How to configure DX NetOps Spectrum to receive and convert Syslog messages into SNMP traps using an Rsyslog server.

Products

• Spectrum
• Network Observability

Issue/Introduction

How to convert Syslog messages as traps using the Rsyslog server in Spectrum?

Environment

• Product: DX NetOps Spectrum
• Version: 22.2 or later
• OS: Linux with Rsyslog installed

Cause

Prerequisites

• rsyslog-snmp package: You must install the rsyslog-snmp package on the Linux host. Without this, Rsyslog will fail to load the omsnmp.so module, resulting in "module name 'omsnmp' is unknown" errors [3].

Resolution

1. Install Rsyslog: Ensure Rsyslog is installed on a server that can reach the SpectroSERVER.
2. Configure Mappings: Use the default Spectrum_RSyslog.conf file provided in the Spectrum installation package [3].
3. Deploy Configuration: Place the configuration file in /etc/rsyslog.d/ and restart the rsyslog daemon.
4. Documentation Link: Refer to the Syslog Messages in Spectrum TechDoc for detailed configuration syntax [1].

Additional Information

Troubleshooting

• Module Errors: If you see could not load module '/usr/lib64/rsyslog/omsnmp.so', verify the rsyslog-snmp package is installed [3].
• Network Capture: If traps are not appearing in Spectrum, run tcpdump -envi any -s0 port 162 -w /tmp/traps.pcap to confirm the Syslog server is forwarding traps to the Spectrum IP [2].

Loopback Restriction: Ensure communication is not occurring over the loopback address (127.0.0.1), as Spectrum will not process these as valid traps for the RsyslogServer model [2].