内存u盘mp3其它网络初级培训

配置X.25第八章完成本章的学习后，你可以进行如下任务:确定用于串行线路的X.25

封装类型为路由器的端口安排一个X.121

地址在路由器上用相应的命令把高层协议地址转化为X.121

地址校验路由器上的X.25

配置目的X.25

概述IPAppleTalkNovell

IPXBanyan

VINESXNSDECnetISO-CLNSApolloCompressed

TCPBridgingSSX.25的云X.25虚电路X.25局域网协议局域网协议SSX.25简介OSI

参考模型ApplicationPresentationSessionTransportNetworkData

LinkPhysical1237654X.25协议X.25LAPBPhysical123X.25协议栈X.25

DTE

通常是一个用户端的路由器或PADX.25DCE通常是一个公共数据网交换机或集线器公共数据网(PDN)X.25

DTEX.25

DTEX.25

DCESX.25

DCESX.25

DTE

和DCEData

Network

ID

CodeNetwork

Terminal

Number4

位十进制数10到11位十进制数X.25

(X.121)

地址格式地址由服务商提供X.25ARPX.25

MapETHDestinationMACSourceMACIPX.25SourceX.121DestinationX.121IPTokenRingX.25

地址解析X.25IP

NetworkIP

NetworkIP

DatagramX.25HeaderData-LinkFrame(LAPB)X.25

封装协议数据单元被封装在X.25的帧中可靠的进行传送交换式虚电路(SVCs)永久虚电路(PVCs)X.25虚电路每个X.25

端口最多可以配置4095条VCsNovellHost为一种特定的协议建立多条SVC可以改进吞吐量每个目的网段每个协议最多可以有8条SVC交换式虚电路的使用HostNovellTCP/IPAppleTalk单协议虚电路每个网络层协议都拥有自己的虚电路HostTCP/IPNovellAppleTalk多协议虚电路在同一SVC上跑多种协议最多可以在一条SVC上配置九种协议配置X.25端口配置–选择X.25

DTE

或DCE

封装–配置用于X.25

网络的参数–建立协议地址到X.121地址的影射–附加的配置X.25

配置任务SSSS定义封装类型设置端口地址Router(config-if)#encapsulation

x25encapsulation

x25

dceRouter(config-if)#x25

address

x.121-addressRouter(config-if)#X.25

配置建立上层协议地址到X.121地址的映射指定多少种协议通过一条SVC进行传输x25

map

protocol

address

x.121-address

[

options

]Router(config-if)#Router(config-if)#x25

map

protocol

address

[

protocol2

address2

]*

x.121-address[

options

]X.25

配置X.25

配置举例interface

serial

1encapsulation

x25x25

address

311082194567ip

address

10.60.8.1

255.255.248.0x25

map

ip

10.60.8.2

311082191234

broadcastCisco

Ainterface

serial

0encapsulation

x25x25

address

311082191234ip

address

10.60.8.2

255.255.248.0x25

map

ip

10.60.8.1

311082194567

broadcastCisco

BIP

Address:

10.60.8.2X.121

Address:

311082191234S1X.25IP

Address:

10.60.8.1X.121

Address:

311082194567Cisco

ACisco

BS0TokenRingSSSSX.25

附加配置任务配置用于X.25

的端口参数–虚电路–包的大小–窗口大小–窗口模值指定默认的接收包的大小指定默认的发出包的大小x25

ips

bytesRouter(config-if)#x25

ops

bytesRouter(config-if)#配置X.25

包大小定义模值配置窗口参数x25

win

packetsx25

wout

packetsRouter(config-if)#Router(config-if)#x25

modulo

modulus指定默认的无须确认的包的数量Router(config-if)#X.25

附加配置举例interface

serial

0encapsulation

x25x25

address

311082198756x25

ips

1024x25

ops

1024x25

win

7x25

wout

7S0SSX.25NetworkS

S把路由器配置为一个交换机X.25

packets

in

IP

datagrams路由器作为一个本地或远地交换机路由器通过TCP/IP网传递X.25

流量(XOT)X.25

DTEX.25

DTEX.25DCETCP/IPRoutingSX.25DCESX.25

本地和XOT

交换x25

route

[

#

position

]

x.121-address

[

cud

pattern

]interface

type-numberRouter(config)#X.25PADLocalSwitchingRemoteSwitchingIP

InternetworkX.25PADX.25PADRouter#

show

interfaces

serial

0Serial0

is

up,

line

protocol

is

upHardware

is

MK5025Internet

address

is

183.8.128.129,

subnet

mask

is

255.255.255.128

MTU

1500

bytes,

BW

56

Kbit,

DLY

20000

usec,

rely

255/255,

load

1/255Encapsulation

X25,

loopback

not

setLAPB

DCE,

state

CONNECT,

modulo

8,

k

7,

N1

12048,

N2

20T1

3000,

interface

outage

(partial

T3)

0,

T4

0VS

1,

VR

1,

Remote

VR

1,

Retransmissions

0IFRAMEs

1728559/1639143

RNRs

0/0

REJs

0/0

SABM/Es

3/2

FRMRs

0/0

DISCs

0/0X25

DCE,

address

311012345678,

state

R1,

modulo

8,

timer

0Defaults:

cisco

encapsulation,

idle

0,

nvc

1input/output

window

sizes

2/2,

packet

sizes

128/128Timers:

T10

60,

T11

180,

T12

60,

T13

60,

TH

0Channels: ing-only

none,

Two-way

1-1024,

Outgoing-only

noneRESTARTs

3/3

CALLs

244+235/266+262/0+0

DIAGs

0/0Last

input

0:00:00,

output

0:00:00,

output

hang

neverLast

clearing

of

"show

interface"

counters

neverOutput

queue

0/40,

0

drops;

input

queue

2/75,

0

dropsFive

minute

input

rate

0

bits/sec,

3

packets/secFive

minute

output

rate

0

bits/sec,

3

packets/sec3370943

packets

input,

113376062

bytes,

0

no

bufferReceived

1971

broadcasts,

0

runts,

0

giants57

input