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Riverstone Networks RS Switch Router User Guide Release 8.0 26-5
QoS Configuration Traffic Prioritization for Layer-2 Flows
For example, the following command creates the priority map all-low which maps all 802.1p priorities to the low
internal priority queue:
Once a priority map is created, it can then be applied to a set of ports, as shown in the following example:
In the above example, ports et.1.1-4 and ports gi.4.* will use the all-low priority map. All other ports, including ports
et.1.5-8, will use the default priority map.
You do not need to specify mappings for all 802.1p values. If you do not specify a particular mapping, the default
mapping for that 802.1p priority is used. The following example creates a priority map no-ctrl with the same mappings
as the default priority map, except that the 802.1p priority of 7 is mapped to the internal priority high instead of control.
Removing or Disabling Per-Port Priority Map
Negating a
qos
create
priority-map
command removes the priority map. Before you can remove a priority map,
you must negate all commands that use the priority map. Negating a
qos
apply
priority-map
command causes the
configured ports to use the default priority mapping.
The ability to specify per-port priority maps is enabled on the RS by default. You can disable use of per-port priority
maps on the RS. All ports on the RS will then be configured to use the default priority map only. If the commands to
create and apply priority maps exist in the active configuration, they will remain in the configuration but be ineffective.
To disable the use of priority maps, enter the following command in the Configure mode:
If the above command is negated, ports on the RS can use per-port priority maps. If the commands to create and apply
priority maps exist in the active configuration, they are reapplied.
Displaying Priority Map Information
To display priority maps and the ports on which they are applied, enter the following command in Enable mode:
qos create priority-map all-low 0 low 1 low 2 low 3 low 4 low 5 low 6 low 7 low
qos apply priority-map all-low ports et.1.1-4, gi.4.*
qos create priority-map no-ctrl 7 high
Disable use of per-port priority maps on the RS.
qos priority-map off
Display priority mapping.
qos show priority-map
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