ARUBAWIRED-LOOPPROTECT-MIB

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Organization: HPE/Aruba Networking Division

Last Updated: 2017-11-02

Category: Vendor: Aruba, Wireless and WLAN

Description: Aruba wired switch ArubaOS-CX loop protection detection and port shutdown management.

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What Is ARUBAWIRED-LOOPPROTECT-MIB?

ARUBAWIRED-LOOPPROTECT-MIB is an HP/HPE proprietary extension of the standard Loop Protect MIB concept, implemented for ArubaOS-CX wired switches. It exposes per-port loop-detection configuration and status, including whether loop protection is enabled on a port and whether that port has been automatically shut down after a loop was detected. Its monitoring value is chiefly fault/software-behavior oriented: it lets an operator see when the switch's software has taken protective action, such as disabling a port, in response to a detected Ethernet loop, which is a key early-warning signal distinct from raw hardware health but still central to keeping the device operational. The module explicitly builds on the conventions of "standard Loop Protect MIBs," indicating alignment with prior vendor loop-protection MIB structures rather than an IETF standard. It is deployed on Aruba CX switches in enterprise and campus LANs to prevent broadcast storms from accidental cabling loops, with NOC staff monitoring for auto-disabled ports. Engineers can download the ARUBAWIRED-LOOPPROTECT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in ARUBAWIRED-LOOPPROTECT-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

Aruba CX series wired switches
ArubaOS-CX network switches

Monitoring Examples

An operator polls the per-port loop-protect status objects to see which interfaces currently have loop protection enabled and whether any port has transitioned to a shut-down state after a loop was detected. A port that flips to the shut-down status shortly after a patch-panel change points to an accidental physical loop introduced during cabling work. Comparing the loop-protect shutdown status against the standard interface operational status (ifOperStatus) confirms the port was disabled by this feature rather than a cable or NIC fault, and the port can be manually re-enabled once the loop is removed.

What Can Be Monitored

per-port loop detection enable/status
automatic port shutdown due to loop
loop protection configuration
port re-enable/recovery state

Imported Objects

From ARUBAWIRED-NETWORKING-OID

wndFeatures

OBJECT-IDENTITY

From BRIDGE-MIB

dot1dBasePortEntry

OBJECT-TYPE

From IF-MIB

InterfaceIndex
ifIndex	OBJECT-TYPE

From Q-BRIDGE-MIB

VlanId
VlanIndex
dot1qVlanStaticEntry	OBJECT-TYPE

From SMON-MIB

portCopyEntry

OBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

From SNMPv2-TC

TEXTUAL-CONVENTION
TimeStamp
TruthValue

How to Use in IPNetwork Monitor

Example using arubaWiredLoopProtectPortLoopCount OID:

Select an Aruba CX network switch as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type arubaWiredLoopProtectPortLoopCount into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. This object provides the number of loops detected on a Loop Protection enabled port. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
arubaWiredLoopProtectMIB	1.3.6.1.4.1.47196.4.1.1.3.1			This MIB module contains HP proprietary extensions to the standard Loop Protect MIBs.
arubaWiredLoopProtectObjects	1.3.6.1.4.1.47196.4.1.1.3.1.1
arubaWiredLoopProtect	1.3.6.1.4.1.47196.4.1.1.3.1.1.5
arubaWiredLoopProtectNotifications	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.0
NTF arubaWiredLoopProtectLoopDetectedNotification	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.0.1			A arubaWiredLoopProtectLoopDetectedNotification signifies that a loop is detected by the Loop Protection Protocol. Generation of this notification is controlled by arubaWiredLoopProtectTrapLoopDetectEnable. To prevent excessive notifications, this trap allows only one notifications every 30 seconds. Notifications that are missed due to this limitation are dropped and are not sent later.
NTF arubaWiredLoopProtectVlanLoopDetectedNotification	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.0.2			A arubaWiredLoopProtectVlanLoopDetectedNotification signifies that a loop is detected by the Loop Protection feature while operating in VLAN mode. Generation of this notification is controlled by arubaWiredLoopProtectTrapLoopDetectEnable. To prevent excessive notifications, this trap allows only one notifications every 30 seconds. Notifications that are missed due to this limitation are dropped and are not sent later.
arubaWiredLoopProtectBase	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.1
I32 arubaWiredLoopProtectInterval	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.1.1	Integer32	read-write	The interval in seconds at which Loop Protection packets are transmitted. The default value is 5 seconds.
T/F arubaWiredLoopProtectTrapLoopDetectEnable	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.1.2	TruthValue	read-write	Indicates whether notifications should be sent when a loop is detected on a port. By default this object will have a value of false(2).
I32 arubaWiredLoopProtectEnableTimer	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.1.3	Integer32	read-write	The time in seconds to wait before re-enabling a port disabled by Loop Protection. When a port is disabled by Loop Protection, a re-enable timer for the port is initialized. If the re-enable timer value is specified as zero seconds the port remains disabled, else the port is re-enabled after the specified time.
INT arubaWiredLoopProtectMode	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.1.4	INTEGER	read-write	This object is used to configure the operational mode of Loop Protection feature. The Loop Protection feature can be configured to operate in port mode or VLAN mode.
VID arubaWiredLoopProtectVIDList	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.1.5	VidList	read-write	A list of VLANs on which Loop Protection is enabled.
arubaWiredLoopProtectPort	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.2
arubaWiredLoopProtectPortTable	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.2.1		not-accessible	Per-interface configuration for Loop Protection.
arubaWiredLoopProtectPortEntry	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.2.1.1		not-accessible	Loop Protection configuration information for a single port.
NUM arubaWiredLoopProtectPortInterfaceIndex	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.2.1.1.1	InterfaceIndex	not-accessible	The index value that uniquely identifies the interface to which this entry is applicable. The interface identified by a particular value of this index is the same interface as identified by the same value of the IF-MIB's ifIndex.
T/F arubaWiredLoopProtectPortEnable	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.2.1.1.2	TruthValue	read-write	This object indicates whether the Loop Protection is enabled on a port. The default value is FALSE
T/F arubaWiredLoopProtectPortLoopDetected	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.2.1.1.3	TruthValue	read-only	This object will be set to TRUE when a loop is detected on the port. The value of this object will be reset to FALSE when the port's arubaWiredLoopProtectPortEnable is set to FALSE.
TIM arubaWiredLoopProtectPortLastLoopTime	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.2.1.1.4	TimeStamp	read-only	The value of sysUpTime when a loop was last detected on this port. A value of 0 means that the timestamp has not been set.
C32 arubaWiredLoopProtectPortLoopCountEx	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.2.1.1.5	Counter32	read-only	This object provides the number of loops detected on a Loop Protection enabled port. The value of this object is set to zero when Loop Protection is disabled on a port.
LOO arubaWiredLoopProtectPortReceiverAction	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.2.1.1.6	LoopProtectReceiverAction	read-write	Controls the action taken when a Loop Protection packet is received on this port. When set to 'disableTx' the port that transmitted the packet is disabled. When set to 'noDisable' the transmitting port is not disabled. When set to 'disableTxRx' the ports transmitting and receiving the packets are disabled.
I32 arubaWiredLoopProtectLoopDetectedVlan	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.2.1.1.7	Integer32	read-only	Refers to this object for the port on which loop is detected.
VID arubaWiredLoopProtectPortVlanList	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.2.1.1.8	VidList	read-write	A list of VLANs for this interface in which Loop Protection is enabled.
arubaWiredLoopProtectConformance	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.3
arubaWiredLoopProtectGroups	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.3.1
arubaWiredLoopProtectBaseGroup	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.3.1.4			A collection of objects providing basic instrumentation and control of the HP Loop protection entity.
arubaWiredLoopProtectVLANGroup	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.3.1.10			A collection of objects providing support for Loop Protect per VLAN feature.
arubaWiredLoopProtectCompliances	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.3.2
arubaWiredLoopProtectCompliance	1.3.6.1.4.1.47196.4.1.1.3.1.1.5.3.2.5			The compliance statement for HP Switches with support for arubaWired loop protection objects.

RFC description

Loop protection configuration and management for Aruba wired network switches.

Start monitoring Aruba CX network 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 ARUBAWIRED-LOOPPROTECT-MIB