hcnphcdp中文培訓(xùn)材料0102帶備注mstp原理與配置

MSTP原理與配置前言本課程介紹MSTP（多生成樹協(xié)議）的原理與配置。MSTP用于解決啟用VLAN的交換網(wǎng)絡(luò)中的環(huán)路問題。Page1培訓(xùn)目標(biāo)學(xué)完本課程后，您應(yīng)該能：描述MSTP的基本概念描述MSTP高級(jí)配置Page2目錄MSTP基本概念MSTP高級(jí)配置Page3目錄MSTP基本概念MSTP高級(jí)配置Page4單個(gè)生成樹的弊端－部分VLAN路徑不通LANALANB5700-A5700-B3700VLAN2VLAN3RootDDDDDRRDiscardingAVLAN2此路徑被斷開，VLAN3路徑不通VLAN3VLAN2通過所有VLANPage5單個(gè)生成樹的弊端－無法使用流量分擔(dān)LANALANBVLAN2VLAN3RootDDDDDRRDiscardingAVLAN2此路徑被斷開，不能流量分擔(dān)VLAN3Page65700-A5700-B3700單個(gè)生成樹的弊端－次優(yōu)二層路徑LANALANBVLAN2VLAN3RootDDDDDRRDiscardingAVLAN2創(chuàng)建VLAN3的三層接口VLAN3創(chuàng)建VLAN2的三層接口VLAN3路徑次優(yōu)Page75700-A5700-B3700MSTP基本概念－多生成樹實(shí)例（MST

Instance）LANALANBVLAN2VLAN3DDDDRRInstance

2的根交換機(jī)Instance

1：包含VLAN2Instance

2：包含VLAN3Instance

1的根交換機(jī)Page8DRAADDRD5700-A5700-B3700MST配置表（MST

Configuration

Table）0x00002

Bytes2

Bytes0x00004096個(gè)兩字節(jié)元素此數(shù)值表示VLAN

1所映射到的

MST

Instance的MSTID此數(shù)值表示VLAN4094所映射到的MST

Instance的MSTIDPage9MSTP基本概念－MST區(qū)域（MST

Region）RegionARegionCRegionBInstance

1的根交換機(jī)Instance

1：包含VLAN2Instance

1的根交換機(jī)Instance

1：包含VLAN2Page10MST配置標(biāo)識(shí)（MST

Configuration

Identifier）Page11Configuration

IdentifierFormatSelectorConfiguration

NameRevisionLevelConfiguration

Digest1

Byte32

Bytes2

Bytes16

Bytes0x00區(qū)域名稱修訂級(jí)別MST配置表摘要MST

Instance的基本計(jì)算過程LANALANBSWASWBDDDRRAInstance

1：VLAN2MSTI

RegionalRootPage124096.00e0-fc16-ee438192.00e0-fc41-425932768.00e0-fc41-43b9DSWCVLAN2MSTP基本配置－物理拓?fù)銵ANALANBSWASWBSWCVLAN2VLAN3MSTIRegional

RootInstance

1：VLAN2Instance

2：VLAN3MSTIRegional

RootA

ATrunkTrunkTrunkPage13E1/0/2E1/0/3E1/0/12E1/0/13E1/0/12E1/0/13E1/0/15E1/0/15MSTP基本配置－配置SWA的MST域參數(shù)[SWA]stp

enable[SWA]stp

mode

mstp[SWA]stp

region-configuration[SWA-mst-region]region-name

RegionA[SWA-mst-region]revision-level

1[SWA-mst-region]instance

1

vlan

2[SWA-mst-region]instance

2

vlan

3[SWA-mst-region]active

region-configuration[SWA-mst-region]quit[SWA]stp

instance

1

priority

4096[SWA]stp

instance

2

priority

8192[SWA]Page14說明：SWB、SWC配置MST域參數(shù)類似，不再贅述。Page15MSTP基本配置－設(shè)置RSTP點(diǎn)到點(diǎn)鏈路和邊緣端口[SWA]interface

Ethernet

1/0/12[SWA-Ethernet1/0/12]stp

point-to-pointforce-true[SWA]interface

Ethernet

1/0/15[SWA-Ethernet1/0/15]stp

point-to-pointforce-true[SWB]interface

Ethernet

1/0/13[SWB-Ethernet1/0/13]stp

point-to-pointforce-true[SWB]interface

Ethernet

1/0/15[SWB-Ethernet1/0/15]stp

point-to-pointforce-true[SWC]interface

Ethernet

1/0/12[SWC-Ethernet1/0/12]stp

point-to-pointforce-true[SWC]interface

Ethernet

1/0/13[SWC-Ethernet1/0/13]stp

point-to-pointforce-true[SWC]interface

Ethernet

1/0/2[SWC-Ethernet1/0/2]stp

edged-port

enable[SWC]interface

Ethernet

1/0/3[SWC-Ethernet1/0/3]stp

edged-port

enablePage16MSTP基本配置－驗(yàn)證MSTP基本信息[SWA]display

stp

briefMSTID001122PortEthernet1/0/12Ethernet1/0/15Ethernet1/0/12Ethernet1/0/15Ethernet1/0/12Ethernet1/0/15RoleDESIROOTDESIDESIDESIROOTSTP

StateFORWARDINGFORWARDINGFORWARDINGFORWARDINGFORWARDINGFORWARDINGProtectionNONENONENONENONENONENONE[SWB]display

stp

briefPage17MSTID001122PortEthernet1/0/13Ethernet1/0/15Ethernet1/0/13Ethernet1/0/15Ethernet1/0/13Ethernet1/0/15RoleDESIDESIDESIROOTDESIDESISTP

StateFORWARDINGFORWARDINGFORWARDINGFORWARDINGFORWARDINGFORWARDINGProtectionNONENONENONENONENONENONEMSTP基本配置－驗(yàn)證MSTP基本信息[SWC]display

stp

briefPage18MSTIDPortRoleSTP

StateProtection0Ethernet1/0/2DESIFORWARDINGNONE0Ethernet1/0/3DESIFORWARDINGNONE0Ethernet1/0/12ALTEDISCARDINGNONE0Ethernet1/0/13ROOTFORWARDINGNONE1Ethernet1/0/2DESIFORWARDINGNONE1Ethernet1/0/12ROOTFORWARDINGNONE1Ethernet1/0/13ALTEDISCARDINGNONE2Ethernet1/0/3DESIFORWARDINGNONE2Ethernet1/0/12ALTEDISCARDINGNONE2Ethernet1/0/13ROOTFORWARDINGNONE目錄MSTP基本概念MSTP高級(jí)配置Page19MSTP工作模式Page20[SWB]stpmodestp[SWB]stpmoderstp[SWB]stpmodemstp工作模式描述STP只能和STP交換機(jī)交互，只能在端口上收發(fā)配置BPDU。RSTP運(yùn)行RSTP，如果檢測到端口相鄰的交換機(jī)運(yùn)行在STP模式下，則運(yùn)行STP。MSTP運(yùn)行MSTP，如果檢測到端口相鄰的交換機(jī)運(yùn)行在

RSTP模式下，則運(yùn)行RSTP，如果檢測到端口相鄰的交換機(jī)運(yùn)行在STP模式，則運(yùn)行STP。[SWB]stp

mcheck設(shè)置交換機(jī)為主用/備用根交換機(jī)Page21[SWA]stp

instance

0

root

primary[SWA]display

stp

instance

0[CIST

Global

Info][Mode

MSTP]-CIST

Bridge

:0.000f-e212-f8e1Bridge

Times :Hello

2s

MaxAge

20s

FwDly

15s

MaxHop

20CISTRoot/ERPC:0.000f-e212-f8e1

/

0CISTRegRoot/IRPC:0.000f-e212-f8e1

/

0CISTRootPortId:0.0CISTRoot

Type:PRIMARY

root[SWB]stp

instance

0

root

secondary[SWB]display

stp

instance

0[CIST

Global

Info][Mode

MSTP]-CIST

Bridge

:4096.000f-e212-f890Bridge

Times :Hello

2s

MaxAge

20s

FwDly

15s

MaxHop

20CISTRoot/ERPC:0.000f-e212-f8e1

/

199999CISTRegRoot/IRPC:4096.000f-e212-f890/

0CISTRootPortId:128.13CISTRoot

Type:SECONDARY

root配置MSTP最大跳數(shù)[SWA]stp

max-hops

30[SWA]display

stp[CIST

Global

Info][Mode

MSTP]-Page22CIST

BridgeBridge

TimesCIST

Root/ERPCCIST

RegRoot/IRPCCIST

RootPortIdBPDU-ProtectionCIST

Root

TypeTC

or

TCN

receivedTime

since

last

TC:0.000f-e212-f8e1:Hello

2s

MaxAge

20s

FwDly

15s

MaxHop

30:0.000f-e212-f8e1

/

0:0.000f-e212-f8e1

/

0:0.0:disabled:PRIMARY

root:3:0

days

1h:23m:36s調(diào)整時(shí)間參數(shù)[SWA]stp

timer

?Page23forward-delaySpecifyforward

delayhelloSpecifyhello

time

intervalmax-ageSpecifymax

age[SWA]stp

timer-factor

?INTEGER<1-10> Aged

out

time

factor網(wǎng)絡(luò)直徑與時(shí)間參數(shù)的關(guān)系Page24網(wǎng)絡(luò)直徑Hello

TimerMax

AgeForward

Delay22s10s7s32s12s9s42s14s10s52s16s12s62s18s13s72s20s15s[SWA]stp

bridge-diameter

?INTEGER<2-7> Bridge

diameter配置邊緣端口保護(hù)[SWA]stp

bpdu-protection[SWA][SWA]display

stp[CIST

Global

Info][Mode

MSTP]-Page25CIST

BridgeBridge

Times

CIST

Root/ERPCCIST

RegRoot/IRPCCIST

RootPortIdBPDU-ProtectionTC

or

TCN

receivedTime

since

last

TC:32768.000f-e212-f8e1:Hello

2s

MaxAge

20s

FwDly

15s

MaxHop

20:32768.000f-e212-f8e1/

0:32768.000f-e212-f8e1/

0:0.0:enabled:0:0

days

1h:19m:5s配置根交換機(jī)的指定端口保護(hù)[SWA]

interface

Ethernet

1/0/13[SWA-Ethernet0/0/13]

stp

root-protection[SWA]display

stp

interface

Ethernet

1/0/13[CIST][Port13(Ethernet1/0/13)][FORWARDING]-Page26PortProtocol:enabledPortRole:CIST

Designated

PortPortPriority:128PortCost(Dot1T):Config=auto

/

Active=199999Desg.

Bridge/PortPort

EdgedPoint-to-pointTransit

LimitProtection

Type:0.000f-e212-f8e1

/

128.13:Config=disabled

/

Active=disabled:Config=auto

/

Active=true:3

packets/hello-time:RootNum

of

Vlans

Mapped

:1PortTimesBPDU

Sent:Hello

2s

MaxAge

20s

FwDly

15s

RemHop

0:18TCN:0,Config:

0,

RST:

0,

MST:18BPDU

Received:0TCN:0,Config:

0,

RST:

0,

MST:0配置環(huán)路保護(hù)功能[SWB]

interface

Ethernet

1/0/13[SWB-Ethernet0/0/13]

stp

loop-