MELLANOX-XSTP-MIB

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › MELLANOX-XSTP-MIB

Organization: Mellanox Technologies, Inc.

Last Updated: 2017-07-26

Category: STP/RSTP

Description: Manages MSTP/RSTP spanning tree operation on Mellanox Technologies network switches.

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 MELLANOX-XSTP-MIB?

MELLANOX-XSTP-MIB is a Mellanox Technologies, Inc. proprietary MIB (extending the standard BRIDGE-MIB) implementing MSTP (Multiple Spanning Tree Protocol) and PVRST+ (Per-VLAN Rapid Spanning Tree). Its instance table, keyed by instance ID, records bridge ID, designated root, root path cost, root port, bridge priority, and four VLAN-membership bitmask fields, a port table records MST ID, port number, state, priority, path cost, and role, a VLAN table maps VLAN ID to MST instance, and a root-bridge-change notification rounds it out. As a configuration/protocol-status MIB it lets an administrator confirm spanning-tree instance/port role and get alerted when the root bridge changes on a Mellanox switch. It is deployed on Mellanox Technologies switches. Engineers can download the MELLANOX-XSTP-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in MELLANOX-XSTP-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

  • Mellanox Technologies switches

Monitoring Examples

An administrator receives a mellanoxXstpRootBridgeChange notification and checks mellanoxXstpDesignatedRoot to confirm a new root bridge was elected on a Mellanox switch.

What Can Be Monitored

  • MSTP/PVRST+ instance and port role, root-bridge changes
Imported Objects

From BRIDGE-MIB

BridgeId

From MELLANOX-SMI-MIB

mellanoxXstpOBJECT-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32
OIDs

RFC description

Manages MSTP and PVRST+ spanning tree instances for Mellanox network switches.

Start monitoring Mellanox Technologies switch (MSTP/PVRST+ spanning tree) 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 MELLANOX-XSTP-MIB