CCNA 新版（英文）D20S08L02.pps

© 2002, Cisco Systems, Inc. All rights reserved.
© 2002, Cisco Systems, Inc. All rights reserved.
2
Configuring Frame Relay
Objectives
pleting this lesson, you will be able to:
Use Cisco mands to configure a Frame work, given a functioning router
Use mands to identify anomalies in the Frame Relay PVCs, given a functioning router and an operational Frame work
Use mands to identify events and anomalies in the Frame Relay PVCs, given a functioning router and an operational Frame work
Configuring Basic Frame Relay
Configuring a Static Frame Relay Map
Configuring Subinterfaces
Point-to-point
Subinterfaces act like leased lines.
Each point-to-point subinterface requires its own .
Point-to-point is applicable to hub and spoke topologies.
Multipoint
Subinterfaces act like works, so they do not resolve the split-horizon issues.
Multipoint can save address space because it uses a single .
Multipoint is applicable to partial mesh and full mesh topologies.
Configuring Point-to-Point Subinterfaces
Multipoint Subinterfaces Configuration Example
Verifying Frame Relay Operation
Router#clear frame-relay-inarp
Clears dynamically created Frame Relay maps, created by using Inverse ARP
Router#show interfaces type number
Displays information about Frame Relay DLCIs and the LMI
Router#show frame-relay lmi [type number]
Displays LMI statistics
Router#show frame-relay map
Displays the current Frame Relay map entries
Router#show frame-relay pvc [type number [dlci]]
Displays PVC statistics
Router#show frame-relay traffic
Displays Frame Relay traffic statistics
show interfaces Example
Displays line, protocol, DLCI, and LMI information
Router#show interfaces s0
Serial0 is up, line protocol is up
Hardware is HD64570
address is
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation FRAME-RELAY, loopback not set, keepalive set (10 sec)
LMI enq sent 19, LMI stat recvd 20, LMI upd recvd 0, DTE LMI up
LMI enq recvd 0, LM