História stránky

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• Communication line category: TCP/IP-UDP.
• UDP parameters:
  • Host: There are three ways:
    1. The IP address of the particular network interface – datagrams will be transmitted and received only via this interface.
       Example:  192.168.1.10
    2. The symbolic name of a particular network interface.
       Example:  D2SRV_PRIMARY
    3. ANY or ALL -the configured UDP port is opened on all available network interfaces. An optimal network interface should be used for communication based on routing tables. The reception of messages will be performed on all network interfaces.
  • Port: UDP port number (0 through 65535) from which the D2000 KOM process sends requests and receives the responses. If the value is 0, the port number is assigned automatically by OS.
    Note: Ports 161 and 162 are the standard UDP ports used in SNMP but they are often reserved for SNMP agents - that is why it is recommended to choose different ports. Problems can occur with value 0 (zero) if the network uses firewalls and other security measures. Then a specific port needs to be configured on firewalls so that the packets from this port are passed via firewalls.

Note:
If SNMP protocol needs to run in a redundant system, where two instances of the D2000 KOM process are running concurrently on two different computers and the IP address cannot be positively determined in the line configuration, it is appropriate to choose „ANY“ or „ALL“ configuration option or to name the network addresses identically as e.g. SNMP_LAN and assign them a correct IP address in the hosts file of each computer. See example:

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