上海電信PTN網(wǎng)絡(luò)技術(shù)培訓(xùn)（之二）

1、1上海電信上海電信PTN網(wǎng)絡(luò)技術(shù)培訓(xùn)（之二）網(wǎng)絡(luò)技術(shù)培訓(xùn)（之二）2010/07信息網(wǎng)絡(luò)部技術(shù)支撐處信息網(wǎng)絡(luò)部技術(shù)支撐處 魏曉燕魏曉燕2MPLS-TP標(biāo)準(zhǔn)演進(jìn)標(biāo)準(zhǔn)演進(jìn)ACHACHLabel forwarding,Any-to-MPLSVPN, TEBFD/FRREnhance- L3+ OAM&PS Simplify & EnhanceIP headerIP headerIPIPPayloadPayloadIPIPEncapEncapPHYPHYCL-PSBest effortSingle serviceMPLS MPLS headerheaderIP payloadIP pay

2、load/L2 service/L2 serviceIP headerIP header/PW demux/PW demuxPHYPHYMPLS/PWE3MPLS/PWE3CO-PSQoS guaranteeMulti-serviceRestorationEncapEncapSimilar operation with SDH(can work without a CP)CO-PS; Decoupled with IPQoS guaranteeMulti-serviceOAM& PSData PlaneData PlaneManagement PlaneManagement Plane

3、T-MPLST-MPLSMPLSMPLS header headerPayloadPayloadPHYPHYEncapEncapOAMOAM Lbl (14) Lbl (14)OAM OAM PDUPDUMPLS-TPMPLS-TPMPLSMPLS header headerPayloadPayloadPHYPHYEncapEncapOAMOAM Lbl (13) Lbl (13)OAM OAM PDUPDUInterop with MPLSReuse/Extend existing MPLS functionsIP routingMPLS CPGMPLS CPControl PlaneCon

4、trol PlaneMPLSMPLS header headerPHYPHYEncapEncapMPLSMPLS header headerPHYPHYEncapEncapCO-PS; Decoupled with IPQoS guaranteeMulti-serviceOAM& PSInterop with MPLScan work without a CPLSP: GMPLS (RSVP-TE)PW: LDPAnimated3OSI參考模型參考模型2、數(shù)據(jù)鏈路層1、物理層3、網(wǎng)絡(luò)層4、傳輸層5、會(huì)話層6、表示層7、應(yīng)用層運(yùn)營(yíng)商網(wǎng)絡(luò)關(guān)注這三層路由器工作在第三層交換機(jī)工作在第二層4交換

5、機(jī)端口模式交換機(jī)端口模式一個(gè)二層域就是一個(gè)廣播域一個(gè)二層域就是一個(gè)廣播域?yàn)榱藴p小廣播范圍和實(shí)現(xiàn)端口隔離，引入為了減小廣播范圍和實(shí)現(xiàn)端口隔離，引入VLANVLAN交換機(jī)端口可以設(shè)置成交換機(jī)端口可以設(shè)置成accessaccess、trunktrunk、hybridhybrid模式模式不同不同vlanvlan的數(shù)據(jù)需要通過(guò)三層才能互通的數(shù)據(jù)需要通過(guò)三層才能互通Vlan 2Vlan 3Vlan 2Vlan 3trunktrunk單臂路由器Vlan2、vlan3子接口hybridhybridhybridtag報(bào)文 untag報(bào)文5以太網(wǎng)幀結(jié)構(gòu)以太網(wǎng)幀結(jié)構(gòu)DMACSMACTypeDataCRC6 bytes6 bytes2 bytes461500 bytes4 bytesDMACSMACTypeDataFCS6 bytes6 bytes2 bytes461500 bytes4 bytes4 bytesTPIDPRIVIDCFI2 bytes3 bits1 bit12 bitesDMACSMACTypeDataFCS6 bytes6 bytes2 bytes461500 bytes4 bytes4 bytesethernetVLANQINQ4 bytes6交換路由簡(jiǎn)單介紹交換路由簡(jiǎn)單介紹交換機(jī)工作機(jī)