A3COM-HUAWEI-IF-EXT-MIB

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › A3COM-HUAWEI-IF-EXT-MIB

Organization: Hangzhou H3C Technologies Co., Ltd.

Last Updated: 2009-05-06

Category: Network Interfaces, Vendor: H3C/HH3C

Description: Extends standard IF-MIB interface objects with H3C-specific attributes such as flow control and port type.

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What Is A3COM-HUAWEI-IF-EXT-MIB?

A3COM-HUAWEI-IF-EXT-MIB is an H3C enterprise MIB that extends the standard IETF IF-MIB with additional interface attributes such as flow statistics, port type, and speed history, applicable across routers, switches and other H3C products. It exposes per-interface traffic flow counters (bits and packets in/out over configurable intervals) and interface speed statistics tables, supplementing the basic counters found in the standard interface MIB. Its monitoring value is primarily performance and traffic-throughput visibility: administrators track flow-rate counters over defined intervals to detect traffic spikes, link saturation, or unusually low throughput indicating a failing link, complementing (not replacing) core hardware/link-status data from IF-MIB. It has an explicit, stated dependency on the standard IF-MIB, extending its object model rather than duplicating it. It is deployed broadly across H3C routers and switches wherever finer-grained interface traffic-rate monitoring than plain IF-MIB counters is needed. Network engineers evaluating or troubleshooting this functionality can download the A3COM-HUAWEI-IF-EXT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in A3COM-HUAWEI-IF-EXT-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 routers and switches

Monitoring Examples

An admin would poll the h3cIfFlowStatTable, keyed by interface and h3cIfStatFlowInterval, reading h3cIfStatFlowInBits/h3cIfStatFlowOutBits and h3cIfStatFlowInPkts/h3cIfStatFlowOutPkts to compute real-time throughput per interface over the configured sampling window. The h3cIfSpeedStatTable provides historical speed statistics useful for spotting auto-negotiation flaps or unexpected link-speed downgrades. A sustained rise in h3cIfStatFlowInBytes on a WAN-facing interface, cross-checked against h3cIfStatGlobalFlowInterval, would flag a traffic surge worth investigating.

What Can Be Monitored

  • per-interface inbound/outbound bit rate
  • per-interface inbound/outbound packet rate
  • interface flow sampling interval
  • interface speed statistics history
Imported Objects

From A3COM-HUAWEI-OID-MIB

h3cCommonOBJECT-IDENTITY

From HCNUM-TC

CounterBasedGauge64

From IF-MIB

ifDescrOBJECT-TYPE
ifIndexOBJECT-TYPE

From SNMPv2-SMI

Counter64
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
TimeTicks
Unsigned32

From SNMPv2-TC

DisplayString
RowStatus
TruthValue

How to Use in IPNetwork Monitor

Example using h3cIfInNUcastPkts 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 h3cIfInNUcastPkts 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 non-unicast (i.e., subnetwork- broadcast or subnetwork-multicast) packets delivered to a higher-layer protocol. 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 Counter64-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

Interface extension objects for H3C/Huawei/3Com routers and switches, including flow statistics and interface monitoring.

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Download A3COM-HUAWEI-IF-EXT-MIB