41Figure 2-352.8 NetworkThe interface is shown as in Figure 2-36. IP Version: There are two options: IPv4 and IPv6. Right now, system supports these two IPaddress format and you can access via them. MAC Address: The host in the LAN can get a unique MAC address. It is for you to access inthe LAN. It is read-only. DHCP: It is to auto search IP. When enable DHCP function, you cannot modify IPAddress/Subnet Mask/Gateway. These values are from DHCP function. If you have notenabled DHCP function, IP Address/Subnet Mask/Gateway display as zero. You need todisable DHCP function to view current IP information. IP Address: Here you can input the corresponding number to input IP address. Then you canset the corresponding subnet mask the default gateway. Gateway: Here you can input the default gateway. Please note system needs to check thevalidity of all IPv6 addresses. The IP address and the default gateway shall be in the same IPsection. That is to say, the specified length of the subnet prefix shall have the same string. Preferred DNS server: DNS server IP address. Alternate DNS server: DNS server alternate address. MTU: It is to set MTU value of the network adapter. The value ranges from 1280-1500 bytes.The default setup is 1500 bytes. Please note MTU modification may result in network adapterreboot and network becomes off. That is to say, MTU modification can affect current networkservice. System may pop up dialogue box for you to confirm setup when you want to changeMTU setup. Click OK button to confirm current reboot, or you can click Cancel button toterminate current modification. Before the modification, you can check the MTU of thegateway; the MTU of the DVR shall be the same as or is lower than the MTU of the gateway.Please input thecorresponding informationhere, if you just upload theimage FTP.