Enterasys-networks 9034385 Uživatelský manuál stáhnout pdf (Strana 95)

Inline NAC Design Procedures

Enterasys NAC Design Guide 5-31

Figure 5-9 Layer 2 NAC Controller Redundancy

ForaLayer3NACController,redundancyisachievedbyimplementingredundantLayer3

NACControllersonadjacent,butseparatenetworksasshowninFigure 5‐10.TheNAC

Controllersmustbeindifferentnetworks,andadynamicroutingprotocolsuchasOSPFor

RIPmustbeconfiguredbetweenthe

upstreamanddownstreamroutersthatarepositionedon

eithersideoftheNACControllers.RedundantLayer3NACControllersareactive‐active,in

thattrafficfromadownstreamroutermaypassthrougheitheroftheredundantLayer3NAC

Controllerswithequalcostmultipathforwardingimplementedfortheconfigureddynamic

routing

protocol.IfNACController#1(PEPorNACEngine)stopsforwardingtraffic,the

networkwillautomaticallyconvergeusingtheconfiguredroutingprotocoltoforwardtraffic

throughNACController#2.NotethattheNACControllersdonotroutepacketsanddonot

participateinthelayer3topology.

Figure 5-10 Layer 3 NAC Controller Redundancy

1 2 ... 90 91 92 93 94 95 96 97 98

Žádné komentáře

Enterasys-networks 9034385 Uživatelský manuál Strana 95