> For the complete documentation index, see [llms.txt](https://docs.console.zenlayer.com/welcome/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.console.zenlayer.com/welcome/cn/elastic-compute/networking/01-overview/08-comparison.md).

# 计费方式对比

本页对三种 ZEC 公网计费方式进行对比，帮助您快速做出选择；详细分析请参阅各计费方式页面的链接。

## 对比表

| 计费方式         | 位置 / 适用范围     | 覆盖服务            | 计费项                                          |
| ------------ | ------------- | --------------- | -------------------------------------------- |
| **包月带宽**     | —（按实例）        | 单个实例            | 固定带宽大小（Mbps）                                 |
| **流量计费**     | —（按实例）        | 单个实例            | 流量套餐（GB）+ 超额（GB）                             |
| **聚合 95 计费** | 所有加入的 ZEC EIP | 理想情况 50 个以上 EIP | 带宽承诺量（Mbps，如有）+ 可突发 95th percentile 带宽（Mbps） |

三行按适用范围从最窄（单个实例）到最宽（所有加入的 EIP）排列。随着范围扩大，成本通常降低，因为聚合能折扣掉更多峰值。

***

## 选择时真正重要的差异

**计量对象。** 流量计费是唯一按 GB 计数的方式。其他两种均按 Mbps 计数，区别在于计的是*哪种* Mbps——包月带宽是固定上限，聚合 95 计费是合并 Mbps 的月度 95th percentile。

**计量范围。** 包月带宽和流量计费均为*按 EIP* 计费——一个实例，一个计量器。聚合 95 计费将所有加入的 ZEC EIP 汇聚到一个 95th percentile 计算中。这是大规模业务总成本的最大影响因素。

**承诺量的归属。** 包月带宽很直接——您选择的上限就是您付费的依据。流量计费没有承诺量，只有预付费套餐。聚合 95 计费有明确的承诺量底线，加上超出部分的计费。

**带宽上限的作用。** 对于流量计费和聚合 95 计费，上限是独立的上界——EIP 创建时默认 10 Gbps，可调低以保护预算或调高以获得更多空间。对于包月带宽，上限*就是*计费依据——您为所选带宽付费。详见[带宽上限](/welcome/cn/elastic-compute/networking/01-overview/07-bandwidth-cap.md)。

***

## 快速选择参考

| 场景                              | 选择                                                                                   |
| ------------------------------- | ------------------------------------------------------------------------------------ |
| 单个 EIP，突发流量，每月总量可预测             | [流量计费](/welcome/cn/elastic-compute/networking/01-overview/03-data-transfer.md)       |
| 单个 EIP，流量稳定且高                   | [包月带宽](/welcome/cn/elastic-compute/networking/01-overview/04-flat-rate.md)           |
| 50 个以上 EIP，峰值不相关，希望一条聚合 95 计费账单 | [聚合 95 计费](/welcome/cn/elastic-compute/networking/01-overview/05-aggregated-95th.md) |
| 无论采用哪种计量方式都需要硬性上限               | 设置[带宽上限](/welcome/cn/elastic-compute/networking/01-overview/07-bandwidth-cap.md)     |


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