Enabling Restrictions On Oversubscription Ratios; Configuring Bandwidth Fairness - Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual

Chapter 22 Configuring Generation 2 and Generation 3 Switching Modules
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

Enabling Restrictions on Oversubscription Ratios

You must enable restrictions on oversubscription ratios before you can downgrade modules to a previous
Caution
release.
Before enabling restrictions on oversubscription ratios, ensure that you have explicitly configured shared
ports to out-of-service mode. To enable restrictions on oversubscription ratios on multiple 48-port or
24-port 4-Gbps, or any 8-Gbps Fibre Channel switching modules using Device Manager, follow these
steps:
Step 1 Choose Physical > Modules.
You see the Module dialog box as shown in
Select enabled from the RateModeOversubscriptionLimit drop-down list for each module for which you
Step 2
want to enable restrictions on oversubscription ratios.
Click Apply to save the changes.
Step 3
To enable restrictions on oversubscription ratios on a single 48-port or 24-port 4-Gbps, or any 8-Gbps
Fibre Channel switching module using Device Manager, follow these steps:
Right-click a module and select Configure.
Step 1
You see the Module dialog box as shown in
Step 2 Click the enabled radio button to enable restrictions on oversubscription ratios.
Step 3 Click Apply to save the changes.

Configuring Bandwidth Fairness

This feature improves fairness of bandwidth allocation among all ports and provides better throughput
average to individual data streams. Bandwidth fairness can be configured per module.
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.
Caution When you disable or enable bandwidth fairness, the change does not take effect until you reload the
module.
Note This feature is supported only on the 48-port and 24-port 4-Gbps modules, the 8-Gbps modules, and the
18/4-port Multiservice Module (MSM).
OL-17256-03, Cisco MDS NX-OS Release 4.x
Configuring Module Interface Shared Resources
Figure 22-13.
Figure 22-14.
Cisco MDS 9000 Family Fabric Manager Configuration Guide
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