.

Cisco MDS 9000 Series Specifications

General

Category	Switch
Operating System	Cisco NX-OS
Ports	Varies by model
Protocols	Fibre Channel (FC), Fibre Channel over IP (FCIP), iSCSI
Redundancy	Redundant supervisors, power supplies, and fans
Management	Cisco Data Center Network Manager (DCNM), CLI, SNMP
Virtualization Support	VSANs (Virtual SANs)
Security Features	Fibre Channel Security Protocol (FC-SP)
Hot Swappable Components	power supplies, fans
Power Supply Options	AC and DC options available