HH3C-SYSLOG-MIB

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › HH3C-SYSLOG-MIB

Organization: Hangzhou H3C Tech. Co., Ltd.

Last Updated: 2010-06-09

Category: Technology: Logging/Syslog, Vendor: H3C/HH3C

Description: HH3C MIB for system log (syslog) configuration managing log levels, targets, and notification rules on H3C devices.

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What Is HH3C-SYSLOG-MIB?

HH3C-SYSLOG-MIB is an H3C enterprise MIB for managing the device's syslog subsystem, covering configuration of log channels (console, monitor, SNMP, log buffer), maximum log-host and channel counts, and buffer sizing for both the log buffer and trap buffer. It exposes both configuration objects (channel assignments, buffer size limits) and operational data via the log buffer table, which stores recent log entries for retrieval. This MIB is directly useful for monitoring a device's software/event-status by letting an operator poll the in-memory log buffer (hh3cSyslogLogbufferTable) for recent system events, and confirm the syslog service itself is enabled (hh3cSyslogState) and not silently dropping messages due to an undersized buffer. It complements the standard SNMPv2 notification/trap mechanism, since the SNMP channel (hh3cSyslogSnmpChannel) determines which log severities get forwarded as SNMP notifications. Typical deployment is across the full range of H3C routers and switches for centralized event logging and alerting. Engineers can download the HH3C-SYSLOG-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in HH3C-SYSLOG-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

  • H3C router
  • H3C switch

Monitoring Examples

An operator can poll hh3cSyslogLogbufferTable/hh3cSyslogLogbufferEntry to retrieve recent buffered log messages directly via SNMP, useful when syslog server connectivity is down. hh3cSyslogLogbufferSize versus hh3cSyslogMaxLogbufferSize reveals whether the buffer is near capacity and old messages are being overwritten before collection. hh3cSyslogSnmpChannel and hh3cSyslogMaxTrapbufferSize configuration confirm which severities are eligible to generate SNMP traps, so a gap here would explain why expected alerts aren't firing.

What Can Be Monitored

  • syslog service enable state
  • log buffer contents/size
  • trap buffer size
  • max log-host/channel counts
  • SNMP notification channel config
  • console/monitor channel settings
Imported Objects

From HH3C-OID-MIB

hh3cCommonOBJECT-IDENTITY

From INET-ADDRESS-MIB

InetAddress
InetAddressType

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString
RowStatus
TAddress
TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using hh3cLogbufferOverwrittenMessages OID:

Select an H3C router or switch 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 hh3cLogbufferOverwrittenMessages into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. The number of log messages overwritten in logbuffer. 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

Manages syslog configuration including logging levels, hosts, and timestamps.

Start monitoring H3C routers and switches 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 HH3C-SYSLOG-MIB