CISCO-UNIFIED-COMPUTING-NWCTRL-MIB

Description: Network control policy definitions specifying link-failure action and MAC registration mode for Cisco UCS vNICs

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CISCO-UNIFIED-COMPUTING-NWCTRL-MIB is part of Cisco's Unified Computing System (UCS) management information model, covering Network Control policies that govern vNIC (virtual network interface card) behavior on UCS blade/rack servers managed through UCS Manager. It exposes a definition table describing each network-control policy's distinguished name, CDP (Cisco Discovery Protocol) enable setting, uplink-failure action, and MAC address registration mode. Its monitoring value is configuration-status oriented rather than counter-based: administrators use it to confirm which uplink-failure action (e.g., link-down propagation) and MAC registration mode is applied to a given vNIC policy, which directly affects server network failover behavior during a fabric interconnect uplink failure. It is one module within Cisco's broader Unified Computing System MIB suite and depends on that model's general policy/managed-object (Dn/Rn) addressing scheme shared across UCS MIBs. It is typically deployed in Cisco UCS blade and rack server environments managed by UCS Manager or UCS Central. Engineers can download the CISCO-UNIFIED-COMPUTING-NWCTRL-MIB file directly to load it into their MIB browser.

An administrator would poll cucsNwctrlDefinitionTable/cucsNwctrlDefinitionEntry, keyed by cucsNwctrlDefinitionInstanceId, and check cucsNwctrlDefinitionUplinkFailAction to confirm whether a vNIC policy is configured to bring the host-facing link down or leave it up when its uplink fails, which explains failover behavior seen during a fabric interconnect outage. cucsNwctrlDefinitionCdp would be reviewed to verify CDP is enabled as expected for neighbor discovery, and cucsNwctrlDefinitionMacRegisterMode checked to confirm MAC learning behavior matches policy. cucsNwctrlDefinitionDn/cucsNwctrlDefinitionName let an operator map a given policy instance back to its logical name in UCS Manager.

Management information base for Cisco Unified Computing System network controller operations. Provides SNMP access to network management objects for UCS infrastructure components and network fabric monitoring.