5 frame relay

8/6/2019 5 Frame Relay

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PART 5:PART 5: GiiGii thiuthiu vv cngcng nghnghFrame RelayFrame Relay


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TngTng quanquan mngmng Frame RelayFrame Relay

Kt ni c thc hin bi nhng mch o.

Hng kt ni dch v


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KK hiuhiu caca Frame RelayFrame Relay


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Frame Relay StackFrame Relay Stack

OSI Reference Model Frame Relay

Physical

Presentation

Session

Transport

Network

Data Link

Application

EIA/TIA-232,EIA/TIA-449, V.35,X.21, EIA/TIA-530

Frame Relay

IP/IPX/AppleTalk, etc.


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Mc nh ca Frame Relay : NBMA

ChnChn lala mm hnhhnh Frame relayFrame relay


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GiiGii quytquyt vnvn ktkt nini vivi NBMANBMA

Split horizon c th gy mt vi s c trong mi trng NBMA.

Gii php: dng subinterfaces

Mt cng vt l duy nht kt ni vi nhiu cng sub.


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LMI nhn DLCI ni b t Frame Relay switch.

Inverse ARP gn DLCI ni b n lp mng ca router ng xa.

CC chch MapMap aa chch Frame RelayFrame Relay


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TnTn hiuhiu tt Frame RelayFrame Relay

Cisco cung cp 3 chun LMI: Cisco

ANSI T1.617 Annex D

ITU-T Q.933 Annex A


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CcCc bcbc hothot ngng caca Inverse ARPInverse ARP

vv LMILMI


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CcCc bcbc hothot ngng caca Inverse ARPInverse ARP

vv LMILMI


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CuCu hnhhnh cc bnbn Frame RelayFrame Relay


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CuCu hnhhnh mapmap tnhtnh Frame RelayFrame Relay

Cu hnh map tnh Frame Relay khi: Mt lng ging khng cung cp Inverse ARP

Mun iu khin lung d liu broadcast bng qua mt PVC

Mun c nhng dng ng gi Frame Relay khc nhau i qua PVCs


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CuCu hnhhnh Frame RelayFrame Relay SubinterfacesSubinterfaces

Point-to-pointx Subinterfaces hot ng nh ng thu ring.x Mi point-to-point subinterface i hi subnet ca n.x Point-to-point c s dng trong m hnh hub-and-spoke.

Multipointx Subinterfaces hot ng nh mng NBMA, v th n khng th

gii quyt cc vn v split-horizon.x Multipoint c th tit kim khng gian a ch bi v n dng mt

subnet n.x

Multipoint c dng trong m hnh mng partial-mesh v full-mesh.


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CuCu hnhhnh Frame Relay PointFrame Relay Point--toto--PointPoint

SubinterfacesSubinterfaces


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CuCu hnhhnh Frame Relay MultipointFrame Relay Multipoint

SubinterfacesSubinterfaces


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XcXc minhminh hothot ngng caca Frame RelayFrame Relay

RouterX# show interfaces type number

Hin thng tin v Frame Relay DLCIs v LMI

RouterX# show interfaces s0Serial0 is up, line protocol is up

Hardware is HD64570Internet address is 10.140.1.2/24MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255Encapsulation FRAME-RELAY, loopback not set, keepalive set (10 sec)LMI enq sent 19, LMI stat recvd 20, LMI upd recvd 0, DTE LMI upLMI enq recvd 0, LMI stat sent 0, LMI upd sent 0LMI DLCI 1023 LMI type is CISCO frame relay DTEFR SVC disabled, LAPF state down

Broadcast queue 0/64, broadcasts sent/dropped 8/0, interface broadcasts 5Last input 00:00:02, output 00:00:02, output hang neverLast clearing of "show interface" counters neverQueueing strategy: fifoOutput queue 0/40, 0 drops; input queue 0/75, 0 drops


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RouterX# show frame-relay lmi [type number]

Hin thng tin thng k ca LMI

RouterX# show frame-relay lmi

LMI Statistics for interface Serial0 (Frame Relay DTE) LMI TYPE = CISCOInvalid Unnumbered info 0 Invalid Prot Disc 0Invalid dummy Call Ref 0 Invalid Msg Type 0Invalid Status Message 0 Invalid Lock Shift 0Invalid Information ID 0 Invalid Report IE Len 0

Invalid Report Request 0 Invalid Keep IE Len 0Num Status Enq. Sent 113100 Num Status msgs Rcvd 113100Num Update Status Rcvd 0 Num Status Timeouts 0


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Hin thng tin debug ca LMI


RouterX# debug frame-relay lmiFrame Relay LMI debugging is onDisplaying all Frame Relay LMI dataRouterX#1w2d: Serial0(out): StEnq, myseq 140, yourseen 139, DTE up1w2d: datagramstart = 0xE008EC, datagramsize = 131w2d: FR encap = 0xFCF10309

1w2d: 00 75 01 01 01 03 02 8C 8B1w2d:1w2d: Serial0(in): Status, myseq 1401w2d: RT IE 1, length 1, type 11w2d: KA IE 3, length 2, yourseq 140, myseq 1401w2d: Serial0(out): StEnq, myseq 141, yourseen 140, DTE up1w2d: datagramstart = 0xE008EC, datagramsize = 131w2d: FR encap = 0xFCF10309

1w2d: 00 75 01 01 01 03 02 8D 8C1w2d:1w2d: Serial0(in): Status, myseq 1421w2d: RT IE 1, length 1, type 01w2d: KA IE 3, length 2, yourseq 142, myseq 1421w2d: PVC IE 0x7 , length 0x6 , dlci 100, status 0x2 , bw 0


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RouterX# show frame-relay pvc [type number[dlci]]

Hin thng k thng tin PVC

RouterX# 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 8398out bytes 1198 dropped pkts 0 in FECN pkts 0in BECN pkts 0 out FECN pkts 0 out BECN pkts 0in DE pkts 0 out DE pkts 0out bcast pkts 10 out bcast bytes 1198pvc create time 00:03:46, last time pvc status changed 00:03:47


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RouterX# clear frame-relay-inarp

RouterX# show frame-relay map

Xa ng Frame Relay map, c to bng Inverse ARP

Hin cc entry hin ti ca Frame Relay

RouterX# show frame-relay map

Serial0 (up): ip 10.140.1.1 dlci 100(0x64,0x1840), dynamic,broadcast,, status defined, activeRouterX# clear frame-relay-inarpRouterX# show frame mapRouterX#


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TngTng ktkt

Frame Relay PVCs c xc nhn vi DLCIs, v tnhtrng ca PVCs c bo co trn giao thc LMI.

Frame Relay point-to-point subinterfaces i hi mt

subnet cho mi PVC, v multipoint subinterfaces chia xmt subnet c nht vi lng ging frame relay. hin thng tin kt ni vi nh cung cp dch v Frame

Relay, dng lnh show frame-relay lmi . hin thngtin kt ni vi lng ging Frame Relay, dng lnh show

frame-relay pvc v show frame-relay map.


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5 frame relay

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