Ukulinganisa njani ukulibaziseka kwenethiwekhi kwi-Ethernet switch?

Njengoko kunokubonwa kwisahluko esidlulileyo, ukulibaziseka kokutshintsha yenye yezinto eziphambili ezikhokelela ekulibazisekeni kwenethiwekhi. Ke silinganisa njani iswitshi latency?

Ukulibaziseka kokutshintsha kulinganiswa ukusuka kwi-port ukuya kwi-port kwi-Ethernet switch, kwaye kunokuxelwa ngeendlela ezininzi ngokwendlela yokudlulisa eyamkelwe ngumtshintshi. Zininzi iindlela zokulinganisa ukulibaziseka kwenethiwekhi yokutshintsha kwe-Ethernet, njenge-IEEE standard RFC2544, Netperf okanye iPing Pong. Umgangatho we-IEEE i-RFC2544 ibonelela ngendlela evunyiweyo kushishino yokulinganisa ukulibaziseka kogcino kunye nokuthunyelwa kwezixhobo. I-Netperf inokusebenzisa isicelo okanye uvavanyo lokuphendula (TCP_RR kunye ne-UDP_RR) ukulibaziseka. I-Ping Pong yindlela yokulinganisa i-latency kwi-high-performance clusters ye-computing. Le ndlela ilinganisa ixesha lokuya nokubuya kweefowuni zenkqubo ekude (RPC) ethunyelwe ngojongano lomyalezo odlulayo (MPI).

Indlela yokunciphisa ukulibaziseka kwenethiwekhi okubangelwa yi-Ethernet switch?

Ukunciphisa ukulibaziseka kwenethiwekhi yokutshintsha kwe-Ethernet, ezi ndlela zilandelayo zingasetyenziswa:

1.Yandisa umthamo womnatha
Ukwandisa umthamo wokutshintsha kwe-Ethernet kubalulekile ekunciphiseni ukubambezeleka kwenethiwekhi. Ungajonga iswitshi yakho ukuze ubone ukuba inomsebenzi wokwandisa umthamo womnatha. Okokuqala, udinga injini ekhawulezayo. Ukutshintsha kwe-Ethernet kunye nokulahleka kwepakethi ye-zero kuya kunceda inethiwekhi ifezekise ukusebenza okungcono. I-LACP yiprotocol esemgangathweni enokunceda ukuseka ukusebenza kwenethiwekhi engcono nge-port ye-trunk. Ukukhawuleza (FS) S3900 series switch switches support LACP ukunyusa i-bandwidth yokuphucula ukusebenza kwenethiwekhi.

2.Sebenzisa iVLAN ukwabela inethiwekhi

Ngenxa yokuba ulwakhiwo lwesiqhelo lwenethiwekhi ecaba lunokulayisha ngaphezulu ngokulula ikhonkco lokutshintsha, iswitshi ye-Ethernet enomsebenzi weVLAN inokuthumela itrafikhi kwindawo efikeleleka lula. Zininzi iLayer 2 kunye neLayer 3 Ethernet iiswitshi ezinemisebenzi yeVLAN, enokwahlula itrafikhi esekelwe kumazibuko, isabelo esiguqukayo seVLAN, iiprothokholi, iidilesi zeMAC, kunye nezinye iintlobo.

3.Yamkela iteknoloji yokudlulisela phambili

Ukusika itekhnoloji yokudlulisa phambili yindlela esetyenziselwa ukutshintshwa kwepakethi yedatha ukunciphisa ukubambezeleka kwenethiwekhi. Iiswitshi ezisebenzisa itekhnoloji yokudlulisa i-cut-through inolibaziseko olusisigxina. Ngenxa yokuba i-switch-through switch ayikhathaleli malunga nobukhulu bepakethi yedatha, kodwa imisela kuphela ulwalathiso lokudlulisa ngokusekelwe kwidilesi yendawo. Ngoko ke, ukulibaziseka kwayo kulungiswa. Ngokuqhelekileyo, emva kokucubungula idilesi yendawo, i-Ethernet switch iya kuqalisa ukuthumela ipakethi yedatha ngaphambi kokuba ifumane yonke ipakethe yedatha, ngaloo ndlela inciphisa ixesha lokulinda lokudlula kwi-switch.Qaphela, nangona kunjalo, ukuba ayiyi kusebenza xa ithumela i-traffic ukusuka kwi-slow. izibuko ukuya kwizibuko elikhawulezayo okanye ukusuka kwelinye izibuko ukuya kwelinye izibuko ngesantya esifanayo.

Le ndlela ingentla inokunciphisa ukulibaziseka kwenethiwekhi ye-Ethernet switch. Zininzi iiswitshi ze-Ethernet eziphantsi-latency kwimarike, ezinceda ukufumana ukusebenza ngcono kwenethiwekhi. Nangona kunjalo, ukuze kuncitshiswe ixesha lokulinda lomnatha, ngokusisiseko, akufuneki kugxininiswe kuphela kwizitshixo ezenza inethiwekhi, kodwa kunye nexesha lokulinda lenkqubo kunye notshintsho kwixesha lokulinda kufuneka lihlale lihoywa.

Ukushwankathela
Ngokubanzi, okukhona ukulibaziseka kwenethiwekhi encinci, kokukhona umgangatho wenethiwekhi ungcono. Ngexesha elifanayo, ukulibaziseka kwenethiwekhi akukwazi ukupheliswa ngokupheleleyo, kodwa kunokuncitshiswa. Ukutshintsha kwe-Ethernet kunye ne-latency ephantsi kunye ne-bandwidth ephezulu yinto efanelekileyo yokukhetha, okunceda ukunciphisa i-latency yenethiwekhi.

I-JHA-MIG024W4-1U eLawulayo i-Industrial Ethernet Switch