© 2006 Cisco Systems, Inc. All rights reserved. ICND v2.36-1 Establishing Serial Point-To-Point Connections Configuring Frame Relay. - презентация

1 © 2006 Cisco Systems, Inc. All rights reserved. ICND v Establishing Serial Point-To-Point Connections Configuring Frame Relay

2 © 2006 Cisco Systems, Inc. All rights reserved. ICND v Outline Overview Basic Frame Relay Network Configuration Static Frame Relay Map Configuration Frame Relay Subinterface Configuration Basic Frame Relay Operation Verification Summary

3 © 2006 Cisco Systems, Inc. All rights reserved. ICND v Configuring Basic Frame Relay

4 © 2006 Cisco Systems, Inc. All rights reserved. ICND v Configuring a Static Frame Relay Map

5 © 2006 Cisco Systems, Inc. All rights reserved. ICND v Configuring Subinterfaces Point-to-point –Subinterfaces act like leased lines. –Each point-to-point subinterface requires its own subnet. –Point-to-point is applicable to hub-and-spoke topologies. Multipoint –Subinterfaces act like NBMA networks, so they do not resolve the split horizon issues. –Multipoint can save address space because it uses a single subnet. –Multipoint is applicable to partial mesh and full mesh topologies.

6 © 2006 Cisco Systems, Inc. All rights reserved. ICND v Configuring Point-to-Point Subinterfaces

7 © 2006 Cisco Systems, Inc. All rights reserved. ICND v Multipoint Subinterfaces Configuration Example

8 © 2006 Cisco Systems, Inc. All rights reserved. ICND v Verifying Frame Relay Operation Router# show interfaces s0 Serial0 is up, line protocol is up Hardware is HD64570 Internet address is /24 MTU 1500 bytes, BW 1544 Kbit, DLY 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, LMI stat sent 0, LMI upd sent 0 LMI DLCI 1023 LMI type is CISCO frame relay DTE FR SVC disabled, LAPF state down Broadcast queue 0/64, broadcasts sent/dropped 8/0, interface broadcasts 5 Last input 00:00:02, output 00:00:02, output hang never Last clearing of "show interface" counters never Queueing strategy: fifo Output queue 0/40, 0 drops; input queue 0/75, 0 drops Router# show interfaces type number Displays information about Frame Relay DLCIs and the LMI

9 © 2006 Cisco Systems, Inc. All rights reserved. ICND v Verifying Frame Relay Operation (Cont.) Router# show frame-relay traffic Frame Relay statistics: ARP requests sent 14, ARP replies sent 0 ARP request recvd 0, ARP replies recvd 10 Router# show frame-relay traffic Displays Frame Relay traffic statistics

10 © 2006 Cisco Systems, Inc. All rights reserved. ICND v Router# show frame-relay lmi LMI Statistics for interface Serial0 (Frame Relay DTE) LMI TYPE = CISCO Invalid Unnumbered info 0 Invalid Prot Disc 0 Invalid dummy Call Ref 0 Invalid Msg Type 0 Invalid Status Message 0 Invalid Lock Shift 0 Invalid Information ID 0 Invalid Report IE Len 0 Invalid Report Request 0 Invalid Keep IE Len 0 Num Status Enq. Sent Num Status msgs Rcvd Num Update Status Rcvd 0 Num Status Timeouts 0 Verifying Frame Relay Operation (Cont.) Router# show frame-relay lmi [type number] Displays LMI statistics

11 © 2006 Cisco Systems, Inc. All rights reserved. ICND v Verifying Frame Relay Operation (Cont.) Router# show frame-relay pvc 100 PVC Statistics for interface Serial0 (Frame Relay DTE) DLCI = 100, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0 input pkts 28 output pkts 10 in bytes 8398 out bytes 1198 dropped pkts 0 in FECN pkts 0 in BECN pkts 0 out FECN pkts 0 out BECN pkts 0 in DE pkts 0 out DE pkts 0 out bcast pkts 10 out bcast bytes 1198 pvc create time 00:03:46, last time pvc status changed 00:03:47 Router# show frame-relay pvc [type number [dlci]] Displays PVC statistics

12 © 2006 Cisco Systems, Inc. All rights reserved. ICND v Verifying Frame Relay Operation (Cont.) Router# show frame-relay map Serial0 (up): ip dlci 100(0x64,0x1840), dynamic, broadcast,, status defined, active Router# clear frame-relay-inarp Router# show frame map Router# Router# clear frame-relay-inarp Router# show frame-relay map Clears dynamically created Frame Relay maps, created by using Inverse ARP Displays the current Frame Relay map entries

13 © 2006 Cisco Systems, Inc. All rights reserved. ICND v Displays LMI debug information Router# debug frame-relay lmi Frame Relay LMI debugging is on Displaying all Frame Relay LMI data Router# 1w2d: Serial0(out): StEnq, myseq 140, yourseen 139, DTE up 1w2d: datagramstart = 0xE008EC, datagramsize = 13 1w2d: FR encap = 0xFCF w2d: C 8B 1w2d: 1w2d: Serial0(in): Status, myseq 140 1w2d: RT IE 1, length 1, type 1 1w2d: KA IE 3, length 2, yourseq 140, myseq 140 1w2d: Serial0(out): StEnq, myseq 141, yourseen 140, DTE up 1w2d: datagramstart = 0xE008EC, datagramsize = 13 1w2d: FR encap = 0xFCF w2d: D 8C 1w2d: 1w2d: Serial0(in): Status, myseq 142 1w2d: RT IE 1, length 1, type 0 1w2d: KA IE 3, length 2, yourseq 142, myseq 142 1w2d: PVC IE 0x7, length 0x6, dlci 100, status 0x2, bw 0 Troubleshooting Basic Frame Relay Operations

14 © 2006 Cisco Systems, Inc. All rights reserved. ICND v Summary A basic Frame Relay configuration assumes that there are one or more physical interfaces, and that LMI and Inverse ARP are running on the remote routers. In this type of environment, the LMI notifies the router about the available DLCIs. When the remote router does not support Inverse ARP or when you want to control routed broadcast traffic, you must statically define the address-to-DLCI table. You can configure Frame Relay subinterfaces in either point-to-point or multipoint mode. After you configure Frame Relay, you can verify that the connections are active using the available show commands. The debug frame-relay lmi command can be used to determine whether the router and the Frame Relay switch are sending and receiving LMI packets properly. The show interfaces serial command can be used to troubleshoot some common Frame Relay network problems.

15 © 2006 Cisco Systems, Inc. All rights reserved. ICND v