MARVELL-rldot1q-MIB

Description: Marvell Semiconductor IEEE 802.1Q VLAN extension MIB providing enhanced VLAN management objects for Marvell switch ASICs.

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MARVELL-rldot1q-MIB is a Marvell Semiconductor proprietary SNMP module (the rl RADLAN-derived naming used across many OEM switches built on Marvell switch ASICs) extending standard IEEE 802.1Q VLAN bridging with enhanced static unicast forwarding and forwarding-database (FDB) management objects. It exposes tables for statically configured unicast forwarding entries with address ownership information, the transparent-bridging FDB itself, and per-VLAN/per-port FDB entry counts broken down by entry type. Its monitoring value lies in Layer 2 forwarding-plane software status: administrators use it to verify static unicast MAC forwarding entries are correctly owned and applied, to check FDB entry counts per VLAN/port for unexpectedly high or low learned-address counts (which can reveal a MAC flooding attack or a learning failure), and to confirm forwarding-database health generally. It builds directly on IEEE 802.1Q bridging and standard BRIDGE-MIB/Q-BRIDGE-MIB concepts, extending them with Marvell/RADLAN-specific counting and ownership objects. It is typically deployed on switches built around Marvell switching silicon across numerous OEM brands using RADLAN-based switch software. Engineers can download the MARVELL-rldot1q-MIB file directly to load it into their MIB browser.

An administrator would poll rldot1qStaticUnicastTable to check rldot1qStaticUnicastAddressOwner for each configured static unicast entry, confirming static MAC forwarding rules are owned by the expected management source rather than left orphaned. Separately, polling rldot1qTpFdbCountTable, keyed by rldot1qTpFdbCountVlanTag and rldot1qTpFdbCountPort, and reading rldot1qTpFdbCountType alongside rldot1qTpFdbCountCount would reveal whether a specific VLAN/port combination has an abnormally high count of learned dynamic addresses, a symptom of a MAC address flooding condition. Checking rldot1qTpFdbSubStatus in rldot1qTpFdbTable would show whether individual FDB entries are in a valid, learned, or other substatus state.

Marvell vendor-private MIB extending IEEE 802.1Q VLAN bridge objects for advanced switch management.