module4广域网技术基本原理与实现hc fr配置

FR原理与配置前言帧中继（framerelay)是一种面向连接的数据链路层技术。它主要用在公共或专用网上的局域网互联以及广域网连接。帧中继是一种简化X.25的广域网协议。Page2培训目标学完本课程后，您应该能：理解FR协议工作原理掌握FR的配置Page3目录帧中继概述帧中继配置Page4帧中继概述帧中继技术是在数据链路层用简化的方法传送和交换数据单元的快速分组交换技术。帧中继采用虚电路技术。虚电路FRLANLAN

LANLANPage5与OSI相对的帧中继封装帧中继是在OSI参考模型第二层。应用层表示层会话层传输层网络层数据链路层物理层IP，IPXPage6FrameRelayFRIP

PacketFR帧中继特点Page7数据信息以帧的形式进行传送。带宽的复用和动态分配。简化的X.25，在链路层完成统计复用、帧透明传输和错误检测，但不提供重传操作。提供一套合理的带宽管理和防止拥塞的机制。FR采用面向连接的交换技术，可以提供SVC和PVC业务。帧中继网络DTE

（Data

Terminal

Equipment）数据终端设备DCE（Data

Circuit-terminating

Equipment）数据电路终接设备

DLCI（Data

Link

Connection

Identifier）数据链路连接标识FRDCEDCEDTELAN

LANDTEDCEPage8帧中继接口类型DTE

（Data

Terminal

Equipment）数据终端设备DCE（Data

Circuit-terminating

Equipment）数据电路终接设备

NNI（Network-to-Network

Interface）网络到网络接口DCEDCETEDLAN

LANDTENNIPage9NNI

NNI

FRNNI虚电路FRDCEDCEDCE

DTELAN

LANDTE虚电路PVC（Permanent

Virtual

Circuit）永久虚电路

SVC（Switched

Virtual

Circuit）交换虚电路Page10帧中继DLCI的分配FRDCEDCEDCE从帧中继网络服务商处得到分配的DLCI每个DLCI只有本地意义映射对端的网络地址到DLCIDTELAN

LANDTEPage11LMI（Local

Management

Interface

）：本地管理接口

，用来监控永久虚电路状态。LMIANSIT1.617

Annex

DITU-T(CCITT)Q.933

Annex

ANonstandardPage12全连接网络部分连接网络帧中继网络拓扑结构星型网络Page13FrameRelay

switch帧中继地址映射（MAP）是把对端设备的协议地址（IP或IPX地址）与本地到达对端设备的DLCI关联起来。地址映射表可以由手工配置，也可以由Inverse

ARP协议动态维护。172.16.11.2172.16.11.3DLCI

48Network

Address172.16.11.3TokenRing帧中继地址映射Page14Inverse

ARP

自动发现目的路由器的网络地址，从而简化了帧中继的配置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协议FRDCEDCEDLCI

48172.16.11.2DLCI

66172.16.11.3RTARTBSwitch

通知DLCI

48Page15水平分割与帧中继S0Router

BRouter

CRouter

DRouter

ADLCI16toCRouterB

通过RouterA

的串口0

转发路由更新信息给RouterCPage16帧中继子接口Router

BRouter

DRouter

ASubnet2Router

CPage17S0.1S0.2S0.3目录帧中继概述帧中继配置Page18基本配置——动态解析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验证配置结果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——静态解析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验证配置结果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验证配置结果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配置用于帧中继交换的静态路由[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配置用于帧中继交换的静态路由[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配置用于帧中继交换的静态路由[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配置用于帧中继交换的静态路由[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验证配置结果[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验证配置结果[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验证配置结果[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配置用于帧中继交换的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验证配置结果[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