TCP/IP. IC Realtime NVR-8128K-DR

Figure 3-93

3.11 Network

3.11.1 TCP/IP

From main menu->Setting->Network->TCP/IP, the interface is shown as in Figure 3-94.

 IP Version: There are two options: IPv4 and IPv6. Right now, system supports these two IP address format and you can access via them.

 Preferred DNS server: DNS server IP address.

 Alternate DNS server: DNS server alternate address.

 Default card: It is to set default network card.

 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.

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Figure 3-94

Click Edit button

, you can go to the following interface. See Figure 3-95.

 Network mode:

 Single NIC: eth1/eth2/ eth3/eth4 operate separately. You can use the services such as HTTP,

RTP service via eth1/eth2/ eth3/eth4. Usually you need to set one default card (default setup is eth1) to request the auto network service from the device-end such as DHCP, email, FTP and etc. In multiple-address mode, system network status is shown as offline once one card is offline.

 Network fault-tolerance: In this mode, device uses bond0 to communicate with the external devices. You can focus on one host IP address. At the same time, you need to set one master card. Usually there is only one running card (master card).System can enable alternate card when the master card is malfunction. The system is shown as offline once these two cards are both offline.

 Load balance: In this mode, device uses bond0 to communicate with the external device. The eth1/eth2/ eth3/eth4 are working now and bearing the network load. Their network load are general the same. The system is shown as offline once all cards are offline.

 Note: Different series products have different Ethernet port amount.

 NIC member: You can check the box here to select the bind cards.

 This mode is for fault-tolerance or load balance mode only.

 The network cards number shall be equal to or more than 2.

 The different types of cards such as fiber card or the Ethernet card can not binding together.

 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.

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 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. Right now, the value here is for read-only.

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.

After completing all the setups please click OK button.

Tips

Click button to cancel card binding.

Figure 3-95

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