Dahua HCVR2108C-S2 Series, User Manual

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
Main Network Card: Please select eth0/eth1 (optional).after enable multiple
access function.
Note: Some series support the above three configurations and supports
functions as multiple-access, fault-tolerance and load balancing.

IP Version: There are two options: IPv4 and IPv6. Right now, system supports these two
IP address 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
in the LAN. It is read-only.

IP address: Here you can use up/down button (

) or input the corresponding
number to input IP address. Then you can set the corresponding subnet mask the
default gateway.

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: It 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.

MTU: It 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.

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.
After completing all the setups please click save button, system goes back to the previous
menu.