Enabling Virtual Output Queuing Limits For Unicast Traffic On The Cisco Nexus Device - Cisco Nexus 5000 NX-OS Service Configuration Manual

Enabling Virtual Output Queuing Limits for Unicast Traffic on the Cisco Nexus Device

Step 2
Step 3
This example shows how to restore the default buffer threshold on the Cisco Nexus 2148T Fabric Extender:
switch# configure terminal
switch(config)# fex 101
switch(config-fex)# hardware N2148T buffer-threshold 163840
This example shows how to remove the default buffer threshold on the Cisco Nexus 2148T Fabric Extender:
switch# configure terminal
switch(config)# fex 101
switch(config-fex)# no hardware N2148T buffer-threshold
Enabling Virtual Output Queuing Limits for Unicast Traffic on the Cisco Nexus
Device
You can enable the Virtual Output Queuing (VOQ) limit for unicast traffic. To alleviate congestion and
blocking, use VOQ to prevent one blocked receiver from affecting traffic that is sent to other noncongested
blocking receivers.
Procedure
Step 1
Step 2
Step 3
This example shows how to enable the VOQ limits for unicast packets on a switch:
switch(config)# hardware unicast voq-limit
switch(config)#
Cisco Nexus 5000 NX-OS Quality of Service Configuration Guide, Release 5.1(3)N2(1)
64
Command or Action
switch(config)# fex fex-id
switch(config-fex)# hardware
N2148T buffer-threshold buffer limit
Command or Action
switch# configure terminal
switch(config)# hardware unicast voq-limit
switch(config)# no hardware unicast
voq-limit
Configuring Queuing and Flow Control
Purpose
Specifies the Fabric Extender and enters the Fabric
Extender mode.
Configures the buffer threshold for the Cisco Nexus
2148T Fabric Extender. The buffer threshold is specified
in bytes. The range is from 81920 to 316160 for the
Cisco Nexus 2148T Fabric Extender.
Purpose
Enters configuration mode.
Enables the VOQ limit for unicast traffic. The
default is disabled.
Disables the VOQ limit for unicast traffic.
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