User guide

Chapter 1
Introduction
RUGGEDCOM ROS
User Guide
12 ModBus Management Support
Table: Proprietary Traps
Trap MIB
genericTrap
powerSupplyTrap
swUpgradeTrap
cfgChangeTrap
weakPasswordTrap
defaultKeysTrap
RUGGEDCOM-TRAPS-MIB
Generic traps carry information about events in their severity and description objects. They are sent at the same
time an alarm is generated for the device. The following are examples of RUGGEDCOM generic traps:
NOTE
Information about generic traps can be retrieved using the CLI command alarms. For more
information about the alarms command, refer to Section 2.6.1, “Available CLI Commands”.
Table: Generic Traps
Trap Severity
heap error Alert
NTP server failure notification
real time clock failure Error
failed password Warning
MAC address not learned by switch fabric Warning
BootP client: TFTP transfer failure Error
received looped back BPDU Error
received two consecutive confusing BPDUs on port, forcing down Error
The device generates the following traps when specific events occur:
Table: Event-Based Traps
Trap MIB Event
rcRstpNewTopology RUGGEDCOM-STP-MIB This trap is generated when the device
topology becomes stable after a topology
change occurs on a switch port.
Section 1.6
ModBus Management Support
Modbus management support in RUGGEDCOM devices provides a simple interface for retrieving basic status
information. ModBus support simplifies the job of SCADA (Supervisory Control and Data Acquisition) system
integrators by providing familiar protocols for retrieving RUGGEDCOM device information. ModBus provides
mostly read-only status information, but there are some writable registers for operator commands.
The ModBus protocol PDU (Protocol Data Unit) format is as follows: