Can a network segment be added to access the network on the AR router

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A network segment can be added on the AR router.

Other related questions:
How are subnets assigned on an AR
When many hosts are distributed on an internal network, the internal host IDs can be divided into multiple subnet IDs to facilitate management. A network can be divided into multiple subnets to conserve IP address space and support flexible IP addressing. Subnetting is implemented within the internal network. The internal network has only one network ID for the external network. When packets are transmitted from the external network to the internal network, the router on the internal network selects a route for the packets based on the subnet ID and finds the destination host. Take subnet division of an IP address in Class B as an example. The subnet mask consists of a string of continuous 1s and 0s. The digit 1 corresponds to the network ID and subnet ID fields, while the digit 0 corresponds to the host ID field. The first 5 bits of the host ID is used as the subnet ID. The subnet ID ranges from 00000 to 11111, allowing a maximum of 32 (25) subnets. Each subnet ID has a subnet mask. For example, the subnet mask of the subnet ID 11111 is 255.255.248.0. After performing an AND operation on the IP address and the subnet mask, you can obtain the network address. Subnetting reduces the available IP addresses. For example, a Class B IP address contains 65534 (216 - 2) host IDs. After 5 bits in the host ID are used as the subnet ID, there can be a maximum of 32 subnets, each having an 11-bit host ID. Each subnet has a maximum of 2046 host IDs (211 - 2, excluding the host IDs with all 1s and all 0s). Therefore, the IP address has a maximum of 65472 (32 x 2046) host IDs, 62 less than the maximum number of host IDs before subnetting.

Whether AR router support to add a network segment through NAT to Internet ?
Yes, it is supported.

Configure VRRP on an AR router and connect the router to a firewall for external network access
The roadmap of configuring VRRP on an AR router and connecting the router to a firewall for external network access is as follows: 1. Configure VRRP on an AR router to implement two-node backup, and configure a virtual IP address. 2. Add the Layer 2 interface of a firewall on the intranet side to the same VLAN, and configure a VLANIF address. 3. Add the physical interface and VLANIF interface of the firewall to a security zone, and configure an inter-zone policy. 4. Configure the next hop for the route from the firewall to the intranet as a VRRP virtual IP address so that a normal link can be switched over to if an active link is interrupted. For details about the configuration, see the URL: Example for Connecting the AR to the Firewall Through VRRP.

Can addresses on the same network segment be configured on different interfaces of an AR
Addresses on the same network segment cannot be allocated to interfaces on an AR. Interfaces on an AR can be configured with IP addresses on network segments that overlap. For example, an interface is assigned IP address 20.1.1.1/16. When you configure IP address 20.1.1.2/24 for the other interface, the system displays a message. However, the configuration is successful. When you configure IP address 20.1.1.2/16 for the other interface, the system displays a message indicating that the address conflicts. The configuration fails. The primary and secondary addresses of an interface can be on network segments that overlap, but must be different. For example, an interface is configured with the primary IP address 20.1.1.1/24. When you configure the secondary IP address 20.1.1.2/16, the system displays a message. However, the configuration is successful. The primary and secondary addresses of interfaces can be on network segments that overlap, but must be different. For example, an interface is configured with IP address 20.1.1.1/16. When you configure IP address 20.1.1.2/24, the system displays a message. However, the configuration is successful.

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