User`s manual

VPort 251 User’s Manual System Configuration
The network WITHOUT Multicast
Group 2
Group 2
Group 1
Group 1
Video Stream Group 2
Video Stream Group 1
Group 2
Group 2
Group 1
Group 2Group 2
Video Stream Group 1Video Stream Group 1
Group 1
Group 2Group 2
Group 1Group 1
Video Stream Group 2Video Stream Group 2
Group 1Group 1
The network WITH Multicast
Group 1 Multicast Stream
Group 2 Multicast Stream
IGMP Group 2
IGMP Group 2
IGMP Group 1
IGMP Group 1
Group 1 Multicast StreamGroup 1 Multicast Stream
Group 2 Multicast StreamGroup 2 Multicast Stream
IGMP Group 2
IGMP Group 2
IGMP Group 2
IGMP Group 2
IGMP Group 1
IGMP Group 1
IGMP Group 1
IGMP Group 1
251
1-Channel Video Encoder
TCP,UD P,H TT P,D HC P,S MT P,
FTP,NT P,D NS ,R TS P,I GM P,
QoS,DDNS,SNMP
PTZ
RS-232 or RS-422/485
POWER
1x power input and
1x loop power output
MPEG4 or MJPEG
Video Input
Compression
Ethernet
Protocols
GPIO
Auto 10/100 Mbps
D1x1,Relay Outputx1
1-ch NTSC/PAL
251
1-Channel Video Encoder
TCP,UDP,HTTP,DHCP,SMTP,
FTP,NT P,D NS ,R TS P,I GM P,
QoS,DDNS,SNMP
PTZ
RS-232 or RS-422/485
POWER
1x power input and
1x loop power output
MPEG4 or MJPEG
Video Input
Compression
Ethernet
Protocols
GPIO
Auto 10/100 Mbps
D1x1,Relay Outputx1
1-ch NTSC/PAL
NOTE
The VPort 251 is the source that delivers the multicast video stream. To benefit from the
Multicast protocol, the gateway or network switch should support the multicast filtering function
(such as IGMP Snooping) so that the multicast stream is delivered correctly and precisely. To
learn more about IGMP Snooping, refer to the Moxa EtherDeviceTM series Industrial Ethernet
Switch user’s manual.
4-17