Dns Server Address; Socket Functional Characteristics - Ebyte E810 User Manual

Table of Contents

Chengdu Ebyte Electronic Technology Co., Ltd.

（1）Static IP

Static IP needs to be manually set by users. During the setting process, pay attention to write the IP, subnet mask, and

gateway at the same time. It is applicable for scenarios where IP and equipment need to be counted and corresponded.

Advantages: Access to devices that cannot automatically assign IP addresses can be searched through the full network

segment broadcast mode;

Disadvantages: Different IP network segments in different LANs will cause normal TCP / UDP communication not

possible.

（2）DHCP

The main function of DHCP is to dynamically obtain the IP address, Gateway address, DNS server address and other

information from the gateway host, thereby eliminating the tedious steps of setting IP address. It is applicable to scenarios where

there is no requirement on IP and it is not mandatory to have correspondence between IP and DTU.

Advantages: Devices such as access routers that have a DHCP server can communicate directly, reducing the trouble of

setting the IP address gateway and subnet mask;

Disadvantages: E810 (4RS1E) will not work properly when connected to a network without DHCP Serve, such as directly

connected to a computer.

2. Subnet mask is mainly used to determine the network number and host number of the IP address, indicate the number of

subnets, and determine whether the DTU is in the subnet. Subnet mask must be set, the commonly used class C subnet mask:

255.255.255.0, the network number is the first 24 digits, the host number is the last 8 digits, the number of subnets is 255, and

DTUIP is in the range of 255, it is considered to be in this subnet.

3.Gateway refers to the network number of the network where the current IP address of DTU is located. The gateway is the

router's IP address if connected to a device such as a router when connecting to the external network. External network cannot be

accessed correctly if the setting is incorrect. No setting is required(Default) if a device such as a router is not connected.

3.2 DNS Server address

DNS server is mainly used to translate domain names into network-recognizable IP addresses. DNS server address can be set

to enable domain name resolution if the local domain name server is incomplete. Users can also set a specific DNS server address

according to their needs. E810 (4RS1E) will submit a resolution request to the set DNS server when domain name resolution is

required, which is more flexible and reliable to use.

In the static IP mode, the default DNS server address is 61.139.2.69, and the standby DNS server address is 192.168.4.1. In

the DHCP mode, the DNS server address is obtained automatically. DTU supports that domain name server address can be set.

E810 (4RS1E) has four socket operating modes: TCP Client, TCP Server, UDP Client, UDP Server, which can be configured

through the web interface.

E810-DTU(4RS1E) User Manuel

Table of Contents

E810-dtu 4rs1e