DLINK-3100-rlInterfaces

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Category: Vendor: D-Link

Description: Monitors and configures network interface properties and statistics on D-Link 3100 series switches.

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What Is DLINK-3100-rlInterfaces?

This is a D-Link proprietary MIB module for the 3100 series switches providing detailed interface configuration and status beyond what the standard IF-MIB covers, including physical address type, duplex mode, tagging, and transceiver information. It exposes a per-interface table with administrative and operational duplex mode, back-pressure flow control mode, VLAN tagging mode, transceiver type, and port lock status alongside interface type and index. This MIB is central to monitoring the hardware/software operational state of each switch port: mismatched admin versus operational duplex mode reveals autonegotiation problems, transceiver type identifies unexpected or unsupported optics, and lock status shows whether a port has been administratively secured or has tripped a security lock. It is intended to complement (not replace) the standard IETF IF-MIB, adding vendor-specific detail such as transceiver and tagging mode information not present in the standard MIB. It is used on DLINK-3100 series switches wherever detailed port-level diagnostics are needed, such as troubleshooting link negotiation or SFP compatibility issues. Network engineers evaluating or troubleshooting this functionality can download the DLINK-3100-rlInterfaces file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in DLINK-3100-rlInterfaces. 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

D-Link DGS/DES-3100 series switches

Monitoring Examples

An administrator polling swIfTable for a given swIfIndex can compare swIfDuplexAdminMode to swIfDuplexOperMode to catch a port stuck in half-duplex due to a failed autonegotiation, a common cause of collisions and throughput drops. The swIfTransceiverType field identifies whether an unexpected or third-party SFP module is inserted, useful when troubleshooting link-up failures. swIfLockOperStatus versus swIfLockAdminStatus reveals whether a port security lock has been triggered, and swIfTaggedMode confirms whether the port is correctly passing tagged VLAN traffic.

What Can Be Monitored

interface duplex admin/operational mode
interface tagging mode
transceiver (SFP) type
port lock admin/operational status
back-pressure flow control mode

Imported Objects

From DLINK-3100-MIB

rlIfInterfaces	OBJECT-IDENTITY
swInterfaces	OBJECT-IDENTITY

From IF-MIB

InterfaceIndex
InterfaceIndexOrZero
ifIndex	OBJECT-TYPE

From Q-BRIDGE-MIB

PortList

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString
RowStatus
TEXTUAL-CONVENTION
TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
swIfTable	1.3.6.1.4.1.171.10.94.89.89.43.1		not-accessible	Switch media specific information and configuration of the device interfaces.
swIfEntry	1.3.6.1.4.1.171.10.94.89.89.43.1.1		not-accessible	Defines the contents of each line in the swIfTable table.
INT swIfIndex	1.3.6.1.4.1.171.10.94.89.89.43.1.1.1	INTEGER	read-only	Index to the swIfTable. The interface defined by a particular value of this index is the same interface as identified by the same value of ifIndex (MIB II).
INT swIfPhysAddressType	1.3.6.1.4.1.171.10.94.89.89.43.1.1.2	INTEGER	read-write	This variable indicates whether the physical address assigned to this interface should be the default one or be chosen from the set of reserved physical addresses of the device.
INT swIfDuplexAdminMode	1.3.6.1.4.1.171.10.94.89.89.43.1.1.3	INTEGER	read-write	This variable specifies whether this interface should operate in half duplex or full duplex mode. This specification will take effect only if swIfSpeedDuplexAutoNegotiation is disabled. A value of 'none' is returned if a value of the variable hasn't been set.
INT swIfDuplexOperMode	1.3.6.1.4.1.171.10.94.89.89.43.1.1.4	INTEGER	read-only	This variable indicates whether this interface operates in half duplex or full duplex mode. This variable can have the values hybrid or unknown only for a trunk. unknown - only if trunk operative status is not present.
INT swIfBackPressureMode	1.3.6.1.4.1.171.10.94.89.89.43.1.1.5	INTEGER	read-write	This variable indicates whether this interface activates back pressure when congested.
INT swIfTaggedMode	1.3.6.1.4.1.171.10.94.89.89.43.1.1.6	INTEGER	read-write	If enable, this interface operates in tagged mode, i.e all frames sent out through this interface will have the 802.1Q header. If disabled the frames will not be tagged.
INT swIfTransceiverType	1.3.6.1.4.1.171.10.94.89.89.43.1.1.7	INTEGER	read-only	This variable indicates the transceiver type of this interface.
INT swIfLockAdminStatus	1.3.6.1.4.1.171.10.94.89.89.43.1.1.8	INTEGER	read-write	This variable indicates whether this interface should operate in locked or unlocked mode. In unlocked mode the device learns all MAC addresses from this port and forwards all frames arrived at this port. In locked mode no new MAC addresses are learned and only frames with known source MAC addresses are forwarded.
INT swIfLockOperStatus	1.3.6.1.4.1.171.10.94.89.89.43.1.1.9	INTEGER	read-only	This variable defines whether this interface operates in locked or unlocked mode. It is locked in each of the following two cases: 1) if swLockAdminStatus is set to locked 2) no IP/IPX interface is defined over this interface and no VLAN contains this interface. In unlocked mode the device learns all MAC addresses from this port and forwards all frames arrived at this port. In locked mode no new MAC addresses are learned and only frames with known source MAC addresses are forwarded.
INT swIfType	1.3.6.1.4.1.171.10.94.89.89.43.1.1.10	INTEGER	read-only	This variable specifies the type of interface.
INT swIfDefaultTag	1.3.6.1.4.1.171.10.94.89.89.43.1.1.11	INTEGER	read-only	This variable specifies the default VLAN tag which will be attached to outgoing frames if swIfTaggedMode for this interface is enabled.
INT swIfDefaultPriority	1.3.6.1.4.1.171.10.94.89.89.43.1.1.12	INTEGER	read-write	This variable specifies the default port priority.
ROW swIfStatus	1.3.6.1.4.1.171.10.94.89.89.43.1.1.13	RowStatus	read-write	The status of a table entry. It is used to delete an entry from this table.
INT swIfFlowControlMode	1.3.6.1.4.1.171.10.94.89.89.43.1.1.14	INTEGER	read-write	on - Flow control will be enabled on this interface according to the IEEE 802.3x standard. off - Flow control is disabled. autoNegotiation - Flow control will be enabled or disabled on this interface. If enabled, it will operate as specified by the IEEE 802.3x standard. enabledRx - Flow control will be enabled on this interface for recieved frames. enabledTx - Flow control will be enabled on this interface for transmitted frames. An attempt to set this object to 'enabledRx(4)' or 'enabledTx(5)' will fail on interfaces that do not support operation at greater than 100 Mb/s. In any case, flow control can work only if swIfDuplexOperMode is full.
INT swIfSpeedAdminMode	1.3.6.1.4.1.171.10.94.89.89.43.1.1.15	INTEGER	read-write	This variable specifies the required speed of this interface in bits per second. This specification will take effect only if swIfSpeedDuplexAutoNegotiation is disabled. A value of 10 is returned for 10G. A value of 0 is returned if the value of the variable hasn't been set.
INT swIfSpeedDuplexAutoNegotiation	1.3.6.1.4.1.171.10.94.89.89.43.1.1.16	INTEGER	read-write	If enabled the speed and duplex mode will be set by the device through the autonegotiation process. Otherwise these characteristics will be set according to the values of swIfSpeedAdminMode and swIfSpeedDuplexAutoNegotiation.
INT swIfOperFlowControlMode	1.3.6.1.4.1.171.10.94.89.89.43.1.1.17	INTEGER	read-only	on - Flow control is enabled on this interface according to the IEEE 802.3x standard. off - Flow control is disabled. enabledRx - Flow control is enabled on this interface for recieved frames. enabledTx - Flow control is enabled on this interface for transmitted frames.
INT swIfOperSpeedDuplexAutoNegotiation	1.3.6.1.4.1.171.10.94.89.89.43.1.1.18	INTEGER	read-only	If enabled the speed and duplex are determined by the device through the autonegotiation process. If disabled these characteristics are determined according to the values of swIfSpeedAdminMode and swIfDuplexAdminMode. hybrid - only for a trunk. unknown - only for ports that there operative status is not present.
INT swIfOperBackPressureMode	1.3.6.1.4.1.171.10.94.89.89.43.1.1.19	INTEGER	read-only	This variable indicates the operative back pressure mode of this interface.
INT swIfAdminLockAction	1.3.6.1.4.1.171.10.94.89.89.43.1.1.20	INTEGER	read-write	This variable indicates which action this interface should be taken in locked mode and therefore relevant only in locked mode. Possible actions: discard(1) - every packet is dropped. forwardNormal(2) - every packet is forwarded according to the DST address. discardDisable(3) - drops the first packet and suspends the port.
INT swIfOperLockAction	1.3.6.1.4.1.171.10.94.89.89.43.1.1.21	INTEGER	read-only	This variable indicates which action this interface actually takes in locked mode and therefore relevant only in locked mode. Possible actions: discard(1) - every packet is dropped. forwardNormal(2) - every packet is forwarded according to the DST address. discardDisable(3) - drops the first packet and suspends the port.
T/F swIfAdminLockTrapEnable	1.3.6.1.4.1.171.10.94.89.89.43.1.1.22	TruthValue	read-write	This variable indicates whether to create a SNMP trap in the locked mode.
T/F swIfOperLockTrapEnable	1.3.6.1.4.1.171.10.94.89.89.43.1.1.23	TruthValue	read-only	This variable indicates whether a SNMP trap can be created in the locked mode.
T/F swIfOperSuspendedStatus	1.3.6.1.4.1.171.10.94.89.89.43.1.1.24	TruthValue	read-only	This variable indicates whether the port is suspended or not due to some feature. After reboot this value is false
INT swIfLockOperTrapCount	1.3.6.1.4.1.171.10.94.89.89.43.1.1.25	INTEGER	read-only	This variable indicates the trap counter status per ifIndex (i.e. number of received packets since the last trap sent due to a packet which was received on this ifIndex). It's relevant only in locked mode while trap is enabled.
INT swIfLockAdminTrapFrequency	1.3.6.1.4.1.171.10.94.89.89.43.1.1.26	INTEGER	read-write	This variable indicates the minimal frequency (in seconds) of sending a trap per ifIndex. It's relevant only in locked mode and in trap enabled.
T/F swIfReActivate	1.3.6.1.4.1.171.10.94.89.89.43.1.1.27	TruthValue	read-write	This variable reactivates (enables) an ifIndex (which was suspended)
INT swIfAdminMdix	1.3.6.1.4.1.171.10.94.89.89.43.1.1.28	INTEGER	read-write	The configuration is on a physical port, not include trunks. cross - The interface should force crossover. normal - The interface should not force crossover. auto - Auto mdix is enabled on the interface.
INT swIfOperMdix	1.3.6.1.4.1.171.10.94.89.89.43.1.1.29	INTEGER	read-only	cross - The interface is in crossover mode. normal - The interface is not in crossover mode. unknown - Only for port that its operative status is not present or down.
INT swIfHostMode	1.3.6.1.4.1.171.10.94.89.89.43.1.1.30	INTEGER	read-write	This variable indicates the 802.1X host mode of a port. Relevant when the port's 802.1X control is auto. In addtion multiple-auth was added.
INT swIfSingleHostViolationAdminAction	1.3.6.1.4.1.171.10.94.89.89.43.1.1.31	INTEGER	read-write	This variable indicates which action this interface should take in single authorized. Possible actions: discard - every packet is dropped. forwardNormal - every packet is forwarded according to the DST address. discardDisable - drops the first packet and suspends the port.
INT swIfSingleHostViolationOperAction	1.3.6.1.4.1.171.10.94.89.89.43.1.1.32	INTEGER	read-only	This variable indicates which action this interface actually takes in single authorized. Possible actions: discard(1) - every packet is dropped. forwardNormal(2) - every packet is forwarded according to the DST address. discardDisable(3) - drops the first packet and suspends the port.
T/F swIfSingleHostViolationAdminTrapEnable	1.3.6.1.4.1.171.10.94.89.89.43.1.1.33	TruthValue	read-write	This variable indicates whether to create a SNMP trap in single authorized.
T/F swIfSingleHostViolationOperTrapEnable	1.3.6.1.4.1.171.10.94.89.89.43.1.1.34	TruthValue	read-only	This variable indicates whether a SNMP trap can be created in the single authorized.
INT swIfSingleHostViolationOperTrapCount	1.3.6.1.4.1.171.10.94.89.89.43.1.1.35	INTEGER	read-only	This variable indicates the trap counter status per ifIndex (i.e. number of received packets since the last trap sent due to a packet which was received on this ifIndex). It's relevant only in single authorized while trap is enabled.
INT swIfSingleHostViolationAdminTrapFrequency	1.3.6.1.4.1.171.10.94.89.89.43.1.1.36	INTEGER	read-write	This variable indicates the minimal frequency (in seconds) of sending a trap per ifIndex. It's relevant only in single authorized and in trap enabled.
INT swIfLockLimitationMode	1.3.6.1.4.1.171.10.94.89.89.43.1.1.37	INTEGER	read-write	This variable indicates what is the learning limitation on the locked interface. Possible values: disabled - learning is stopped. The dynamic addresses associated with the port are not aged out or relearned on other port as long as the port is locked. dynamic - dynamic addresses can be learned up to the maximum dynamic addresses allowed on the port. Relearning and aging of the dynamic addresses are enabled. The learned addresses aren't kept after reset. secure-permanent - secure addresses can be learned up to the maximum addresses allowed on the port. Relearning and aging of addresses are disabled. The learned addresses are kept after reset. secure-delete-on-reset - secure addresses can be learned up to the maximum addresses allowed on the port. Relearning and aging of addresses are disabled. The learned addresses are not kept after reset.
INT swIfLockMaxMacAddresses	1.3.6.1.4.1.171.10.94.89.89.43.1.1.38	INTEGER	read-write	This variable defines the maximum number of dynamic addresses that can be asscoiated with the locked interface. It isn't relevant in disabled limitation mode.
INT swIfLockMacAddressesCount	1.3.6.1.4.1.171.10.94.89.89.43.1.1.39	INTEGER	read-only	This variable indicates the actual number of dynamic addresses that can be asscoiated with the locked interface. It isn't relevant in disabled limitation mode.
AUT swIfAdminSpeedDuplexAutoNegotiationLocalCapabilities	1.3.6.1.4.1.171.10.94.89.89.43.1.1.40	AutoNegCapabilitiesBits	read-write	Administrative auto negotiation capabilities of the interface that can be advertised when swIfSpeedDuplexAutoNegotiation is enabled. default bit means advertise all the port's capabilities according to its type.
AUT swIfOperSpeedDuplexAutoNegotiationLocalCapabilities	1.3.6.1.4.1.171.10.94.89.89.43.1.1.41	AutoNegCapabilitiesBits	read-only	Operative auto negotiation capabilities of the remote link. unknown bit means that port operative status is not up.
AUT swIfSpeedDuplexNegotiationRemoteCapabilities	1.3.6.1.4.1.171.10.94.89.89.43.1.1.42	AutoNegCapabilitiesBits	read-only	Operative auto negotiation capabilities of the remote link. unknown bit means that port operative status is not up, or auto negotiation process not complete, or remote link is not auto negotiation able.
INT swIfAdminComboMode	1.3.6.1.4.1.171.10.94.89.89.43.1.1.43	INTEGER	read-write	This variable specifies the administrative mode of a combo Ethernet interface.
INT swIfOperComboMode	1.3.6.1.4.1.171.10.94.89.89.43.1.1.44	INTEGER	read-only	This variable specifies the operative mode of a combo Ethernet interface.
INT swIfMibVersion	1.3.6.1.4.1.171.10.94.89.89.43.2	INTEGER	read-only	The swIfTable Mib's version, the current version is 3.
INT swIfPortLockSupport	1.3.6.1.4.1.171.10.94.89.89.43.3	INTEGER	read-only	indicates if the locked port package is supported.
OCT swIfPortLockActionSupport	1.3.6.1.4.1.171.10.94.89.89.43.4	OCTET STRING	read-only	indicates which port lock actions are supported: (bit 0 is the most significant bit) bit 0 - discard bit 1 - forwardNormal bit 2 - discardDisable
OCT swIfPortLockTrapSupport	1.3.6.1.4.1.171.10.94.89.89.43.5	OCTET STRING	read-only	indicates with which port lock actions the trap option is supported (e.g. discard indicates that trap is supported only when the portlock action is discard): (bit 0 is the most significant bit) bit 0 - discard bit 1 - forwardNormal bit 2 - discardDisable
swIfPortLockIfRangeTable	1.3.6.1.4.1.171.10.94.89.89.43.6		not-accessible	Port lock interfaces range configuration
swIfPortLockIfRangeEntry	1.3.6.1.4.1.171.10.94.89.89.43.6.1		not-accessible	Defines the contents of each line in the swIfPortLockIfRangeTable table.
INT swIfPortLockIfRangeIndex	1.3.6.1.4.1.171.10.94.89.89.43.6.1.1	INTEGER	read-only	Index to the swIfPortLockIfRangeTable.
POR swIfPortLockIfRange	1.3.6.1.4.1.171.10.94.89.89.43.6.1.2	PortList	read-write	The set of interfaces to which the port lock parameters should be configured
INT swIfPortLockIfRangeLockStatus	1.3.6.1.4.1.171.10.94.89.89.43.6.1.3	INTEGER	read-write	This variable indicates whether the interfaces range should operate in locked or unlocked mode. In unlocked mode the device learns all MAC addresses from these interfaces and forwards all frames arrived at these interfaces. In locked mode no new MAC addresses are learned and only frames with known source MAC addresses are forwarded.
INT swIfPortLockIfRangeAction	1.3.6.1.4.1.171.10.94.89.89.43.6.1.4	INTEGER	read-write	This variable indicates which action for these interfaces should be take in locked mode and therefore relevant only in locked mode. Possible actions: discard(1) - every packet is dropped. forwardNormal(2) - every packet is forwarded according to the DST address. discardDisable(3) - drops the first packet and suspends the port.
T/F swIfPortLockIfRangeTrapEn	1.3.6.1.4.1.171.10.94.89.89.43.6.1.5	TruthValue	read-write	This variable indicates whether to create a SNMP trap in the locked mode.
INT swIfPortLockIfRangeTrapFreq	1.3.6.1.4.1.171.10.94.89.89.43.6.1.6	INTEGER	read-write	This variable indicates the minimal frequency (in seconds) of sending a trap for these interfaces. It's relevant only in locked mode and in trap enabled.
swIfExtTable	1.3.6.1.4.1.171.10.94.89.89.43.7		not-accessible	Display information and configuration of the device interfaces.
swIfExtEntry	1.3.6.1.4.1.171.10.94.89.89.43.7.1		not-accessible	Defines the contents of each row in the swIfExtTable.
INT swIfExtSFPSpeed	1.3.6.1.4.1.171.10.94.89.89.43.7.1.1	INTEGER	read-write	Configure speed of an SFP Ethernet interface.
INT rlIfMibVersion	1.3.6.1.4.1.171.10.94.89.89.54.1	INTEGER	read-only	MIB's version, the current version is 1.
INT rlIfNumOfPhPorts	1.3.6.1.4.1.171.10.94.89.89.54.2	INTEGER	read-only	Total number of physical ports on this device (including all stack units)
OCT rlIfMapOfOnPhPorts	1.3.6.1.4.1.171.10.94.89.89.54.3	OCTET STRING	read-only	Each bit in this octet string indicates that the correspondig port's ifOperStatus is ON if set. The mapping of port number to bits in this octet string is as follows: The port with the L2 interface number 1 is mapped to the least significant bit of the 1st octet, the port with L2 ifNumber 2 to the next significant bit in the 1st octet, port 8 to the most-significant bit of the in the 1st octet, port 9 to the least significant bit of the 2nd octet, etc. and in general, port n to bit corresponding to 2**((n mod 8) -1) in byte n/8 + 1
POR rlIfClearPortMibCounters	1.3.6.1.4.1.171.10.94.89.89.54.4	PortList	read-write	Each bit that is set in this portList represent a port that its mib counters should be reset.
INT rlIfNumOfUserDefinedPorts	1.3.6.1.4.1.171.10.94.89.89.54.5	INTEGER	read-only	The number of user defined ports on this device.
INT rlIfFirstOutOfBandIfIndex	1.3.6.1.4.1.171.10.94.89.89.54.6	INTEGER	read-only	First ifIndex of out-of-band port. This scalar exists only the device has out of band ports.
INT rlIfNumOfLoopbackPorts	1.3.6.1.4.1.171.10.94.89.89.54.7	INTEGER	read-only	The number of loopback ports on this device.
INT rlIfFirstLoopbackIfIndex	1.3.6.1.4.1.171.10.94.89.89.54.8	INTEGER	read-only	First ifIndex of loopback port. This scalar will exists only if rlIfNumOfLoopbackPorts is different from 0.
POR rlIfExistingPortList	1.3.6.1.4.1.171.10.94.89.89.54.9	PortList	read-only	Indicates which ports/trunks exist in the system. It doesn't indicate which are present.
T/F rlIfBaseMACAddressPerIfIndex	1.3.6.1.4.1.171.10.94.89.89.54.10	TruthValue	read-write	Indicates if the system will assign a unique MAC per Ethernet port or not.
INT rlFlowControlCascadeMode	1.3.6.1.4.1.171.10.94.89.89.54.11	INTEGER	read-write	enable disable flow control on cascade ports
INT rlFlowControlCascadeType	1.3.6.1.4.1.171.10.94.89.89.54.12	INTEGER	read-write	define which type of ports will be affected by flow control on cascade ports
T/F rlFlowControlRxPerSystem	1.3.6.1.4.1.171.10.94.89.89.54.13	TruthValue	read-write	define if flow control RX is supported per system.
T/F rlCascadePortProtectionAction	1.3.6.1.4.1.171.10.94.89.89.54.14	TruthValue	read-write	As a result of this set all of the local cascade ports will stop being consider unstable and will be force up.
NUM rlManagementIfIndex	1.3.6.1.4.1.171.10.94.89.89.54.15	InterfaceIndex	read-write	Specify L2 bound management interface index in a single IP address system when configurable management interface is supported.
T/F rlIfClearStackPortsCounters	1.3.6.1.4.1.171.10.94.89.89.54.16	TruthValue	read-write	As a result of this set all counters of all external cascade ports will be cleared.
NUM rlIfClearPortMacAddresses	1.3.6.1.4.1.171.10.94.89.89.54.17	InterfaceIndexOrZero	read-write	if port is non secure, its all dynamic MAC addresses are cleared. if port is secure, its all secure MAC addresses which have learned or configured are cleared.

RFC description

D-Link switch interface management with auto-negotiation capabilities, speed/duplex modes, flow control, and port configuration.

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Download DLINK-3100-rlInterfaces

What Is DLINK-3100-rlInterfaces?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

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RFC description