示例：配置转发类
默认情况下，在所有平台上，四个输出队列均映射到四个 FPC，如"转发 等级概述"所示。在瞻博网络设备上，您最多可配置八个 FPC 和八个队列。
要配置最多八个 FPC，请包含 队列 语句在 [edit-service-class forwarding-class] 层次结构级别中：
[edit class-of-service forwarding-classes] queue queue-number class-name;
输出队列号为 0 到 7，您必须使用输出队列一对一映射转发类。队列 0 到 7 的默认时间表传输速率和缓冲区大小百分比分别为 95、0、0、5、0、0、0 和 0%。
例如，要配置八个 FPC 和八个队列之间的一对一映射，您可以使用以下配置：
[edit class-of-service]
forwarding-classes {
queue 0 be;
queue 1 ef;
queue 2 af;
queue 3 nc;
queue 4 ef1;
queue 5 ef2;
queue 6 af1;
queue 7 nc1;
}
定义八个分类器
[edit class-of-service]
classifiers {
dscp dscp-table {
forwarding-class ef {
loss-priority low code-points [101000, 101001];
loss-priority high code-points [101010, 101011];
}
forwarding-class af {
loss-priority low code-points [010000, 010001];
loss-priority high code-points [010010, 010011];
}
forwarding-class be {
loss-priority low code-points [000000];
}
forwarding-class nc {
loss-priority low code-points [111000];
}
forwarding-class ef1 {
loss-priority low code-points [101100, 101101];
loss-priority high code-points [101110];
}
forwarding-class af1 {
loss-priority high code-points [101110];
}
forwarding-class ef2 {
loss-priority low code-points [101111];
}
forwarding-class nc1 {
loss-priority low code-points [111001];
}
}
}
将八个时间表添加到调度器图
配置可全局应用于所有接口（仅限于四个队列的接口）的自定义时间表映射：
[edit class-of-service]
scheduler-maps {
sched {
forwarding-class be scheduler Q0;
forwarding-class ef scheduler Q1;
forwarding-class af scheduler Q2;
forwarding-class nc scheduler Q3;
forwarding-class ef1 scheduler Q4;
forwarding-class ef2 scheduler Q5;
forwarding-class af1 scheduler Q6;
forwarding-class nc1 scheduler Q7;
}
}
schedulers {
Q0 {
transmit-rate percent 25;
buffer-size percent 25;
priority low;
drop-profile-map loss-priority any protocol both drop-default;
}
Q1 {
buffer-size temporal 2000;
priority strict-high;
drop-profile-map loss-priority any protocol both drop-ef;
}
Q2 {
transmit-rate percent 35;
buffer-size percent 35;
priority low;
drop-profile-map loss-priority any protocol both drop-default;
}
Q3 {
transmit-rate percent 5;
buffer-size percent 5;
drop-profile-map loss-priority any protocol both drop-default;
}
Q4 {
transmit-rate percent 5;
priority high;
drop-profile-map loss-priority any protocol both drop-ef;
}
Q5 {
transmit-rate percent 10;
priority high;
drop-profile-map loss-priority any protocol both drop-ef;
}
Q6 {
transmit-rate remainder;
priority low;
drop-profile-map loss-priority any protocol both drop-default;
}
Q7 {
transmit-rate percent 5;
priority high;
drop-profile-map loss-priority any protocol both drop-default;
}
}
配置 IP 优先级分类器并重写表
[edit class-of-service]
classifiers {
inet-precedence inet-classifier {
forwarding-class be {
loss-priority low code-points 000;
}
forwarding-class af11 {
loss-priority high code-points 001;
}
forwarding-class ef {
loss-priority low code-points 010;
}
forwarding-class nc1 {
loss-priority high code-points 011;
}
forwarding-class be1 {
loss-priority low code-points 100;
}
forwarding-class af12 {
loss-priority high code-points 101;
}
forwarding-class ef1 {
loss-priority low code-points 110;
}
forwarding-class nc2 {
loss-priority high code-points 111;
}
}
}
exp exp-rw-table {
forwarding-class be {
loss-priority low code-point 000;
}
forwarding-class af11 {
loss-priority high code-point 001;
}
forwarding-class ef {
loss-priority low code-point 010;
}
forwarding-class nc1 {
loss-priority high code-point 111;
}
forwarding-class be1 {
loss-priority low code-point 100;
}
forwarding-class af12 {
loss-priority high code-point 101;
}
forwarding-class ef1 {
loss-priority low code-point 110;
}
forwarding-class nc2 {
loss-priority low code-point 111;
}
}
inet-precedence inet-rw-table {
forwarding-class be {
loss-priority low code-point 000;
}
forwarding-class af11 {
loss-priority high code-point 001;
}
forwarding-class ef {
loss-priority low code-point 010;
}
forwarding-class nc1 {
loss-priority low code-point 111;
}
forwarding-class be1 {
loss-priority low code-point 100;
}
forwarding-class af12 {
loss-priority high code-point 101;
}
forwarding-class ef1 {
loss-priority low code-point 110;
}
forwarding-class nc2 {
loss-priority low code-point 111;
}
}
使用转发IDP配置策略
使用转发IDP配置一个策略，作为重写 IP 数据包的 DSCP 值的操作：
[edit class-of-service]
security idp idp-policy policy_name rulebase-ips rule rule_name {
then {
action {
class-of-service {
forwarding-class forwarding-class-name;
dscp-code-point value;
}
}
}
}