SPAN
Koj tuaj yeem siv SPAN muaj nuj nqi los luam cov pob ntawv los ntawm qhov chaw nres nkoj tshwj xeeb mus rau lwm qhov chaw nres nkoj ntawm qhov hloov pauv uas txuas nrog lub network saib xyuas cov cuab yeej rau kev saib xyuas network thiab daws teeb meem.
SPAN tsis cuam tshuam rau pob ntawv pauv ntawm qhov chaw nres nkoj thiab qhov chaw nres nkoj. Tag nrho cov pob ntawv nkag mus thiab tawm ntawm qhov chaw nres nkoj yog theej mus rau qhov chaw nres nkoj. Txawm li cas los xij, yog tias lub iav tsheb khiav dhau qhov bandwidth ntawm qhov chaw nres nkoj, piv txwv li, yog tias qhov chaw nres nkoj 100Mbps saib xyuas cov tsheb khiav ntawm 1000Mbps qhov chaw nres nkoj, pob ntawv yuav raug muab pov tseg.
RSPAN
Chaw taws teeb chaw taws teeb mirroring (RSPAN) yog qhov txuas ntxiv ntawm qhov chaw nres nkoj hauv zos mirroring (SPAN). Chaw nres nkoj chaw taws teeb mirroring rhuav tshem cov kev txwv uas qhov chaw nres nkoj qhov chaw nres nkoj thiab qhov chaw nres nkoj yuav tsum nyob ntawm tib lub cuab yeej, ua kom qhov chaw nres nkoj qhov chaw nres nkoj thiab qhov chaw nres nkoj mus hla ntau lub network. Nyob rau hauv txoj kev no, tus thawj coj hauv lub network tuaj yeem zaum hauv chav tsev khoom siv hauv nruab nrab thiab saib xyuas cov ntaub ntawv ntawm cov chaw taws teeb tsom iav los ntawm qhov ntsuas ntsuas.
RSPANxa tag nrho cov pob ntawv mirrored mus rau qhov chaw nres nkoj ntawm cov chaw taws teeb tsom iav los ntawm RSPAN VLAN tshwj xeeb (hu ua Remote VLAN) Lub luag haujlwm ntawm cov khoom siv poob rau hauv peb pawg:
1) Qhov Chaw Hloov: Cov duab nyob deb ntawm qhov chaw nres nkoj ntawm kev hloov, yog lub luag haujlwm rau ib daim qauv ntawm qhov chaw nres nkoj cov lus los ntawm qhov chaw hloov chaw tso zis tso zis, los ntawm Chaw Taws Teeb VLAN xa mus, xa mus rau nruab nrab lossis hloov.
2) Intermediate Hloov: nyob rau hauv lub network ntawm qhov chaw thiab qhov chaw hloov mus, hloov, iav los ntawm tej thaj chaw deb VLAN pob ntawv kis mus rau tom ntej los yog hloov mus rau hauv nruab nrab. Yog tias qhov hloov pauv tau ncaj qha mus rau qhov chaw hloov chaw, tsis muaj qhov hloov pauv nruab nrab.
3) Chaw Hloov Chaw: Cov chaw taws teeb tsom iav qhov chaw nres nkoj ntawm qhov hloov, daim iav los ntawm Chaw Taws Teeb VLAN kom tau txais cov lus los ntawm daim iav qhov chaw nres nkoj xa mus los saib xyuas cov khoom siv.
ERSPAN
Encapsulated Chaw Taws Teeb Chaw Taws Teeb (ERSPAN) yog qhov txuas ntxiv ntawm chaw taws teeb chaw taws teeb mirroring (RSPAN). Nyob rau hauv ib qho kev sib tham ntawm qhov chaw nres nkoj mirroring, mirrored pob ntawv tuaj yeem kis tau tsuas yog ntawm Txheej 2 thiab tsis tuaj yeem dhau los ntawm kev sib txuas lus. Nyob rau hauv ib qho encapsulated chaw nres nkoj mirroring kev sib tham, mirrored pob ntawv tuaj yeem kis tau los ntawm kev sib txuas lus.
ERSPAN encapsulates tag nrho cov pob ntawv mirrored rau hauv IP pob ntawv los ntawm GRE qhov thiab coj lawv mus rau qhov chaw nres nkoj ntawm qhov chaw taws teeb tsom iav. Lub luag haujlwm ntawm txhua lub cuab yeej tau muab faib ua ob pawg:
1) Qhov Chaw Hloov: encapsulation tej thaj chaw deb duab qhov chaw nres nkoj ntawm kev hloov, yog lub luag haujlwm rau daim ntawv theej ntawm qhov chaw nres nkoj cov lus los ntawm qhov chaw hloov chaw tso zis tso zis, los ntawm GRE encapsulated rau hauv IP pob ntawv xa mus, hloov mus rau lub hom phiaj.
2) Qhov Chaw Hloov Chaw: encapsulation tej thaj chaw deb daim iav lo ntsiab muag chaw nres nkoj ntawm kev hloov, yuav tau txais cov lus los ntawm daim iav tsom iav qhov chaw nres nkoj, tom qab decapsulation GRE lus xa mus rau cov khoom siv saib xyuas.
Txhawm rau siv qhov chaw nres nkoj chaw taws teeb mirroring muaj nuj nqi, IP pob ntawv encapsulated los ntawm GRE yuav tsum tau routable mus rau lub hom phiaj mirroring ntaus ntawv ntawm lub network.
Packet Encapsulation tso zis
Txhawb kom encapsulate tej pob ntawv teev nyob rau hauv lub tsheb khiav mus rau lub RSPAN lossis ERSPAN header thiab tso tawm cov pob ntawv mus rau tom qab-kawg saib xyuas qhov system lossis network hloov
Tunnel Packet Termination
Txhawb nqa lub qhov packet termination function, uas tuaj yeem teeb tsa IP chaw nyob, qhov ncauj qhov ntswg, ARP cov lus teb, thiab ICMP cov lus teb rau cov chaw nres nkoj nkag. Tsheb thauj mus los yuav tsum tau sau rau ntawm tus neeg siv network yog xa ncaj qha mus rau lub cuab yeej los ntawm txoj kev encapsulation xws li GRE, GTP, thiab VXLAN
VxLAN, VLAN, GRE, MPLS Header Stripping
Txhawb nqa VxLAN, VLAN, GRE, MPLS header stripped hauv thawj cov ntaub ntawv pob ntawv thiab xa tawm cov zis.
Post lub sij hawm: Jan-03-2023
