SUR CETTE PAGE
Exemple : distribution pondérée du trafic ECMP sur des voisins IS-IS à saut unique
Cet exemple montre comment configurer le routage ECMP (Weighted Equal Cost multichemin) pour distribuer le trafic à IS-IS voisins situés à un saut de distance afin de garantir une équilibrage de charge optimale. Le routage ECMP pondéré répartit le trafic de manière inégale sur plusieurs chemins pour un meilleur équilibrage de charge. Cependant, le routage ECMP pondéré est plus efficace qu’une répartition égale du trafic lors de l’équilibrage de charge par paquet.
Exigences
Cet exemple utilise les composants matériels et logiciels suivants :
Deux routeurs MX Series
Junos OS version 15.1F4 ou ultérieure
Avant de configurer ECMP pondéré dans un réseau IS-IS, assurez-vous de :
Configurez les adresses IP sur les interfaces des appareils.
Configurez IS-IS.
Configurer l’équilibrage de charge
Configurez une stratégie d’équilibrage de charge par paquet.
Vue d’ensemble
À partir de Junos OS version 15.1F4, vous pouvez configurer le protocole IS-IS pour obtenir les informations de bande passante de l’interface logique associées aux passerelles du saut suivant ECMP (Equal-Cost Multipath). Lors de l’équilibrage de charge par paquet, la distribution du trafic est basée sur la bande passante disponible afin de faciliter une utilisation optimale de la bande passante pour le trafic entrant sur un chemin ECMP d’une distance d’un saut. Le moteur de transfert de paquets ne distribue pas le trafic de manière égale, mais prend en compte les valeurs d’équilibre et distribue le trafic en fonction de la disponibilité de la bande passante. Toutefois, cette fonctionnalité n’est pas disponible pour les chemins ECMP distants de plus d’un saut.
Topologie
Sur la Figure 1, trois bundles Ethernet agrégés ae0, ae1 et ae2 avec quatre liens chacun, sont configurés entre le routeur R0 et le routeur R1. Le moteur de transfert de paquets répartit le trafic de manière inégale entre les trois bundles Ethernet lorsque l’une des liaisons tombe en panne, en fonction de la bande passante disponible.
Figure 1 : Distribution pondérée du trafic ECMP sur des voisins
IS-IS à saut unique
IS-IS à saut unique
La configuration
Configuration rapide de la CLI
Pour configurer rapidement cet exemple, copiez les commandes suivantes, collez-les dans un fichier texte, supprimez les sauts de ligne, modifiez tous les détails nécessaires pour qu’ils correspondent à votre configuration réseau, copiez et collez les commandes dans la CLI au niveau de la [edit] hiérarchie, puis entrez commit en mode configuration.
Routeur R0
set interfaces ge-1/1/4 description "LinkID: R0R1-1" set interfaces ge-0/0/0 description "LinkID: R0R1-2" set interfaces ge-1/2/1 description "LinkID: R0R1-3" set interfaces ge-1/2/2 description "LinkID: R0R1-4" set interfaces ge-1/2/0 description "LinkID: R0R1-5" set interfaces ge-1/2/3 description "LinkID: R0R1-6" set interfaces ge-0/1/6 description "LinkID: R0R1-7" set interfaces ge-1/1/6 description "LinkID: R0R1-8" set interfaces ge-1/1/5 description "LinkID: R0R1-9" set interfaces ge-1/3/3 description "LinkID: R0R1-10" set interfaces ge-1/2/8 description "LinkID: R0R1-11" set interfaces ge-0/1/8 description "LinkID: R0R1-12" set interfaces ge-0/1/7 description "LinkID: R0R1-13" set interfaces ge-0/0/1 description "LinkID: R0RT0" set chassis maximum-ecmp 64 set chassis redundancy graceful-switchover set chassis aggregated-devices ethernet device-count 64 set interfaces ge-0/0/1 unit 0 family inet address 21.1.1.1/24 set interfaces ge-0/0/1 unit 0 family iso set interfaces ge-1/1/4 gigether-options 802.3ad ae0 set interfaces ge-0/0/0 gigether-options 802.3ad ae0 set interfaces ge-1/2/1 gigether-options 802.3ad ae0 set interfaces ge-1/2/2 gigether-options 802.3ad ae0 set interfaces ge-1/2/0 gigether-options 802.3ad ae1 set interfaces ge-1/2/3 gigether-options 802.3ad ae1 set interfaces ge-0/1/6 gigether-options 802.3ad ae1 set interfaces ge-1/1/6 gigether-options 802.3ad ae1 set interfaces ge-1/1/5 gigether-options 802.3ad ae2 set interfaces ge-1/3/3 gigether-options 802.3ad ae2 set interfaces ge-1/2/8 gigether-options 802.3ad ae2 set interfaces ge-0/1/8 gigether-options 802.3ad ae2 set interfaces ge-0/1/7 unit 0 family inet address 10.3.1.1/24 set interfaces ge-0/1/7 unit 0 family iso set interfaces ae0 aggregated-ether-options minimum-links 1 set interfaces ae0 aggregated-ether-options lacp active set interfaces ae0 unit 0 family inet address 10.0.1.1/24 set interfaces ae0 unit 0 family iso set interfaces ae1 vlan-tagging set interfaces ae1 aggregated-ether-options minimum-links 1 set interfaces ae1 aggregated-ether-options lacp active set interfaces ae1 unit 0 family inet address 10.1.1.1/24 set interfaces ae1 unit 0 family iso set interfaces ae1 unit 1 bandwidth 1g; set interfaces ae1 unit 1 vlan-id 1; set interfaces ae1 unit 1 family inet address 13.1.1.1/24 set interfaces ae1 unit 0 family iso set interfaces ae1 unit 1 bandwidth 1g; set interfaces ae1 unit 1 vlan-id 2; set interfaces ae1 unit 1 family inet address 13.2.1.1/24 set interfaces ae1 unit 0 family iso set interfaces ae1 unit 1 bandwidth 1g; set interfaces ae1 unit 1 vlan-id 3; set interfaces ae1 unit 1 family inet address 13.3.1.1/24 set interfaces ae1 unit 0 family iso set interfaces ae1 unit 1 bandwidth 1g; set interfaces ae1 unit 1 vlan-id 4; set interfaces ae1 unit 1 family inet address 13.4.1.1/24 set interfaces ae1 unit 0 family iso set interfaces ae1 unit 1 bandwidth 1g; set interfaces ae1 unit 1 vlan-id 5; set interfaces ae1 unit 1 family inet address 13.5.1.1/24 set interfaces ae1 unit 0 family iso set interfaces ae1 unit 1 bandwidth 1g; set interfaces ae1 unit 1 vlan-id 6; set interfaces ae1 unit 1 family inet address 13.6.1.1/24 set interfaces ae1 unit 0 family iso set interfaces ae1 unit 1 bandwidth 1g; set interfaces ae1 unit 1 vlan-id 7; set interfaces ae1 unit 1 family inet address 13.7.1.1/24 set interfaces ae1 unit 0 family iso set interfaces ae1 unit 1 bandwidth 1g; set interfaces ae1 unit 1 vlan-id 8; set interfaces ae1 unit 1 family inet address 13.8.1.1/24 set interfaces ae1 unit 0 family iso set interfaces ae1 unit 1 bandwidth 1g; set interfaces ae1 unit 1 vlan-id 9; set interfaces ae1 unit 1 family inet address 13.9.1.1/24 set interfaces ae1 unit 0 family iso set interfaces ae1 unit 1 bandwidth 1g; set interfaces ae1 unit 1 vlan-id 10; set interfaces ae1 unit 1 family inet address 13.10.1.1/24 set interfaces ae1 unit 0 family iso set interfaces ae2 aggregated-ether-options minimum-links 2 set interfaces ae2 aggregated-ether-options lacp active set interfaces ae2 unit 0 family inet address 10.2.1.1/24 set interfaces ae2 unit 0 family iso set interfaces lo0 unit 0 family iso address 49.0001.0102.5516.3127.00 set routing-options forwarding-table export pplb set protocols isis interface ge-0/0/1.0 set protocols isis interface ge-0/1/7.0 level 1 metric 20 set protocols isis interface ge-0/1/7.0 level 2 metric 20 set protocols isis interface ae0.0 node-link-protection set protocols isis interface ae1.0 set protocols isis interface ae2.0 set protocols isis interface lo0.0 set policy-options policy-statement pplb then load-balance per-packet set protocols isis spf-options multipath weighted one-hop
Routeur R1
set interfaces ge-1/1/4 description "LinkID: R0R1-1" set interfaces ge-0/0/0 description "LinkID: R0R1-2" set interfaces ge-1/2/1 description "LinkID: R0R1-3" set interfaces ge-1/2/2 description "LinkID: R0R1-4" set interfaces ge-1/2/0 description "LinkID: R0R1-5" set interfaces ge-1/2/3 description "LinkID: R0R1-6" set interfaces ge-0/1/6 description "LinkID: R0R1-7" set interfaces ge-1/1/6 description "LinkID: R0R1-8" set interfaces ge-1/1/5 description "LinkID: R0R1-9" set interfaces ge-1/3/3 description "LinkID: R0R1-10" set interfaces ge-1/2/8 description "LinkID: R0R1-11" set interfaces ge-0/1/8 description "LinkID: R0R1-12" set interfaces ge-0/1/7 description "LinkID: R0R1-13" set interfaces ge-0/1/0 description "LinkID: R1RT0" set chassis aggregated-devices ethernet device-count 64 set interfaces ge-0/1/0 unit 0 family inet address 22.1.1.1/24 set interfaces ge-0/1/0 unit 0 family iso set interfaces ge-1/1/4 gigether-options 802.3ad ae0 set interfaces ge-0/0/0 gigether-options 802.3ad ae0 set interfaces ge-1/2/1 gigether-options 802.3ad ae0 set interfaces ge-1/2/2 gigether-options 802.3ad ae0 set interfaces ge-1/2/0 gigether-options 802.3ad ae1 set interfaces ge-1/2/3 gigether-options 802.3ad ae1 set interfaces ge-0/1/6 gigether-options 802.3ad ae1 set interfaces ge-1/1/6 gigether-options 802.3ad ae1 set interfaces ge-1/1/5 gigether-options 802.3ad ae2 set interfaces ge-1/3/3 gigether-options 802.3ad ae2 set interfaces ge-1/2/8 gigether-options 802.3ad ae2 set interfaces ge-0/1/8 gigether-options 802.3ad ae2 set interfaces ge-0/1/7 unit 0 family inet address 10.3.1.2/24 set interfaces ge-0/1/7 unit 0 family iso set interfaces ae0 aggregated-ether-options minimum-links 1 set interfaces ae0 aggregated-ether-options lacp active set interfaces ae0 unit 0 family inet address 10.0.1.2/24 set interfaces ae0 unit 0 family iso set interfaces ae1 aggregated-ether-options minimum-links 1 set interfaces ae1 aggregated-ether-options lacp active set interfaces ae1 unit 0 family inet address 10.1.1.2/24 set interfaces ae1 unit 0 family iso set interfaces ae2 aggregated-ether-options minimum-links 2 set interfaces ae2 aggregated-ether-options lacp active set interfaces ae2 unit 0 family inet address 10.2.1.2/24 set interfaces ae2 unit 0 family iso set interfaces lo0 unit 0 family iso address 49.0001.0102.5516.3130.00 set protocols isis export from-static set protocols isis interface ge-0/1/0.0 set protocols isis interface ge-0/1/7.0 set protocols isis interface ae0.0 set protocols isis interface ae1.0 set protocols isis interface ae2.0 set protocols isis interface lo0.0 set policy-options policy-statement from-static from protocol static set policy-options policy-statement from-static then accept
Configuration du routeur R0
Procédure étape par étape
L’exemple suivant nécessite que vous naviguiez à différents niveaux dans la hiérarchie de configuration. Pour plus d’informations sur la navigation dans la CLI, consultez Utilisation de l’éditeur CLI en mode configuration dans le Guide de l’utilisateur de la CLI.
Pour configurer le routeur R0 :
Remarque :
Répétez cette procédure pour le routeur R1 après avoir modifié les noms, adresses et autres paramètres d’interface appropriés.
Spécifiez le nombre maximal d’interfaces ECMP pondérées que vous souhaitez configurer. Activez le basculement fluide et spécifiez le nombre d’interfaces Ethernet agrégées à créer.
[edit chassis]user@R0# set maximum-ecmp 64 user@R0# set redundancy graceful-switchover user@R0# set aggregated-devices ethernet device-count 64Configurez les interfaces avec plusieurs liens vers la même destination pour l’équilibrage de charge du trafic.
[edit interfaces]user@R0# set ge-1/1/4 description "LinkID: R0R1-1" user@R0# set ge-0/0/0 description "LinkID: R0R1-2" user@R0# set ge-1/2/1 description "LinkID: R0R1-3" user@R0# set ge-1/2/2 description "LinkID: R0R1-4" user@R0# set ge-1/2/0 description "LinkID: R0R1-5" user@R0# set ge-1/2/3 description "LinkID: R0R1-6" user@R0# set ge-0/1/6 description "LinkID: R0R1-7" user@R0# set ge-1/1/6 description "LinkID: R0R1-8" user@R0# set ge-1/1/5 description "LinkID: R0R1-9" user@R0# set ge-1/3/3 description "LinkID: R0R1-10" user@R0# set ge-1/2/8 description "LinkID: R0R1-11" user@R0# set ge-0/1/8 description "LinkID: R0R1-12" user@R0# set ge-0/1/7 description "LinkID: R0R1-13" user@R0# set ge-0/0/1 description "LinkID: R0RT0"Configurez les interfaces logiques avec la bande passante appropriée en fonction de la bande passante physique sous-jacente.
user@R0# set ae1 unit 1 bandwidth 1g; user@R0# set ae1 unit 1 vlan-id 1; user@R0# set ae1 unit 1 family inet address 13.1.1.1/24 user@R0# set ae1 unit 0 family iso user@R0# set ae1 unit 1 bandwidth 1g; user@R0# set ae1 unit 1 vlan-id 2; user@R0# set ae1 unit 1 family inet address 13.2.1.1/24 user@R0# set ae1 unit 0 family iso user@R0# set ae1 unit 1 bandwidth 1g; user@R0# set ae1 unit 1 vlan-id 3; user@R0# set ae1 unit 1 family inet address 13.3.1.1/24 user@R0# set ae1 unit 0 family iso user@R0# set ae1 unit 1 bandwidth 1g; user@R0# set ae1 unit 1 vlan-id 4; user@R0# set ae1 unit 1 family inet address 13.4.1.1/24 user@R0# set ae1 unit 0 family iso user@R0# set ae1 unit 1 bandwidth 1g; user@R0# set ae1 unit 1 vlan-id 5; user@R0# set ae1 unit 1 family inet address 13.5.1.1/24 user@R0# set ae1 unit 0 family iso user@R0# set ae1 unit 1 bandwidth 1g; user@R0# set ae1 unit 1 vlan-id 6; user@R0# set ae1 unit 1 family inet address 13.6.1.1/24 user@R0# set ae1 unit 0 family iso user@R0# set ae1 unit 1 bandwidth 1g; user@R0# set ae1 unit 1 vlan-id 7; user@R0# set ae1 unit 1 family inet address 13.7.1.1/24 user@R0# set ae1 unit 0 family iso user@R0# set ae1 unit 1 bandwidth 1g; user@R0# set ae1 unit 1 vlan-id 8; user@R0# set ae1 unit 1 family inet address 13.8.1.1/24 user@R0# set ae1 unit 0 family iso user@R0# set ae1 unit 1 bandwidth 1g; user@R0# set ae1 unit 1 vlan-id 9; user@R0# set ae1 unit 1 family inet address 13.9.1.1/24 user@R0# set ae1 unit 0 family iso user@R0# set ae1 unit 1 bandwidth 1g; user@R0# set ae1 unit 1 vlan-id 10; user@R0# set ae1 unit 1 family inet address 13.10.1.1/24 user@R0# set ae1 unit 0 family iso
Remarque :Pour les interfaces logiques, configurez la bande passante des interfaces de manière à répartir le trafic sur des trajets multiples à coût égal en fonction de la bande passante de l’interface opérationnelle sous-jacente. Lorsque vous configurez plusieurs interfaces logiques sur une seule interface, configurez la bande passante logique appropriée pour chaque interface logique afin de voir la répartition du trafic souhaitée sur les interfaces logiques.
Configurez les adresses IP sur les interfaces avec des adresses IPv4 ou IPv6, en fonction des besoins de votre réseau.
[edit interfaces]user@R0# set ge-0/0/1 unit 0 family inet address 21.1.1.1/24 user@R0# set ge-0/0/1 unit 0 family iso user@R0# set ge-0/1/7 unit 0 family inet address 10.3.1.1/24 user@R0# set ge-0/1/7 unit 0 family isoConfigurez les quatre liaisons membres de l’offre Ethernet agrégée ae0.
[edit interfaces]user@R0# set ge-1/1/4 gigether-options 802.3ad ae0 user@R0# set ge-0/0/0 gigether-options 802.3ad ae0 user@R0# set ge-1/2/1 gigether-options 802.3ad ae0 user@R0# set ge-1/2/2 gigether-options 802.3ad ae0Configurez les quatre liaisons membres de l’offre Ethernet agrégée ae1.
[edit interfaces]user@R0# set ge-1/2/0 gigether-options 802.3ad ae1 user@R0# set ge-1/2/3 gigether-options 802.3ad ae1 user@R0# set ge-0/1/6 gigether-options 802.3ad ae1 user@R0# set ge-1/1/6 gigether-options 802.3ad ae1Configurez les quatre liaisons membres de l’offre Ethernet agrégée ae2.
[edit interfaces]user@R0# set ge-1/1/5 gigether-options 802.3ad ae2 user@R0# set ge-1/3/3 gigether-options 802.3ad ae2 user@R0# set ge-1/2/8 gigether-options 802.3ad ae2 user@R0# set ge-0/1/8 gigether-options 802.3ad ae2Configurez l’adresse IP et le protocole LACP (Link Aggregation Control Protocol) pour l’interface Ethernet agrégée ae0.
[edit interfaces]user@R0# set ae0 aggregated-ether-options minimum-links 1 user@R0# set ae0 aggregated-ether-options lacp active user@R0# set ae0 unit 0 family inet address 10.0.1.1/24 user@R0# set ae0 unit 0 family isoConfigurez l’adresse IP et le protocole LACP (Link Aggregation Control Protocol) pour l’interface Ethernet agrégée ae1.
[edit interfaces]user@R0# set ae1 aggregated-ether-options minimum-links 1 user@R0# set ae1 aggregated-ether-options lacp active user@R0# set ae1 unit 0 family inet address 10.1.1.1/24 user@R0# set ae1 unit 0 family isoConfigurez l’adresse IP et le protocole LACP (Link Aggregation Control Protocol) pour l’interface Ethernet agrégée ae2.
[edit interfaces]user@R0# set ae2 aggregated-ether-options minimum-links 2 user@R0# set ae2 aggregated-ether-options lacp active user@R0# set ae2 unit 0 family inet address 10.2.1.1/24 user@R0# set ae2 unit 0 family isoConfigurez l’adresse de l’interface de bouclage et l’adresse de la famille iso.
[edit interfaces]user@R0# set lo0 unit 0 family inet address 10.168.0.4/32 user@R0# set lo0 unit 0 family iso address 49.0001.0102.5516.3127.00Configurez IS-IS sur toutes les interfaces et sur les bundles AE.
[edit protocols]user@R0# set isis interface ge-0/0/1.0 user@R0# set isis interface ge-0/1/7.0 level 1 metric 20 user@R0# set isis interface ge-0/1/7.0 level 2 metric 20 user@R0# set isis interface ae0.0 node-link-protection user@R0# set isis interface ae1.0 user@R0# set isis interface ae2.0 user@R0# set isis interface lo0.0Configurez l’équilibrage de charge par paquet.
[edit policy-options]user@R0# set policy-statement pplb then load-balance per-packetAppliquez une stratégie d’équilibrage de charge par paquet.
[edit routing-options]user@R0# set forwarding-table user@R0# set export pplbActivez la distribution pondérée du trafic ECMP sur les voisins IS-IS directement connectés.
[edit protocols isis]user@R0# set spf-options multipath weighted one-hop
Résultats
En mode configuration, confirmez votre configuration en entrant les show chassiscommandes , , show policy-optionsshow interfacesshow protocols, , et .show routing-options Si la sortie n’affiche pas la configuration prévue, répétez les instructions de cet exemple pour corriger la configuration.
[edit] user@R0# show chassis maximum-ecmp 64; redundancy graceful-switchover; aggregated-devices ethernet device-count 64;
[edit]
user@R0# show interfaces
ge-0/0/0 {
description "LinkID: R0R1-2";
gigether-options {
802.3ad ae0;
}
}
ge-0/0/1 {
description "LinkID: R0RT0";
unit 0 {
family inet {
address 21.1.1.1/24;
}
family iso;
}
}
ge-0/1/6 {
description "LinkID: R0R1-7";
gigether-options {
802.3ad ae1;
}
}
ge-0/1/7 {
description "LinkID: R0R1-13";
unit 0 {
family inet {
address 10.3.1.1/24;
}
family iso;
}
}
ge-0/1/8 {
description "LinkID: R0R1-12";
gigether-options {
802.3ad ae2;
}
}
ge-1/1/4 {
description "LinkID: R0R1-1";
gigether-options {
802.3ad ae0;
}
}
ge-1/1/5 {
description "LinkID: R0R1-9";
gigether-options {
802.3ad ae2;
}
}
ge-1/1/6 {
description "LinkID: R0R1-8";
gigether-options {
802.3ad ae1;
}
}
ge-1/2/0 {
description "LinkID: R0R1-5";
gigether-options {
802.3ad ae1;
}
}
ge-1/2/1 {
description "LinkID: R0R1-3";
gigether-options {
802.3ad ae0;
}
}
ge-1/2/2 {
description "LinkID: R0R1-4";
gigether-options {
802.3ad ae0;
}
}
ge-1/2/3 {
description "LinkID: R0R1-6";
gigether-options {
802.3ad ae1;
}
}
ge-1/2/8 {
description "LinkID: R0R1-11";
gigether-options {
802.3ad ae2;
}
}
ge-1/3/3 {
description "LinkID: R0R1-10";
gigether-options {
802.3ad ae2;
}
}
ae0 {
aggregated-ether-options {
minimum-links 1;
lacp {
active;
}
}
unit 0 {
family inet {
address 10.0.1.1/24;
}
family iso;
}
}
ae1 {
vlan-tagging;
aggregated-ether-options {
minimum-links 3;
lacp {
active;
}
}
unit 0 {
family inet {
address 10.1.1.1/24;
}
family iso;
}
unit 1 {
bandwidth 1g;
vlan-id 1;
family inet {
address 13.1.1.1/24;
}
family iso;
}
unit 2 {
bandwidth 1g;
vlan-id 2;
family inet {
address 13.2.1.1/24;
}
family iso;
}
unit 3 {
bandwidth 1g;
vlan-id 3;
family inet {
address 13.3.1.1/24;
}
family iso;
}
unit 4 {
bandwidth 1g;
vlan-id 4;
family inet {
address 13.4.1.1/24;
}
family iso;
}
unit 5 {
bandwidth 1g;
vlan-id 5;
family inet {
address 13.5.1.1/24;
}
family iso;
}
unit 6 {
bandwidth 1g;
vlan-id 6;
family inet {
address 13.6.1.1/24;
}
family iso;
}
unit 7 {
bandwidth 1g;
vlan-id 7;
family inet {
address 13.7.1.1/24;
}
family iso;
}
unit 8 {
bandwidth 1g;
vlan-id 8;
family inet {
address 13.8.1.1/24;
}
family iso;
}
unit 9 {
bandwidth 1g;
vlan-id 9;
family inet {
address 13.9.1.1/24;
}
family iso;
}
unit 10 {
bandwidth 1g;
vlan-id 10;
family inet {
address 13.10.1.1/24;
}
family iso;
}
}
ae2 {
aggregated-ether-options {
minimum-links 2;
lacp {
active;
}
}
unit 0 {
family inet {
address 10.2.1.1/24;
}
family iso;
}
}
lo0 {
unit 0 {
family inet {
address 192.168.0.4/32;
}
family iso {
address 49.0001.0102.5516.3127.00;
}
}
}
[edit]
user@R0# show protocols
isis {
spf-options {
multi-path {
weighted {
one-hop;
}
}
}
}
[edit]
user@R01# show policy-options
policy-statement pplb {
then {
load-balance per-packet;
}
}
[edit]
user@R0# show routing-options
forwarding-table {
export pplb;
}
Vérification
Vérifiez que la configuration fonctionne correctement.
- Vérifier la répartition égale du trafic sur des chemins multiples à coût égal
- Vérification de la répartition inégale du trafic sur la bande passante disponible
- Vérification de la répartition inégale du trafic sur les interfaces logiques
Vérifier la répartition égale du trafic sur des chemins multiples à coût égal
Objet
Vérifier que le trafic est réparti de manière égale sur les bundles Ethernet agrégés.
Mesures à prendre
À partir du mode opérationnel, entrez la show route 198.0.0.1 extensive commande.
user@R0> show route 198.0.0.1 extensive
inet.0: 10028 destinations, 10029 routes (10027 active, 0 holddown, 1 hidden)
198.0.0.1/32 (1 entry, 1 announced)
TSI:
KRT in-kernel 198.0.0.1/32 -> {10.0.1.2, 10.1.1.2, 10.2.1.2, 10.3.1.2}
*IS-IS Preference: 18
Level: 2
Next hop type: Router, Next hop index: 1048574
Address: 0x9ec5e10
Next-hop reference count: 20005
Next hop: 10.0.1.2 via ae0.0 weight 0x1 balance 33%
Session Id: 0x1b2
Next hop: 10.1.1.2 via ae1.0 weight 0x1 balance 33%, selected
Session Id: 0x1b1
Next hop: 10.2.1.2 via ae2.0 weight 0x1 balance 33%
Session Id: 0x1b3
Next hop: 10.3.1.2 via ge-0/1/7.0 weight 0xf000
Session Id: 0x1b0
State: <Active Int>
Age: 35 Metric: 20
Validation State: unverified
Task: IS-IS
Announcement bits (1): 0-KRT
AS path: I
user@R0> show interfaces ae0.0 extensive
Logical interface ae0.0 (Index 335) (SNMP ifIndex 625) (Generation 825)
Flags: Up SNMP-Traps 0x4004000 Encapsulation: ENET2
Statistics Packets pps Bytes bps
Bundle:
Input : 702 4 207265 4320
Output: 870567 33801 95801535 29746416
Adaptive Statistics:
Adaptive Adjusts: 0
Adaptive Scans : 0
Adaptive Updates: 0
Link:
ge-0/0/0.0
Input : 149 1 17924 992
Output: 218927 8586 24081728 7556344
ge-1/1/4.0
Input : 134 1 16616 992
Output: 201384 7781 22152240 6847320
ge-1/2/1.0
Input : 136 1 16864 992
Output: 212760 8238 23443069 7250056
ge-1/2/2.0
Input : 283 1 155861 1344
Output: 237496 9196 26124498 8092696
Aggregate member links: 4
LACP info: Role System System Port Port Port
priority identifier priority number key
ge-0/0/0.0 Actor 127 3c:61:04:2f:c7:c0 127 1 1
ge-0/0/0.0 Partner 127 3c:61:04:2d:9f:c0 127 1 1
ge-1/1/4.0 Actor 127 3c:61:04:2f:c7:c0 127 4 1
ge-1/1/4.0 Partner 127 3c:61:04:2d:9f:c0 127 4 1
ge-1/2/1.0 Actor 127 3c:61:04:2f:c7:c0 127 8 1
ge-1/2/1.0 Partner 127 3c:61:04:2d:9f:c0 127 8 1
ge-1/2/2.0 Actor 127 3c:61:04:2f:c7:c0 127 9 1
ge-1/2/2.0 Partner 127 3c:61:04:2d:9f:c0 127 9 1
LACP Statistics: LACP Rx LACP Tx Unknown Rx Illegal Rx
ge-0/0/0.0 130 125 0 0
ge-1/1/4.0 127 121 0 0
ge-1/2/1.0 127 123 0 0
ge-1/2/2.0 128 123 0 0
Marker Statistics: Marker Rx Resp Tx Unknown Rx Illegal Rx
ge-0/0/0.0 0 0 0 0
ge-1/1/4.0 0 0 0 0
ge-1/2/1.0 0 0 0 0
ge-1/2/2.0 0 0 0 0
Protocol inet, MTU: 1500, Generation: 1699, Route table: 0
Flags: Sendbcast-pkt-to-re
Addresses, Flags: Is-Preferred Is-Primary
Destination: 10.0.1/24, Local: 10.0.1.1, Broadcast: 10.0.1.255, Generation: 1501
Protocol iso, MTU: 1497, Generation: 1700, Route table: 0
Flags: Is-Primary
Protocol multiservice, MTU: Unlimited, Generation: 1701, Route table: 0
Flags: Is-Primary
Policer: Input: __default_arp_policer__
user@R0> show interfaces ae1.0 extensive
Logical interface ae1.0 (Index 336) (SNMP ifIndex 666) (Generation 826)
Flags: Up SNMP-Traps 0x4004000 Encapsulation: ENET2
Statistics Packets pps Bytes bps
Bundle:
Input : 707 4 206275 3968
Output: 849981 32979 93602009 29023264
Adaptive Statistics:
Adaptive Adjusts: 0
Adaptive Scans : 0
Adaptive Updates: 0
Link:
ge-0/1/6.0
Input : 148 1 17800 992
Output: 198301 7819 21812806 6880984
ge-1/1/6.0
Input : 134 1 16616 992
Output: 209149 8088 23006390 7117728
ge-1/2/0.0
Input : 136 1 16864 992
Output: 215518 8291 23811445 7296528
ge-1/2/3.0
Input : 289 1 154995 992
Output: 227013 8781 24971368 7728024
Aggregate member links: 4
LACP info: Role System System Port Port Port
priority identifier priority number key
ge-0/1/6.0 Actor 127 3c:61:04:2f:c7:c0 127 2 2
ge-0/1/6.0 Partner 127 3c:61:04:2d:9f:c0 127 2 2
ge-1/1/6.0 Actor 127 3c:61:04:2f:c7:c0 127 6 2
ge-1/1/6.0 Partner 127 3c:61:04:2d:9f:c0 127 6 2
ge-1/2/0.0 Actor 127 3c:61:04:2f:c7:c0 127 7 2
ge-1/2/0.0 Partner 127 3c:61:04:2d:9f:c0 127 7 2
ge-1/2/3.0 Actor 127 3c:61:04:2f:c7:c0 127 10 2
ge-1/2/3.0 Partner 127 3c:61:04:2d:9f:c0 127 10 2
LACP Statistics: LACP Rx LACP Tx Unknown Rx Illegal Rx
ge-0/1/6.0 129 123 0 0
ge-1/1/6.0 127 121 0 0
ge-1/2/0.0 127 123 0 0
ge-1/2/3.0 128 123 0 0
Marker Statistics: Marker Rx Resp Tx Unknown Rx Illegal Rx
ge-0/1/6.0 0 0 0 0
ge-1/1/6.0 0 0 0 0
ge-1/2/0.0 0 0 0 0
ge-1/2/3.0 0 0 0 0
Protocol inet, MTU: 1500, Generation: 1702, Route table: 0
Flags: Sendbcast-pkt-to-re
Addresses, Flags: Is-Preferred Is-Primary
Destination: 10.1.1/24, Local: 10.1.1.1, Broadcast: 10.1.1.255, Generation: 1503
Protocol iso, MTU: 1497, Generation: 1703, Route table: 0
Protocol multiservice, MTU: Unlimited, Generation: 1704, Route table: 0
Policer: Input: __default_arp_policer__
user@R0> show interfaces ae2.0 extensive
Logical interface ae2.0 (Index 337) (SNMP ifIndex 961) (Generation 827)
Flags: Up SNMP-Traps 0x4004000 Encapsulation: ENET2
Statistics Packets pps Bytes bps
Bundle:
Input : 702 4 224128 3968
Output: 855472 33229 94215862 29243664
Adaptive Statistics:
Adaptive Adjusts: 0
Adaptive Scans : 0
Adaptive Updates: 0
Link:
ge-0/1/8.0
Input : 137 1 16988 992
Output: 213214 8377 23453540 7372232
ge-1/1/5.0
Input : 137 1 16988 992
Output: 212174 8244 23339050 7255368
ge-1/2/8.0
Input : 135 1 16740 992
Output: 210583 8144 23164099 7167296
ge-1/3/3.0
Input : 293 1 173412 992
Output: 219501 8464 24259173 7448768
Aggregate member links: 4
LACP info: Role System System Port Port Port
priority identifier priority number key
ge-0/1/8.0 Actor 127 3c:61:04:2f:c7:c0 127 3 3
ge-0/1/8.0 Partner 127 3c:61:04:2d:9f:c0 127 3 3
ge-1/1/5.0 Actor 127 3c:61:04:2f:c7:c0 127 5 3
ge-1/1/5.0 Partner 127 3c:61:04:2d:9f:c0 127 5 3
ge-1/2/8.0 Actor 127 3c:61:04:2f:c7:c0 127 11 3
ge-1/2/8.0 Partner 127 3c:61:04:2d:9f:c0 127 11 3
ge-1/3/3.0 Actor 127 3c:61:04:2f:c7:c0 127 12 3
ge-1/3/3.0 Partner 127 3c:61:04:2d:9f:c0 127 12 3
LACP Statistics: LACP Rx LACP Tx Unknown Rx Illegal Rx
ge-0/1/8.0 127 123 0 0
ge-1/1/5.0 130 123 0 0
ge-1/2/8.0 129 124 0 0
ge-1/3/3.0 129 124 0 0
Marker Statistics: Marker Rx Resp Tx Unknown Rx Illegal Rx
ge-0/1/8.0 0 0 0 0
ge-1/1/5.0 0 0 0 0
ge-1/2/8.0 0 0 0 0
ge-1/3/3.0 0 0 0 0
Protocol inet, MTU: 1500, Generation: 1705, Route table: 0
Flags: Sendbcast-pkt-to-re
Addresses, Flags: Is-Preferred Is-Primary
Destination: 10.2.1/24, Local: 10.2.1.1, Broadcast: 10.2.1.255, Generation: 1505
Protocol iso, MTU: 1497, Generation: 1706, Route table: 0
Protocol multiservice, MTU: Unlimited, Generation: 1707, Route table: 0
Policer: Input: __default_arp_policer__
Signification
L’IS-IS répartit le trafic de manière égale lorsque les trois bundles Ethernet agrégés disposent de la même bande passante disponible.
Vérification de la répartition inégale du trafic sur la bande passante disponible
Objet
Vérifier que l’IS-IS répartit le trafic de manière inégale lorsqu’une des liaisons agrégées est en panne pendant l’équilibrage de charge par paquet en fonction de la bande passante disponible.
Mesures à prendre
Désactivez l’une des liaisons sur le bundle ae0 afin que la bande passante disponible soit de 3g sur ae0 et 4g sur ae1 et ae2. À partir du mode opérationnel, entrez la show route 198.0.0.1 extensive commande.
user@R0> show route 198.0.0.1 extensive
inet.0: 10028 destinations, 10029 routes (10027 active, 0 holddown, 1 hidden)
198.0.0.1/32 (1 entry, 1 announced)
TSI:
KRT in-kernel 198.0.0.1/32 -> {10.0.1.2, 10.1.1.2, 10.2.1.2, 10.3.1.2}
*IS-IS Preference: 18
Level: 2
Next hop type: Router, Next hop index: 1048575
Address: 0x9ec55d0
Next-hop reference count: 20005
Next hop: 10.0.1.2 via ae0.0 weight 0x1 balance 27%
Session Id: 0x1b2
Next hop: 10.1.1.2 via ae1.0 weight 0x1 balance 36%, selected
Session Id: 0x1b1
Next hop: 10.2.1.2 via ae2.0 weight 0x1 balance 36%
Session Id: 0x1b3
Next hop: 10.3.1.2 via ge-0/1/7.0 weight 0xf000
Session Id: 0x1b0
State:<Active Int>
Age: 22 Metric: 20
Validation State: unverified
Task: IS-IS
Announcement bits (1): 0-KRT
AS path: I
user@R0> show interfaces ae0.0 extensive
Logical interface ae0.0 (Index 335) (SNMP ifIndex 625) (Generation 825)
Flags: Up SNMP-Traps 0x4004000 Encapsulation: ENET2
Statistics Packets pps Bytes bps
Bundle:
Input : 793 3 218290 2976
Output: 1617811 27223 178003101 23957320
Adaptive Statistics:
Adaptive Adjusts: 0
Adaptive Scans : 0
Adaptive Updates: 0
Link:
ge-0/0/0.0
Input : 182 1 21794 992
Output: 461045 9423 50717650 8292776
ge-1/1/4.0 <-- down
Input : 139 0 17236 0
Output: 241334 0 26546740 0
ge-1/2/1.0
Input : 162 1 20088 992
Output: 444340 8979 48918653 7901976
ge-1/2/2.0
Input : 310 1 159172 992
Output: 471092 8821 51820058 7762568
Aggregate member links: 4
LACP info: Role System System Port Port Port
priority identifier priority number key
ge-0/0/0.0 Actor 127 3c:61:04:2f:c7:c0 127 1 1
ge-0/0/0.0 Partner 127 3c:61:04:2d:9f:c0 127 1 1
ge-1/1/4.0 Actor 127 3c:61:04:2f:c7:c0 127 4 1
ge-1/1/4.0 Partner 1 00:00:00:00:00:00 1 4 1
ge-1/2/1.0 Actor 127 3c:61:04:2f:c7:c0 127 8 1
ge-1/2/1.0 Partner 127 3c:61:04:2d:9f:c0 127 8 1
ge-1/2/2.0 Actor 127 3c:61:04:2f:c7:c0 127 9 1
ge-1/2/2.0 Partner 127 3c:61:04:2d:9f:c0 127 9 1
LACP Statistics: LACP Rx LACP Tx Unknown Rx Illegal Rx
ge-0/0/0.0 161 156 0 0
ge-1/1/4.0 151 145 0 0
ge-1/2/1.0 158 154 0 0
ge-1/2/2.0 159 154 0 0
Marker Statistics: Marker Rx Resp Tx Unknown Rx Illegal Rx
ge-0/0/0.0 0 0 0 0
ge-1/1/4.0 0 0 0 0
ge-1/2/1.0 0 0 0 0
ge-1/2/2.0 0 0 0 0
Protocol inet, MTU: 1500, Generation: 1699, Route table: 0
Flags: Sendbcast-pkt-to-re
Addresses, Flags: Is-Preferred Is-Primary
Destination: 10.0.1/24, Local: 10.0.1.1, Broadcast: 10.0.1.255, Generation: 1501
Protocol iso, MTU: 1497, Generation: 1700, Route table: 0
Flags: Is-Primary
Protocol multiservice, MTU: Unlimited, Generation: 1701, Route table: 0
Flags: Is-Primary
Policer: Input: __default_arp_policer__
user@R0> show interfaces ae1.0 extensive
Logical interface ae1.0 (Index 336) (SNMP ifIndex 666) (Generation 826)
Flags: Up SNMP-Traps 0x4004000 Encapsulation: ENET2
Statistics Packets pps Bytes bps
Bundle:
Input : 817 5 219555 4672
Output: 1756031 35775 193270683 31483104
Adaptive Statistics:
Adaptive Adjusts: 0
Adaptive Scans : 0
Adaptive Updates: 0
Link:
ge-0/1/6.0
Input : 174 1 21024 992
Output: 411469 8414 45261286 7404544
ge-1/1/6.0
Input : 159 1 19716 992
Output: 433700 8893 47707000 7826296
ge-1/2/0.0
Input : 161 1 19964 992
Output: 447338 9190 49314819 8087408
ge-1/2/3.0
Input : 323 2 158851 1696
Output: 463524 9278 50987578 8164856
Aggregate member links: 4
LACP info: Role System System Port Port Port
priority identifier priority number key
ge-0/1/6.0 Actor 127 3c:61:04:2f:c7:c0 127 2 2
ge-0/1/6.0 Partner 127 3c:61:04:2d:9f:c0 127 2 2
ge-1/1/6.0 Actor 127 3c:61:04:2f:c7:c0 127 6 2
ge-1/1/6.0 Partner 127 3c:61:04:2d:9f:c0 127 6 2
ge-1/2/0.0 Actor 127 3c:61:04:2f:c7:c0 127 7 2
ge-1/2/0.0 Partner 127 3c:61:04:2d:9f:c0 127 7 2
ge-1/2/3.0 Actor 127 3c:61:04:2f:c7:c0 127 10 2
ge-1/2/3.0 Partner 127 3c:61:04:2d:9f:c0 127 10 2
LACP Statistics: LACP Rx LACP Tx Unknown Rx Illegal Rx
ge-0/1/6.0 159 153 0 0
ge-1/1/6.0 157 151 0 0
ge-1/2/0.0 157 153 0 0
ge-1/2/3.0 158 153 0 0
Marker Statistics: Marker Rx Resp Tx Unknown Rx Illegal Rx
ge-0/1/6.0 0 0 0 0
ge-1/1/6.0 0 0 0 0
ge-1/2/0.0 0 0 0 0
ge-1/2/3.0 0 0 0 0
Protocol inet, MTU: 1500, Generation: 1702, Route table: 0
Flags: Sendbcast-pkt-to-re
Addresses, Flags: Is-Preferred Is-Primary
Destination: 10.1.1/24, Local: 10.1.1.1, Broadcast: 10.1.1.255, Generation: 1503
Protocol iso, MTU: 1497, Generation: 1703, Route table: 0
Protocol multiservice, MTU: Unlimited, Generation: 1704, Route table: 0
Policer: Input: __default_arp_policer__
user@R0> show interfaces ae2.0 extensive
Logical interface ae2.0 (Index 337) (SNMP ifIndex 961) (Generation 827)
Flags: Up SNMP-Traps 0x4004000 Encapsulation: ENET2
Statistics Packets pps Bytes bps
Bundle:
Input : 813 4 237569 3968
Output: 1786258 37008 196605473 32568272
Adaptive Statistics:
Adaptive Adjusts: 0
Adaptive Scans : 0
Adaptive Updates: 0
Link:
ge-0/1/8.0
Input : 163 1 20212 992
Output: 446715 9282 49138650 8168408
ge-1/1/5.0
Input : 162 1 20088 992
Output: 443846 9209 48822970 8104224
ge-1/2/8.0
Input : 161 1 19964 992
Output: 443943 9341 48833699 8220624
ge-1/3/3.0
Input : 327 1 177305 992
Output: 451754 9176 49810154 8075016
Aggregate member links: 4
LACP info: Role System System Port Port Port
priority identifier priority number key
ge-0/1/8.0 Actor 127 3c:61:04:2f:c7:c0 127 3 3
ge-0/1/8.0 Partner 127 3c:61:04:2d:9f:c0 127 3 3
ge-1/1/5.0 Actor 127 3c:61:04:2f:c7:c0 127 5 3
ge-1/1/5.0 Partner 127 3c:61:04:2d:9f:c0 127 5 3
ge-1/2/8.0 Actor 127 3c:61:04:2f:c7:c0 127 11 3
ge-1/2/8.0 Partner 127 3c:61:04:2d:9f:c0 127 11 3
ge-1/3/3.0 Actor 127 3c:61:04:2f:c7:c0 127 12 3
ge-1/3/3.0 Partner 127 3c:61:04:2d:9f:c0 127 12 3
LACP Statistics: LACP Rx LACP Tx Unknown Rx Illegal Rx
ge-0/1/8.0 157 153 0 0
ge-1/1/5.0 160 153 0 0
ge-1/2/8.0 159 154 0 0
ge-1/3/3.0 159 154 0 0
Marker Statistics: Marker Rx Resp Tx Unknown Rx Illegal Rx
ge-0/1/8.0 0 0 0 0
ge-1/1/5.0 0 0 0 0
ge-1/2/8.0 0 0 0 0
ge-1/3/3.0 0 0 0 0
Protocol inet, MTU: 1500, Generation: 1705, Route table: 0
Flags: Sendbcast-pkt-to-re
Addresses, Flags: Is-Preferred Is-Primary
Destination: 10.2.1/24, Local: 10.2.1.1, Broadcast: 10.2.1.255, Generation: 1505
Protocol iso, MTU: 1497, Generation: 1706, Route table: 0
Protocol multiservice, MTU: Unlimited, Generation: 1707, Route table: 0
Policer: Input: __default_arp_policer__
Signification
L’IS-IS en déduit que l’offre groupée ae0 ne dispose que de 3 g de bande passante. Par conséquent, modifie l’équilibrage de charge par paquet en fonction de la bande passante disponible. Selon le résultat, seulement 27 % de la bande passante est disponible sur ae0 car l’une des liaisons Ethernet agrégées est en panne. Ainsi, l’IS-IS répartit le trafic de manière inégale en fonction de la bande passante disponible.
Vérification de la répartition inégale du trafic sur les interfaces logiques
Objet
Vérifier qu’IS-IS répartit le trafic de manière inégale sur les interfaces logiques en fonction de la bande passante logique configurée.
Mesures à prendre
user@R0> show interfaces ae1.1
Logical interface ae1.1 (Index 605) (SNMP ifIndex 1910)
Flags: Up SNMP-Traps 0x4000 VLAN-Tag [ 0x8100.1 ] Encapsulation: ENET2
Bandwidth: 2000mbps
Statistics Packets pps Bytes bps
Bundle:
Input : 807 0 200537 360
Output: 277 0 55529 0
Adaptive Statistics:
Adaptive Adjusts: 0
Adaptive Scans : 0
Adaptive Updates: 0
Protocol inet, MTU: 1500
Max nh cache: 75000, New hold nh limit: 75000, Curr nh cnt: 1, Curr new hold cnt: 0, NH drop cnt: 0
Flags: Sendbcast-pkt-to-re
Addresses, Flags: Is-Preferred Is-Primary
Destination: 13.1.1/24, Local: 13.1.1.2, Broadcast: 13.1.1.255
Protocol iso, MTU: 1497
Protocol multiservice, MTU: Unlimited
user@R0> show interfaces ae1.2
Logical interface ae1.2 (Index 606) (SNMP ifIndex 1911)
Flags: Up SNMP-Traps 0x4000 VLAN-Tag [ 0x8100.2 ] Encapsulation: ENET2
Bandwidth: 1000mbps
Statistics Packets pps Bytes bps
Bundle:
Input : 836 0 208643 720
Output: 305 0 61006 0
Adaptive Statistics:
Adaptive Adjusts: 0
Adaptive Scans : 0
Adaptive Updates: 0
Protocol inet, MTU: 1500
Max nh cache: 75000, New hold nh limit: 75000, Curr nh cnt: 1, Curr new hold cnt: 0, NH drop cnt: 0
Flags: Sendbcast-pkt-to-re
Addresses, Flags: Is-Preferred Is-Primary
Destination: 13.2.1/24, Local: 13.2.1.2, Broadcast: 13.2.1.255
Protocol iso, MTU: 1497
Protocol multiservice, MTU: Unlimited