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Public Network Bandwidth Cap

Last updated: 2021-02-26 14:21:46

This document describes the outbound and inbound bandwidth cap of CVM instances, and compares the peak bandwidth in different billing modes.

Outbound Bandwidth Cap (Downstream Bandwidth)

The public network bandwidth cap refers to the upper limit of outbound bandwidth, i.e. the bandwidth going out from CVM instances. The public bandwidth cap varies by network billing mode. See below for details:

The following rules apply to instances created after 00:00, February 24, 2020:

Network Billing Method	Instance		Range of Bandwidth Cap (Mbps)
Network Billing Method	Instance Billing Mode	Instance Configuration	Range of Bandwidth Cap (Mbps)
Bill-by-traffic	Pay-as-you-go instances	All	0-100
Bill-by-bandwidth	Pay-as-you-go instances	All	0-100
Bandwidth package	All		0-2000

The following rules apply to instances created before 00:00, February 24, 2020:

Network Billing Method	Instance		Range of Bandwidth Cap (Mbps)
Network Billing Method	Instance Billing Mode	Instance Configuration	Range of Bandwidth Cap (Mbps)
Bill-by-traffic	Pay-as-you-go instances	All	0-100
Bill-by-bandwidth	Pay-as-you-go instances	All	0-100
	Bandwidth package	All	0-1000

Inbound Bandwidth Cap (Upstream Bandwidth)

The public network inbound bandwidth refers to the bandwidth that flows into CVM instances.

If the bandwidth you purchased is greater than 10 Mbps, Tencent Cloud will assign a public network inbound bandwidth equals to the purchased bandwidth.
If the bandwidth you purchased is less than 10 Mbps, Tencent Cloud will assign 10-Mbps public network inbound bandwidth.

Peak Bandwidth

The peak bandwidth is applicable to both bill-by-traffic and bill-by-bandwidth, but it means differently in these two cases as follows:

Billing Mode	Difference	Notes
Bill-by-traffic	The peak bandwidth is only regarded as the maximum peak bandwidth, and not as the committed bandwidth. When bandwidth resources are contested, the peak bandwidth may be limited.	The sum of peak bandwidth of all the running bill-by-traffic instances (such as CVMs, EIPs, elastic IPv6 addresses) cannot exceed 5 Gbps in one region. If your application requires a guaranteed or higher bandwidth, choose bill-by-bandwidth.
Bill-by-bandwidth (including monthly bandwidth subscription and hourly bandwidth)	This peak bandwidth is the committed bandwidth, and is guaranteed in case of bandwidth competition.	The sum of peak bandwidth of all the running instances such as CVMs and EIPs that are billed at a fixed bandwidth (including monthly-subscribed bandwidth and hourly bandwidth) cannot exceed 50 Gbps in one region. If you require a higher bandwidth, contact your sales rep.