module4廣域網(wǎng)技術(shù)基本原理與實(shí)現(xiàn)hc fr配置

FR原理與配置前言幀中繼（framerelay)是一種面向連接的數(shù)據(jù)鏈路層技術(shù)。它主要用在公共或?qū)Ｓ镁W(wǎng)上的局域網(wǎng)互聯(lián)以及廣域網(wǎng)連接。幀中繼是一種簡(jiǎn)化X.25的廣域網(wǎng)協(xié)議。Page2培訓(xùn)目標(biāo)學(xué)完本課程后，您應(yīng)該能：理解FR協(xié)議工作原理掌握FR的配置Page3目錄幀中繼概述幀中繼配置Page4幀中繼概述幀中繼技術(shù)是在數(shù)據(jù)鏈路層用簡(jiǎn)化的方法傳送和交換數(shù)據(jù)單元的快速分組交換技術(shù)。幀中繼采用虛電路技術(shù)。虛電路FRLANLAN

LANLANPage5與OSI相對(duì)的幀中繼封裝幀中繼是在OSI參考模型第二層。應(yīng)用層表示層會(huì)話層傳輸層網(wǎng)絡(luò)層數(shù)據(jù)鏈路層物理層IP，IPXPage6FrameRelayFRIP

PacketFR幀中繼特點(diǎn)Page7數(shù)據(jù)信息以幀的形式進(jìn)行傳送。帶寬的復(fù)用和動(dòng)態(tài)分配。簡(jiǎn)化的X.25，在鏈路層完成統(tǒng)計(jì)復(fù)用、幀透明傳輸和錯(cuò)誤檢測(cè)，但不提供重傳操作。提供一套合理的帶寬管理和防止擁塞的機(jī)制。FR采用面向連接的交換技術(shù)，可以提供SVC和PVC業(yè)務(wù)。幀中繼網(wǎng)絡(luò)DTE

（Data

Terminal

Equipment）數(shù)據(jù)終端設(shè)備DCE（Data

Circuit-terminating

Equipment）數(shù)據(jù)電路終接設(shè)備

DLCI（Data

Link

Connection

Identifier）數(shù)據(jù)鏈路連接標(biāo)識(shí)FRDCEDCEDTELAN

LANDTEDCEPage8幀中繼接口類型DTE

（Data

Terminal

Equipment）數(shù)據(jù)終端設(shè)備DCE（Data

Circuit-terminating

Equipment）數(shù)據(jù)電路終接設(shè)備

NNI（Network-to-Network

Interface）網(wǎng)絡(luò)到網(wǎng)絡(luò)接口DCEDCETEDLAN

LANDTENNIPage9NNI

NNI

FRNNI虛電路FRDCEDCEDCE

DTELAN

LANDTE虛電路PVC（Permanent

Virtual

Circuit）永久虛電路

SVC（Switched

Virtual

Circuit）交換虛電路Page10幀中繼DLCI的分配FRDCEDCEDCE從幀中繼網(wǎng)絡(luò)服務(wù)商處得到分配的DLCI每個(gè)DLCI只有本地意義映射對(duì)端的網(wǎng)絡(luò)地址到DLCIDTELAN

LANDTEPage11LMI（Local

Management

Interface

）：本地管理接口

，用來(lái)監(jiān)控永久虛電路狀態(tài)。LMIANSIT1.617

Annex

DITU-T(CCITT)Q.933

Annex

ANonstandardPage12全連接網(wǎng)絡(luò)部分連接網(wǎng)絡(luò)幀中繼網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu)星型網(wǎng)絡(luò)Page13FrameRelay

switch幀中繼地址映射（MAP）是把對(duì)端設(shè)備的協(xié)議地址（IP或IPX地址）與本地到達(dá)對(duì)端設(shè)備的DLCI關(guān)聯(lián)起來(lái)。地址映射表可以由手工配置，也可以由Inverse

ARP協(xié)議動(dòng)態(tài)維護(hù)。172.16.11.2172.16.11.3DLCI

48Network

Address172.16.11.3TokenRing幀中繼地址映射Page14Inverse

ARP

自動(dòng)發(fā)現(xiàn)目的路由器的網(wǎng)絡(luò)地址，從而簡(jiǎn)化了幀中繼的配置Switch

通知DLCI

66RTA

向DCLI

66

通知IP

172.16.11.2RTB向DLCI

48通知IP

172.16.11.3Inverse

ARP協(xié)議FRDCEDCEDLCI

48172.16.11.2DLCI

66172.16.11.3RTARTBSwitch

通知DLCI

48Page15水平分割與幀中繼S0Router

BRouter

CRouter

DRouter

ADLCI16toCRouterB

通過(guò)RouterA

的串口0

轉(zhuǎn)發(fā)路由更新信息給RouterCPage16幀中繼子接口Router

BRouter

DRouter

ASubnet2Router

CPage17S0.1S0.2S0.3目錄幀中繼概述幀中繼配置Page18基本配置——?jiǎng)討B(tài)解析0RTBRTAFR

S0

S0

[RTA-Serial0]link-protocol

fr

ietf[RTA-Serial0]fr

interface-type

dce[RTA-Serial0]fr

dlci

100[RTA-Serial0]ip

address

10.1.1.1

30[RTA-Serial0]fr

inarp[RTA-Serial0]link-protocol

fr

ietf[RTB-Serial0]fr

interface-type

dte[RTB-Serial0]ip

address

10.1.1.2

30[RTB-Serial0]fr

inarpPage1910.1.1.2/3DTE10.1.1.1/30DCE驗(yàn)證配置結(jié)果S0S010.1.1.1/3010.1.1.2/30RTBRTAFR[RTA]display

fr

interfaceSerial0,

DCE,

physical

up,

protocol

up[RTB]display

interface

Serial

0Serial1

current

state

:

UPLine

protocol

current

state

:

UPDescription

:

HUAWEI,

Quidway

Series,

Serial0

InterfaceThe

Maximum

Transmit

Unit

is

1500

bytes,

Hold

timer

is

10(sec)Internet

Address

is

10.1.1.2/30Link

layer

protocol

is

FR

IETFLMI

DLCI

is

0,

LMI

type

is

Q.933a,

frame

relay

DTE……Page20基本配置——靜態(tài)解析0RTBRTA[RTA-Serial0]link-protocol

fr

ietf[RTA-Serial0]fr

interface-type

dce[RTA-Serial0]fr

dlci

100[RTB-Serial0]undo

fr

inarp[RTA-Serial0]ip

address

10.1.1.1

30[RTB-Serial0]fr

map

ip

10.1.1.2

100FR

S0

S0

[RTA-Serial0]link-protocol

fr

ietf[RTB-Serial0]fr

interface-type

dte[RTB-Serial0]ip

address

10.1.1.2

30[RTB-Serial0]undo

fr

inarp[RTB-Serial0]fr

map

ip

10.1.1.1

100Page2110.1.1.2/3DTE10.1.1.1/30DCE驗(yàn)證配置結(jié)果S0S00RTBRTAFR[RTB]display

fr

map-infoMap

Statistics

for

interface

Serial0

(DTE)DLCI

=

100,

IP

10.1.1.1,

Serial0create

time

=

2007/06/04

16:45:10,

status

=

ACTIVEencapsulation

=

ietf,

vlink

=

9Page2210.1.1.2/3DTE10.1.1.1/30DCE驗(yàn)證配置結(jié)果0RTBRTAFR

S0

S0

[RTB-Serial0]ping

10.1.1.1PING

10.1.1.1:

56 data

bytes,

press

CTRL_C

to

breakPage23Replyfrom10.1.1.1:bytes=56Sequence=1ttl=255time=31msReplyfrom10.1.1.1:bytes=56Sequence=2ttl=255time=31msReplyfrom10.1.1.1:bytes=56Sequence=3ttl=255time=31msReplyfrom10.1.1.1:bytes=56Sequence=4ttl=255time=31msReplyfrom10.1.1.1:bytes=56Sequence=5ttl=255time=31ms---

10.1.1.1

ping

statistics

---5

packet(s)

transmitted5

packet(s)

received0.00%

packet

loss10.1.1.2/3DTE10.1.1.1/30DCE配置用于幀中繼交換的靜態(tài)路由[RTA]interface

Serial0[RTA-Serial0]link-protocol

fr

ietf[RTA-Serial0]fr

interface-type

dte[RTA-Serial0]ip

address

10.1.1.1

300SS010.1.1.0/30RTBRTAFRRTCS2S2DLCI200S0S0

RTD10.1.1.2/30nniDLCI100dce

nnidtedteDLCI300dcePage24配置用于幀中繼交換的靜態(tài)路由[RTB]interface

Serial0[RTB-Serial0]link-protocol

fr

ietf[RTB-Serial0]fr

interface-type

dce[RTB-Serial0]fr

dlci

100[RTB]fr

switching[RTB-Serial0]fr

dlci-switch

100

interfaceSerial2dlci200[RTB]interface

serial2[RTB-Serial2]link-protocol

fr

ietf[RTB-Serial2]fr

interface-type

nni[RTB-Serial2]fr

dlci

200[RTB-Serial2]fr

dlci-switch

200

interfaceSerial0dlci100S000.1.1.1/30S1RTBRTAFRRTCS2S2DLCI200RTDS0S010.1.1.2/30nniDLCI100dce

nnidtedteDLCI300dcePage25配置用于幀中繼交換的靜態(tài)路由[RTC]interface

Serial2[RTC-Serial2]link-protocol

fr

ietf[RTC-Serial2]fr

interface-type

nni[RTC-Serial2]fr

dlci

200[RTC]fr

switching[RTC-Serial2]fr

dlci-switch

200

interfaceSerial0dlci300[RTC]interface

serial0[RTC-Serial0]link-protocol

fr

ietf[RTC-Serial0]fr

interface-type

dce[RTC-Serial0]fr

dlci

300[RTC-Serial0]fr

dlci-switch

300

interfaceSerial2dlci200S000.1.1.1/30S1RTBRTAFRRTCS2S2DLCI200S0S0

RTD10.1.1.2/30nniDLCI100dce

nnidtedteDLCI300dcePage26配置用于幀中繼交換的靜態(tài)路由[RTD]interface

Serial0[RTD-Serial0]link-protocol

fr

ietf[RTD-Serial0]fr

interface-type

dte[RTD-Serial0]ip

address

10.1.1.2

30S000.1.1.1/30S1RTBRTAFRRTCS2S2RTDS0S010.1.1.2/30DLCI200nni

nniDLCI100dcedteDLCI300dce

dtePage27驗(yàn)證配置結(jié)果[RTB]dis

fr

dlci-switchFrame

relay

switch

statistics>StatusActiveActiveInterface(Dlci)Serial0(100)Serial2(200)Interface(Dlci)Serial2(200)Serial0(100)S000.1.1.1/30S1RTBRTAFRRTCS2S2RTDS0S010.1.1.2/30DLCI200nni

nniDLCI100dcedteDLCI300dce

dtePage28驗(yàn)證配置結(jié)果[RTC]display

fr

dlci-switchFrame

relay

switch

statistics>StatusActiveActiveInterface(Dlci)Serial0(300)Serial2(200)Interface(Dlci)Serial2(200)Serial0(300)S000.1.1.1/30S1RTBRTAFRRTCS2S2RTDS0S010.1.1.2/30DLCI200nni

nniDLCI100dcedteDLCI300dce

dtePage29驗(yàn)證配置結(jié)果[RTA]dis

fr

map-infoMap

Statistics

for

interface

Serial0

(DTE)DLCI

=

100,

IP

INARP

10.1.1.2,

Serial0create

time

=

2007/06/04

17:34:59,

status

=

ACTIVEencapsulation

=

ietf,

vlink

=

20,

broadcast[RTD]dis

fr

map-infoMap

Statistics

for

interface

Serial0

(DTE)DLCI

=

300,

IP

INARP

10.1.1.1,

Serial0create

time

=

2007/06/04

17:34:59,

status

=

ACTIVEencapsulation

=

ietf,

vlink

=

1,

broadcastS000.1.1.1/30S1RTBRTAFRRTCS2S2RTDS0S010.1.1.2/30DLCI200nni

nniDLCI100dcedteDLCI300dce

dtePage30配置用于幀中繼交換的PVCdlci

100[RTB]fr

switching[RTB]fr

switch

1

interface

Serial0interface

Serial2

dlci

200[RTC]fr

switching[RTC]fr

switch

2

interface

Serial2

dlci

200interface

Serial0

dlci

300S000.1.1.1/30S1RTBRTAFRRTCS2S2RTDS0S010.1.1.2/30DLCI200nni

nniDLCI100dcedteDLCI300dce

dtePage31驗(yàn)證配置結(jié)果[RTB]display

fr

switch-table

allTotal

PVC

switch

records:1PVC-Name1Status Interface(Dlci)

<>

Interface(Dlci)Active

Serial0(100)

Serial2(200)<RTC>display

fr

switch-table

allTotal

PVC

switch

records:1PVC-Name2Status Interface(Dlci)

<>

Interface(Dlci)Active

Serial2(200)

Serial0(300)S000.1.1.1/30S1RTBRTAFRRTCS2S2RTDS0S010.1.1.2/30DLCI200nni

nniDLCI100dce