C H A P T E R 56 Configuring Fabric Congestion Control And Qos; Assigning Fcc Priority; Displaying Fcc Settings - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual
Cisco mds 9000 family cli configuration guide - release 4.x (ol-18084-01, february 2009)
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Chapter 56
Configuring Fabric Congestion Control and QoS
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
To enable or disable the FCC feature, follow these steps:
Command
Step 1
switch# config t
Step 2
switch(config)# fcc enable
switch(config)# no fcc enable
Assigning FCC Priority
To assign FCC priority, follow these steps:
Command
Step 1
switch# config t
Step 2
switch(config)# fcc priority 2
Displaying FCC Settings
Use the show fcc command to view FCC settings (see
Example 56-1 Displays Configured FCC Information
switch# show fcc
fcc is disabled
fcc is applied to frames with priority up to 4
QoS
QoS implementation in the Cisco MDS 9000 Family follows the differentiated services (DiffServ)
model. The DiffServ standard is defined in RFCs 2474 and 2475.
All switches support the following types of traffic:
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OL-18084-01, Cisco MDS NX-OS Release 4.x
About Control Traffic, page 56-4
Enabling or Disabling Control Traffic, page 56-4
Displaying Control Traffic Information, page 56-4
About Data Traffic, page 56-5
VSAN Versus Zone-Based QoS, page 56-6
Configuring Data Traffic, page 56-6
QoS Initiation for Data Traffic, page 56-7
About Class Map Creation, page 56-7
Creating a Class Map, page 56-7
About Service Policy Definition, page 56-8
Specifying Service Policies, page 56-9
Purpose
Enters configuration mode.
Enables FCC in this switch.
Disables FCC in this switch (default).
Purpose
Enters configuration mode.
Defines the FCC priority threshold to have a priority of 2—0
is the lowest priority and 7 is the highest priority.
Example
Cisco MDS 9000 Family CLI Configuration Guide
56-1).
QoS
56-3
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