Dahua nvr4208-8p User Manual

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Figure 4-119
4.14 Network
4.14.1.1 TCP/IP
The single network adapter interface is shown as in Figure 4-120 and the dual network adapters interface
is shown as in Figure 4-121.
 Network Mode : Includes multiple access, fault tolerance, and load balancing
 Multiple-address mode: eth0 and eth1 operate separately. You can use the services such as
HTTP, RTP service via etho0 or the eth1. Usually you need to set one default card (default setup
is etho) to request the auto network service form 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. Please note these two cards shall be in the same LAN.
 Load balance: In this mode, device uses bond0 to communicate with the external device. The
eth0 and eth1 are both working now and bearing the network load. Their network load are
general the same. The system is shown as offline once these two cards are both offline. Please
note these two cards shall be in the same LAN.
 Default Network Card: Please select eth0/eth1/bond0(optional) after enable multiple-access
function
 Main Network Card: Please select eth0/eth1 (optional).after enable multiple access function.
Note: The dual-Ethernet port series support the above three configurations and supports
functions as multiple-access, fault-tolerance and load balancing.

Dahua nvr4208-8p Specifications

General

Operating System	Embedded LINUX
IP Camera Input	8 channel
Two-way Talk	1 channel Input, 1 channel Output, RCA
Interface	1 HDMI, 1 VGA
OSD	Camera title, Time, Video loss, Camera lock, Motion detection, Recording
Record Interval	1 ~ 120 min (default: 60 min), Pre-record: 1 ~ 30 sec, Post-record: 10 ~ 300 sec
Ethernet	1 RJ-45 Port (10/100/1000Mbps)
Max. User Access	128 users
Smart Phone	iPhone, iPad, Android
HDD Bays	1
Operating Temperature	-10°C ~ +55°C (+14°F ~ +131°F)
Main Processor	Dual-core embedded processor
Multi-screen Display	1/4/9
Video Detection and Alarm	Motion Detection, MD Zones: 396 (22 x 18), Video Loss, Camera Blank
Alarm input	4
Relay Output	2
Compression	H.265, H.264
Recording Resolution	Up to 8MP
Record Mode	Manual, Schedule (Regular, Continuous), MD (Video detection: Motion Detection, Camera Blank, Video Loss)
PoE	8 ports (IEEE802.3af/at)
Protocols	HTTP, TCP/IP, IPv4/IPv6, UPnP, RTSP, UDP, SMTP, NTP, DHCP, DNS, IP Filter, PPPoE, DDNS, FTP, Alarm Server, IP Search (Support Dahua IP camera, DVR, NVS, etc.)
USB Interface	2 USB2.0
Power Supply	AC 100~240V, 50/60 Hz
Power Consumption	NVR: <10W (without HDD), PoE: Max 25.5W for single port, 130W total
Operating Humidity	10%~90% RH