QoS Configuration¶

This section covers Quality of Service (QoS) configuration in FloofOS for traffic prioritization and policing.

Overview¶

FloofOS QoS provides:

Marking — Set DSCP/CoS values on packets
Recording — Read and store QoS values from packets
Policing — Rate limiting with token bucket algorithm
Scheduling — Priority queuing (future)

QoS Maps¶

QoS maps define how to translate between different QoS encodings (DSCP, MPLS EXP, VLAN CoS).

Show QoS Maps¶

show qos egress map
show qos mark source

QoS Marking¶

Record QoS from Packets¶

Record incoming QoS values for use in marking:

qos record interface GE12/0/0 input source ip
commit

Mark Packets¶

Apply QoS marking based on recorded values:

qos mark interface GE12/0/0 output source ip
commit

View QoS Interface Configuration¶

show qos record interface
show qos mark interface
show qos store interface

Policer Configuration¶

Policers implement token bucket rate limiting.

Create Policer¶

Syntax¶

configure policer name <name> cir <rate> cb <burst> [eir <rate>] [eb <burst>] [rate-type <kbps|pps>] [round <closest|up|down>] [type <1r2c|1r3c|2r3c-2698|2r3c-4115|2r3c-mef5cf1>] [conform-action <action>] [exceed-action <action>] [violate-action <action>] [color-aware]

Parameters¶

Parameter	Description
`cir`	Committed Information Rate
`cb`	Committed Burst Size
`eir`	Excess Information Rate
`eb`	Excess Burst Size
`rate-type`	Rate unit (kbps or pps)
`type`	Policer algorithm

Actions¶

Action	Description
`drop`	Drop packets
`transmit`	Forward packets
`mark-and-transmit`	Mark and forward

Policer Types¶

Type	Description
`1r2c`	Single Rate Two Color
`1r3c`	Single Rate Three Color (RFC 2697)
`2r3c-2698`	Two Rate Three Color (RFC 2698)
`2r3c-4115`	Two Rate Three Color (RFC 4115)
`2r3c-mef5cf1`	MEF 5 CF1

Example: Simple Rate Limiter¶

configure policer name rate-100m cir 100000 cb 10000 rate-type kbps type 1r2c conform-action transmit exceed-action drop
commit

Example: Three Color Policer¶

configure policer name gold-service cir 100000 cb 10000 eir 150000 eb 15000 rate-type kbps type 2r3c-2698 conform-action transmit exceed-action mark-and-transmit violate-action drop
commit

View Policers¶

show policer

Apply Policer to Interface¶

Input Policer¶

policer input rate-100m GE12/0/0
commit

Output Policer¶

policer output rate-100m GE12/0/0
commit

Remove Policer¶

policer input del rate-100m GE12/0/0
commit

DSCP Values Reference¶

DSCP	PHB	Description
0	BE	Best Effort
8	CS1	Scavenger
10	AF11	Assured Forwarding 1-1
12	AF12	Assured Forwarding 1-2
14	AF13	Assured Forwarding 1-3
18	AF21	Assured Forwarding 2-1
20	AF22	Assured Forwarding 2-2
22	AF23	Assured Forwarding 2-3
26	AF31	Assured Forwarding 3-1
28	AF32	Assured Forwarding 3-2
30	AF33	Assured Forwarding 3-3
34	AF41	Assured Forwarding 4-1
36	AF42	Assured Forwarding 4-2
38	AF43	Assured Forwarding 4-3
46	EF	Expedited Forwarding
48	CS6	Network Control
56	CS7	Network Control

Bandwidth Limiting Example¶

Per-Customer Rate Limiting¶

# Create policers for different service tiers
configure policer name bronze-10m cir 10000 cb 1000 rate-type kbps type 1r2c conform-action transmit exceed-action drop

configure policer name silver-50m cir 50000 cb 5000 rate-type kbps type 1r2c conform-action transmit exceed-action drop

configure policer name gold-100m cir 100000 cb 10000 rate-type kbps type 1r2c conform-action transmit exceed-action drop

# Apply to customer interfaces
policer input bronze-10m GE12/0/0.100
policer input silver-50m GE12/0/0.200
policer input gold-100m GE12/0/0.300

commit

Troubleshooting¶

Check Policer Statistics¶

show policer

Verify Interface Binding¶

show qos record interface
show qos mark interface

Command Reference¶

Command	Description
`show policer`	Display policers
`configure policer name <name> ...`	Create policer
`policer input <name> <if>`	Apply input policer
`policer output <name> <if>`	Apply output policer
`policer input del <name> <if>`	Remove input policer
`qos record interface <if> input source ip`	Record QoS values
`qos mark interface <if> output source ip`	Mark packets
`show qos record interface`	Display QoS recording
`show qos mark interface`	Display QoS marking