AGI Security SYS-HC0451S2 - Manual (Page 145)

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 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 DH CP function,
IP/Subnet mask/Gateway display as zero. You need to disable DHCP function to view current IP
infor mation. 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 MT U modification may result in networ k adapter reboot and
network becomes off. That is to say, MT U modification can affect current network service. System
may pop up dialog box for you to confir m setup when you want to change MT U setup. C lick OK
button to confir m current reboot, or you can click Cancel button to ter minate current modification.
Before the modification, you can check the MT U of the gateway; the MT U of the DVR shall be the
same as or is lower than the MT U of the gateway. In this way, you can reduce packets and enhance
network transmission efficiency.
The following MT U 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 nor mal 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 nor mal speed.
After completing all the setups please click save button, system goes back to the previous menu .