Enabling Bandwidth Fairness; Disabling Bandwidth Fairness - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Configuring Module Interface Shared Resources
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
As of Cisco SAN-OS Release 3.1(2), all 48-port and 24-port 4-Gbps Fibre Channel switching modules,
as well as 18-port Fibre Channel/4-port Gigabit Ethernet Multiservice modules, have bandwidth fairness
enabled by default. As of Cisco NX-OS Release 4.1(1), all the 8-Gbps Fibre Channel switching modules
have bandwidth fairness enabled by default.
When you disable or enable bandwidth fairness, the change does not take effect until you reload the
Caution
module.
Use the show module bandwidth-fairness command to check whether ports in a module are operating
with bandwidth fairness enabled or disabled.
switch# show module 2 bandwidth-fairness
Module 2 bandwidth-fairness is enabled
This feature is supported only on the 48-port and 24-port 4-Gbps modules, the 8-Gbps modules, and the
Note
18/4-port Multiservice Module (MSM).

Enabling Bandwidth Fairness

To enable bandwidth fairness on a switching module, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Step 2
switch(config)# rate-mode
bandwidth-fairness module 1
Step 3
switch(config)# exit

Disabling Bandwidth Fairness

If you disable bandwidth fairness, up to a 20 percent increase in internal bandwidth allocation is possible
Note
for each port group; however, bandwidth fairness is not guaranteed when there is a mix of shared and
full-rate ports in the same port group.
To disable bandwidth fairness on a switching module, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Cisco MDS 9000 Family CLI Configuration Guide
15-46
Chapter 15 Configuring Generation 2 and Generation 3 Switching Modules
Purpose
Enters configuration mode.
Enables bandwidth fairness for a module.
You must enter this command separately for
Note
each module for which you want to enable
bandwidth fairness. You must reload the
module for the command to take effect.
Exits configuration mode.
Purpose
Enters configuration mode.
OL-18084-01, Cisco MDS NX-OS Release 4.x