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• MTU: MTU stands for Maximum Transmission Unit. This field allows the user to set the MTU value of the
network adapter. The value ranges from 1280-7200 bytes. The default value is 1500 bytes. Please note MTU
modification may result in network adapter reboot and the network turning off. That is to say, MTU modification
can affect the current network service. The system may pop up a dialog box to confirm setup when the MTU value
is changed. Click the OK button to confirm current value and reboot or can click the Cancel button to terminate the
current modification. Before the modification, you can check the MTU of the gateway; the MTU of the DVR should
be the same or lower than the MTU of the gateway. This way, packets can be reduced, and the network
transmission efficiency be enhanced. The following MTU values are for reference only.
• 1500: Ethernet information packet maximum 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 routers, switches, and network adapters.
• 1492: Recommend value for PPPoE.
• 1468: Recommend value for DHCP. Preferred DNS server: This field allows the user to enter the DNS server IP
address.
• Alternate DNS server: This field allows the user to enter the Alternate DNS server IP address.
• LAN download: This checkbox allows the user to enable the user to process the downloaded data first. The
download speed is 1.5X or 2.0X compared to the normal streaming speed.
Note: To test the network connections set in this menu, click on the Test button. To apply the settings to your DVR,
click on Apply. If you wish to exit this menu, click on the Back button.
6.2.2. Connection
This screen allows users to configure port connections. It is important that the system is rebooted if any changes
are made to the settings on this screen. Also, ensure that port values do not conflict. Below is a screenshot of the
connection screen:
Below is an explanation of the fields on the Connection settings screen:
• Maximum Connection: This field represents the maximum number of users that can be connected to the DVR at
the same time. The maximum number of users the DVR can support at one time is 128.
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