I-SPAN
Ungasebenzisa umsebenzi we-SPAN ukukopisha amaphakethe kusuka echwebeni elithile kuya kwelinye ichweba kuswishi exhunywe kudivayisi yokuqapha inethiwekhi yokuqapha nokuxazulula izinkinga zenethiwekhi.
I-SPAN ayithinti ukushintshana kwamaphakethe phakathi kwechweba lomthombo kanye nechweba lokufinyelela. Wonke amaphakethe angena futhi aphumayo esuka echwebeni lomthombo akopishwa aye echwebeni lokufinyelela. Kodwa-ke, uma ithrafikhi ebonisiwe idlula umkhawulokudonsa wechweba lokufinyelela, isibonelo, uma ichweba lokufinyelela le-100Mbps liqapha ithrafikhi yechweba lomthombo le-1000Mbps, amaphakethe angalahlwa.
I-RSPAN
Ukulingisa i-remote port (RSPAN) kuwukunwetshwa kokulingisa i-port yendawo (SPAN). Ukulingisa i-remote port kwephula umkhawulo wokuthi i-source port kanye ne-destination port kumele kube kudivayisi efanayo, okuvumela i-source port kanye ne-destination port ukuthi ihlanganise amadivayisi amaningi enethiwekhi. Ngale ndlela, umphathi wenethiwekhi angahlala egumbini eliphakathi lemishini futhi abheke amaphakethe edatha e-remote mirroring port nge-analyzer.
I-RSPANidlulisela wonke amaphakethe abonisiwe echwebeni lokuya kulo ledivayisi yokubukisa ekude nge-RSPAN VLAN ekhethekile (ebizwa ngokuthi i-Remote VLAN). Izindima zamadivayisi ziwela ezigabeni ezintathu:
1) Ukushintsha Komthombo: I-remote image source port ye-switch, inesibopho sekhophi yomlayezo we-source port ovela ku-source switch output port output, ngokusebenzisa i-Remote VLAN forwarding, idlulisele phakathi noma ukushintsha.
2) Iswishi Esimaphakathi: kunethiwekhi ephakathi kweswishi yomthombo nendawo oya kuyo, shintsha, faka isibuko ngokusebenzisa i-Remote VLAN packet transmission uye kwenye noma ukuze ushintshe phakathi. Uma iswishi yomthombo ixhunywe ngqo endaweni oya kuyo, akukho swishi ephakathi ekhona.
3) Ukushintsha Indawo: I-remote mirror point of switch, isibuko esivela ku-Remote VLAN ukuze uthole umlayezo nge-mirror point to monitor port.
I-ERSPAN
I-Encapsulated Remote port mirroring (ERSPAN) iyisandiso se-remote port mirroring (RSPAN). Esikhathini esivamile se-remote port mirroring, amaphakethe ahlanganisiwe angadluliselwa kuphela ku-Layer 2 futhi awakwazi ukudlula kunethiwekhi eqondisiwe. Esikhathini se-encapsulated remote port mirroring, amaphakethe ahlanganisiwe angadluliselwa phakathi kwamanethiwekhi aqondisiwe.
I-ERSPAN ihlanganisa wonke amaphakethe abonisiwe kumaphakethe e-IP ngomhubhe we-GRE bese iwahambisa echwebeni lapho uya khona ledivayisi yokubukisa ekude. Imisebenzi yedivayisi ngayinye ihlukaniswe ngezigaba ezimbili:
1) Ukushintsha Komthombo: i-encapsulation remote image source port yeswishi, inesibopho sekhophi yomlayezo we-source port ovela ku-source switch output port output, nge-GRE efakwe ku-IP packet forwarding, ukudlulisa amaswishi ngenhloso.
2) Ukushintsha Indawo: i-encapsulation remote mirror destination port yeswishi, izothola umlayezo nge-mirror mirror destinationport, ngemva kokususa i-capsulation, umlayezo we-GRE uthunyelwe kumishini yokuqapha.
Ukuze kusetshenziswe umsebenzi wokulinganisa imbobo ekude, amaphakethe e-IP ahlanganiswe yi-GRE kumele adluliselwe kudivayisi yokulinganisa indawo okuyo kunethiwekhi.
Ukukhishwa kwe-Packet Encapsulation
Isekelwa ukufaka noma yimaphi amaphakethe acacisiwe kuthrafikhi ethwetshuliwe kusihloko se-RSPAN noma se-ERSPAN bese ikhipha amaphakethe ohlelweni lokuqapha olungemuva noma kuswishi yenethiwekhi.
Ukuqedwa Kwephakethe Lomhubhe
Kusekelwe umsebenzi wokuqeda iphakethe lomhubhe, ongalungiselela amakheli e-IP, amamaski, izimpendulo ze-ARP, kanye nezimpendulo ze-ICMP zamachweba okufaka ithrafikhi. Ithrafikhi ezoqoqwa kunethiwekhi yomsebenzisi ithunyelwa ngqo kudivayisi ngezindlela zokufaka ithrafikhi njenge-GRE, GTP, kanye ne-VXLAN.
Ukususa Amakhanda e-VxLAN, VLAN, GRE, MPLS
Kusekelwe i-header ye-VxLAN, VLAN, GRE, MPLS ekhishwe kuphakethe ledatha lokuqala kanye nomphumela odluliselwe.
Isikhathi sokuthunyelwe: Jan-03-2023
