HUAWEI Elastic IP User Manual

Elastic IP

FAQs

Issue	13
Date	2021-01-08

HUAWEI TECHNOLOGIES CO., LTD.

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and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective holders.

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 fi 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 ff 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.

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Contents

1 Product Consultation..............................................................................................................						1
1.1	What Is a Quota?....................................................................................................................................................................					1
1.2	How Do I Assign or Retrieve a			fi EIP?..................................................................................................................		2
1.3	What Are the	ff	n Between EIP, Private IP Address, Floating IP Address, and Virtual IP Address?
..............................................................................................................................................................................................................						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	ff	n Between the Primary and Extension NICs of ECSs?.................................................			3
1.7	What Is the EIP Assignment Policy?.................................................................................................................................					3
1.8	Can I Assign a		fi EIP?.................................................................................................................................................			4
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		ff	n Between Shared Data Package and Shared Bandwidth?....................................			7
1.14 Do I Need to		nfi	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
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				ffi or from	ffi to
Bandwidth?...................................................................................................................................................................................						13
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
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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	ff	n	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		ff	n		23
5 Connectivity............................................................................................................................					24
5.1	What Are the Priorities of the Custom Route and EIP If Both Are nfi			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

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1Product 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 in the upper left corner and select the desired region and project.

3.In the upper right corner of the page, choose Resources > My Quotas. The Service Quota page is displayed.

Figure 1-1 My Quotas

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

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	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,	nfi	parameters as required.
	In Problem Description area, fi in the content and reason for adjustment.
5.	After all necessary parameters are	nfi	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			EIP?
	If you want to retrieve an EIP that you have released or assign a				fi 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.
	NOTE
	● 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			fi EIP.
1.3	What Are the ff	n	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.

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A fl	n IP address is similar to an EIP. They are both public IP addresses that are
used to connect to the Internet, but a fl		n IP address API cannot be used to
nfi	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	ff n Between the Primary and
Extension NICs of ECSs?
The ff n	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 nfi	n to rectify the
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.

1.7What 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 EIP?.

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

1.8 Can I Assign a 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 fi 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 ff 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 ff n from the actual region to which the IP address belongs.
●	If the region searched through a third-party website is ff		n	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		ff	n from the
	region you selected when purchasing the EIP, use the region you selected
	when purchasing the EIP.
●	If your service is adversely ff	due to the inconsistency between the
	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.

1.11 Can a Bandwidth Be Used by Multiple Accounts?

A bandwidth cannot be used by ff n 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.

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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.

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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).

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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			ff	n	Between Shared Data
Package and Shared Bandwidth?
	Shared data package and shared bandwidth are two ff n products.
	Table 1-1	ff n	between shared data package and shared bandwidth

	Aspect	Shared Data Package				Shared Bandwidth

	Customer	All customers				Mediumand large-scale
						customers

	Feature	After a shared data package takes				Multiple pay-per-use EIPs can
		ff	EIPs billed by		ffi will	be added to a shared
		use the shared data package fi				bandwidth.
		After the shared data package is				Shared bandwidth can be
		used up, the EIPs will be billed by				Shared bandwidth can be
		used up, the EIPs will be billed by				billed by bandwidth or by 95th
		ffi	on a pay-per-use basis.			billed by bandwidth or by 95th
		ffi	on a pay-per-use basis.			percentile bandwidth
		A shared data package is more				percentile bandwidth
		A shared data package is more				(enhanced).
			ff v	than billing by
		ffi	on the yearly/monthly
		basis.

	Usage	A shared data package takes				After purchasing a shared
	method	ff	immediately after being			bandwidth, you need to add
		purchased and you do not need to				EIPs to the shared bandwidth.
		perform any		nfi	n

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1.14 Do I Need to n g	a Shared Data Package for
Use After It Is Purchased?

No.

A shared data package takes ff immediately after being purchased and no additional operations are required. If you have subscribed to pay-per-use EIPs using bandwidth billed by ffi in a region and buy a shared data package in the same region, the EIPs will use the shared data package.

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 fin my purchased EIP.

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

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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+ 27 hidden pages

HUAWEI Elastic IP User Manual

Contents

1 Product Consultation

1.1 What Is a Quota?

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

1.5 Can I Bind an EIP to Multiple ECSs?

1.7What Is the EIP Assignment Policy?

1.9 Does an EIP Change Over Time?

1.10 How Do I Query the Region of My EIPs?

1.11 Can a Bandwidth Be Used by Multiple Accounts?

1.12 How Do I Change an EIP for an Instance?

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