ARUBAWIRED-MSTP-MIB

Description: Aruba wired switch ArubaOS-CX Multiple Spanning Tree Protocol instance and port management.

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This is an HPE Aruba proprietary MIB for ArubaOS-CX wired switches that manages the Multiple Spanning Tree Protocol (MSTP), the IEEE 802.1s-derived Layer 2 loop-prevention protocol that supports multiple spanning-tree instances mapped to VLANs. It exposes configuration and state data for MSTP instances and their participating switch ports, covering bridge/region identification, instance-to-VLAN mapping, and per-port spanning-tree roles and states. Its monitoring value is in confirming the software-level Layer 2 topology is stable — an administrator would check root bridge identity and per-port role/state (e.g., root, designated, blocking, forwarding) to detect unwanted topology changes, port flapping, or a switch unexpectedly becoming the root bridge, any of which can signal a network loop or misconfiguration. It implements the IEEE 802.1s/802.1Q Multiple Spanning Tree standard, extending the same conceptual model as the standard BRIDGE-MIB and its MSTP extensions. It is deployed on ArubaOS-CX wired switches in enterprise LANs that use MSTP for VLAN-aware Layer 2 loop prevention. Engineers can download the ARUBAWIRED-MSTP-MIB file directly to load it into their MIB browser.

No specific MSTP object or table names were included in the sampled instrumentation for this module, so a concrete OID-level example can't be given; in general terms, an administrator would poll per-instance root bridge identity and per-port role/state objects to confirm the spanning tree topology is stable, and would investigate if a port unexpectedly transitions to blocking or if the root bridge identity changes, either of which can indicate a topology change or a physical loop.

Multiple Spanning Tree Protocol configuration on HPE Aruba wired switches.