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
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Cisco MDS 9000 Family CLI Configuration Guide
OL-16184-01, Cisco MDS SAN-OS Release 3.x
Chapter 14 Configuring Generation 2 Switches and Modules
Configuring Generation 2 Module Interface Shared Resources
To configure the rate mode (dedicated or shared) on an interface on a 48-port or 24-port 4-Gbps Fibre
Channel switching module, follow these steps:
Caution
Changing port speed and rate mode disrupts traffic on the port.
Use
show port-resources module
command to verify the rate mode configuration for interfaces on a
48-port or 24-port 4-Gbps Fibre Channel switching module.
switch#
show port-resources module 9
Module 9
Available dedicated buffers are 5400
Port-Group 1
Total bandwidth is 12.8 Gbps
Total shared bandwidth is 12.8 Gbps
Allocated dedicated bandwidth is 0.0 Gbps
--------------------------------------------------------------------
Interfaces in the Port-Group B2B Credit Bandwidth Rate Mode
Buffers (Gbps)
--------------------------------------------------------------------
fc9/1 16 4.0 shared
fc9/2 16 4.0 shared
fc9/3 16 4.0 shared
fc9/4 16 4.0 shared
fc9/5 16 4.0 shared
fc9/6 16 4.0 shared
Port-Group 2
Total bandwidth is 12.8 Gbps
Total shared bandwidth is 12.8 Gbps
Allocated dedicated bandwidth is 0.0 Gbps
--------------------------------------------------------------------
Interfaces in the Port-Group B2B Credit Bandwidth Rate Mode
Buffers (Gbps)
--------------------------------------------------------------------
fc9/7 16 4.0 shared
fc9/8 16 4.0 shared
Command
Purpose
Step 1
switch#
config t
switch(config)#
Enters configuration mode.
Step 2
switch(config)#
interface fc 1/1
switch(config-if)#
Selects the interface and enters interface
configuration submode.
Step 3
switch(config-if)#
switchport rate-mode
dedicated
Reserves dedicated bandwidth for the
interface.
Note
If you cannot reserve dedicated
bandwidth on an interface, you might
have exceeded the port group
maximum bandwidth. Use the
show
port-resources
command to
determine what resources are already
allocated.
switch(config-if)#
switchport rate-mode shared
Reserves shared (default) bandwidth for the
interface.
switch(config-if)#
no switchport rate-mode
Reverts to the default state (
shared
).