SW-LAYER2-PORT-MANAGEMENT-MIB

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Category: Switch Management - D-Link

Description: Manages Layer 2 switch port configuration, state, and operational parameters.

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What Is SW-LAYER2-PORT-MANAGEMENT-MIB?

SW-LAYER2-PORT-MANAGEMENT-MIB is a D-Link/Marconi proprietary MIB, registered under the marconi enterprise OID's ES2000 'Golf' product tree, for Layer 2 switch port management on early D-Link ES2000-series switches. Its swL2PortInfoTable reports per-port identity and link data (connector type, description, swL2PortInfoLinkStatus, swL2PortInfoNwayStatus for negotiated speed/duplex), swL2PortCtrlTable exposes extensive per-port configuration — admin enable state, link-alarm trap enable, N-way auto-negotiation mode, 802.3x flow control, half-duplex backpressure, port locking, priority queueing, spanning-tree participation, head-of-line blocking protection, and broadcast-storm rising/falling actions — and swL2PortStTable provides a full statistics set per port (byte/frame counters, CRC errors, oversize/undersize frames, fragments, jabber, collisions/late collisions, and a frame-size histogram). Four traps (swEventPortPartition, swEventlinkChangeEvent, swEventBcastRisingStorm, swEventBcastFallingStorm) notify on port partitioning from excessive collisions, link state changes, and broadcast storm threshold crossings. Monitoring this MIB is useful for diagnosing port-level Layer 2 health — collision storms, CRC errors, or broadcast floods that these switches can be configured to block automatically. It depends on RFC1155-SMI/RFC-1212 SMIv1 conventions and is deployed on legacy D-Link/Marconi ES2000 Layer 2 switches; engineers still running this hardware would reference the SW-LAYER2-PORT-MANAGEMENT-MIB MIB to instrument per-port control and statistics.

IPNetwork Monitor allows you to monitor SNMP objects defined in SW-LAYER2-PORT-MANAGEMENT-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

D-Link / Marconi ES2000-series Layer 2 switches

Monitoring Examples

An operator polls swL2PortStCRCError and swL2PortStCollision for a given port to check physical-layer health, and watches for a swEventBcastRisingStorm trap; a rising swL2PortStCollision count together with the port entering blocking mode (swL2PortCtrlBcastRisingAct) would indicate a broadcast storm or faulty NIC on that segment.

What Can Be Monitored

per-port link status and negotiated speed/duplex
per-port admin, flow-control, and STP configuration state
broadcast-storm rising/falling action configuration
byte/frame Rx/Tx counters per port
CRC error, collision, and late-collision counters
broadcast/multicast frame and frame-size histogram counters

Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC-1215

TRAP-TYPE

From RFC1155-SMI

Counter
enterprises

From RFC1213-MIB

DisplayString

OIDs

OID symbolic	OID numeric	Type	Access	Description
marconi	1.3.6.1.4.1.326
systems	1.3.6.1.4.1.326.2
external	1.3.6.1.4.1.326.2.20
dlink	1.3.6.1.4.1.326.2.20.1
dlinkcommon	1.3.6.1.4.1.326.2.20.1.1
golf	1.3.6.1.4.1.326.2.20.1.2
golfproducts	1.3.6.1.4.1.326.2.20.1.2.1
es2000	1.3.6.1.4.1.326.2.20.1.2.1.3
NTF swEventPortPartition	1.3.6.1.4.1.326.2.20.1.2.1.3.0.1			The trap is sent whenever the port state enter the Partion mode when more than 61 collisions occur while trasmitting.
NTF swEventlinkChangeEvent	1.3.6.1.4.1.326.2.20.1.2.1.3.0.2			The trap is sent whenever the link state of a port changes from link up to link down or from link down to link up
NTF swEventBcastRisingStorm	1.3.6.1.4.1.326.2.20.1.2.1.3.0.3			The trap indicates that broadcast higher rising threshold. This trap including the port ID
NTF swEventBcastFallingStorm	1.3.6.1.4.1.326.2.20.1.2.1.3.0.4			The trap indicates that broadcast higher falling threshold. This trap including the port ID
golfcommon	1.3.6.1.4.1.326.2.20.1.2.2
marconi_products	1.3.6.1.4.1.326.2.20.1.2.2.1
marconi_es2000Prod	1.3.6.1.4.1.326.2.20.1.2.2.1.28
swProperty	1.3.6.1.4.1.326.2.20.1.2.2.1.28.1
marconi_mgmt	1.3.6.1.4.1.326.2.20.1.2.2.2
es2000Mgmt	1.3.6.1.4.1.326.2.20.1.2.2.2.28
swL2Mgmt	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2
swL2PortMgmt	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4
swL2PortInfoTable	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.1		not-accessible	A table that contains information about every port.
swL2PortInfoEntry	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.1.1		not-accessible	A list of information for each port of the device.
INT swL2PortInfoUnitIndex	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.1.1.1	INTEGER	read-only	Indicates ID of the unit in the device.
INT swL2PortInfoModuleIndex	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.1.1.2	INTEGER	read-only	Indicates ID of the module on the unit.
INT swL2PortInfoIndex	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.1.1.3	INTEGER	read-only	Indicates ID of the port on the module.
INT swL2PortInfoType	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.1.1.4	INTEGER	read-only	Indicates the connector type of this port.
STR swL2PortInfoDescr	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.1.1.5	DisplayString	read-only	Provides port type information in displayed string format.
INT swL2PortInfoLinkStatus	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.1.1.6	INTEGER	read-only	Indicates port link status.
INT swL2PortInfoNwayStatus	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.1.1.7	INTEGER	read-only	This object indicates the port speed and duplex mode.
swL2PortCtrlTable	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.2		not-accessible	A table that contains control information about every port.
swL2PortCtrlEntry	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.2.1		not-accessible	A list of control information for each port of the device.
INT swL2PortCtrlUnitIndex	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.2.1.1	INTEGER	read-only	Indicates ID of the unit in the device.
INT swL2PortCtrlModuleIndex	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.2.1.2	INTEGER	read-only	Indicates ID of the module on the unit.
INT swL2PortCtrlIndex	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.2.1.3	INTEGER	read-only	This object indicates the device port number.(1..Max port number).
INT swL2PortCtrlAdminState	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.2.1.4	INTEGER	read-write	This object decides the port to be enabled or disabled.
INT swL2PortCtrlLinkStatusAlarmState	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.2.1.5	INTEGER	read-write	Depends on this object to determine to send a trap or not when link status changes.
INT swL2PortCtrlNwayState	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.2.1.6	INTEGER	read-write	Chooses the port speed, duplex mode, and N-Way function mode.
INT swL2PortCtrlFlowCtrlState	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.2.1.7	INTEGER	read-write	Sets IEEE 802.3x compliant flow control function as enabled or disabled. And IEEE 802.3x compliant flow control function work only when the port is in full duplex mode.The setting is effective the next time you reset or power on the hub.
INT swL2PortCtrlBackPressState	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.2.1.8	INTEGER	read-write	Depends on this object to determine to enable or disable the backpressure function when the port is working in half duplex mode.
INT swL2PortCtrlLockState	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.2.1.9	INTEGER	read-write	The state of this entry. The meanings of the values are: other(1) - this entry is currently in use but the conditions under which it will remain so are different from each of the following values. disable(2) - Port lock funtion disable. enable(3) - Locking a port provides the CPU with the ability to decide which address are permitted to reside on such port, who knows about these address, and unknown packet forwarding to/from such ports. This is a way to prevent undesired traffic from being received or transmmited on the port.
INT swL2PortCtrlPriority	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.2.1.10	INTEGER	read-write	The priority queueing for packets received on this port, except for BPDU/IGMP packets and packets with unknown unicast destination address. IGMP and BPDU packets are always routed with high priority; packets with unknown unicast destination addresses are always routed with low priority. Other packets follow the rules below: other(1) - this entry is currently in use but the conditions under which it will remain so are different from each of the following values. default(2) - A packet is normally classified as low priority, unless at least one of the following is true: (a)The packet contained a TAG (per 802.1Q definition) with the priority greater or equal to 4. (b)The address-table entry for the destination address had Pd=HIGH. force-low_priority(3) - A packet is normally classified as low priority. force-high_priority(4) - A packet is normally classified as high priority.
INT swL2PortCtrlStpState	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.2.1.11	INTEGER	read-write	The state of STP(spanning tree algorithm) operation on this port. That's meaning the port whether add in the STP. The value enabled(3) indicates that STP is enabled on this port, as long as swDevCtrlStpState is also enabled for this device. When disabled(2) but swDevCtrlStpState is still enabled for the device, STP is disabled on this port : any BPDU packets received will be discarded and no BPDU packets will be propagated from the port.
INT swL2PortCtrlHOLState	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.2.1.12	INTEGER	read-write	The object provides a way to prevent HOL (Head Of Line) blocking between ports. HOL protection may prevent forwarding a packet to a blocking port. The idea relies on the assumption that it is better to discard packets destined to blocking ports, then to let them consume more and more buffers in the input-port's Rx-counters because eventually these input ports may become totally blocked. The meanings of the values are: other(1) - this entry is currently in use but the conditions under which it will remain so are different from each of the following values. disabled(2) - HOL function disable. enabled(3) - HOL function enable.
INT swL2PortCtrlBcastRisingAct	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.2.1.13	INTEGER	read-write	This object indicates the system action when broadcast storm rising threshold is met. other(1) - this entry is currently in use but the conditions under which it will remain so are different from each of the following values. do-nothing(2) - no action. blocking(3) - the port can discard any coming broadcast frame. blocking-trap(4) - the port can discard any coming broadcast frame. And the device can send a broadcast rising trap.
INT swL2PortCtrlBcastFallingAct	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.2.1.14	INTEGER	read-write	This object indicates the device action when broadcast storm falling threshold is met. other(1) - this entry is currently in use but the conditions under which it will remain so are different from each of the following values. do-nothing(2) - no action. forwarding(3) - the port has returned to normal operation mode. forwarding-trap(4) - the port has returned to normal operation mode. And the device can send a broadcast falling trap.
INT swL2PortCtrlClearCounter	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.2.1.15	INTEGER	write-only	Sets choosed port to clear counter. First of all, any unsigned integer can be used to set.
swL2PortStTable	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3		not-accessible	A list of port statistic Counter entries.
swL2PortStEntry	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1		not-accessible	This entry include all the port statistic Counter which support by the device, like Bytes received, Bytes Sent ...
INT swL2PortStUnitIndex	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.1	INTEGER	read-only	Indicates ID of the unit in the device.
INT swL2PortStModuleIndex	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.2	INTEGER	read-only	Indicates ID of the module on the unit.
INT swL2PortStIndex	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.3	INTEGER	read-only	This object indicates the device port number.(1..Max port number)
CTR swL2PortStByteRx	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.4	Counter	read-only	swDevCtrlCounterMode = 2(switched-frames) : This counter is incremented once for every data octet of good packets(unicast + multicast + broadcast) received. swDevCtrlCounterMode = 3(all-frames) : This counter is incremented once for every data octet of good packets(unicast + multicast + broadcast packets) and for local and dropped packets.
CTR swL2PortStByteTx	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.5	Counter	read-only	This counter is incremented once for every data octet of a transmitted good packet.
CTR swL2PortStFrameRx	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.6	Counter	read-only	swDevCtrlCounterMode = 2(switched-frames) : This counter is incremented once for every good packet(unicast + multicast + broadcast) received. swDevCtrlCounterMode = 3(all-frames) : This counter is incremented once for every good packet(unicast + multicast + broadcast packets) and for local and dropped packets received.
CTR swL2PortStFrameTx	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.7	Counter	read-only	This counter is incremented once for every transmitted good packet.
CTR swL2PortStTotalBytesRx	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.8	Counter	read-only	This counter is incremented once for every data octet of all received packets. This include data octets of rejected and local packets which are not forwarded to the switching core for transmission. This counter should reflect all the data octets received on the line. Note: A nibble is not counted as a whole byte.
CTR swL2PortStTotalFramesRx	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.9	Counter	read-only	This counter is incremented once for every received packets. This include rejected and local packets which are not forwarded to the switching core for transmission. This counter should reflect all packets received on the line.
CTR swL2PortStBroadcastFramesRx	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.10	Counter	read-only	swDevCtrlCounterMode = 2(switched-frames) : This counter is incremented once for every good broadcast packet received. swDevCtrlCounterMode = 3(all-frames) : This counter is incremented once for every good broadcast packet received and for local and dropped broadcast packets.
CTR swL2PortStMulticastFramesRx	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.11	Counter	read-only	swDevCtrlCounterMode = 2(switched-frames) : This counter is incremented once for every good multicast packet received. swDevCtrlCounterMode = 3(all-frames) : This counter is incremented once for every good multicast packet received and for local and dropped multicast packets. This counter does not include broadcast packets.
CTR swL2PortStCRCError	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.12	Counter	read-only	This counter is incremented once for every received packet which meets all the following conditions: 1. Packet data length is between 64 and 1536 bytes inclusive. 2. Packet has invalid CRC. 3. Collision event, late collision event and receive error event have not been detected.
CTR swL2PortStOversizeFrames	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.13	Counter	read-only	The number of good frames with length more than 1536 bytes.
CTR swL2PortStFragments	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.14	Counter	read-only	This counter is incremented once for every received packet which meets all the following conditions: 1. Packet data length is less than 64 bytes or packet withourt SFD and is less than 64 bytes in length. 2. Packet has invalid CRC. 3. Collision event, late collision event and receive error event have not been detected.
CTR swL2PortStJabber	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.15	Counter	read-only	The number of frames with length more than 1536 bytes and with CRC error or misaligned.
CTR swL2PortStCollision	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.16	Counter	read-only	The number of Collisions.
CTR swL2PortStLateCollision	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.17	Counter	read-only	The number of Late Collision(collision occurring later than 576th transmitted bit).
CTR swL2PortStFrames_64_bytes	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.18	Counter	read-only	This counter is incremented once for every received and transmitted packet with size of 64 bytes. This counter includes rejected received and transmitted packets.
CTR swL2PortStFrames_65_127_bytes	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.19	Counter	read-only	This counter is incremented once for every received and transmitted packet with size of 65 to 127 bytes. This counter includes rejected received and transmitted packets.
CTR swL2PortStFrames_128_255_bytes	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.20	Counter	read-only	This counter is incremented once for every received and transmitted packet with size of 128 to 255 bytes. This counter includes rejected received and transmitted packets.
CTR swL2PortStFrames_256_511_bytes	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.21	Counter	read-only	This counter is incremented once for every received and transmitted packet with size of 256 to 511 bytes. This counter includes rejected received and transmitted packets.
CTR swL2PortStFrames_512_1023_bytes	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.22	Counter	read-only	This counter is incremented once for every received and transmitted packet with size of 512 to 1023 bytes. This counter includes rejected received and transmitted packets.
CTR swL2PortStFrames_1024_1536_bytes	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.23	Counter	read-only	This counter is incremented once for every received and transmitted packet with size of 1024 to 1536 bytes. This counter includes rejected received and transmitted packets.
CTR swL2PortStFramesDroppedFrames	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.24	Counter	read-only	This counter is incremented once for every received dropped packet.
CTR swL2PortStMulticastFramesTx	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.25	Counter	read-only	The number of multicast frames sent. This counter does not include broadcast packets.
CTR swL2PortStBroadcastFramesTx	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.26	Counter	read-only	The number of broadcast frames sent.
CTR swL2PortStUndersizeFrames	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.4.3.1.27	Counter	read-only	This counter is incremented once for every received packet which meets all the following conditions: 1. Packet data length is less than 64 bytes. 2. Packet has valid CRC. 3. Collision event, late collision event and receive error event have not been detected.

RFC description

Manages Layer 2 port information and status for D-Link/Marconi ES2000 switches.

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Download SW-LAYER2-PORT-MANAGEMENT-MIB

What Is SW-LAYER2-PORT-MANAGEMENT-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description