The Impact Of Long-term Subscription And On-demand Billing On Japanese Cn2 Prices And Comparison Methods

question 1: what are the respective price compositions of long-term subscription and on-demand billing on japan's cn2 line?

on japan's cn2 , prices usually consist of bandwidth base price, peak and burst charges, traffic charges, ip/port charges and sla/compensation related to network quality. long-term subscriptions often lock bandwidth on a monthly/year basis and enjoy base price discounts and fixed port fees; while on-demand billing is billed by the hour or by gb, and burst bandwidth and unstable traffic will cause the unit price to rise.

question 2: what are the quantitative impacts on price (discounts, cost dilution, etc.) that choosing long-term subscription will bring?

long-term contracts usually bring discounts (such as ranging from 10% to 40%) and can spread fixed costs (ports, ip, maintenance) over a longer period, reducing the average unit price. in addition, long-term subscriptions allow negotiation of better slas and priority routing, thereby indirectly reducing business costs caused by jitter or packet loss. but be aware that forecast errors incur opportunity costs in idle bandwidth.

question 3: how to calculate the price impact of on-demand billing on short-term peaks and traffic fluctuations?

the core of on-demand billing is the marginal price per unit time or unit traffic. calculation method: statistics of usage per hour/day during the sample period, multiplied by the corresponding unit price, summed, and then divided by the total usage to obtain the average unit price. the billing granularity (seconds/minutes/hours) and upper/lower limit terms need to be considered. in addition, retransmission and peak overflow charges caused by network jitter must be included in the total cost.

question 4: what comparison methods and indicators should be used when comparing two billing methods?

recommended indicators include average unit cost (yuan/gb or yuan/mbps·month), maximum/minimum instantaneous cost, cost variance, sla achievement rate, and the implicit cost of delay and packet loss to the business. comparison method: 1) collect real traffic samples; 2) use both parties’ billing models to simulate costs; 3) do sensitivity analysis (traffic ±20%, peak multiple); 4) calculate payback period/break-even point.

question 5: in actual negotiations and deployment, what hidden factors that affect price should be paid attention to?

considerations include: currency and exchange rate fluctuations, taxes and cross-border settlement costs, bandwidth reservations and resiliency strategies, peering/transit fees, upgrade and downgrade clauses in contracts, early termination penalties and performance guarantees. during evaluation, these hidden costs are converted into unit costs, and data from the trial operation period are used to verify the supplier's commitment .