Cisco Systems DSC9148D8G48PK9 manual Enabling Buffer-to-Buffer Credit Recovery

Chapter 4 Configuring Interface Buffers

Configuring Interface Buffers

Enabling Buffer-to-Buffer Credit Recovery

Buffer-to-buffer credit recovery on ISLs (E or TE ports) is enabled by default.

Detailed Steps

To use buffer-to-buffer credit recovery on a port, 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 fcbbscn	Enables buffer-to-buffer credit recovery on the
		interface.
	switch(config-if)#no switchport fcbbscn	Disables (default) buffer-to-buffer credit recovery
		on the interface.

Enabling the Buffer-to-Buffer State Change Number

Detailed Steps

To use the BB_SC_N field during PLOGI or FLOGI, 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 fcbbscn	Enables the use of buffer-to-buffer state change
		number for PLOGIs and FLOGIs on the interface.
	switch(config-if)#no switchport fcbbscn	Disables (default) the use of buffer-to-buffer state
		change number for PLOGIs and FLOGIs on the
		interface.

Configuring Receive Data Field Size

Detailed Steps

To configure the receive data field size, follow these steps:

	Command	Purpose
Step 1 switch# config t		Enters configuration mode.

	Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
4-24	OL-29284-01, Release 6.x