in molti esercizi infatti, si ha bisogno di creare un cloud, ma forse i nuovi studenti non sanno che è sufficiente un router per fare da switch frame-relay e permettervi di effettuare i laboratori con molta facilità..
iniziamo con la prima e più classica topologia...
qui ho usato un cisco 2610 con 2 WIC 2-T (quindi 4 smart serial in totale) come switch frame-relay.
la topologia consite in un router che è l'hub, ovvero quello della sede principale, che si connette a 3 router diversi ognuno con un proprio PVC, in quelle che possiamo immaginare essere sedi remote (i branch routers)
ecco un immagine della topologia, poi la configurazione del router all'interno del cloud.

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Codice: Seleziona tutto
!
version 12.1
no service single-slot-reload-enable
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname FRAME_RELAY_SWITCH
!
!
username USERNAME privilege 15 password 7 047702081A39795D0C0B5D40
!
!
!
!
ip subnet-zero
ip domain-name test.lab
!
frame-relay switching
!
!
!
!
!
!
!
interface Ethernet0/0
no ip address
shutdown
!
interface Serial0/0
no ip address
encapsulation frame-relay
logging event subif-link-status
logging event dlci-status-change
no fair-queue
clockrate 56000
no frame-relay inverse-arp
frame-relay intf-type dce
frame-relay route 122 interface Serial0/1 221
frame-relay route 123 interface Serial0/2 321
frame-relay route 124 interface Serial0/3 421
!
interface Serial0/1
no ip address
encapsulation frame-relay
logging event subif-link-status
logging event dlci-status-change
clockrate 56000
no frame-relay inverse-arp
frame-relay intf-type dce
frame-relay route 221 interface Serial0/0 122
!
interface Serial0/2
no ip address
encapsulation frame-relay
logging event subif-link-status
logging event dlci-status-change
clockrate 56000
no frame-relay inverse-arp
frame-relay intf-type dce
frame-relay route 321 interface Serial0/0 123
!
interface Serial0/3
no ip address
encapsulation frame-relay
logging event subif-link-status
logging event dlci-status-change
clockrate 56000
no frame-relay inverse-arp
frame-relay intf-type dce
frame-relay route 421 interface Serial0/0 124
!
ip classless
ip http server
!
!
!
line con 0
logging synchronous
login local
line aux 0
line vty 0 4
login local
!
end