Configuring a Frame Relay Switch Lab A
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Objective
In this lab, you will configure a frame relay switch and network. Once your configuration is complete, you will use debugging and show commands to view your configuration.
Hardware Requirements
• One router with two serial ports
• Two routers with one serial port and one Ethernet port
• Three back to back DTE/DCE serial cables
• IOS version 12.x or later
• A PC running a terminal emulation program
• Cisco console kit
Setup
• Configure the cabling as shown in the network diagram
• If the routers have a startup-config, erase it and perform a reload of the routers.
RouterA
Router>en
Router#config t
Router(config)#hostname RouterA
RouterA(config)#enable password cisco
RouterA(config)#int s0
RouterA(config-if)#ip address 192.168.1.1 255.255.255.0
RouterA(config-if)#no shut
RouterA(config-if)#encapsulation frame-relay
RouterA(config-if)#frame-relay lmi-type ansi
RouterA(config-if)#router rip
RouterA(config-router)#network 192.168.1.0
RouterA(config-router)#no ip classless
RouterA(config)#line vty 0 4
RouterA(config-line)#login
RouterA(config-line)#password cisco
RouterB
Router>en
Router#config t
Router(config)#hostname RouterB
RouterA(config)#enable password cisco
RouterA(config)#int s0
RouterA(config-if)#ip address 192.168.1.2 255.255.255.0
RouterA(config-if)#no shut
RouterA(config-if)#encap
RouterA(config-if)#encapsulation <type -> frame
RouterA(config-if)#encapsulation frame-relay
RouterA(config-if)#frame-relay lmi-type ansi
RouterA(config-if)#router rip
RouterA(config-router)#network 192.168.1.0
RouterA(config-router)#
RouterA(config-router)#no ip classless
RouterA(config)#line vty 0 4
RouterA(config-line)#login
RouterA(config-line)#password cisco
FrameSwitch (serial0)
Router>en
Router#config t
router(config)#hostname FrameSwitch
FrameSwitch(config)#
FrameSwitch(config)#frame-relay switching
FrameSwitch(config)#
FrameSwitch(config)#int s0
FrameSwitch(config-if)#no ip address
FrameSwitch(config-if)#no shut
FrameSwitch(config-if)#encapsulation frame-relay
FrameSwitch(config-if)#clockrate 64000
FrameSwitch(config-if)#frame-relay lmi-type ansi
FrameSwitch(config-if)#frame-relay intf-type dce
FrameSwitch(config-if)#frame-relay route 100 interface serial1 101
FrameSwitch(config)#int s1
FrameSwitch(config-if)#no ip address
FrameSwitch(config-if)#no shut
FrameSwitch(config-if)#encapsulation frame-relay
FrameSwitch(config-if)#clockrate 64000
FrameSwitch(config-if)#frame-relay lmi-type ansi
FrameSwitch(config-if)#frame-relay intf-type dce
FrameSwitch(config-if)#frame-relay route 101 interface serial0 100
FYI: The PVCs (Permanent Virtual Circuits) are defined using the frame-relay route command. When we configure the router Frameswitch with the command frame-relay route 100 interface serial1 101 on serial0, we’re saying any package identified with DLCI 100, destined for DLCI 101, switch over to serial1 and when we configure the serial1 with the frame-relay route command, frame-relay route 101 interface serial0 100, that creates the PVC.
Frame Relay Monitoring
Router# show interface or show interface serial are the most common command s which show a wide variety of information including showing you the DLCI used for LMI. When monitoring Frame Relay information on the router, a number of items are typically monitored including DLCI and LMI.
Router# debug frame-relay LMI command that you would use to monitor LMI information
Frame Relay Troubleshooting Commands
If a Frame-Relay DLCI attains a state other than “active” meaning inactive or deleted, you can check the Frame-Relay configuration to make sure its configuration matches the configuration of the router acting as the Frame-Relay DTE device.
Router# show frame-relay pvc – can be used to verify that the Frame-Relay PVCs are active and operational
Router# show frame-relay route – can be used to get a listing of the status of all the PVC’s
Router# show frame-relay map – can be used to verify that inverse ARP has successfully mapped remote network layer addresses to the appropriate DLCI.