Ejemplo: Configurar clases de reenvío
De forma predeterminada en todas las plataformas, cuatro colas de salida se asignan a cuatro FC, como se muestra en Descripción general de clases de reenvío. En los dispositivos de Juniper Networks, puede configurar hasta ocho FCs y ocho colas.
Para configurar hasta ocho FC, incluya la instrucción queue en el nivel de jerarquía [editar clases de reenvío de clase de servicio] :
[edit class-of-service forwarding-classes] queue queue-number class-name;
El número de cola de salida puede ser del 0 al 7 y debe asignar las clases de reenvío de uno a uno con las colas de salida. La velocidad de transmisión predeterminada del programador y los porcentajes de tamaño de búfer para las colas del 0 al 7 son 95, 0, 0, 5, 0, 0, 0 y 0 por ciento, respectivamente.
Por ejemplo, para configurar una asignación uno a uno entre ocho FCs y ocho colas, usaría la siguiente configuración:
[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;
}
Definición de ocho clasificadores
[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];
}
}
}
Agregar ocho programadores a una asignación de programador
Configure una asignación de programador personalizada que se aplique globalmente a todas las interfaces, excepto aquellas que estén restringidas a cuatro colas:
[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;
}
}
Configuración de un clasificador de prioridad IP y tablas de reescritura
[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;
}
}
Configuración de una política de IDP con una clase de reenvío
Configure una política IDP con una clase de reenvío como una acción para reescribir los valores DSCP de los paquetes IP:
[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;
}
}
}
}