Hloov Peev Xwm

Lub peev xwm ntawm kev hloov pauv, tseem hu ua backplane bandwidth lossis hloov bandwidth, yog qhov siab tshaj plaws ntawm cov ntaub ntawv uas tuaj yeem ua haujlwm ntawm qhov hloov pauv interface lossis daim npav interface thiab cov ntaub ntawv npav. Lub peev xwm pauv tau qhia tag nrho cov ntaub ntawv pauv peev xwm ntawm kev hloov pauv, thiab chav tsev yog Gbps. Lub peev xwm pauv ntawm kev hloov pauv dav dav ntawm ntau Gbps mus rau pua pua Gbps. Qhov siab dua qhov muaj peev xwm hloov pauv ntawm qhov hloov pauv, qhov muaj peev xwm ua kom cov ntaub ntawv muaj zog dua, tab sis tus nqi tsim khoom ntau dua.

 Packet forwarding Rate

Cov pob ntawv xa tawm tus nqi ntawm qhov hloov pauv qhia qhov loj ntawm qhov hloov lub peev xwm xa mus rau pob ntawv. Chav tsev feem ntau yog bps, thiab pob ntawv xa tawm tus nqi ntawm cov keyboards dav dav ntawm kaum ntawm Kpps mus rau pua pua Mpps. Cov pob ntawv xa mus rau tus nqi yog hais txog pes tsawg lab cov ntaub ntawv pob ntawv (Mpps) qhov hloov pauv tuaj yeem xa mus rau ib ob, uas yog, tus naj npawb ntawm cov ntaub ntawv pob khoom uas hloov mus rau tib lub sijhawm. Cov pob ntawv xa mus rau tus nqi qhia txog qhov muaj peev xwm hloov pauv ntawm qhov hloov pauv hauv units ntawm cov ntaub ntawv pob.

Qhov tseeb, qhov taw qhia tseem ceeb uas txiav txim siab cov pob ntawv xa mus yog qhov backplane bandwidth ntawm qhov hloov. Qhov siab dua qhov backplane bandwidth ntawm kev hloov pauv, lub peev xwm ua kom cov ntaub ntawv muaj zog dua, uas yog, qhov siab dua cov pob ntawv xa mus.

Ethernet Nplhaib

Ib lub nplhaib Ethernet (feem ntau hu ua lub nplhaib network) yog lub nplhaib topology uas muaj ib pawg ntawm IEEE 802.1 raws li Ethernet nodes, txhua tus ntawm kev sib txuas lus nrog ob lub nodes los ntawm 802.3 Media Access Control (MAC) raws li lub nplhaib chaw nres nkoj Ethernet MAC tuaj yeem nqa los ntawm lwm cov txheej txheem kev pabcuam (xws li SDHVC, Ethernet pseudowire ntawm MPLS, thiab lwm yam), thiab tag nrho cov nodes tuaj yeem sib txuas lus ncaj qha lossis tsis ncaj.