Introduction
Ce document décrit comment tester le délai d'aller-retour (RTT) entre les serveurs de communication vidéo Cisco (VCS). Chaque homologue d'une grappe doit se trouver à moins de 15 ms (30 ms RTT) de chaque VCS à ajouter à la grappe.
Conditions préalables
Exigences
Aucune exigence spécifique n'est associée à ce document.
Composants utilisés
Les informations contenues dans ce document sont basées sur Cisco VCS.
The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.
Produits connexes
Ce document peut également être utilisé avec les versions de matériel et de logiciel suivantes :
- Cisco TelePresence Conductor
- Cisco Expressway Core
- Cisco Expressway Edge
Test RTT
Effectuez ces étapes pour tester RTT.
- Connectez-vous à un VCS membre du cluster en tant qu'utilisateur racine et envoyez une requête ping à l'autre membre du cluster avec cette commande :
ping -i 0.03 -s 4000 10.83.23.28
- Laissez la requête ping s’exécuter pendant une à deux minutes :
4008 bytes from 10.83.23.28: icmp_req=1 ttl=64 time=0.266 ms
4008 bytes from 10.83.23.28: icmp_req=2 ttl=64 time=0.213 ms
4008 bytes from 10.83.23.28: icmp_req=3 ttl=64 time=0.214 ms
4008 bytes from 10.83.23.28: icmp_req=4 ttl=64 time=0.213 ms
4008 bytes from 10.83.23.28: icmp_req=5 ttl=64 time=0.213 ms
4008 bytes from 10.83.23.28: icmp_req=6 ttl=64 time=0.218 ms
4008 bytes from 10.83.23.28: icmp_req=7 ttl=64 time=0.219 ms
4008 bytes from 10.83.23.28: icmp_req=8 ttl=64 time=0.219 ms
4008 bytes from 10.83.23.28: icmp_req=9 ttl=64 time=0.219 ms
4008 bytes from 10.83.23.28: icmp_req=10 ttl=64 time=0.221 ms
4008 bytes from 10.83.23.28: icmp_req=11 ttl=64 time=0.225 ms
4008 bytes from 10.83.23.28: icmp_req=12 ttl=64 time=0.225 ms
4008 bytes from 10.83.23.28: icmp_req=13 ttl=64 time=0.230 ms
4008 bytes from 10.83.23.28: icmp_req=14 ttl=64 time=0.227 ms
4008 bytes from 10.83.23.28: icmp_req=15 ttl=64 time=0.229 ms
4008 bytes from 10.83.23.28: icmp_req=16 ttl=64 time=0.232 ms
4008 bytes from 10.83.23.28: icmp_req=17 ttl=64 time=0.231 ms
4008 bytes from 10.83.23.28: icmp_req=18 ttl=64 time=0.230 ms
4008 bytes from 10.83.23.28: icmp_req=19 ttl=64 time=0.232 ms
4008 bytes from 10.83.23.28: icmp_req=20 ttl=64 time=0.230 ms
4008 bytes from 10.83.23.28: icmp_req=21 ttl=64 time=0.234 ms
4008 bytes from 10.83.23.28: icmp_req=22 ttl=64 time=0.233 ms
4008 bytes from 10.83.23.28: icmp_req=23 ttl=64 time=0.235 ms
4008 bytes from 10.83.23.28: icmp_req=24 ttl=64 time=0.236 ms
4008 bytes from 10.83.23.28: icmp_req=25 ttl=64 time=0.234 ms
4008 bytes from 10.83.23.28: icmp_req=26 ttl=64 time=0.236 ms
4008 bytes from 10.83.23.28: icmp_req=27 ttl=64 time=0.237 ms
4008 bytes from 10.83.23.28: icmp_req=28 ttl=64 time=0.235 ms
4008 bytes from 10.83.23.28: icmp_req=29 ttl=64 time=0.235 ms
4008 bytes from 10.83.23.28: icmp_req=30 ttl=64 time=0.218 ms
4008 bytes from 10.83.23.28: icmp_req=31 ttl=64 time=0.220 ms
4008 bytes from 10.83.23.28: icmp_req=32 ttl=64 time=0.226 ms
4008 bytes from 10.83.23.28: icmp_req=33 ttl=64 time=0.254 ms
4008 bytes from 10.83.23.28: icmp_req=34 ttl=64 time=0.214 ms
4008 bytes from 10.83.23.28: icmp_req=35 ttl=64 time=0.214 ms
4008 bytes from 10.83.23.28: icmp_req=36 ttl=64 time=0.215 ms
4008 bytes from 10.83.23.28: icmp_req=37 ttl=64 time=0.214 ms
- Appuyez sur Ctrl + C afin d'arrêter la requête ping après une à deux minutes. Un résumé avec le RTT moyen s'affiche à la fin du résultat :
--- 10.83.23.28 ping statistics ---
159 packets transmitted, 159 received, 0% packet loss, time 4739ms
rtt min/avg/max/mdev = 0.195/0.236/0.283/0.022 ms
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