Internet Shared Bandwidth quotas and limits - Internet Shared Bandwidth

Quotas

Resource	Default limit	Actions
Pay-as-you-go Internet Shared Bandwidth instances per account per region	pay-by-traffic: 5	Contact your business manager.
EIPs per Internet Shared Bandwidth instance	100	Request a quota increase in Quota Center. Create a quota increase application.

Bandwidth limits

Internet Shared Bandwidth uses a distributed cluster architecture that distributes traffic and the configured maximum bandwidth evenly across multiple servers. An instance requires multiple connections to reach its maximum bandwidth.

Maximum traffic per connection = Maximum bandwidth of the Internet Shared Bandwidth instance / Number of servers in the traffic cluster

For example, if you configure a maximum bandwidth of 2,000 Mbps and the cluster uses four servers, the maximum traffic per connection is 500 Mbps (2,000 Mbps / 4).

Important

An Internet Shared Bandwidth instance may occasionally exceed its configured maximum bandwidth. This limit is continuously refined. We recommend that you set the maximum bandwidth slightly above your actual requirements.
If you purchase more than 1 Gbps of shared bandwidth, distributed throttling rules are automatically enabled.
The maximum bandwidth is a reference upper limit, not a guaranteed commitment. During resource contention, actual bandwidth may fall below the configured maximum.

Inbound and outbound bandwidth limits:

Inbound bandwidth: equals the maximum bandwidth you purchase.
Outbound bandwidth: equals the maximum bandwidth you purchase.

For example, if you purchase an instance with a maximum bandwidth of 5 Gbps, the maximum inbound and outbound bandwidth are both 5 Gbps.

EIP requirements

An EIP can be added to an Internet Shared Bandwidth instance only if it meets these requirements:

The EIP uses the pay-as-you-go billing method.
The EIP is in the same region as the Internet Shared Bandwidth instance.
The EIP has the same line type as the Internet Shared Bandwidth instance.