HUAWEI Elastic IP User Manual

Elastic IP

FAQs

Issue 13

Date 2021-01-08

HUAWEI TECHNOLOGIES CO., LTD.

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Notice

The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specied in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied.

The information in this document is subject to change without notice. Every eort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied.

Elastic IP FAQs Contents

1 Product Consultation.............................................................................................................. 1

1.1 What Is a Quota?.................................................................................................................................................................... 1

1.2 How Do I Assign or Retrieve a

1.3 What Are the

.............................................................................................................................................................................................................. 2

1.4 Can an EIP That Uses Dedicated Bandwidth Be Changed to Use Shared Bandwidth?...................................3

1.5 Can I Bind an EIP to Multiple ECSs?................................................................................................................................. 3

1.6 What Are the Dierences Between the Primary and Extension NICs of ECSs?.................................................3

1.7 What Is the EIP Assignment Policy?................................................................................................................................. 3

1.8 Can I Assign a

1.9 Does an EIP Change Over Time?....................................................................................................................................... 4

1.10 How Do I Query the Region of My EIPs?..................................................................................................................... 4

1.11 Can a Bandwidth Be Used by Multiple Accounts?.................................................................................................... 4

1.12 How Do I Change an EIP for an Instance?...................................................................................................................4

1.13 What Are the

1.14 Do I Need to Congure a Shared Data Package for Use After It Is Purchased?.............................................8

1.15 What Should I Do If I Cannot Find My Purchased EIP on the Management Console?................................8

Dierences Between EIP, Private IP Address, Floating IP Address, and Virtual IP Address?

Specic EIP?................................................................................................................................................. 4

Dierences Between Shared Data Package and Shared Bandwidth?.................................... 7

Specic EIP?.................................................................................................................. 2

2 Billing and Payments............................................................................................................10

2.1 How Is an EIP Billed? ..........................................................................................................................................................10

2.2 How Do I Change the Billing Mode?............................................................................................................................. 11

2.3 How Do I Change the Bandwidth Billing Option from Bandwidth to

Bandwidth?................................................................................................................................................................................... 13

Trac or from Trac to

3 EIP Binding and Unbinding................................................................................................. 14

3.1 How Do I Access an ECS from the Internet After an EIP Is Bound to the ECS?.............................................. 14

3.2 How Do I Access the Internet Using an EIP Bound to an Extension NIC?........................................................ 14

3.3 Can I Bind an EIP to an ECS, to Another ECS?............................................................................................................16

3.4 Can Multiple EIPs Be Bound to an ECS?....................................................................................................................... 16

3.5 Can I Bind an EIP to a Cloud Resource in Another Region?.................................................................................. 17

4 Bandwidth............................................................................................................................... 18

4.1 What Is the Bandwidth Size Range?.............................................................................................................................. 18

4.2 How Do I Increase a Bandwidth to Be More Than 300 Mbit/s?...........................................................................18

4.3 What Bandwidth Types Does the VPC Service Support?.........................................................................................18

4.4 How Do I Buy a Shared Bandwidth?..............................................................................................................................19

Elastic IP FAQs Contents

4.5 Is There a Limit to the Number of EIPs That Can Be Added to Each Shared Bandwidth?..........................19

4.6 What Are the Dierences Between a Dedicated Bandwidth and a Shared Bandwidth? Can a Dedicated

Bandwidth Be Changed to a Shared Bandwidth or the Other Way Around?.........................................................19

4.7 What Are Inbound Bandwidth and Outbound Bandwidth?...................................................................................19

4.8 How Do I Know If My Used Bandwidth Exceeds the Limit?.................................................................................. 20

4.9 Can I Increase My Bandwidth Billed on Yearly/Monthly Basis and Then Decrease It?.................................22

4.10 What Is the Relationship Between Bandwidth and Upload/Download Rate?.............................................. 22

4.11 What Are the Dierences Between Static BGP and Dynamic BGP?................................................................. 23

5 Connectivity............................................................................................................................ 24

5.1 What Are the Priorities of the Custom Route and EIP If Both Are Congured for an ECS to Enable the

ECS to Access the Internet?...................................................................................................................................................... 24

5.2 Why Does Internet Access Fail Even If My ECS Is Bound with an EIP?..............................................................24

5.3 Why Cannot an EIP Be Pinged?....................................................................................................................................... 28

5.4 How Do I Unblock an EIP?................................................................................................................................................ 35

Elastic IP FAQs 1 Product Consultation

1 Product Consultation

1.1 What Is a Quota?

What Is a Quota?

A quota limits the quantity of a resource available to users, thereby preventing spikes in the usage of the resource. For example, a VPC quota limits the number of VPCs that can be created.

You can also request for an increase in quota if an existing quota cannot meet your service requirements.

How Do I View My Quotas?

1. Log in to the management console.

2. Click

3. In the upper right corner of the page, choose Resources > My Quotas.

The Service Quota page is displayed.

Figure 1-1 My Quotas

in the upper left corner and select the desired region and project.

4. View the used and total quota of each type of resources on the displayed page.

NO TE

Elastic IP FAQs 1 Product Consultation

If a quota cannot meet service requirements, apply for a higher quota.

How Do I Apply for a Higher Quota?

1. Log in to the management console.

2. In the upper right corner of the page, choose Resources > My Quotas.

The Service Quota page is displayed.

Figure 1-2 My Quotas

3. Click Increase Quota.

4. On the Create Service Ticket page, congure parameters as required.

In Problem Description area, ll in the content and reason for adjustment.

5. After all necessary parameters are congured, select I have read and agree

to the Tenant Authorization Letter and Privacy Statement and click Submit.

1.2 How Do I Assign or Retrieve a

If you want to retrieve an EIP that you have released or assign a specic EIP, you can use APIs. When assigning an EIP, set the value of ip_address to the IP address that you want to assign. For details, see Elastic IP API Reference.

● If the EIP has been assigned to another user, you will fail to assign your required EIP.

● You cannot use the management console to assign a

Specic EIP?

specic EIP.

1.3 What Are the Dierences Between EIP, Private IP Address, Floating IP Address, and Virtual IP Address?

An EIP is an IP address that can be accessed over the Internet. Each EIP can be used by only one ECS at a time.

A private IP address is used by the internal network of the public cloud for internal communications. It cannot be accessed over the Internet.

Elastic IP FAQs 1 Product Consultation

A oating IP address is similar to an EIP. They are both public IP addresses that are used to connect to the Internet, but a oating IP address API cannot be used to congure bandwidth parameters. For details, see Floating IP Address.

A virtual IP address can be shared among multiple ECSs. A virtual IP address is used for active/standby switchover of ECSs for higher availability. If the active ECS becomes faulty and cannot provide services, the virtual IP address is dynamically re-assigned to the standby ECS so services can continue uninterrupted. For details, see Virtual IP Address Overview.

1.4 Can an EIP That Uses Dedicated Bandwidth Be Changed to Use Shared Bandwidth?

No. An EIP that uses the dedicated bandwidth cannot be changed to use shared bandwidth.

In addition, an EIP that uses the shared bandwidth cannot be changed to use the dedicated bandwidth.

1.5 Can I Bind an EIP to Multiple ECSs?

Each EIP can be bound to only one ECS at a time.

Multiple ECSs cannot share the same EIP. An ECS and its bound EIP must be in the same region. If you want multiple ECSs in the same VPC to share an EIP, you have to use a NAT gateway. For more information, see NAT Gateway User Guide.

1.6 What Are the

Dierences Between the Primary and

Extension NICs of ECSs?

The dierences are as follows:

● Generally, the OS default routes preferentially use the primary NICs. If the OS default routes use the extension NICs, network communication will be interrupted. Then, you can check the route network communication error.

● Primary NICs can communicate with the public service zone (zone where PaaS and DNS services are deployed). Extension NICs cannot communicate this zone.

conguration to rectify the

1.7 What Is the EIP Assignment Policy?

By default, an EIP is assigned randomly.

In case that an EIP is released by mistake, the system will assign you the EIP that you have released in the last 24 hours preferentially.

If you want an EIP that you released 24 hours ago, see How Do I Assign or

Retrieve a

Specic EIP?.

Elastic IP FAQs 1 Product Consultation

If you do not want an EIP that you have released, it is recommended that you buy an EIP rst and then release the one that you do not require any more.

1.8 Can I Assign a Specic EIP?

By default, an EIP is assigned randomly. If you used to release EIPs, the system preferentially assigns an EIP from what you released.

To assign a specic EIP, you can call APIs. For details, see Assigning an EIP.

1.9 Does an EIP Change Over Time?

The EIP bound to an ECS will not be changed after the ECS is stopped and then started.

Stopping and starting an ECS does not aect its EIP.

An EIP will be released if it expires or is in arrears.

1.10 How Do I Query the Region of My EIPs?

You can visit https://en.ipip.net/?origin=CN to query the region of your EIPs.

● The region of an IP address you searched through a third-party website may be dierent from the actual region to which the IP address belongs.

● If the region searched through a third-party website is dierent from that searched on https://en.ipip.net/?origin=CN, use the region searched on

https://en.ipip.net/?origin=CN.

● If the region searched on https://en.ipip.net/?origin=CN is region you selected when purchasing the EIP, use the region you selected when purchasing the EIP.

● If your service is adversely region of the EIP you searched on the third-party database and the region of the EIP you selected when buying the EIP, submit a service ticket.

To know more about the region of EIPs, submit a service ticket.

aected due to the inconsistency between the

dierent from the

1.11 Can a Bandwidth Be Used by Multiple Accounts?

A bandwidth cannot be used by dierent accounts. Each account can use and manage only its own EIP bandwidths.

1.12 How Do I Change an EIP for an Instance?

Scenario 1: Changing an EIP for an ECS

1. Unbind an EIP.

a. Log in to the management console.

Elastic IP FAQs 1 Product Consultation

b. On the console homepage, under Network, click Elastic IP.

c. On the displayed page, locate the row that contains the target EIP, and

click Unbind.

d. Click Yes.

2. Assign an EIP.

a. Log in to the management console.

b. On the console homepage, under Network, click Elastic IP.

c. On the displayed page, click Buy EIP.

d. Set the parameters as prompted.

e. Click Next.

3. Bind the new EIP to the ECS.

a. On the EIPs page, locate the row that contains the target EIP, and click

Bind.

b. Select the desired ECS.

c. Click OK.

4. Release the EIP that has been replaced.

a. Release a single EIP.

i. Log in to the management console.

ii. On the console homepage, under Network, click Elastic IP.

iii. In the EIP list, locate the row that contains the target EIP, and click

Release.

iv. Click Yes.

b. Unbind multiple EIPs at a time.

i. Log in to the management console.

ii. On the console homepage, under Network, click Elastic IP.

iii. In the EIP list, select the EIPs to be unbound.

iv. Click Unbind above the EIP list.

v. Click Yes.

Scenario 2: Changing an EIP for a Load Balancer

1. Unbind an EIP.

a. Log in to the management console.

b. Click Service List. Under Network, click Elastic Load Balance.

c. In the load balancer list, locate the target load balancer and choose More

> Unbind EIP in the Operation column.

d. Click Yes.

2. Assign an EIP. For details, see 2.

3. Bind the new EIP to the load balancer.

a. Log in to the management console.

b. Click Service List. Under Network, click Elastic Load Balance.

Elastic IP FAQs 1 Product Consultation

c. In the load balancer list, locate the target load balancer and choose More

> Bind EIP in the Operation column.

d. In the Bind EIP dialog box, select the EIP to be bound and click OK.

4. Release the EIP that has been replaced. For details, see 4.

Scenario 3: Changing an EIP for a NAT Gateway

1. Assign an EIP. For details, see 2.

2. Modify an SNAT rule.

For details about how to modify an SNAT rule, see Modifying an SNAT Rule. In the EIP area, select the newly assigned EIP and deselect the original EIP (ensure that the deselected EIP belongs to the IP address range on Telefonica Open Cloud).

Figure 1-3 Selecting the newly assigned EIP

3. Modify a DNAT rule.

For details about how to modify a DNAT rule, see Modifying a DNAT Rule. In the EIP area, select the newly assigned EIP (ensure that the original EIP belongs to the IP address range on Telefonica Open Cloud).

Elastic IP FAQs 1 Product Consultation

Figure 1-4 Selecting the newly assigned EIP

4. Release the EIP that has been replaced. For details, see 4.

1.13 What Are the Dierences Between Shared Data Package and Shared Bandwidth?

Shared data package and shared bandwidth are two dierent products.

Table 1-1

Aspect

Customer All customers Medium- and large-scale

Feature After a shared data package takes

Dierences between shared data package and shared bandwidth

Shared Data Package Shared Bandwidth

customers

Multiple pay-per-use EIPs can eect, EIPs billed by trac will use the shared data package rst. After the shared data package is used up, the EIPs will be billed by trac on a pay-per-use basis.

A shared data package is more

cost-eective than billing by trac on the yearly/monthly

basis.

be added to a shared

bandwidth.

Shared bandwidth can be

billed by bandwidth or by 95th

percentile bandwidth

(enhanced).

Usage method

A shared data package takes eect immediately after being purchased and you do not need to perform any congurations.

After purchasing a shared

bandwidth, you need to add

EIPs to the shared bandwidth.

Elastic IP FAQs 1 Product Consultation

1.14 Do I Need to Congure a Shared Data Package for Use After It Is Purchased?

No.

A shared data package takes additional operations are required. If you have subscribed to pay-per-use EIPs using bandwidth billed by trac in a region and buy a shared data package in the same region, the EIPs will use the shared data package.

eect immediately after being purchased and no

1.15 What Should I Do If I Cannot Find My Purchased EIP on the Management Console?

Symptom

After I logged in to the management console, I could not

Possible Cause

● Your EIP is not in the current region. For details, see EIP Not in the Current

Region.

● Your EIP was released because it was expired but was not renewed. For details, see EIP Was Released.

EIP Not in the Current Region

nd my purchased EIP.

Method 1

1. Log in to the management console.

2. Change the region to the one that your EIP resides.

Figure 1-5 Changing a region on the management console homepage

Method 2

1. Log in to the management console.

2. On the management console homepage, click View Resources in All Regions under My Resources.

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