30.QOS service quality-Huawei (3)

Huawei QOS service quality:

Contains content: flow classification, speed limit, congestion management, congestion avoidance, policy routing.

QOS (flow Classification) based on ACL

V create ACL

[huawei] acl name acl1 # enters the ACL configuration item

[huawei-acl-adv-acl1] rule 101permit protocol source source IP anti-mask destination destination IP anti-mask

[huawei-acl-adv-acl1] quit # defines ACL

Note: blue is the calling relationship.

V-stream classification

[huawei] traffic classifier class1 # stream classification

[huawei-classifier-class1] if-match acl acl1 # calls ACL

[huawei-classifier-class1] quit

V flow behavior

[huawei] traffic behavior xingwei1 # create flow behavior

[huawei-behavior-xingwei1] remark 8021p 5 # set flow priority

[huawei-behavior-xingwei1] remark dscp 40 # flow priority based on DSCP

[huawei-behavior-xingwei1] car cir 8000 pir 10000 green pass # Speed limit (traffic regulation)

[huawei-behavior-xingwei1] car cir 8000 cbs 10000 # Speed limit (Traffic × ×)

[huawei-behavior-xingwei1] statistic enable # enables traffic statistics

[huawei-behavior-xingwei1] redirect ip-nexthop 1.1.1.1 # Policy routing (specifies the next hop address of the traffic)

[huawei-behavior-xingwei1] quit

Note: DSCP: differentiated service coding point (value range 0,63). The higher the value, the higher the priority.

Regulation: CIR: committed rate, PIR: the rate at which traffic is added to the barrel. Unit: KB/ second

* *: CIR: committed rate, CBS: committed burst rate. Unit: KB/ second

Recommended flow priority

0

Best effort to serve data

one

Medium priority data

two

High priority data

three

calling signal

four

Videoconferencing

five

Voice call

V define flow policy

[huawei] traffic policy policy1 # create flow Policy

[huawei-policy-policy1] classifier class1 behavior xingwei1 # call flow classification and flow behavior

[huawei-policy-policy1] quit

V apply policies to interfaces

[huawei] interface gigabitethernet0/0/1 # enters the interface

[huawei-gigabitethernet0/0/1] traffic-policy policy1 inbound # uses policies for interfaces

[huawei-gigabitethernet0/0/1] quit

Note: inbound: entry ourbound: exit

Interface-based QOS (speed limit)

Traffic regulation: promised rate, discarded if it exceeds the traffic.

Traffic × ×: adjust the rate and use the traffic of the buffer to forward evenly.

V interface-based traffic regulation

[huawei] interface gigabitethernet0/0/1

[huawei-gigabitethernet0/0/1] qos lr inbound cir 8000 # Traffic Supervision

[huawei-gigabitethernet0/0/1] quit

V Traffic based on interface × × ×

[huawei] interface gigabitethernet0/0/1

[huawei-gigabitethernet0/0/1] qos lr inbound cir 8000 cbs 10000 # Traffic × ×

[huawei-gigabitethernet0/0/1] quit

Note: CIR: committed rate, CBS: committed burst rate, EBS: maximum burst rate, CIR/PIR: buffer rate.

Congestion avoidance and congestion Management of QOS

V create ACL

V-stream classification, call ACL

V-flow behavior, set flow priority

V configure the trust message for the interface

[huawei] interface gigabitethernet0/0/1

[huawei-gigabitethernet0/0/1] trust 8021p # configure trust message

[huawei-gigabitethernet0/0/1] quit

V congestion avoidance, corresponding queue number according to priority

[huawei] qos sred queue 2 red 500 discard-probability 1 yellow 1000 discard-probability 4

[huawei] qos sred queue 3 red 500 discard-probability 1 yellow 1000 discard-probability 4

[huawei] qos sred queue 4 red 500 discard-probability 1 yellow 1000 discard-probability 4

Note: SRED is a congestion avoidance technology. Parameter description: discard-probability: discard probability.

Queue

Color

Lower threshold

Discard probability

Corresponding discard probability

Queue 2 (one queue for one type of traffic)

Red

Yellow

five hundred

one thousand

one

four

Queue 3 (Video)

Red

Yellow

five hundred

one thousand

one

four

Queue 4 (Voice)

Red

Yellow

five hundred

one thousand

one

four

Interpretation: queue number = excellent priority

V congestion management

[huawei] interface gigabitethernet0/0/1

[huawei-gigabitethernet0/0/1] qos wrr # configure scheduling mode

[huawei-gigabitethernet0/0/1] qos queue 2 wrr weight 0 # call queue and set weight

[huawei-gigabitethernet0/0/1] qos queue 3 wrr weight 10 # call queue and set weight

[huawei-gigabitethernet0/0/1] qos queue 4 wrr weight 20 # call queue and set weight

[huawei-gigabitethernet0/0/1] quit

Note: weight: the higher the weight value, the higher the forwarding priority.