AT-SMI-MIB

MIB Reference — IPNetwork Monitor · Updated September 09, 2026

All MIBsAT-SMI-MIB

Organization: Allied Telesis, Inc.

Last Updated: 2010-06-15

Category: SNMP Framework, Vendor: Allied Telesis

Description: Defines the Structure of Management Information (SMI) and root OID hierarchy for all Allied Telesis enterprise MIBs.

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 AT-SMI-MIB?

AT-SMI-MIB defines the Structure of Management Information (SMI) and root OID hierarchy for Allied Telesis (Allied Telesyn) enterprise networking equipment, serving as the foundational namespace under which all other Allied Telesis MIB modules register their object identifiers. It contains no runtime data objects itself; it is purely a structural definition establishing the enterprise's private OID branch. Consequently it plays no direct role in reporting hardware or software status such as uptime, temperature, or interface state; that data is exposed by the product-specific Allied Telesis MIBs layered on top of this SMI root. It depends on the standard SNMPv2-SMI framework for enterprise OID assignment administered by IANA, and any lookup of an Allied Telesis AT-SMI-MIB OID ultimately traces back through this module to that IANA-assigned enterprise number. It's present as a foundational module alongside Allied Telesis managed switches, routers, and media converters.

IPNetwork Monitor allows you to monitor SNMP objects defined in AT-SMI-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

  • Allied Telesis x240-10GHXm (2024) — 8-port 90W PoE++ multi-gigabit edge switch with 2 SFP+ uplinks
  • Allied Telesis x240-26GHXm (2024) — 24-port 90W PoE++ multi-gigabit edge switch with 2 SFP+ uplinks

Monitoring Examples

This module defines only the SMI/OID root structure with no sample objects, tables, or scalars, so there is no monitoring scenario to describe; it exists solely to give Allied Telesis product MIBs a registered parent OID under which to expose their own manageable data.

Imported Objects

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-IDENTITY
enterprises

From SNMPv2-TC

TEXTUAL-CONVENTION
OIDs

RFC description

Allied Telesis enterprise root MIB (OID 1.3.6.1.4.1.207) defining the high-level structure for AlliedWare Plus network equipment.

Start monitoring Allied Telesis x240-series edge 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 AT-SMI-MIB