Manuel d'utilisation / d'entretien du produit 6 MPLS du fabricant IBM
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Special ized Model s User Gui de 6 MPLS Mo del Use r Guide Modeler/ Release 10.0 SPM-6-1 6 MPLS Model User G uide Multi-Prot ocol Label Switching (MPLS) is a multi-layer swi tching technol ogy that uses label s to det ermine how pack ets are for warded through a network.
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide SPM-6-2 Model er/Relea se 10.0 • MPLS models are implemented based on inf ormation av ailable fr om the following sour ces.
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide Modeler/ Release 10.0 SPM-6-3 Node Models The MPLS model suite supports workst ation, server, ro uter, and link model s from the s tandard model l ibrary.
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide SPM-6-4 Model er/Relea se 10.0 Figure 6-2 Specifying FEC Attr ibutes The FEC Details Table helps define the FEC thro ugh a set of match rules, which are combinations of TCP, UDP, and IP header fields.
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide Modeler/ Release 10.0 SPM-6-5 • LSP Specificati on Fil e This attri bute indicates whethe r the network LSPs should be config ured according to the text file specified. You can update the text fi le by clicking OK in the LSP Browser .
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide SPM-6-6 Model er/Relea se 10.0 Figure 6-5 Mapping EXP Bits to Dro p Pr ecedence and PHB Router Attributes Some of the importa nt MPLS Parameters attr ibutes set on rou ters are described below.
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide Modeler/ Release 10.0 SPM-6-7 When an unlabeled packet arr i ves at an ingress LER, the followi ng sequenc e occurs to deter mine the correct la bel for the pack et: 1) The TE binding is selec ted based on the packet FEC and the incoming inte rface.
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide SPM-6-8 Model er/Relea se 10.0 Figure 6-7 Configuring LDP Par ameters Simulation Attributes The followi ng simulation att ributes are available (Confi gure/Run Discre te Event Simulation dial og box) when using the MPLS model suite.
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide Modeler/ Release 10.0 SPM-6-9 LSP Attributes Some of the important LSP att ributes are descri bed below. Most of these attri butes can also be conf igured i n the LSP browser, which is descr ibed in the next sectio n.
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide SPM-6-10 Mo deler/Relea se 10. 0 Figure 6-10 Recovery Parameters Configuration • Setup Parameter s —specifies the dur ati on of the LSP.
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide Modeler/ Release 10.0 SPM-6-11 LSP Browser After y ou create the LSPs in the network, you may want to edit or view t he default settings. You do this in the LSP browser, which you can ac cess from the Protocols > MPLS > Browse/Edit LSP I nformation.
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide SPM-6-12 Mo deler/Relea se 10. 0 Available Stat istics To analyze MPLS performance, you can c ollect pa th stati stics on end- to-end delay, u tilizati on, and the amount of tr affic on the LSP.
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide Modeler/ Release 10.0 SPM-6-13 Configuring MPLS in a Network Configuri ng MPLS in a network is a three-st ep process.
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide SPM-6-14 Mo deler/Relea se 10. 0 2 If you hav e not assig ned IP add resses to all conn ected int erfaces in the networ k, click the “Perform Auto-Assig nment” bu tton. Otherwi se, click th e “Skip Auto-Ass ignment” button.
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide Modeler/ Release 10.0 SPM-6-15 Constraine d OSPF (CSPF) is us ed to impl ement constra int-based routing of LSPs. You can configure dynamic LSPs t o use const raint-based r outing i n the LSP’s TE Paramet ers attribute by sett ing the Bandwidth, Delay, and Hop Count constrai nts.
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide SPM-6-16 Mo deler/Relea se 10. 0 Creating FECs a nd Traffic Trunks The traffic engi neering bindin gs that govern how packets are labele d and forwarded in a network use FECs and traffic tr unks to classif y packets.
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide Modeler/ Release 10.0 SPM-6-17 Creating TE Bindings on LERs After you create the LSPs, FECs, and traffic tr unks, you can create TE bindings that govern whic h packets are sent to which LSPs. You do this in the LER’s MPLS Paramete rs ➘ Traffic Mapping Confi guration at tribute.
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide SPM-6-18 Mo deler/Relea se 10. 0 Exporting LSP Configuration Details for Use in Other Scenarios You can reu se LSPs that you have confi gured elsewher e by ex port ing t he LSP configur ation details to an ASCII fi l e and using this file to cre ate LSPs in the network.
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide Modeler/ Release 10.0 SPM-6-19 Applying QoS to an MPLS Network Model Differe ntial Services (Di ff Serv) extensions can be used to appl y quality-of -service constraints to yo ur MPLS networ k model.
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide SPM-6-20 Mo deler/Relea se 10. 0 If you cha nge the queuing s cheme later, make su re you reset the queuing pr ofile because the order of t hese steps is importa nt. Figure 6 -15 Configuring QoS on an LER Always se t the Que uing Scheme b efore setting the Queu ing Profile .
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide Modeler/ Release 10.0 SPM-6-21 MPLS Menu Operations The Protocols > MPLS menu enables you to configure, edi t, and display MPLS features i n the networ k topology. With the MPLS menu operations , you to streamli ne the MPL S confi guration process.
Special ized Model s User Gui de 6 MPLS Mo del Use r Guide SPM-6-22 Mo deler/Relea se 10. 0 Information for OPNET Modeler Users The rest of this document contain s information fo r mo del devel opers (such as OPNET Modeler use rs).
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté IBM 6 MPLS c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du IBM 6 MPLS - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation IBM 6 MPLS, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le IBM 6 MPLS va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le IBM 6 MPLS, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du IBM 6 MPLS.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le IBM 6 MPLS. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei IBM 6 MPLS ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
