Ungakukala kanjani ukubambezeleka kwenethiwekhi ekushintsheni kwe-Ethernet?

Njengoba kungabonwa esahlukweni esandulele, ukushintsha ukubambezeleka kungenye yezinto ezibalulekile eziholela ekubambezelekeni kwenethiwekhi. Ngakho-ke siyikala kanjani i-switch latency?

Ukubambezeleka kokushintsha kukalwa kusuka kuphothi kuye kwelinye kuswishi ye-Ethernet, futhi kungabikwa ngezindlela eziningi ngokuya ngendlela yokudlulisela etholwa iswishi. Kunezindlela eziningi zokukala ukubambezeleka kwenethiwekhi kokushintshwa kwe-Ethernet, njenge-IEEE ejwayelekile RFC2544, Netperf noma i-Ping Pong. Izinga le-IEEE i-RFC2544 lihlinzeka ngendlela egunyazwe yimboni yokulinganisa ukubambezeleka kwendawo yokugcina kanye nokudlulisa impahla. I-Netperf ingasebenzisa ukulibaziseka kwesicelo noma impendulo (TCP_RR kanye ne-UDP_RR). I-Ping Pong iyindlela yokulinganisa ukubambezeleka kumaqoqo amakhompiyutha asebenza kahle kakhulu. Le ndlela ikala isikhathi sokuya nokubuya sezingcingo ze-remote process (RPC) ezithunyelwa ngesixhumi esibonakalayo esidlula umlayezo (MPI).

Unganciphisa kanjani ukubambezeleka kwenethiwekhi okubangelwa ukushintshwa kwe-Ethernet?

Ukuze kuncishiswe ukubambezeleka kwenethiwekhi kokushintshwa kwe-Ethernet, izindlela ezilandelayo zingasetshenziswa:

1.Nweba umthamo wenethiwekhi
Ukwandisa umthamo weswishi ye-Ethernet kubalulekile ekwehliseni ukubambezeleka kwenethiwekhi. Ungahlola iswishi yakho ukuze ubone ukuthi inomsebenzi wokukhulisa umthamo wenethiwekhi. Okokuqala, udinga injini esheshayo. Iswishi ye-Ethernet enokulahlekelwa kwephakethe elinguziro izosiza inethiwekhi ifinyelele ukusebenza okungcono. I-LACP iyiphrothokholi ejwayelekile engasiza ukusungula ukusebenza kwenethiwekhi okungcono ngembobo ye-trunk. Amaswishi ochungechunge olusheshayo (FS) S3900 asekela i-LACP ukwandisa umkhawulokudonsa ukuze kuthuthukiswe ukusebenza kwenethiwekhi.

2.Sebenzisa i-VLAN ukuze unikeze inethiwekhi

Ngenxa yokuthi i-architecture yenethiwekhi eyisicaba yendabuko ingalayisha kalula isixhumanisi sokushintshwa, iswishi ye-Ethernet enomsebenzi we-VLAN ingathumela ithrafikhi endaweni efinyeleleka kalula. Kunamaswishi amaningi e-Layer 2 kanye ne-Layer 3 Ethernet anemisebenzi ye-VLAN, engahlukanisa ithrafikhi ngokusekelwe kumachweba, isabelo esiguqukayo se-VLAN, izivumelwano, amakheli e-MAC, nezinye izinhlobo.

3.Adopt ukunqamula ukudlulisa ubuchwepheshe

Ubuchwepheshe bokudlulisela phambili buyindlela esetshenziselwa ukushintsha iphakethe ledatha ukuze kuncishiswe ukubambezeleka kwenethiwekhi. Amaswishi asebenzisa ubuchwepheshe bokudlulisela phambili anokubambezeleka okugxilile. Ngoba i-straight-through switch ayinandaba nosayizi ophelele wephakethe ledatha, kodwa inquma kuphela isiqondiso sokudlulisela ngokusekelwe ekhelini okuyiwa kulo. Ngakho-ke, ukubambezeleka kwayo kulungisiwe. Ngokuvamile, ngemva kokucubungula ikheli lendawo, inkinobho ye-Ethernet izoqala ukudlulisa iphakethe ledatha ngaphambi kokuthola yonke iphakethe ledatha, ngaleyo ndlela inciphise isikhathi sokulinda sokudlula emshinini. Nokho, qaphela ukuthi ngeke isebenze lapho kuthunyelwa ithrafikhi isuka kancane. imbobo iye endaweni esheshayo noma isuka kwesinye imbobo iye kwesinye ngesivinini esifanayo.

Indlela engenhla inganciphisa ukubambezeleka kwenethiwekhi kweswishi ye-Ethernet. Kunamaswishi amaningi e-Ethernet ane-latency ephansi emakethe, asiza ukuthola ukusebenza okungcono kwenethiwekhi. Kodwa-ke, ukuze kuncishiswe isikhathi sokulinda senethiwekhi, ngokuyisisekelo, akufanele nje kugxile ekushintsheni okwenza inethiwekhi, kodwa futhi isikhathi sokulinda sesistimu kanye nezinguquko esikhathini sokulinda kufanele ngaso sonke isikhathi sinakeke.

Ngamafuphi
Ngokuvamile, kuncane ukubambezeleka kwenethiwekhi, kuba ngcono ikhwalithi yenethiwekhi. Ngesikhathi esifanayo, ukubambezeleka kwenethiwekhi akukwazi ukuqedwa ngokuphelele, kodwa kungancishiswa. Ukushintsha kwe-Ethernet okune-latency ephansi kanye nomkhawulokudonsa ophezulu kuyisinqumo esihle, esiza ukunciphisa ukubambezeleka kwenethiwekhi.

I-JHA-MIG024W4-1U Ukushintsha Kwe-Ethernet Yezimboni