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Expert PDU Energy 8311
© 2022 GUDE Systems GmbH
Specifications
Current, differential current type
A
SNMP traps
There are common traps for state changes of the same device resource. For example, a
SwitchEvtPort trap is sent when a port is turned on or off. The state change itself is con-
veyed by the supplied data within the trap.
MQTT published data
Messages on the MQTT channel are sent in JSON format.
Example switch a port: "{"type": "portswitch", "idx": 2, "port": "2", "state": 1, "cause":
{"id": 2, "txt": "http"}, "ts": 1632}"
Console Push Messages
Push messages can be activated on the console channels (Telnet, SSH or serial con-
sole), which output sensor values at timed intervals (every n seconds) or as of a configur-
able change in the magnitude of the sensor value on that channel. The generated mes-
sage always starts with a "#" and ends with a CR/LF.
Example: Switch a port: "#port 2 ON"
If you open a telnet or SSH connection, the push messages are either preconfigured, or
you switch on the push messages temporarily with "console telnet pushmsgs set 1" (or
"console ssh pushmsgs set 1"). From now on, push messages will be sent asynchron-
ously on this channel. The asynchronous nature of the messages can cause problems
on a connection if you send commands yourself at the same time. There are then the
possibilities:
·
Filter all incoming characters between "#" and CR/LF
·
or open a second channel (Telnet, SSH, serial) and switch on the push messages
there.
4.3
IP ACL
IP Access Control List
The IP Access Control List (ACL IP) is a filter for incoming IP packets. If the filter is act-
ive, only the hosts and subnets whose IP addresses are registered in the list, can con-
tact via HTTP or SNMP, and make changes. For incoming connections from unauthor-
ized PCs, the device is not completely transparent. Due to technical restraints, a TCP/IP
connection will be accepted at first, but then rejected directly.
Examples:
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