Configuring an Interface

System > Network > Basic Network> Interface

Interfaces allow inbound and outbound traffic to security zones. An interface must be bound to a security zone with policies configured so that traffic can flow into and from the security zone.

In the Interface page, you can perform the following actions:

Click New and select an interface type to create a new interface.

Click Edit to edit the selected interface.

Click Delete to delete the selected interface.

Click Refresh to refresh the information in the interface table.

Enter the keyword in the text box at the top-right corner and then press Enter to search for the keyword in the table. To clear the keyword, click ×.

Different types of interfaces have varied options. To configure the interface settings, see the following guidance:

Options in the PPPoE Interface dialog:

Option	Description
Basic
Interface Name	Specifies an interface name.
Binding Zone	Specifies a binding type of the interface. If Layer 3 zone is selected, also select a security zone from the Zone drop-down list.
User	Specifies a username for PPPoE.
Password	Specifies the corresponding password.
Confirm Password	Re-enter the password.
Idle Interval	Specifies the idle interface, the unit is minute. If the PPPoE interface has been idling (no traffic) for a certain period, i.e., the specified idle interval, the system will disconnect the Internet connection; if the interface requires Internet access, the system will connect to Internet automatically. The value range is 0 to 10000 minutes. The default value is 30.
Re-connect Interval	Specifies a re-connect interval (i.e., the system will try to re-connect automatically after being disconnected for the interval). The value range is 0 to 10000 seconds. The default value is 0, which means the function is disabled.
Set gateway information from PPPoE server as the default gateway route	With this checkbox selected, the system will set the gateway information provided by PPPoE server as the default gateway route.
Advanced	In the Advanced dialog, configure the advanced settings: Access Concentrator - Specifies a name for the concentrator. Authentication - Hillstone devices will have to pass PPPoE authentication when trying to connect to a PPPoE server. The supported authentication methods include CHAP, PAP and Any (the default, anyone between CHAP and PAP). Click an authentication method. Static IP - You can specify a static IP address and negotiate to use this address to avoid IP change. To specify a static IP address, type it into the box. Netmask - Specifies a netmask for the IP address obtained via PPPoE. Service - Specifies allowed service. The specified service must be the same with that provided by the PPPoE server. If no service is specified, the system will accept any service returned from the server automatically. Distance - Specifies a route distance. The value range is 1 to 255. The default value is 1. Weight - Specifies a route weight. The value range is 1 to 255. The default value is 1.
DDNS	In the DDNS Configuration dialog, configure DDNS options for the interface. For detailed instructions, see Configuring a DDNS.
Management	Specify a management method for the interface. In the Management section, select one or more management method checkboxes.
Properties
Maximum Transmission Unit (MTU)	Specifies a MTU for the interface. The value range is 1280 to 1500/1800 bytes. The default value is 1500. The max MTU may vary from different Hillstone models.
ARP Learning	Select the Enable checkbox to enable the ARP learning function
ARP Timeout	Specifies an ARP timeout for the interface. The value range is 5 to 65535 seconds. The default value is 1200.
Keep-alive IP	Specifies an IP address that receives the interface's keep-alive packets.
Advanced
Shutdown	The system supports interface shutdown. You can not only enforce to shut down a specific interface, but also control the time of shutdown by schedule, or control the shutdown according to the link status of tracked objects. Configure the options as below: Select the Shut down checkbox to enable interface shutdown. To control the shutdown by schedule or tracked objects, select an appropriate checkbox, and then select an appropriate schedule or tracked object from the drop-down list.
Monitor and Backup	Configure the options as below: Select an appropriate checkbox, and then select an appropriate schedule or tracked object from the drop-down list. Select an action: Disable all routes on the interface: During the time specified in the schedule, or when the tracked object fails, the interface will be shut down and its related route will fail; Migrate traffic to backup interface: During the time specified in the schedule, or when the tracked object fails, traffic to the interface will be migrated to the backup interface. In such a case you need to select a backup interface from the Backup interface drop-down list and type the time into the Migrating time box. (Migrating time, 0 to 60 minutes, is the period during which traffic is migrated to the backup interface before the primary interface is switched to the backup interface. During the migrating time, traffic is migrated from the primary interface to the backup interface smoothly. By default the migrating time is set to 0, i.e., all the traffic will be migrated to the backup interface immediately.)

Options in the Lookback Interface dialog:

Option	Description
Basic
Interface Name	Specifies an interface name.
Binding Zone	Specifies a binding type of the interface. If Layer 3 zone is selected, also select a security zone from the Zone drop-down list.
Static IP	IP Address: Specifies an IP address for the interface. Netmask: Specifies a netmask for the interface. Enable DNS Proxy: Select this checkbox to enable DNS proxy for the interface. Advanced：Specifies a management IP and secondary IPs for the interface. Type the IP address into the text box. You can specify up to 6 secondary IP addresses. DHCP: In the DHCP Configuration page, configure the DHCP settings for the interface. For more details, see Configuring a DHCP Server/Relay Proxy. DDNS: In the DDNS Configuration page, configure the DDNS settings for the interface. For more details, see Configuring a DDNS.
Auto-obtain	Set gateway information from DHCP server as the default gateway route: With this checkbox selected, the system will set the gateway information provided by the DHCP server as the default gateway route. Advanced: Distance: Specifies a route distance. The value range is 1 to 255. The default value is 1. Weight: Specifies a route weight. The value range is 1 to 255. The default value is 1. Management Priority: Specifies a priority for the DNS server. Except for static DNS servers, the system can also learn DNS servers dynamically via DHCP or PPPoE. Therefore, you need to configure priorities for the DNS servers, so that the system can choose a DNS server according to its priority during DNS resolution. The priority is represented in numbers from 1 to 255. The larger the number is, the higher the priority is. The priority of static DNS servers is 20. DDNS: In the DDNS Configuration dialog, configure DDNS related options for the interface. For detailed instructions, see Configuring a DDNS.
Management	Specify a management method for the interface.
Properties
Maximum Transmission Unit (MTU)	Specifies a MTU for the interface. The value range is 1280 to 1500/1800 bytes. The default value is 1500.
ARP Learning	Select the Enable checkbox to enable the ARP learning function.
ARP Timeout	Specifies an ARP timeout for the interface. The unit is second. The value range is 5 to 65535 seconds. The default value is 1200.
Keep alive IP	Specifies an IP address that receives the interface's keep-alive packets.
Advanced
Shutdown	The system supports interface shutdown. You can not only enforce to shut down a specific interface, but also control the time of shutdown by schedule, or control the shutdown according to the link status of tracked objects. Configure the options as below: Select the Shut down checkbox to enable interface shutdown. To control the shutdown by schedule or tracked objects, select an appropriate checkbox, and then select an appropriate schedule or tracked object from the drop-down list.
Monitor and Backup	Configure the options as below: Select an appropriate checkbox, and then select an appropriate schedule or tracked object from the drop-down list. Select an action: Disable all routes on the interface: During the time specified in the schedule, or when the tracked object fails, the interface will be shut down and its related route will fail; Migrate traffic to backup interface: During the time specified in the schedule, or when the tracked object fails, traffic to the interface will be migrated to the backup interface. In such a case you need to select a backup interface from the Backup Interface drop-down list and type the time into the Migrating time box. (Migrating time, 0 to 60 minutes, is the period during which traffic is migrated to the backup interface before the primary interface is switched to the backup interface. During the migrating time, traffic is migrated from the primary interface to the backup interface smoothly. By default the migrating time is set to 0, i.e., all the traffic will be migrated to the backup interface immediately.)

Options in the Aggregate Interface dialog:

Option	Description
Basic
Interface Name	Specifies an interface name.
Binding Zone	Specifies a binding type of the interface. If Layer 3 zone is selected, also select a security zone from the Zone drop-down list.
Static IP	IP Address: Specifies an IP address for the interface. Netmask: Specifies a netmask for the interface. Enable DNS Proxy: Select this checkbox to enable DNS proxy for the interface. Advanced：Specifies a management IP and secondary IPs for the interface. Type the IP address into the text box. You can specify up to 6 secondary IP addresses. DHCP: In the DHCP Configuration page, configure the DHCP settings for the interface. For more details, see Configuring a DHCP Server/Relay Proxy. DDNS: In the DDNS Configuration page, configure the DDNS settings for the interface. For more details, see Configuring a DDNS.
Auto-obtain	Set gateway information from DHCP server as the default gateway route: With this checkbox selected, the system will set the gateway information provided by the DHCP server as the default gateway route. Advanced: Distance: Specifies a route distance. The value range is 1 to 255. The default value is 1. Weight: Specifies a route weight. The value range is 1 to 255. The default value is 1. Management Priority: Specifies a priority for the DNS server. Except for static DNS servers, the system can also learn DNS servers dynamically via DHCP or PPPoE. Therefore, you need to configure priorities for the DNS servers, so that the system can choose a DNS server according to its priority during DNS resolution. The priority is represented in numbers from 1 to 255. The larger the number is, the higher the priority is. The priority of static DNS servers is 20. DDNS: In the DDNS Configuration dialog, configure DDNS related options for the interface. For detailed instructions, see Configuring a DDNS.
Management	Specify a management method for the interface.
Binding Port	Specifies a physical port/ports for the aggregate interface by selecting a port/ports from the Member drop-down list. The selected port/ports should neither belong to any other interface nor belong to any security zone.
Properties
Maximum Transmission Unit (MTU)	Specifies a MTU for the interface. The value range is 1280 to 1500/1800 bytes. The default value is 1500.
ARP Learning	Select the Enable checkbox to enable the ARP learning function.
ARP Timeout	Specifies an ARP timeout for the interface. The unit is second. The value range is 5 to 65535 seconds. The default value is 1200.
Keep alive IP	Specifies an IP address that receives the interface's keep-alive packets.
Advanced
Shutdown	The system supports interface shutdown. You can not only enforce to shut down a specific interface, but also control the time of shutdown by schedule, or control the shutdown according to the link status of tracked objects. Configure the options as below: Select the Shut down checkbox to enable interface shutdown. To control the shutdown by schedule or tracked objects, select an appropriate checkbox, and then select an appropriate schedule or tracked object from the drop-down list.
Monitor and Backup	Configure the options as below: Select an appropriate checkbox, and then select an appropriate schedule or tracked object from the drop-down list. Select an action: Disable all routes on the interface: During the time specified in the schedule, or when the tracked object fails, the interface will be shut down and its related route will fail; Migrate traffic to backup interface: During the time specified in the schedule, or when the tracked object fails, traffic to the interface will be migrated to the backup interface. In such a case you need to select a backup interface from the Backup Interface drop-down list and type the time into the Migrating time box. (Migrating time, 0 to 60 minutes, is the period during which traffic is migrated to the backup interface before the primary interface is switched to the backup interface. During the migrating time, traffic is migrated from the primary interface to the backup interface smoothly. By default the migrating time is set to 0, i.e., all the traffic will be migrated to the backup interface immediately.)

Options in the Redundant Interface dialog:

Option	Description
Basic
Interface Name	Specifies an interface name.
Binding Zone	Specifies a binding type of the interface. If Layer 3 zone is selected, also select a security zone from the Zone drop-down list.
Static IP	IP Address: Specifies an IP address for the interface. Netmask: Specifies a netmask for the interface. Enable DNS Proxy: Select this checkbox to enable DNS proxy for the interface. Advanced：Specifies a management IP and secondary IPs for the interface. Type the IP address into the text box. You can specify up to 6 secondary IP addresses. DHCP: In the DHCP Configuration page, configure the DHCP settings for the interface. For more details, see Configuring a DHCP Server/Relay Proxy. DDNS: In the DDNS Configuration page, configure the DDNS settings for the interface. For more details, see Configuring a DDNS.
Auto-obtain	Set gateway information from DHCP server as the default gateway route: With this checkbox selected, the system will set the gateway information provided by the DHCP server as the default gateway route. Advanced: Distance: Specifies a route distance. The value range is 1 to 255. The default value is 1. Weight: Specifies a route weight. The value range is 1 to 255. The default value is 1. Management Priority: Specifies a priority for the DNS server. Except for static DNS servers, the system can also learn DNS servers dynamically via DHCP or PPPoE. Therefore, you need to configure priorities for the DNS servers, so that the system can choose a DNS server according to its priority during DNS resolution. The priority is represented in numbers from 1 to 255. The larger the number is, the higher the priority is. The priority of static DNS servers is 20. DDNS: In the DDNS Configuration dialog, configure DDNS related options for the interface. For detailed instructions, see Configuring a DDNS.
Management	Specify a management method for the interface.
Binding Port	Specifies a physical port/ports for the redundant interface by selecting a port/ports from the Member drop-down list. The selected port/ports should neither belong to any other interface nor belong to any security zone.
Properties
Maximum Transmission Unit (MTU)	Specifies a MTU for the interface. The value range is 1280 to 1500/1800 bytes. The default value is 1500.
ARP Learning	Select the Enable checkbox to enable the ARP learning function.
ARP Timeout	Specifies an ARP timeout for the interface. The unit is second. The value range is 5 to 65535 seconds. The default value is 1200.
Keep alive IP	Specifies an IP address that receives the interface's keep-alive packets.
Advanced
Shutdown	The system supports interface shutdown. You can not only enforce to shut down a specific interface, but also control the time of shutdown by schedule, or control the shutdown according to the link status of tracked objects. Configure the options as below: Select the Shut down checkbox to enable interface shutdown. To control the shutdown by schedule or tracked objects, select an appropriate checkbox, and then select an appropriate schedule or tracked object from the drop-down list.
Monitor and Backup	Configure the options as below: Select an appropriate checkbox, and then select an appropriate schedule or tracked object from the drop-down list. Select an action: Disable all routes on the interface: During the time specified in the schedule, or when the tracked object fails, the interface will be shut down and its related route will fail; Migrate traffic to backup interface: During the time specified in the schedule, or when the tracked object fails, traffic to the interface will be migrated to the backup interface. In such a case you need to select a backup interface from the Backup Interface drop-down list and type the time into the Migrating time box. (Migrating time, 0 to 60 minutes, is the period during which traffic is migrated to the backup interface before the primary interface is switched to the backup interface. During the migrating time, traffic is migrated from the primary interface to the backup interface smoothly. By default the migrating time is set to 0, i.e., all the traffic will be migrated to the backup interface immediately.)

Options in the Ethernet Sub-interface dialog:

Option	Description
Basic
Interface Name	Specifies an interface name.
Binding Zone	Specifies a binding type of the interface. If Layer 3 zone is selected, also select a security zone from the Zone drop-down list.
Static IP	IP Address: Specifies an IP address for the interface. Netmask: Specifies a netmask for the interface. Enable DNS Proxy: Select this checkbox to enable DNS proxy for the interface. Advanced：Specifies a management IP and secondary IPs for the interface. Type the IP address into the text box. You can specify up to 6 secondary IP addresses. DHCP: In the DHCP Configuration page, configure the DHCP settings for the interface. For more details, see Configuring a DHCP Server/Relay Proxy. DDNS: In the DDNS Configuration page, configure the DDNS settings for the interface. For more details, see Configuring a DDNS.
Auto-obtain	Set gateway information from DHCP server as the default gateway route: With this checkbox selected, the system will set the gateway information provided by the DHCP server as the default gateway route. Advanced: Distance: Specifies a route distance. The value range is 1 to 255. The default value is 1. Weight: Specifies a route weight. The value range is 1 to 255. The default value is 1. Management Priority: Specifies a priority for the DNS server. Except for static DNS servers, the system can also learn DNS servers dynamically via DHCP or PPPoE. Therefore, you need to configure priorities for the DNS servers, so that the system can choose a DNS server according to its priority during DNS resolution. The priority is represented in numbers from 1 to 255. The larger the number is, the higher the priority is. The priority of static DNS servers is 20. DDNS: In the DDNS Configuration dialog, configure DDNS related options for the interface. For detailed instructions, see Configuring a DDNS.
Management	Specify a management method for the interface.
Properties
Maximum Transmission Unit (MTU)	Specifies a MTU for the interface. The value range is 1280 to 1500/1800 bytes. The default value is 1500.
ARP Learning	Select the Enable checkbox to enable the ARP learning function.
ARP Timeout	Specifies an ARP timeout for the interface. The unit is second. The value range is 5 to 65535 seconds. The default value is 1200.
Keep alive IP	Specifies an IP address that receives the interface's keep-alive packets.
Advanced
Shutdown	The system supports interface shutdown. You can not only enforce to shut down a specific interface, but also control the time of shutdown by schedule, or control the shutdown according to the link status of tracked objects. Configure the options as below: Select the Shut down checkbox to enable interface shutdown. To control the shutdown by schedule or tracked objects, select an appropriate checkbox, and then select an appropriate schedule or tracked object from the drop-down list.
Monitor and Backup	Configure the options as below: Select an appropriate checkbox, and then select an appropriate schedule or tracked object from the drop-down list. Select an action: Disable all routes on the interface: During the time specified in the schedule, or when the tracked object fails, the interface will be shut down and its related route will fail; Migrate traffic to backup interface: During the time specified in the schedule, or when the tracked object fails, traffic to the interface will be migrated to the backup interface. In such a case you need to select a backup interface from the Backup Interface drop-down list and type the time into the Migrating time box. (Migrating time, 0 to 60 minutes, is the period during which traffic is migrated to the backup interface before the primary interface is switched to the backup interface. During the migrating time, traffic is migrated from the primary interface to the backup interface smoothly. By default the migrating time is set to 0, i.e., all the traffic will be migrated to the backup interface immediately.)

Options in the Aggregate Sub-interface dialog:

Option	Description
Basic
Interface Name	Specifies an interface name.
Binding Zone	Specifies a binding type of the interface. If Layer 3 zone is selected, also select a security zone from the Zone drop-down list.
Static IP	IP Address: Specifies an IP address for the interface. Netmask: Specifies a netmask for the interface. Enable DNS Proxy: Select this checkbox to enable DNS proxy for the interface. Advanced：Specifies a management IP and secondary IPs for the interface. Type the IP address into the text box. You can specify up to 6 secondary IP addresses. DHCP: In the DHCP Configuration page, configure the DHCP settings for the interface. For more details, see Configuring a DHCP Server/Relay Proxy. DDNS: In the DDNS Configuration page, configure the DDNS settings for the interface. For more details, see Configuring a DDNS.
Auto-obtain	Set gateway information from DHCP server as the default gateway route: With this checkbox selected, the system will set the gateway information provided by the DHCP server as the default gateway route. Advanced: Distance: Specifies a route distance. The value range is 1 to 255. The default value is 1. Weight: Specifies a route weight. The value range is 1 to 255. The default value is 1. Management Priority: Specifies a priority for the DNS server. Except for static DNS servers, the system can also learn DNS servers dynamically via DHCP or PPPoE. Therefore, you need to configure priorities for the DNS servers, so that the system can choose a DNS server according to its priority during DNS resolution. The priority is represented in numbers from 1 to 255. The larger the number is, the higher the priority is. The priority of static DNS servers is 20. DDNS: In the DDNS Configuration dialog, configure DDNS related options for the interface. For detailed instructions, see Configuring a DDNS.
Management	Specify a management method for the interface.
Properties
Maximum Transmission Unit (MTU)	Specifies a MTU for the interface. The value range is 1280 to 1500/1800 bytes. The default value is 1500.
ARP Learning	Select the Enable checkbox to enable the ARP learning function.
ARP Timeout	Specifies an ARP timeout for the interface. The unit is second. The value range is 5 to 65535 seconds. The default value is 1200.
Keep alive IP	Specifies an IP address that receives the interface's keep-alive packets.
Advanced
Shutdown	The system supports interface shutdown. You can not only enforce to shut down a specific interface, but also control the time of shutdown by schedule, or control the shutdown according to the link status of tracked objects. Configure the options as below: Select the Shut down checkbox to enable interface shutdown. To control the shutdown by schedule or tracked objects, select an appropriate checkbox, and then select an appropriate schedule or tracked object from the drop-down list.
Monitor and Backup	Configure the options as below: Select an appropriate checkbox, and then select an appropriate schedule or tracked object from the drop-down list. Select an action: Disable all routes on the interface: During the time specified in the schedule, or when the tracked object fails, the interface will be shut down and its related route will fail; Migrate traffic to backup interface: During the time specified in the schedule, or when the tracked object fails, traffic to the interface will be migrated to the backup interface. In such a case you need to select a backup interface from the Backup Interface drop-down list and type the time into the Migrating time box. (Migrating time, 0 to 60 minutes, is the period during which traffic is migrated to the backup interface before the primary interface is switched to the backup interface. During the migrating time, traffic is migrated from the primary interface to the backup interface smoothly. By default the migrating time is set to 0, i.e., all the traffic will be migrated to the backup interface immediately.)

Options in the Redundant Sub-interface dialog:

Option	Description
Basic
Interface Name	Specifies an interface name.
Binding Zone	Specifies a binding type of the interface. If Layer 3 zone is selected, also select a security zone from the Zone drop-down list.
Static IP	IP Address: Specifies an IP address for the interface. Netmask: Specifies a netmask for the interface. Enable DNS Proxy: Select this checkbox to enable DNS proxy for the interface. Advanced：Specifies a management IP and secondary IPs for the interface. Type the IP address into the text box. You can specify up to 6 secondary IP addresses. DHCP: In the DHCP Configuration page, configure the DHCP settings for the interface. For more details, see Configuring a DHCP Server/Relay Proxy. DDNS: In the DDNS Configuration page, configure the DDNS settings for the interface. For more details, see Configuring a DDNS.
Auto-obtain	Set gateway information from DHCP server as the default gateway route: With this checkbox selected, the system will set the gateway information provided by the DHCP server as the default gateway route. Advanced: Distance: Specifies a route distance. The value range is 1 to 255. The default value is 1. Weight: Specifies a route weight. The value range is 1 to 255. The default value is 1. Management Priority: Specifies a priority for the DNS server. Except for static DNS servers, the system can also learn DNS servers dynamically via DHCP or PPPoE. Therefore, you need to configure priorities for the DNS servers, so that the system can choose a DNS server according to its priority during DNS resolution. The priority is represented in numbers from 1 to 255. The larger the number is, the higher the priority is. The priority of static DNS servers is 20. DDNS: In the DDNS Configuration dialog, configure DDNS related options for the interface. For detailed instructions, see Configuring a DDNS.
Management	Specify a management method for the interface.
Properties
Maximum Transmission Unit (MTU)	Specifies a MTU for the interface. The value range is 1280 to 1500/1800 bytes. The default value is 1500.
ARP Learning	Select the Enable checkbox to enable the ARP learning function.
ARP Timeout	Specifies an ARP timeout for the interface. The unit is second. The value range is 5 to 65535 seconds. The default value is 1200.
Keep alive IP	Specifies an IP address that receives the interface's keep-alive packets.
Advanced
Shutdown	The system supports interface shutdown. You can not only enforce to shut down a specific interface, but also control the time of shutdown by schedule, or control the shutdown according to the link status of tracked objects. Configure the options as below: Select the Shut down checkbox to enable interface shutdown. To control the shutdown by schedule or tracked objects, select an appropriate checkbox, and then select an appropriate schedule or tracked object from the drop-down list.
Monitor and Backup	Configure the options as below: Select an appropriate checkbox, and then select an appropriate schedule or tracked object from the drop-down list. Select an action: Disable all routes on the interface: During the time specified in the schedule, or when the tracked object fails, the interface will be shut down and its related route will fail; Migrate traffic to backup interface: During the time specified in the schedule, or when the tracked object fails, traffic to the interface will be migrated to the backup interface. In such a case you need to select a backup interface from the Backup Interface drop-down list and type the time into the Migrating time box. (Migrating time, 0 to 60 minutes, is the period during which traffic is migrated to the backup interface before the primary interface is switched to the backup interface. During the migrating time, traffic is migrated from the primary interface to the backup interface smoothly. By default the migrating time is set to 0, i.e., all the traffic will be migrated to the backup interface immediately.)

Options in the VSwitch Interface dialog:

Option	Description
Basic
Interface Name	Specifies an interface name.
Binding Zone	Specifies a binding type of the interface. If Layer 3 zone is selected, also select a security zone from the Zone drop-down list.
Static IP	IP Address: Specifies an IP address for the interface. Netmask: Specifies a netmask for the interface. Enable DNS Proxy: Select this checkbox to enable DNS proxy for the interface. Advanced：Specifies a management IP and secondary IPs for the interface. Type the IP address into the text box. You can specify up to 6 secondary IP addresses. DHCP: In the DHCP Configuration page, configure the DHCP settings for the interface. For more details, see Configuring a DHCP Server/Relay Proxy. DDNS: In the DDNS Configuration page, configure the DDNS settings for the interface. For more details, see Configuring a DDNS.
Auto-obtain	Set gateway information from DHCP server as the default gateway route: With this checkbox selected, the system will set the gateway information provided by the DHCP server as the default gateway route. Advanced: Distance: Specifies a route distance. The value range is 1 to 255. The default value is 1. Weight: Specifies a route weight. The value range is 1 to 255. The default value is 1. Management Priority: Specifies a priority for the DNS server. Except for static DNS servers, the system can also learn DNS servers dynamically via DHCP or PPPoE. Therefore, you need to configure priorities for the DNS servers, so that the system can choose a DNS server according to its priority during DNS resolution. The priority is represented in numbers from 1 to 255. The larger the number is, the higher the priority is. The priority of static DNS servers is 20. DDNS: In the DDNS Configuration dialog, configure DDNS related options for the interface. For detailed instructions, see Configuring a DDNS.
Management	Specify a management method for the interface.
Properties
Maximum Transmission Unit (MTU)	Specifies a MTU for the interface. The value range is 1280 to 1500/1800 bytes. The default value is 1500.
ARP Learning	Select the Enable checkbox to enable the ARP learning function.
ARP Timeout	Specifies an ARP timeout for the interface. The unit is second. The value range is 5 to 65535 seconds. The default value is 1200.
Keep alive IP	Specifies an IP address that receives the interface's keep-alive packets.
Advanced
Shutdown	The system supports interface shutdown. You can not only enforce to shut down a specific interface, but also control the time of shutdown by schedule, or control the shutdown according to the link status of tracked objects. Configure the options as below: Select the Shut down checkbox to enable interface shutdown. To control the shutdown by schedule or tracked objects, select an appropriate checkbox, and then select an appropriate schedule or tracked object from the drop-down list.
Monitor and Backup	Configure the options as below: Select an appropriate checkbox, and then select an appropriate schedule or tracked object from the drop-down list. Select an action: Disable all routes on the interface: During the time specified in the schedule, or when the tracked object fails, the interface will be shut down and its related route will fail; Migrate traffic to backup interface: During the time specified in the schedule, or when the tracked object fails, traffic to the interface will be migrated to the backup interface. In such a case you need to select a backup interface from the Backup Interface drop-down list and type the time into the Migrating time box. (Migrating time, 0 to 60 minutes, is the period during which traffic is migrated to the backup interface before the primary interface is switched to the backup interface. During the migrating time, traffic is migrated from the primary interface to the backup interface smoothly. By default the migrating time is set to 0, i.e., all the traffic will be migrated to the backup interface immediately.)

Options in the VLAN Interface dialog:

Option	Description
Basic
Interface Name	Specifies an interface name.
Binding Zone	Specifies a binding type of the interface. If Layer 3 zone is selected, also select a security zone from the Zone drop-down list.
Static IP	IP Address: Specifies an IP address for the interface. Netmask: Specifies a netmask for the interface. Enable DNS Proxy: Select this checkbox to enable DNS proxy for the interface. Advanced：Specifies a management IP and secondary IPs for the interface. Type the IP address into the text box. You can specify up to 6 secondary IP addresses. DHCP: In the DHCP Configuration page, configure the DHCP settings for the interface. For more details, see Configuring a DHCP Server/Relay Proxy. DDNS: In the DDNS Configuration page, configure the DDNS settings for the interface. For more details, see Configuring a DDNS.
Auto-obtain	Set gateway information from DHCP server as the default gateway route: With this checkbox selected, the system will set the gateway information provided by the DHCP server as the default gateway route. Advanced: Distance: Specifies a route distance. The value range is 1 to 255. The default value is 1. Weight: Specifies a route weight. The value range is 1 to 255. The default value is 1. Management Priority: Specifies a priority for the DNS server. Except for static DNS servers, the system can also learn DNS servers dynamically via DHCP or PPPoE. Therefore, you need to configure priorities for the DNS servers, so that the system can choose a DNS server according to its priority during DNS resolution. The priority is represented in numbers from 1 to 255. The larger the number is, the higher the priority is. The priority of static DNS servers is 20. DDNS: In the DDNS Configuration dialog, configure DDNS related options for the interface. For detailed instructions, see Configuring a DDNS.
Management	Specify a management method for the interface.
Properties
Maximum Transmission Unit (MTU)	Specifies a MTU for the interface. The value range is 1280 to 1500/1800 bytes. The default value is 1500.
ARP Learning	Select the Enable checkbox to enable the ARP learning function.
ARP Timeout	Specifies an ARP timeout for the interface. The unit is second. The value range is 5 to 65535 seconds. The default value is 1200.
Keep alive IP	Specifies an IP address that receives the interface's keep-alive packets.
Advanced
Shutdown	The system supports interface shutdown. You can not only enforce to shut down a specific interface, but also control the time of shutdown by schedule, or control the shutdown according to the link status of tracked objects. Configure the options as below: Select the Shut down checkbox to enable interface shutdown. To control the shutdown by schedule or tracked objects, select an appropriate checkbox, and then select an appropriate schedule or tracked object from the drop-down list.
Monitor and Backup	Configure the options as below: Select an appropriate checkbox, and then select an appropriate schedule or tracked object from the drop-down list. Select an action: Disable all routes on the interface: During the time specified in the schedule, or when the tracked object fails, the interface will be shut down and its related route will fail; Migrate traffic to backup interface: During the time specified in the schedule, or when the tracked object fails, traffic to the interface will be migrated to the backup interface. In such a case you need to select a backup interface from the Backup Interface drop-down list and type the time into the Migrating time box. (Migrating time, 0 to 60 minutes, is the period during which traffic is migrated to the backup interface before the primary interface is switched to the backup interface. During the migrating time, traffic is migrated from the primary interface to the backup interface smoothly. By default the migrating time is set to 0, i.e., all the traffic will be migrated to the backup interface immediately.)