Extended Bb_Credits On Generation 2 And Generation 3 Switching Modules; Configuring Extended Bb_Credits - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Buffer Credits
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
The extended BB_credit configuration takes precedence over the receive BB_credit and performance
Note
buffer configurations.

Extended BB_credits on Generation 2 and Generation 3 Switching Modules

To use this feature on Generation 2 or Generation 3 switching modules, you must meet the following
requirements:
•
•
Extended BB_credits are not supported on the Cisco MDS 9124 Fabric Switch.
Note

Configuring Extended BB_credits

To configure extended BB_credits for a MDS-14/2 interface, for a Generation 2 switching module
interface (not including the Cisco MDS 9124 Fabric Switch), or for an interface in a Cisco MDS 9216i
switch, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Step 2
switch(config)# fcrxbbcredit extended enable
switch(config)# no fcrxbbcredit extended
enable
Step 3
switch(config)# interface fc1/1
switch(config-if)#
Cisco MDS 9000 Family CLI Configuration Guide
13-38
Obtain the Enterprise package (ENTERPRISE_PKG) license (see
Installing Licenses").
Configure this feature in any port on a Generation 2 switch module. See the
section on page 15-22 for more information on extended BB_credits on Generation 2 switching
modules.
Chapter 13
Chapter 3, "Obtaining and
Purpose
Enters configuration mode.
Enables the extended BB_credits feature.
Disables (default) the extended BB_credits
feature.
Selects a Fibre Channel interface and enters
interface configuration submode.
OL-18084-01, Cisco MDS NX-OS Release 4.x
Configuring Interfaces
"Extended BB_Credits"