Brocade Multi-Service IronWare QoS and Traffic Management Configuration Guide (Supporting R05.6.00) - Manual (Page 110)

96 Multi-Service IronWare QoS and Traffic Management Configuration Guide
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Configuring QoS
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The all-zero-map option assigns an Ingress Decode EXP Policy Map where all EXP values are
mapped to priority 0 and drop precedence 0.
Binding an Ingress decode EXP policy map to a port
You can bind an Ingress Decode EXP Policy Map to a specified port on a Brocade device using the
qos exp decode-policy command as shown in the following.
Brocade(config)# interface ethernet 10/1
Brocade(config-if-e10000-10/1)qos exp decode-policy Customer1
Syntax: [no] qos exp decode-policy decode-map-name | default-map | all-zero-map
The decode-map-name variable is the name assigned to the Ingress Decode EXP Policy Map that
you want applied to the port whose configuration this is under:
The default-map option assigns the default Ingress Decode EXP Policy Map to the port whose
configuration this is under. Since the default Ingress Decode EXP Policy Map is the default setting,
this option is only required when the device’s global map has been set to an Ingress Decode EXP
Policy Map other than the default.
The all-zero-map option assigns an Ingress Decode EXP Policy Map where all EXP values are
mapped to priority 0 and drop precedence 0. This is useful if you do not want to process any EXP
information in the incoming packet.
Configuring a force priority
In situations where there are conflicting priority values for packets on an Ingress port, that conflict
can be resolved by performing a priority merge or by using a force command to direct the device to
use a particular value above other values. A force command can be configured for each of the
following:
• Force to the values configured on a port
• Force to the value configured for a VLAN
• Force to the value in the DSCP bits
• Force to the value in the EXP bits
• Force to the value in the PCP bits
• Force to a value specified within an ACL
Configuring a force priority for a port
You can configure an Ingress port with a priority to apply to packets that arrive on it using the
priority command.
To configure an Ingress port with a priority, use the priority command as shown in the following.
Brocade(config)# interface ethernet 10/1
Brocade(config-if-e10000-10/1)priority 6
Syntax: [no] priority priority-value
The priority-value variable is a value between 0 and 7. The default value is 0.
Once a port has been configured with a priority using the priority command, you can then configure
the port (using the priority force command) to force the configured priority when determining the
priority relative to other priority values of incoming packets.