IftheOSPFprotocolisusedtoconnectcustomeredge(CE)routerstoserviceprovideredge(PE)routersintheVPNbackbone,whichtwooptionsbestdescribetheuseofSHAMlinks?()

A.Asham-linkiscreatedbetweenanytwooVPNsitesthatbelongtothesameOSPFareaandsharean OSPFbackdoorlink B.Asham-linkisseenasanintra-arealinkbetweenPErouters,anOSPFadjacencyiscreatedand data baseisexchanged C.ASHAMlinkiscreatedbetweentwodirectlyconnectedPErouterssothatitispreferredoverthelow speedbackdoordoor D.ASHAMlinkispartofOSPFnetworkofMPLS-VPNprovider

时间:2023-08-30 08:16:42

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