SONOMA-MIB

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › SONOMA-MIB

Organization: EndRun Technologies LLC

Last Updated: 2018-10-21

Category: GPS and Network Timing

Description: Manages EndRun Technologies GPS-based network timing device synchronization status and timing source configuration.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock status) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

What Is SONOMA-MIB?

SONOMA-MIB is EndRun Technologies' enterprise MIB for their GPS/CDMA-based network timing appliances, which act as NTP (Network Time Protocol) servers synchronized to external time references. It exposes NTP client/server engine statistics such as packet counts, IRQ handling, and timing quality indicators alongside timing-source configuration. Critically for hardware/software status monitoring, it surfaces cntpTimeSinceRst (time since restart, akin to uptime), NTP packet drop/error counters, authentication failures, and time figure-of-merit values that indicate the reliability of the device's synchronized clock output. There is no explicit dependency on other MIBs beyond the standard SNMPv2 conventions, though it may be used alongside standard NTP or system MIBs for broader device health. Typical deployment is in data centers or telecom facilities requiring precise, traceable time synchronization from a GPS/CDMA-referenced appliance. Network engineers evaluating or troubleshooting this functionality can download the SONOMA-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in SONOMA-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

  • EndRun Technologies GPS/CDMA network time server appliance

Monitoring Examples

An admin would poll cntpTimeFigureOfMerit and cntpLeapIndBits to confirm the device's NTP service is reporting a trustworthy, well-synchronized clock, and watch cntpAuthFail and cntpDroppedPkts/cntpIgnoredPkts for signs of misconfigured or malicious NTP clients. Tracking cntpRxPkts, cntpTxPkts, and cntpSentPktsPerSecond over time helps confirm the appliance is actively serving time to its client population without overload, while a sudden change in cntpTimeSinceRst signals an unexpected reboot. A rising cntpUnSentPkts count could reveal the device failing to respond to NTP requests fast enough, indicating a software or resource issue.

What Can Be Monitored

  • time since last restart (uptime)
  • NTP packets received/transmitted/sent per second
  • dropped, ignored, and unsent packet counts
  • authentication failures
  • time figure-of-merit (clock quality)
  • leap indicator bits
Imported Objects

From SNMPv2-SMI

Counter32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
enterprises

From SNMPv2-TC

DisplayString

How to Use in IPNetwork Monitor

Example using cntpTimeSinceRst OID:

Select an EndRun Technologies GPS/CDMA network time server appliance (NTP engine/timing-quality status) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type cntpTimeSinceRst into the Find box to locate it in the OID tree, then select it and click OK. It reports the time since NTP daemon restart. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.
OIDs

RFC description

EndRun Technologies Sonoma CDMA time server and NTP clock monitoring.

Start monitoring EndRun Technologies GPS/CDMA network time server appliance (NTP engine/timing-quality status) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download SONOMA-MIB