Disabling Restrictions On Oversubscription Ratios - HP Cisco MDS 9216 - Fabric Switch Configuration Manual

Configuring Generation 2 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
When restrictions on oversubscription ratios are disabled, the bandwidth allocation among the shared
Note
ports is proportionate to the configured speed. (If the configured speed is auto, then bandwidth is
allocated assuming a speed of 4 Gbps.) For example, if you have three shared ports configured at 1, 2,
and 4 Gbps, then the allocated bandwidth ratio is 1:2:4. In Cisco SAN-OS Release 3.0 and later (or when
restrictions on oversubscription ratios are enabled), port bandwidths are allocated in equal proportions,
regardless of port speed, so, the bandwidth allocation for the same three ports mentioned in the example
would be 1:1:1.

Disabling Restrictions on Oversubscription Ratios

Before disabling restrictions on oversubscription ratios, ensure that you have explicitly shut down shared
ports. To disable restrictions on oversubscription ratios on multiple 48-port or 24-port 4-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
Figure 22-8
Caution
Step 2 Select disabled from the RateModeOversubscriptionLimit drop-down list for each module for which
you want to disable restrictions on oversubscription ratios.
Step 3 Click Apply to save the changes.
To disable restrictions on oversubscription ratios on a single 48-port or 24-port 4-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
Cisco MDS 9000 Family CLI Configuration Guide
22-24
Module Dialog Box
This feature is only supported on 48-port and 24-port 4-Gbps Fibre Channel switching
modules.
Chapter 22 Configuring Generation 2 Switches and Modules
Figure 22-8.
Figure 22-9.
OL-16184-01, Cisco MDS SAN-OS Release 3.x