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172 | Performance Series Network Video Recorder User Guide
Figure 5-37 SNMP Configuration Interface
Configuring Multicast
Multicast is a transmission mode for data packets. When there are multiple hosts to receive the
same data packets, multiple cast is the best option for reducing the bandwidth and the CPU
load. The source host can send out just one data for transit. This function also depends on the
relationship of the group member and the router group.
Table 5-17 SNMP Configurations
Configuration Description
SNMP Port The listening port of the proxy program of the NVR. It is a UDP
port, not a TCP port. This value ranges from
1 to 65535 . The
default is 161 .
Read Community This is a string, and it is a command between the managing
processes and the proxy process. Read Community defines
the authentication, the access control, and the management
relationship between one proxy and one managers’ group.
Ensure that the device and the proxy are the same. The Read
Community reads all the objects the SNMP supports in the
specified name. The default is
Public .
Write Community This is a string, and it is a command between the managing
processes and the proxy process. It defines the
authentication, the access control, and the management
relationship between one proxy and one manager’s group.
Ensure that the device and the proxy are the same. The Write
Community reads, writes, and/or accesses all of the objects
the SNMP supports in the specified name. The default is
Write .
Trap Address The Trap information destination address from the device’s
proxy program.
Trap Port The Trap information destination port from the device’s proxy
program. The Trap port allows the gateway device and the
client-end PC in the LAN to exchange information.
SNMP Version If you check V1 , the system processes only the V1
information.
If you check V2 , the system processes only the V2
information.