Cisco Systems DSC9148D8G48PK9 manual Configuring Port Speed

Chapter 3 Configuring Fibre Channel Interfaces

Configuring Fibre Channel Interfaces

See the “Configuring Buffer-to-Buffer Credits” section on page 4-21, and the “Configuring Extended BB_credits” section on page 4-23.

Configuring Port Speed

Restrictions

•Changing port speed and rate mode disrupts traffic on the port. Traffic on other ports in the port group is not affected.

Detailed Steps

To configure the port speed on an interface on a 4-Gbps or 8-Gbps switching module, follow these steps:

	Command	Purpose
Step 1
	switch# config t	Enters configuration mode.
	switch(config)#
Step 2
	switch(config)# interface fc 1/1	Selects the interface and enters interface
	switch(config-if)#	configuration submode.
Step 3
	switch(config-if)#switchport speed 4000	Configures the port speed in megabits per
		second. Valid values are 1000, 2000, 4000 and
		auto. The auto parameter enables autosensing on
		the interface.
	switch(config-if)#switchport speed 8000	(8-Gbps modules only1) Configures the port
		speed in megabits per second to 8-Gbps. Valid
		values are 1000, 2000, 4000, 8000 and auto. The
		auto parameter enables autosensing on the
		interface.
	switch(config-if)#switchport speed auto	On 4-Gbps modules, configures autosensing for
		the interface with 4 Gbps of bandwidth
		reserved.
		On 8-Gbps modules, configures autosensing for
		the interface with 8 Gbps of bandwidth
		reserved. 2
	switch(config-if)#switchport speed auto max	Configures autosensing with a maximum of
	2000	2 Gbps of bandwidth reserved.
	switch(config-if)#switchport speed auto max	(8-Gbps modules only1) Configures autosensing
	4000	with a maximum of 4Gbps of bandwidth
		reserved.
	switch(config-if)# no switchport speed	Reverts to the default2 speed for the interface
		(auto).

1.The 8000 and auto max 4000 speed configurations are available only for the 8-Gbps modules.

2.The default speed on 48-port and 24-port 4-Gbps modules is 4000. The default speed on 48-port and 24-port 8-Gbps modules is 8000. The default speed on the 4/44-port 8-Gbps module is auto max 4000.

	Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
OL-29284-01, Release 6.x		3-29