Cisco Nexus 5000 Series Switch CLI Software Configuration Guide, NX-OS 4.0(1a)N1 (OL-16597-01, January 2009)

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Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
OL-16597-01
Chapter 32 Configuring Fibre Channel Interfaces
Configuring Fibre Channel Interfaces
The receive BB_credit value (fcrxbbcredit) may be configured for each Fibre Channel interface. In most
cases, you do not need to modify the default configuration.
Note The receive BB_credit values depend on the port mode. For physical Fibre Channel interfaces, the
default value is 16 for F mode and E mode interfaces. This value can be changed as required. The
maximum value is 64.
Note For virtual Fibre Channel interfaces, BB_credits are not used.
Configuring Fibre Channel Interfaces
This section describes how to configure Fibre Channel interfaces, and includes the following topics:
• Configuring a Fibre Channel Interface, page 32-8
• Setting the Interface Administrative State, page 32-9
• Configuring Interface Modes, page 32-9
• Configuring the Interface Description, page 32-10
• Configuring Port Speeds, page 32-10
• Configuring SD Port Frame Encapsulation, page 32-11
• Configuring Receive Data Field Size, page 32-11
• Understanding Bit Error Thresholds, page 32-11
• Configuring Buffer-to-Buffer Credits, page 32-12
Configuring a Fibre Channel Interface
To configure a Fibre Channel interface, perform this task:
Command Purpose
Step 1
switch# configuration terminal
Enters configuration mode.
Step 2
switch(config)# interface {fc
slot/port}|{vfc vfc-id}
switch(config-if)#
Selects a Fibre Channel interface and enters interface
configuration mode.
Note When a Fibre Channel interface is configured, it
is automatically assigned a unique world wide
name (WWN). If the interface’s operational state
is up, it is also assigned a Fibre Channel ID (FC
ID).