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Quantitative Finance · Glossaire

Qu'est-ce que « Route diversity » ?

Definition 15.6 Networks, Hardware and Trading Infrastructure · Chapitre 15 — Buying Connectivity

Route diversity is the property of two or more circuits between the same end points that they share no physical element whose failure would stop both: no duct, cable, building entry, room, piece of equipment or power supply.

Three designs, schematically: one circuit; two circuits whose fibres share a duct, so that one event (a cut, a fire) stops both; and two diverse circuits that share nothing between the firm’s and the venue’s rooms.
Figure 15.2. Three designs, schematically: one circuit; two circuits whose fibres share a duct, so that one event (a cut, a fire) stops both; and two diverse circuits that share nothing between the firm’s and the venue’s rooms.
DesignAvailabilityExpected95th pct.Annual costLoss at 2 000
(%)(min/yr)(min/yr)(kUSD)USD/min (kUSD)
One circuit99.9088479.61 541139.2959
Two circuits in one duct99.9315360.41 992278.4721
Two diverse circuits99.999920.40320.20.9
Table 15.2. Simulation of three designs of 10-gigabit NYSE connections (published prices; the failure rates, the duct’s common-mode events, a 15% premium for diversity and the trading loss per minute are assumptions): steady-state availability and expected minutes down, the 95th percentile of a simulated year (1 000 years), annual cost with one cross-connect per circuit, and the expected trading loss. Data: nw_buy.results().
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