31. Routers build frame Relay Cloud
1. Frame Relay Parsing
1. It belongs to the connected two-layer network technology
DLCI (Data Link Connection Identification) identifies PVC between router and Frame Relay switch, valid locally
PVC (permanent virtual circuit)
LMI (Local Management Interface) A signaling standard between routers and frame relay switches that manages connections between devices and maintains their connection status.
5. MAP IP and DLCI mapping table
PVC (LMI) status
PVC (LMI) status Local to peer Active Normal Inactive Normal Abnormal
Delete Abnormal Unknown
3. Experimental topology
4. Experimental configuration
R1 configurations
interface Serial0/0
ip address 145.1.1.1 255.255.255.0
encapsulation frame-relay
frame-relay lmi-type cisco
no shut
R2 configuration
frame-relay switching
interface Tunnel2
tunnel source 23.1.1.2
tunnel destination 23.1.1.3
interface Serial0/0
encapsulation frame-relay
clock rate 64000
frame-relay lmi-type cisco
frame-relay intf-type dce
frame-relay route 104 interface Serial0/1 401
frame-relay route 105 interface Tunnel2 100
no shut
interface Serial0/1
encapsulation frame-relay
clock rate 64000
frame-relay lmi-type ansi
frame-relay intf-type dce
frame-relay route 401 interface Serial0/0 104
no shut
interface FastEthernet1/0
ip address 23.1.1.2 255.255.255.0
no shut
R3 configuration
frame-relay switching
interface Tunnel3
tunnel source 23.1.1.3
tunnel destination 23.1.1.2
interface Serial0/0
encapsulation frame-relay
clock rate 64000
frame-relay lmi-type q933a
frame-relay intf-type dce
frame-relay route 501 interface Tunnel3 100
no shut
interface FastEthernet1/0
ip address 23.1.1.3 255.255.255.0
no shut
R4 configuration
interface Serial0/0
ip address 145.1.1.4 255.255.255.0
encapsulation frame-relay
frame-relay map ip 145.1.1.5 401 broadcast
frame-relay lmi-type ansi
no shut
R5 configuration
interface Serial0/0
ip address 145.1.1.5 255.255.255.0
encapsulation frame-relay
frame-relay map ip 145.1.1.4 501 broadcast
frame-relay lmi-type q933a
no shut
5. View
