Default gateway: Here you can input the default gateway. Please note system needs to
check the validity of all IPv6 addresses. The IP address and the default gateway shall
be in the same IP section. That is to say, the specified length of the subnet prefix shall
have the same string.
DHCP: This is to auto search IP. When enable DHCP function, you can not modify IP/Subnet
mask /Gateway. These values are from DHCP function. If you have not enabled DHCP
function, IP/Subnet mask/Gateway display as zero. You need to disable DHCP function to
view current IP information. Besides, when PPPoE is operating, you can not modify
IP/Subnet mask /Gateway.
TCP port: Default value is 37777. You can change if necessary.
UDP port: Default value is 37778. You can change if necessary.
HTTP port: Default value is 80.
HTTPS port: Default value is 443.
RTSP port: Default value is 554.
Important: System needs to reboot after you changed and saved any setup of the above
four ports. Please make sure the port values here do not conflict.
Max connection: system Supportsmaximal 128 users. 0 means there is no connection limit.
MTU: This is to set MTU value of the network adapter. The value ranges from 1280-7200
bytes. The default setup is 1500 bytes. Please note MTU modification may result in network
adapter reboot and network becomes off. That is to say, MTU modification can affect current
network service. System may pop up dialog box for you to confirm setup when you want to
change MTU setup. Click OK button to confirm current reboot, or you can click Cancel button
to terminate current modification. Before the modification, you can check the MTU of the
gateway; the MTU of the DVR shall be the same as or is lower than the MTU of the gateway.
In this way, you can reduce packets and enhance network transmission efficiency.
The following MTU value is for reference only:
1500: Ethernet information packet max value and it is also the default value. It is the
typical setup when there is no PPPoE or VPN. It is the default setup of some router,
switch or the network adapter.
1492: Recommend value for PPPoE.
1468: Recommend value for DHCP.
Preferred DNS server: DNS server IP address.
Alternate DNS server: DNS server alternate address.
Transfer mode: Here you can select the priority between fluency/video qualities.
LAN download: System can process the downloaded data first if you enable this function.
The download speed is 1.5X or 2.0X of the normal speed.
Important: For the IP address of IPv6 version, default gateway, preferred DNS and
alternate DNS, the input value shall be 128-digit. It shall not be left in blank.
After completing all the setups please click save button, system goes back to the previous menu.
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