Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual page 485

Configuring System Classes
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OL-16597-01
Command or Action
switch(config-pmap-nq)# class
type network-qos class-name
switch(config-pmap-c-nq)# mtu
mtu-value
switch(config-pmap-c-nq)# no
mtu
switch(config-pmap-c-nq)#
multicast-optimize
switch(config-pmap-c-nq)# no
multicast-optimize
switch(config-pmap-c)# pause
no-drop [pfc-cos pfc-cos-value]
switch(config-pmap-c-nq)# no
pause no-drop
switch(config-pmap-c-nq)#
queue-limit number-bytes bytes
switch(config-pmap-c-nq)# no
queue-limit number-bytes bytes
switch(config-pmap-c-nq)# set cos
cos-value
Purpose
Associates a class map with the policy map, and enters
configuration mode for the specified system class.
The associated class map must be the same type as
Note
the policy map type.
Specifies the MTU value in bytes.
The mtu-value that you configure must be less than
Note
the value set by the system jumbomtu command.
(Optional)
Resets the MTU value in this class.
Enables multicast optimization. Multicast traffic in this class
will be served by all available multicast queues.
Only one class in a policy map can be configured
Note
for multicast optimization.
(Optional)
Disables multicast optimization.
Configures a no-drop class. If you do not specify this
command, the default policy is drop.
The operation for the drop policy is a simple tail
Note
drop, where arriving packets will be dropped if the
queue increases to its allocated size.
The pfc-cos-value range is from 0 to 7. This option is
supported only for for a ACL-based system class (which
filters traffic using criteria other than cos-based matches).
The list of CoS values can potentially include the
Caution
CoS value that is used for FCoE traffic in
class-fcoe. You must determine if this is desired
behavior for your topology.
(Optional)
Removes the no-drop option from this class.
Specifies the tail drop threshold on this interface. The
threshold range is from 20480 to 204800 bytes.
Note The queue limit can only be configured on drop
classes. If you try to configure a queue limit on a
no-drop class, or try to configure no-drop on a class
where a queue limit is already defined, the CLI will
return an error.
(Optional)
Disables the queue limit specification in this class.
Specifies a 802.1Q CoS value which is used to mark packets
on this interface. The value range is from 0 to 7.
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
Configuring Type Network QoS Policies
439