SNMP Not Updating Serial Port Signal Status

Serial Servers & Infrastructure Mangement Portserver TS
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1

Hi All -

I am attempting to monitor a few Digi PortServer TS 2 devices using SNMP. I am able to query the devices with SNMP and am getting results back for various OIDs however the specific OIDs I am interested in don’t seem to be updating with current values as displayed in the CLI.

CLI:

#> display port

Serial port activity:

Port TX RX RTS CTS DSR DCD DTR RI OFC IFC

1 off off off off off off off off off off
2 off off on on on on on off off off

SNMP WALK:

.1.3.6.1.4.1.332.10.11.13.13.1.12.1 = INTEGER: 0
.1.3.6.1.4.1.332.10.11.13.13.1.12.2 = INTEGER: 0
.1.3.6.1.4.1.332.10.11.13.13.1.13.1 = INTEGER: 0
.1.3.6.1.4.1.332.10.11.13.13.1.13.2 = INTEGER: 0
.1.3.6.1.4.1.332.10.11.13.13.1.14.1 = INTEGER: 0
.1.3.6.1.4.1.332.10.11.13.13.1.14.2 = INTEGER: 0
.1.3.6.1.4.1.332.10.11.13.13.1.15.1 = INTEGER: 0
.1.3.6.1.4.1.332.10.11.13.13.1.15.2 = INTEGER: 0
.1.3.6.1.4.1.332.10.11.13.13.1.16.1 = INTEGER: 0
.1.3.6.1.4.1.332.10.11.13.13.1.16.2 = INTEGER: 0
.1.3.6.1.4.1.332.10.11.13.13.1.17.1 = INTEGER: 0
.1.3.6.1.4.1.332.10.11.13.13.1.17.2 = INTEGER: 0

I believe these OIDs are for reporting the serial port signal status - but I could be wrong about this. Am I monitoring the correct SNMP OIDs to report on the serial port signal statuses? I would very much like to see DTR, DCD, DSR, RTS, CTS, etc using SNMP rather than using telnet as it ties up a tty. The specific problem I am seeing is that the SNMP OIDs all seem to always report a state of 0 (off) for each signal line while the CLI reports that the signal status is active. There appears to be a disconnect between the SNMP status and the CLI. Any ideas on different OIDs to monitor or how to resolve this discrepancy would be appreciated.

Regards,

Scott

2

I don’t support the Terminal Server products, but I don’t think SNMP will update a given COM port. What I would suggest is looking at Digi One Family and PortServer TS Family it is possible that the MIB function may be able to be updated via the SNMP management agent.