ZStack Cloud 4.8.0>Tutorials>Private Cloud>VPC Network Tutorial>Basic Deployment

Basic Deployment

ZStack Cloud VPC network supports both IPv4 and IPv6 protocols and users can choose to use IPv4, IPv6, or IPv4+IPv6 dual-stack networks as needed. This chapter introduces the basic deployment of IPv4 and IPv6 VPC networks in detail.

IPv4 Basic Deployment

IPv4, also known as the Internet Protocol version 4, with a 32-bit long address, is the most widely used version of the inter-networking protocol today. ZStack Cloud VPC network supports IPv4 protocol and this chapter will introduce the basic deployment of IPv4 VPC network in detail.

Assume that the customer environment is as follows:

Public Network

Table 1. Public Network configuration
Public Network	Configuration
NIC	em1
VLAN ID	No VLAN
IP Range	10.108.10.100~10.108.10.200
Netmask	255.0.0.0
Gateway	10.0.0.1
DHCP IP	10.108.10.101

Management Network

Table 2. Management Network Configuration
Management Network	Configuration
NIC	em2
VLAN ID	No VLAN
IP Range	192.168.29.10~192.168.29.20
Netmask	255.255.255.0
Gateway	192.168.29.1

Note:

For security and stability reasons, we recommend that you deploy an independent management network and separate it from the public networks.
The management network we mentioned here is the same as that in ZStack Cloud. That is, the management network is the network used to manage hosts, primary storages, and backup storages. If a management network was created before, you can use it directly.

VPC Network-1

Table 3. VPC Network-1 Configuration
Private Network	Configuration
NIC	em1
VLAN ID	2800
IP CIDR	192.168.10.0/24
Gateway	192.168.10.1
DHCP IP	192.168.10.2

VPC Network-2

Table 4. VPC Network-2 Configuration
Private Network	Configuration
NIC	em1
VLAN ID	2900
IP CIDR	192.168.11.0/24
Gateway	192.168.11.1
DHCP IP	192.168.11.2

To deploy a VPC Network in the Cloud, follow these steps:

Create an L2 public network and attach it to the corresponding cluster.
Create an L3 public network.
Create an L2 management network and attach it to the corresponding cluster.
Create an L3 management network.
Add a vRouter image.
Create a vRouter offering.
Create a VPC vRouter from the vRouter offering you created in the preceding step.
Create an L2 private network and attach it to the corresponding cluster. This L2 private network is used to create an L3 VPC network (VPC Network-1).
Create an L3 VPC network (VPC Network-1).
Create an L2 private network and attach it to the corresponding cluster. This L2 private network is used to create an L3 VPC network (VPC Network-2).
Create an L3 VPC network (VPC Network-2).
Use VPC Network-1 and VPC Network-2 to create VM-1 and VM-2, respectively.
Test the connectivity between VPC Network-1 and VPC Network-2.

Create an L2 public network and attach it to the corresponding cluster.
For network configuration information, see Public Network configuration.
On the main menu of ZStack Cloud, choose Resource Center > Network Resource > L2 Network Resources > L2 Network. On the L2 Network page, click Create L2 Network. Then, the Create L2 Network page is displayed. On the displayed page, set the following parameters:
- Zone: By default, the current zone is displayed.
- Name: Set the name as L2-Public Network.
- Description: Optional. Enter a description for the L2 network.
- Type: Select L2NoVlanNetwork.
- Cluster: Select a cluster to be attached, for example, Cluster-1.
- Network Acceleration Mode: You can use different technologies to improve network performance of the L2 network. In this scenario, select Normal.
- NIC Name: Enter a NIC name for the L2 network. For example, em1.
Figure 1. Create L2-Public Network
Create an L3 public network.

For network configuration information, see Public Network configuration.
On the main menu of ZStack Cloud, choose Resource Center > Network Resource > L3 Network Resources > Public Network. On the Public Network page, click Create Public Network. The Create Public Network page is displayed. On the displayed page, set the following parameters:
- Name: Set the name as L3-Public Network.
- Description: Optional. Enter a description for the public network.
- L2 Network: Select the existing L2-Public Network.
- Network Address Type: Select IPv4.
- Network Range Method: Select IP Range.
- Start IP: Set a start IP address for the network range, for example, 10.108.10.100.
- End IP: Set an end IP address for the network range, for example, 10.108.10.200.
- Netmask: Set a netmask for the network range, for example, 255.0.0.0.
- Gateway: Set a gateway for the network range, for example, 10.0.0.1.
- IP Allocation Policy: Optional. After the DHCP service is enabled, IP addresses can be assigned according to the following three allocation policies:
  - Random: The system randomly assigns IP addresses from the network range.
  - Allocate in Order:
    
    The system assigns all available IP addresses from the network range in ascending order. Released IP addresses are assigned in the next allocation.
    
    Example: Assume that the network range is 192.168.0.101～192.168.0.120, within which 192.168.0.101～192.168.0.108 are allocated. If 192.168.0.106 is released, it will be assigned first in the next allocation.
  - Allocate in Cycle:
    
    The system assigns available IP addresses to VM instances from the network range in ascending order. Released IP addresses are assigned when currently available IP addresses are used up.
    
    Example: Assume that the network range is 192.168.0.101～192.168.0.120, within which 192.168.0.101～192.168.0.108 are allocated. If 192.168.0.106 is released, it will be assigned after 192.168.0.120 is used.
- DHCP Service: Choose whether to enable the DHCP service.
  Note:
  
  The DHCP service is a built-in distributed service of the Cloud, which assigns IP addresses only to resources in the Cloud and does not conflict with your existing DHCP server.
  
  By default, the DHCP service is enabled so that IP addresses are automatically assigned to resources in the Cloud. You can customize a DHCP IP or use the DHCP IP that the system assigned according to the IP allocation policy.
  
  If you disable this option, IP addresses are not automatically assigned to resources that use this network. Therefore, you need to manually assign IP addresses to these resources. In addition, you cannot specify a DHCP IP. Neither can the system allocate one.
  - DHCP IP: Optional. Set an IP address for the DHCP server, for example, 10.108.10.101.
    Note:
    
    A DHCP IP is an IP address used by the DHCP service to assign IP addresses to resources that use this L3 network.
    
    If you create an L3 network for the first time with the DHCP service enabled, or if you add the first network range to an L3 network with the DHCP service enabled, you can customize the DHCP IP.
    
    If the L3 network has a DHCP IP, you cannot customize the DHCP IP when you add a network range.
    
    The DHCP IP can be in or outside the added IP range, but it must be an unoccupied IP address in the CIDR block of the added IP range
    
    The IP range determined by the start IP and end IP cannot contain the link-local address 169.254.0.0/16.
    
    If you select random as the IP allocation policy and this field is left blank, the system randomly assigns IP addresses from the added network range.
    
    If you select allocate in order/allocate in cycle as the IP allocation policy and this field is left blank, the system uses the start IP address in the network range as the DHCP IP.
- DNS: Optional. Add a DNS server to provide domain name resolution services for the public network, for example, 114.114.114.114.
Figure 2. Create L3-Public Network
Create an L2 management network and attach it to the corresponding cluster.

For network configuration information, see Management Network Configuration.
On the main menu of ZStack Cloud, choose Resource Center > Network Resource > L2 Network Resources > L2 Network. On the L2 Network page, click Create L2 Network. Then, the Create L2 Network page is displayed. On the displayed page, set the following parameters:
- Zone: By default, the current zone is displayed.
- Name: Set the name as L2-Management Network.
- Description: Optional. Enter a description for the L2 network.
- Type: Select L2NoVlanNetwork.
- Cluster: Select a cluster to be attached, for example, Cluster-1.
- Network Acceleration Mode: You can use different technologies to improve network performance of the L2 network. In this scenario, select Normal.
- NIC Name: Enter a NIC name for the L2 network. For example, em2.
Figure 3. Create L2-Management Network
Create an L3 management network.

For network configuration information, see Management Network Configuration.
On the main menu of ZStack Cloud, choose Resource Center > Network Resource > Dedicated Network > Management Network. On the Management Network page, click Create Management Network. Then, the Create Management Network page is displayed. On the displayed page, set the following parameters:
- Name: Set the name as L3-Management Network.
- Description: Optional. Enter a description for the management network.
- L2 Network: Select the existing L2-Management Network.
- Network Range Method: Select IP Range.
- Start IP: Set a start IP address for the network range, for example, 192.168.29.10.
- End IP: Set an end IP address for the network range, for example, 192.168.29.20.
- Netmask: Set a netmask for the network range, for example, 255.255.255.0.
- Gateway: Set a gateway for the network range, for example, 192.168.29.1.
Figure 4. Create L3-Management Network
Add a vRouter image.
On the main menu of ZStack Cloud, choose Resource Center > Network Resource > vRouter > vRouter Image. On the vRouter Image page, click Add vRouter Image. Then, the Add vRouter Image page is displayed.
Set the following parameters:
- Name: Enter a name for the vRouter image.
- Description: Optional. Enter a description for the vRouter image.
- Image Usage: Specify what the vRouter image is used for. Here, select VPC vRouter.
- CPU Architecture: Select a CPU architecture for the vRouter image. VPC vRouters created from the vRouter image inherit this CPU architecture.
- Backup Storage: Select a backup storage to store the vRouter image.
- Image Path: Enter a URL or upload a local file.
  - URL: Enter the download URL of the vRouter image.
    ZStack Cloud provides you with dedicated VPC vRouter images (KVM). You can download the latest vRouter images from the official website.
    
    Software: ZStack-vRouter-4.8.0.qcow2
    
    Download address: Click here
  - Local File: Upload a vRouter image file that can directly be accessed by the current browser.
    Note:
    
    You can upload the vRouter image to an ImageStore or Ceph backup storage.
    
    A local browser will serve as a transmission relay used for uploading the vRouter image. Do not refresh or stop the current browser, nor stop your management node. Otherwise, you will fail to add the vRouter image.
Create a vRouter offering.
On the displayed page, set the following parameters:
- Zone: By default, the current zone is displayed.
- Name: Enter a name for the vRouter offering.
- Description: Optional. Enter a description for the vRouter offering.
- CPU: Set the number of CPU cores for a vRouter.
  Note: Currently, a vRouter can have up to 240 CPU cores. In an actual production environment, we recommend that you set more than 8 CPU cores for a vRouter.
- Memory: Set the memory size for a vRouter. Unit: MB, GB, and TB. In an actual production environment, we recommend that the memory size greater than 8 GB.
- Image: Select a vRouter image you added before.
  Note: If the L3 public network in the vRouter offering has a network range of the IPv6 type, when you create a VPC vRouter, you must use the vRouter image of version 3.10.0 or later.
- Management Network: Select an L3 management network you created before.
  - A management network is used by the management node to deploy and configure resources such as hosts and VPC vRouters.
  - If a system network is used to manage physical resources, select the system network as the management network.
  - If you use a public network to manage physical resources, select the public network as the management network.
- Public Network: Select a public network you created before.
  - vRouters created from this vRouter offering can provide VPC network services.
Figure 5. Create vRouter Offering
Create a VPC vRouter from the vRouter offering you created in the preceding step.
On the main menu of ZStack Cloud, choose Resource Center > Network Resource > vRouter > VPC vRouter. On the VPC vRouter page, click Create VPC vRouter. Then, the Create VPC vRouter page is displayed. On the displayed page, set the following parameters:
On the displayed page, set the following parameters:
- Name: Enter a name for the VPC vRouter.
- Description: Optional. Enter a description for the VPC vRouter.
- vRouter Offering: Select a vRouter offering you created before.
  Note: A VPC vRouter created from a vRouter offering has a public network and a management network.
- Cluster: Optional. Specify a cluster for the host on which the VPC vRouter is to be started.
- Storage Allocation Policy: Specify how the Cloud allocates a primary storage. The following two policies are supported:
  - System Allocation: The Cloud allocates a primary storage according to the preconfigured policy.
  - Custom: Select a primary storage as needed.
    
    Primary Storage: Select a primary storage for the VPC vRouter.
- Host: Optional. Select a host on which the VPC vRouter is started.
- Default IPv4/IPv6 Address: Optional. Specify a default IP address for the VPC vRouter. If not specified, the Cloud allocates one automatically.
- Assign Management Network IP: Optional. Assign a management network IP to the VPC vRouter.
  Note: To assign a management network IP, make sure that the management network used by the VPC vRouter is separated from the public network the VPC vRouter uses. If the VPC vRouter uses a same network both as its management network and public network, you cannot assign a management network IP.
- DNS: Optional. Set the DNS service for the VPC vRouter. If not specified, 223.5.5.5 will be used.
  Note:
  
  You can set an IPv4 DNS or IPv6 DNS as needed. For example, you can set the IPv4 DNS to 223.5.5.5 or IPv6 DNS to 240C::6644.
  
  Services in the VPC vRouter can access the public network services via DNS. You can also specify the other DNS address if necessary.
  
  For VM instances created by using a VPC network, the DNS is the gateway of the VPC network. The VM traffics are forwarded by a VPC vRouter.
- CPU Pinning: Associate the virtual CPUs (vCPUs) of a VPC vRouter with host pCPUs stringently and allow you to allocate specific pCPUs for the VPC vRouter, thus improving VPC vRouter performances.
  Note:
  
  Pinning Format
  
  In the left input box, set a vCPU range. In the right input box, set a pCPU range. Range format: integer, hyphen(-), and caret (^). Use commas to separate them.
  
  The vCPU range depends on the vRouter offering attached to the VPC vRouter.
  
  The pCPU range depends on the pCPU quantity of the selected cluster or host.
  
  Example: In the left input box, enter 1. In the right input box, enter 0-3,^2. This example indicates that vCPU 1 is stringently associated with pCPU 0, pCPU 1, and pCPU 3, while ^ represents that vCPU 2 is excluded.
Figure 6. Create VPC vRouter
Create an L2 private network and attach it to the corresponding cluster. This L2 private network is used to create an L3 VPC network (VPC Network-1).

For network configuration information, see VPC Network-1 Configuration.
On the main menu of ZStack Cloud, choose Resource Center > Network Resource > L2 Network Resources > L2 Network. On the L2 Network page, click Create L2 Network. Then, the Create L2 Network page is displayed. On the displayed page, set the following parameters:
- Zone: By default, the current zone is displayed.
- Name: Set the name as L2-Private Network.
- Description: Optional. Enter a description for the L2 network.
- Type: Select L2VlanNetwork.
- Cluster: Select a cluster to be attached, for example, Cluster-1.
- Network Acceleration Mode: You can use different technologies to improve network performance of the L2 network. In this scenario, select Normal.
- VLAN ID: Enter 2800.
- NIC Name: Enter a NIC name for the L2 network. For example, em1.
Figure 7. Create L2-Private Network
Create an L3 VPC network (VPC Network-1).

For network configuration information, see VPC Network-1 Configuration.
On the main menu of ZStack Cloud, choose Resource Center > Network Resource > L3 Network Resources > VPC Network. On the VPC Network page, click Create VPC Network. The Create VPC Network page is displayed. On the displayed page, set the following parameters:
- Name: Set the name as VPC Network-1.
- Description: Optional. Enter a description for the VPC network.
- L2 Network: Select the existing L2-Private Network.
- VPC vRouter: Optional. Select the existing VPC vRouter.
- Network Address Type: Select IPv4.
- Network Range Method: Select CIDR.
- CIDR: Set a CIDR block for the VPC network, for example, 192.168.10.0/24.
- Gateway: Set a gateway for the VPC network, for example, 192.168.10.1.
- IP Allocation Policy: Optional. After the DHCP service is enabled, IP addresses can be assigned according to the following three allocation policies:
  - Random: The system randomly assigns IP addresses from the network range.
  - Allocate in Order:
    
    The system assigns all available IP addresses from the network range in ascending order. Released IP addresses are assigned in the next allocation.
    
    Example: Assume that the network range is 192.168.0.101～192.168.0.120, within which 192.168.0.101～192.168.0.108 are allocated. If 192.168.0.106 is released, it will be assigned first in the next allocation.
  - Allocate in Cycle:
    
    The system assigns available IP addresses to VM instances from the network range in ascending order. Released IP addresses are assigned when currently available IP addresses are used up.
    
    Example: Assume that the network range is 192.168.0.101～192.168.0.120, within which 192.168.0.101～192.168.0.108 are allocated. If 192.168.0.106 is released, it will be assigned after 192.168.0.120 is used.
- DHCP Service: Choose whether to enable the DHCP service.
  Note:
  
  The DHCP service is a built-in distributed service of the Cloud, which assigns IP addresses only to resources in the Cloud and does not conflict with your existing DHCP server.
  
  By default, the DHCP service is enabled so that IP addresses are automatically assigned to resources in the Cloud. You can customize a DHCP IP or use the DHCP IP that the system assigned according to the IP allocation policy.
  
  If you disable this option, IP addresses are not automatically assigned to resources that use this network. Therefore, you need to manually assign IP addresses to these resources. In addition, you cannot specify a DHCP IP. Neither can the system allocate one.
  - DHCP IP: Optional. Set an IP address for the DHCP server, for example, 192.168.10.2.
    Note:
    
    A DHCP IP is an IP address used by the DHCP service to assign IP addresses to resources that use this L3 network.
    
    If you create an L3 network for the first time with the DHCP service enabled, or if you add the first network range to an L3 network with the DHCP service enabled, you can customize the DHCP IP.
    
    If the L3 network has a DHCP IP, you cannot customize the DHCP IP when you add a network range.
    
    The DHCP IP can be in or outside the added IP range, but it must be an unoccupied IP address in the CIDR block of the added IP range
    
    The IP range determined by the start IP and end IP cannot contain the link-local address 169.254.0.0/16.
    
    If you select random as the IP allocation policy and this field is left blank, the system randomly assigns IP addresses from the added network range.
    
    If you select allocate in order/allocate in cycle as the IP allocation policy and this field is left blank, the system uses the start IP address in the network range as the DHCP IP.
- DNS: Optional.
Figure 8. Create VPC Network-1
Create an L2 private network and attach it to the corresponding cluster. This L2 private network is used to create an L3 VPC network (VPC Network-2).
Create an L3 VPC network (VPC Network-2).
Use VPC Network-1 and VPC Network-2 to create VM-1 and VM-2, respectively.

On the main menu of ZStack Cloud, choose Resource Center > Resource Pool > Virtual Resource > VM Instance. Click Create VM Instance. Use the existing VPC Network-1 and VPC Network-2 to create VM-1 and VM-2, respectively.
Test the connectivity between VPC Network-1 and VPC Network-2.
Expected result: VPC Netowrk-1 and VPC Network-2 can communicate with each other.
To test the connectivity, follow these steps:
- Log in to VM-1, use the ping command to ping VM-2.
  Figure 9. VM-1 Ping VM-2
- Log in to VM-2, use the ping command to ping VM-1.
  Figure 10. VM-2 ping VM-1

So far, we have introduced the basic deployment of IPv4 VPC network.

IPv6 Basic Deployment

IPv6, also known as Internet Protocol version 6, with an address length of 128 bits, not only solves the problem of insufficient IPv4 address, but it also clears the barrier for multiple access devices to connect to the Internet. ZStack Cloud VPC network supports IPv6 protocol and this chapter will introduce the basic deployment of IPv6 VPC network in detail.

Assume that the customer environment is as follows:

Public Network

Table 1. Public Network Configuration
Public Network	Configuration
NIC	em1
VLAN ID	No VLAN
IP Range	10.108.10.100~10.108.10.200
Netmask	255.0.0.0
Gateway	10.0.0.1
DHCP IP	10.108.10.101

Note: The public network used to create the VPC vRouter supports both IPv4 and IPv6 networks. In this scenario, we use IPv4 as an example.

Management Network

Table 2. Management Network Configuration
Management Network	Configuration
NIC	em2
VLAN ID	No VLAN
IP Range	192.168.29.10~192.168.29.20
Netmask	255.255.255.0
Gateway	192.168.29.1

Note:

The management network used to create the VPC vRouter supports IPv4 network only.
For security and stability reasons, we recommend that you deploy an independent management network and separate it from the public networks.
The management network we mentioned here is the same as that in ZStack Cloud. That is, the management network is the network used to manage hosts, primary storages, and backup storages. If a management network was created before, you can use it directly.

VPC Network-1

Table 3. VPC Network-1 Configuration
VPC Network	Configuration
NIC	em1
VLAN ID	2800
IP CIDR	234e:0:4569::/64
DHCP IP	234e:0:4569::2

VPC Network-2

Table 4. VPC Network-2 Configuration
VPC Network	Configuration
NIC	em1
VLAN ID	2900
IP CIDR	234e:0:456a::/64
DHCP IP	234e:0:456a::2

To deploy a VPC network in the Cloud, follow these steps:

Create an L2 public network and attach it to the corresponding cluster.
Create an L3 public network.
Create an L2 management network and attach it to the corresponding cluster.
Create an L3 management network.
Add a vRouter image.
Create a vRouter offering.
Create a VPC vRouter from the vRouter offering you created in the preceding step.
Create an L2 private network and attach it to the corresponding cluster. This L2 private network is used to create an L3 VPC network.
Create L3 VPC networks and attach it to the VPC vRouter.
Use two VPC networks to create VM instances respectively.
Obtain the IPv6 address of the VM instances.
Test the connectivity between two VPC networks.

Create an L2 public network and attach it to the corresponding cluster.
For network configuration information, see Public Network Configuration.
On the main menu of ZStack Cloud, choose Resource Center > Network Resource > L2 Network Resources > L2 Network. On the L2 Network page, click Create L2 Network. Then, the Create L2 Network page is displayed. On the displayed page, set the following parameters:
- Zone: By default, the current zone is displayed.
- Name: Set the name as L2-Public Network.
- Description: Optional. Enter a description for the L2 network.
- Type: Select L2NoVlanNetwork.
- Cluster: Select a cluster to be attached, for example, Cluster-1.
- Network Acceleration Mode: You can use different technologies to improve network performance of the L2 network. In this scenario, select Normal.
- NIC Name: Enter a NIC name for the L2 network. For example, em1.
Figure 1. Create L2-Public Network
Create an L3 public network.

For network configuration information, see Public Network Configuration.
On the main menu of ZStack Cloud, choose Resource Center > Network Resource > L3 Network Resources > Public Network. On the Public Network page, click Create Public Network. The Create Public Network page is displayed. On the displayed page, set the following parameters:
- Name: Set the name as L3-Public Network.
- Description: Optional. Enter a description for the public network.
- L2 Network: Select the existing L2-Public Network.
- Network Address Type: Select IPv4.
- Network Range Method: Select IP Range.
- Start IP: Set a start IP address for the network range, for example, 10.108.10.100.
- End IP: Set an end IP address for the network range, for example, 10.108.10.200.
- Netmask: Set a netmask for the network range, for example, 255.0.0.0.
- Gateway: Set a gateway for the network range, for example, 10.0.0.1.
- IP Allocation Policy: Optional. After the DHCP service is enabled, IP addresses can be assigned according to the following three allocation policies:
  - Random: The system randomly assigns IP addresses from the network range.
  - Allocate in Order:
    
    The system assigns all available IP addresses from the network range in ascending order. Released IP addresses are assigned in the next allocation.
    
    Example: Assume that the network range is 192.168.0.101～192.168.0.120, within which 192.168.0.101～192.168.0.108 are allocated. If 192.168.0.106 is released, it will be assigned first in the next allocation.
  - Allocate in Cycle:
    
    The system assigns available IP addresses to VM instances from the network range in ascending order. Released IP addresses are assigned when currently available IP addresses are used up.
    
    Example: Assume that the network range is 192.168.0.101～192.168.0.120, within which 192.168.0.101～192.168.0.108 are allocated. If 192.168.0.106 is released, it will be assigned after 192.168.0.120 is used.
- DHCP Service: Choose whether to enable the DHCP service.
  Note:
  
  The DHCP service is a built-in distributed service of the Cloud, which assigns IP addresses only to resources in the Cloud and does not conflict with your existing DHCP server.
  
  By default, the DHCP service is enabled so that IP addresses are automatically assigned to resources in the Cloud. You can customize a DHCP IP or use the DHCP IP that the system assigned according to the IP allocation policy.
  
  If you disable this option, IP addresses are not automatically assigned to resources that use this network. Therefore, you need to manually assign IP addresses to these resources. In addition, you cannot specify a DHCP IP. Neither can the system allocate one.
  - DHCP IP: Optional. Set an IP address for the DHCP server, for example, 10.108.10.101.
    Note:
    
    A DHCP IP is an IP address used by the DHCP service to assign IP addresses to resources that use this L3 network.
    
    If you create an L3 network for the first time with the DHCP service enabled, or if you add the first network range to an L3 network with the DHCP service enabled, you can customize the DHCP IP.
    
    If the L3 network has a DHCP IP, you cannot customize the DHCP IP when you add a network range.
    
    The DHCP IP can be in or outside the added IP range, but it must be an unoccupied IP address in the CIDR block of the added IP range
    
    The IP range determined by the start IP and end IP cannot contain the link-local address 169.254.0.0/16.
    
    If you select random as the IP allocation policy and this field is left blank, the system randomly assigns IP addresses from the added network range.
    
    If you select allocate in order/allocate in cycle as the IP allocation policy and this field is left blank, the system uses the start IP address in the network range as the DHCP IP.
- DNS: Optional. Add a DNS server to provide domain name resolution services for the public network, for example, 114.114.114.114.
Create an L2 management network and attach it to the corresponding cluster.

For network configuration information, see Management Network Configuration.
On the main menu of ZStack Cloud, choose Resource Center > Network Resource > L2 Network Resources > L2 Network. On the L2 Network page, click Create L2 Network. Then, the Create L2 Network page is displayed. On the displayed page, set the following parameters:
- Zone: By default, the current zone is displayed.
- Name: Set the name as L2-Management Network.
- Description: Optional. Enter a description for the L2 network.
- Type: Select L2NoVlanNetwork.
- Cluster: Select a cluster to be attached, for example, Cluster-1.
- Network Acceleration Mode: You can use different technologies to improve network performance of the L2 network. In this scenario, select Normal.
- NIC Name: Enter a NIC name for the L2 network. For example, em2.
Create an L3 management network.

For network configuration information, see Management Network Configuration.
On the main menu of ZStack Cloud, choose Resource Center > Network Resource > Dedicated Network > Management Network. On the Management Network page, click Create Management Network. Then, the Create Management Network page is displayed. On the displayed page, set the following parameters:
- Name: Set the name as L3-Management Network.
- Description: Optional. Enter a description for the management network.
- L2 Network: Select the existing L2-Management Network.
- Network Range Method: Select IP Range.
- Start IP: Set a start IP address for the network range, for example, 192.168.29.10.
- End IP: Set an end IP address for the network range, for example, 192.168.29.20.
- Netmask: Set a netmask for the network range, for example, 255.255.255.0.
- Gateway: Set a gateway for the network range, for example, 192.168.29.1.
Add a vRouter image.
On the main menu of ZStack Cloud, choose Resource Center > Network Resource > vRouter > vRouter Image. On the vRouter Image page, click Add vRouter Image. Then, the Add vRouter Image page is displayed.
Set the following parameters:
- Name: Enter a name for the vRouter image.
- Description: Optional. Enter a description for the vRouter image.
- Image Usage: Specify what the vRouter image is used for. Here, select VPC vRouter.
- CPU Architecture: Select a CPU architecture for the vRouter image. VPC vRouters created from the vRouter image inherit this CPU architecture.
- Backup Storage: Select a backup storage to store the vRouter image.
- Image Path: Enter a URL or upload a local file.
  - URL: Enter the download URL of the vRouter image.
    ZStack Cloud provides you with dedicated VPC vRouter images (KVM). You can download the latest vRouter images from the official website.
    
    Software: ZStack-vRouter-4.8.0.qcow2
    
    Download address: Click here
  - Local File: Upload a vRouter image file that can directly be accessed by the current browser.
    Note:
    
    You can upload the vRouter image to an ImageStore or Ceph backup storage.
    
    A local browser will serve as a transmission relay used for uploading the vRouter image. Do not refresh or stop the current browser, nor stop your management node. Otherwise, you will fail to add the vRouter image.
Create a vRouter offering.
On the displayed page, set the following parameters:
- Zone: By default, the current zone is displayed.
- Name: Enter a name for the vRouter offering.
- Description: Optional. Enter a description for the vRouter offering.
- CPU: Set the number of CPU cores for a vRouter.
  Note: Currently, a vRouter can have up to 240 CPU cores. In an actual production environment, we recommend that you set more than 8 CPU cores for a vRouter.
- Memory: Set the memory size for a vRouter. Unit: MB, GB, and TB. In an actual production environment, we recommend that the memory size greater than 8 GB.
- Image: Select a vRouter image you added before.
  Note: If the L3 public network in the vRouter offering has a network range of the IPv6 type, when you create a VPC vRouter, you must use the vRouter image of version 3.10.0 or later.
- Management Network: Select an L3 management network you created before.
  - A management network is used by the management node to deploy and configure resources such as hosts and VPC vRouters.
  - If a system network is used to manage physical resources, select the system network as the management network.
  - If you use a public network to manage physical resources, select the public network as the management network.
- Public Network: Select a public network you created before.
  - vRouters created from this vRouter offering can provide VPC network services.
Figure 2. Create vRouter Offering
Create a VPC vRouter from the vRouter offering you created in the preceding step.
On the main menu of ZStack Cloud, choose Resource Center > Network Resource > vRouter > VPC vRouter. On the VPC vRouter page, click Create VPC vRouter. Then, the Create VPC vRouter page is displayed. On the displayed page, set the following parameters:
- Name: Enter a name for the VPC vRouter.
- Description: Optional. Enter a description for the VPC vRouter.
- vRouter Offering: Select a vRouter offering you created before.
- Cluster: Optional. Specify a cluster for the host on which the VPC vRouter is to be started.
- Storage Allocation Policy: Specify how the Cloud allocates a primary storage. The following two policies are supported:
  - System Allocation: The Cloud allocates a primary storage according to the preconfigured policy.
  - Custom: Select a primary storage as needed.
    
    Primary Storage: Select a primary storage for the VPC vRouter.
- Host: Optional. Select a host on which the VPC vRouter is started.
- Default IPv6 Address: Optional. Specify a default IP address for the VPC vRouter. If not specified, the Cloud allocates one automatically.
- Assign Management Network IP: Optional. Assign a management network IP to the VPC vRouter.
  Note: To assign a management network IP, make sure that the management network used by the VPC vRouter is separated from the public network the VPC vRouter uses. If the VPC vRouter uses a same network both as its management network and public network, you cannot assign a management network IP.
- DNS: Optional. Set the DNS service for the VPC vRouter. In this scenario, specify 240C::6644.
  Note:
  
  You can set an IPv4 DNS or IPv6 DNS as needed. For example, you can set the IPv4 DNS to 223.5.5.5 or IPv6 DNS to 240C::6644.
  
  Services in the VPC vRouter can access the public network services via DNS. You can also specify the other DNS address if necessary.
  
  For VM instances created by using a VPC network, the DNS is the gateway of the VPC network. The VM traffics are forwarded by a VPC vRouter.
- CPU Pinning: Associate the virtual CPUs (vCPUs) of a VPC vRouter with host pCPUs stringently and allow you to allocate specific pCPUs for the VPC vRouter, thus improving VPC vRouter performances.
  Note:
  
  Pinning Format
  
  In the left input box, set a vCPU range. In the right input box, set a pCPU range. Range format: integer, hyphen(-), and caret (^). Use commas to separate them.
  
  The vCPU range depends on the vRouter offering attached to the VPC vRouter.
  
  The pCPU range depends on the pCPU quantity of the selected cluster or host.
  
  Example: In the left input box, enter 1. In the right input box, enter 0-3,^2. This example indicates that vCPU 1 is stringently associated with pCPU 0, pCPU 1, and pCPU 3, while ^ represents that vCPU 2 is excluded.
Figure 3. Create VPC vRouter
Create an L2 private network and attach it to the corresponding cluster. This L2 private network is used to create an L3 VPC network.

For network configuration information, see VPC Network-1 Configuration.
On the main menu of ZStack Cloud, choose Resource Center > Network Resource > L2 Network Resources > L2 Network. On the L2 Network page, click Create L2 Network. Then, the Create L2 Network page is displayed. On the displayed page, set the following parameters:
- Zone: By default, the current zone is displayed.
- Name: Set the name as L2-VPC-1.
- Description: Optional. Enter a description for the L2 network.
- Type: Select L2VlanNetwork.
- Cluster: Select a cluster to be attached, for example, Cluster-1.
- Network Acceleration Mode: You can use different technologies to improve network performance of the L2 network. In this scenario, select Normal.
- VLAN ID: Enter 2800.
- NIC Name: Enter a NIC name for the L2 network. For example, em1.
Figure 4. Create L2-VPC-1

Similarly, Create L2-VPC-2 and attach it to the corresponding cluster.
Create L3 VPC networks and attach it to the VPC vRouter.

For network configuration information, see VPC Network-1 Configuration.
On the main menu of ZStack Cloud, choose Resource Center > Network Resource > L3 Network Resources > VPC Network. On the VPC Network page, click Create VPC Network. The Create VPC Network page is displayed. On the displayed page, set the following parameters:
- Name: Set the name as L3-VPC-1.
- Description: Optional. Enter a description for the VPC network.
- L2 Network: Select the existing L2-VPC-1.
- VPC vRouter: Optional. Select the existing VPC vRouter.
- Network Address Type: Select IPv6.
- Network Range Method: Select CIDR.
- IP Configuration Mode: Select Stateful-DHCP.
  - Stateful-DHCP: The interface address and other parameters are all configured through DHCP. The IP range method supports stateful DHCP.
  - Stateless-DHCP: The interface address is automatically derived from the route advertisement prefix and the interface Mac address. Other parameters are configured through DHCP.
  - SLAAC: The interface address is automatically derived from the prefix of the route advertisement that also contains other parameters.
- CIDR: Set a CIDR block for the VPC network, for example, 234e:0:4569::/64.
- DHCP Service: Choose whether to enable the DHCP service.
  Note:
  
  The DHCP service is enabled by default. This service automatically assigns an IP address to a VM instance. You can specify an IP address for the DHCP server. If you do not specify, the system assigns a random IP address for the DHCP server.
  
  If you disable the DHCP service, no IP address is automatically assigned to VM instances in the public network. You need to manually configure IP addresses for the VM instances.
  - DHCP IP: Optional. Set an IP address for the DHCP server, for example, 234e:0:4569::2.
    Note:
    
    When you create an L3 network and enable the DHCP service for the first time, or when you add the first network range for an L3 network that has the DHCP service enabled, you can specify an IP address for the DHCP server.
    
    If a DHCP IP is specified for an L3 network, you cannot specify another DHCP IP when you add a network range for the network.
    
    The DHCP IP must be within the CIDR block and must not be in use.
    
    If not specified, the system would randomly specify a DHCP IP within the added IP range for the DHCP server.
    
    The first IP address in the CIDR block is predefined as the default gateway and cannot be used as a DHCP server IP.
- DNS: Provide DNS services for an L3 network. Here, you can specify a DNS address such as 240C::6666.
Figure 5. Create L3-VPC-1

Similarly, create L3-VPC-2 and attach it to the VPC vRouter.
Use two VPC networks to create VM instances respectively.

On the main menu of ZStack Cloud, choose Resource Center > Resource Pool > Virtual Resource > VM Instance. Click Create VM Instance. Use the existing L3-VPC-1 and L3-VPC-2 to create VM-1 and VM-2, respectively.
Obtain the IPv6 address of the VM instances.
You need to manually obtain the IP address of the IPv6 VM instance. Launch the console of the two VM instances and run the following command to obtain the IP address:
```
[root@localhost~]# dhclient -6 eth0  //eth0 indicates the NIC name [root@localhost~]# ifconfig
```
Note: FE80-started address is the link-local address.
Figure 6. Obtain IP Address

In this scenario, the obtained IP addresses are as follows:
- VM-1 IP address: 234e:0:4569::42:e4a6
- VM-2 IP address: 234e:0:456a::1a:ebe9
Test the connectivity between two VPC networks.
Expected result: L3-VPC-1 and L3-VPC-2 can communicate with each other.
To test the connectivity, follow these steps:
- Log in to VM-1, use the ping command to ping VM-2.
  Figure 7. VM-1 ping VM-2
- Log in to VM-2, use the ping command to ping VM-1.
  Figure 8. VM-2 ping VM-1

So far, we have introduced the basic deployment of IPv6 VPC network.

Next Chapter:Typical Scenarios

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