TPLINK-L2BRIDGE-MIB

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Organization: TP-LINK

Last Updated: 2012-12-13

Category: Link Layer and Ethernet Protocols

Description: Manages TP-Link switch Layer 2 bridge configuration, MAC learning, and flooding behavior.

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What Is TPLINK-L2BRIDGE-MIB?

TPLINK-L2BRIDGE-MIB is a TP-Link proprietary MIB (registered under tplinkMgmt) that manages Layer 2 bridge configuration on TP-Link switches, covering MAC address learning, filtering, and flooding behavior. Its object tree splits into tpl2BridgeManageStaticAddrCtrl (a table of manually-configured static MAC/VLAN/port bindings, keyed by tpl2BridgeManageStaticMac and tpl2BridgeManageStaticVlanId, with a TPRowStatus lifecycle field), tpl2BridgeManageDynAddrCtrl for dynamically-learned addresses, tpl2BridgeManageFilterAddrCtrl for addresses to be dropped rather than forwarded, tpl2BridgeManageVlanSecurityCtrl, and tpl2BridgeManageNotificationCtrl. Six NOTIFICATION-TYPE events report FDB (forwarding database) activity: fdbDynMacNew and fdbStaticMacNew fire when a new dynamic or static address is learned, fdbFilterMacNew when a filtered address is learned, fdbMacTableFull and fdbMacMaxLearnedNumExceed when the address table or a port's learning limit is exhausted, and fdbMacLearnModeChange when a port's learning mode changes after a port-security event. Because the static/dynamic/filter tables directly reflect the switch's forwarding behavior, monitoring them alongside the FDB traps reveals MAC-learning exhaustion or unexpected address churn that plain interface counters would not show. It is deployed on TP-Link managed switches, and administrators can download the TPLINK-L2BRIDGE-MIB file to load it into their MIB browser for decoding these bridge and FDB tables.

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Supported Devices

TP-Link managed Layer 2 switches

Monitoring Examples

An operator's trap receiver logs an fdbMacTableFull notification and the operator then polls tpl2BridgeManageDynAddrCtrl for a spike in learned dynamic entries; a full address table paired with fdbMacMaxLearnedNumExceed on a specific port would point to a MAC-flooding condition or a misbehaving downstream device on that port.

What Can Be Monitored

static MAC address bindings (MAC/VLAN/port)
dynamically learned MAC address entries
filtered (blocked) MAC address entries
FDB table-full and max-learned-exceeded notifications
new dynamic/static/filter MAC-learned notifications
port MAC-learning mode change notifications

Imported Objects

From SNMPv2-SMI

MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

From SNMPv2-TC

DisplayString

From TPLINK-MIB

tplinkMgmt

OBJECT-IDENTITY

From TPLINK-TC-MIB

TPRowStatus

OIDs

OID symbolic	OID numeric	Type	Access	Description
tplinkl2BridgeMIB	1.3.6.1.4.1.11863.6.10			This MIB module contain a collection of managed objects for l2 table address.
tplinkl2BridgeMIBObjects	1.3.6.1.4.1.11863.6.10.1
tpl2BridgeManageStaticAddrCtrl	1.3.6.1.4.1.11863.6.10.1.1
tpl2BridgeManageStaticAddrCtrlTable	1.3.6.1.4.1.11863.6.10.1.1.1		not-accessible	A list of static mac address entries.
tpl2BridgeManageStaticAddrCtrlEntry	1.3.6.1.4.1.11863.6.10.1.1.1.1		not-accessible	The static address can be added or removed manually, independent of the aging time. In the stable networks, the static MAC address entries can facilitate the switch to reduce broadcast packets and enhance the efficiency of packets forwarding remarkably.
OCT tpl2BridgeManageStaticMac	1.3.6.1.4.1.11863.6.10.1.1.1.1.1	OCTET STRING	read-only	The static MAC Address
INT tpl2BridgeManageStaticVlanId	1.3.6.1.4.1.11863.6.10.1.1.1.1.2	INTEGER	read-only	The corresponding VLAN ID of the MAC address.
OCT tpl2BridgeManageStaticPort	1.3.6.1.4.1.11863.6.10.1.1.1.1.3	OCTET STRING	read-create	The corresponding Port number of the MAC address.
TPR tpl2BridgeManageStaticStatus	1.3.6.1.4.1.11863.6.10.1.1.1.1.4	TPRowStatus	read-create	The following values are states: these values may be used as follow: active(1),if the entry is being used. createAndGo(4),creat a new entry destroy(6),destory the entry.
tpl2BridgeManageDynAddrCtrl	1.3.6.1.4.1.11863.6.10.1.2
INT tpl2BridgeManageDynAddrCtrlAgingTime	1.3.6.1.4.1.11863.6.10.1.2.1	INTEGER	read-write	Configure aging time for the dynamic address.Set 0 to disable auto aging.
tpl2BridgeManageDynAddrCtrlTable	1.3.6.1.4.1.11863.6.10.1.2.2		not-accessible	A list of dynamic MAC address entries.
tpl2BridgeManageDynAddrCtrlEntry	1.3.6.1.4.1.11863.6.10.1.2.2.1		not-accessible	The dynamic address can be generated by the auto-learning mechanism of the switch. The Dynamic Address Table can update automatically by auto-learning or aging out the MAC address.
OCT tpl2BridgeManageDynMac	1.3.6.1.4.1.11863.6.10.1.2.2.1.1	OCTET STRING	read-only	The dynamic MAC Address.
INT tpl2BridgeManageDynVlanId	1.3.6.1.4.1.11863.6.10.1.2.2.1.2	INTEGER	read-only	Displays the corresponding VLAN ID of the MAC address.
OCT tpl2BridgeManageDynPort	1.3.6.1.4.1.11863.6.10.1.2.2.1.3	OCTET STRING	read-only	The corresponding port number of the MAC address.
INT tpl2BridgeManageDynAgeStatus	1.3.6.1.4.1.11863.6.10.1.2.2.1.4	INTEGER	read-only	The Aging Status of the MAC address.
INT tpl2BridgeManageDynStatus	1.3.6.1.4.1.11863.6.10.1.2.2.1.5	INTEGER	read-write	active(1)......It's should be enable when the MAC address is exist. bind(4)........Bind the dynamic MAC entry. destroy(6).....Delete the dynamic MAC entry.
tpl2BridgeManageFilterAddrCtrl	1.3.6.1.4.1.11863.6.10.1.3
tpl2BridgeManageFilterCtrlTable	1.3.6.1.4.1.11863.6.10.1.3.1		not-accessible	A list of filter MAC address entries.
tpl2BridgeManageFilterCtrlEntry	1.3.6.1.4.1.11863.6.10.1.3.1.1		not-accessible	The filtering address is to forbid the undesired package to be forwarded. The filtering address can be added or removed manually, independent of the aging time.
OCT tpl2BridgeManageFilterMac	1.3.6.1.4.1.11863.6.10.1.3.1.1.1	OCTET STRING	read-only	The filtering MAC Address.
INT tpl2BridgeManageFilterVlanId	1.3.6.1.4.1.11863.6.10.1.3.1.1.2	INTEGER	read-only	The corresponding VLAN ID.
TPR tpl2BridgeManageFilterStatus	1.3.6.1.4.1.11863.6.10.1.3.1.1.3	TPRowStatus	read-create	The following values are states: these values may be used as follow: active(1),if the entry is being used. createAndGo(4),not being used destroy(6),destory the entry.
tpl2BridgeManageVlanSecurityCtrl	1.3.6.1.4.1.11863.6.10.1.4
tpl2BridgeManagevlanSecurityTable	1.3.6.1.4.1.11863.6.10.1.4.1		not-accessible	A list of Fdb vlan security control entries.
tpl2BridgeManagevlanSecEntry	1.3.6.1.4.1.11863.6.10.1.4.1.1		not-accessible	The mac vlan security entry is used to set vlan mac address learning config.
INT tpFdbVlanSecurityVid	1.3.6.1.4.1.11863.6.10.1.4.1.1.1	INTEGER	read-only	The vlan id of this entry.
INT tpFdbVlanSecurityMaxLearned	1.3.6.1.4.1.11863.6.10.1.4.1.1.2	INTEGER	read-create	The max learned limit mac of this vlan security entry.
VLA tpFdbVlanSecurityRowStatus	1.3.6.1.4.1.11863.6.10.1.4.1.1.3	VlanSecEntryStatus	read-create	The status column has four defined values: - 'disable(0)', this entry is exist but invalid; - 'drop(1)', packets with other source mac will be drop when exceed max learned mac; - 'forward(2)', packets with other source mac can be forwarded when exceed max learned mac; - 'createRequest(3)', which is supplied by a management station wishing to create a new instance of a conceptual row and to have its status automatically set to forward(1), making it available for using by the managed device; - 'destory(4)', which is supplied by a management station wishing to delete all of the instances associated with an existing conceptual row.
tpl2BridgeManageNotificationCtrl	1.3.6.1.4.1.11863.6.10.1.5
INT tpl2BridgeManageNotificationGlobalStatus	1.3.6.1.4.1.11863.6.10.1.5.1	INTEGER	read-write	The mac address notification global status.
INT tpl2BridgeManageNotificationTableFullStatus	1.3.6.1.4.1.11863.6.10.1.5.2	INTEGER	read-write	The mac address notification when the table is full.
INT tpl2BridgeManageNotificationInterval	1.3.6.1.4.1.11863.6.10.1.5.3	INTEGER	read-write	The mac address notification interval.
tpl2BridgeManageNotificationTable	1.3.6.1.4.1.11863.6.10.1.5.4		not-accessible	A list of port MAC address Notification setting.
tpl2BridgeManageNotificationCtrlEntry	1.3.6.1.4.1.11863.6.10.1.5.4.1		not-accessible	The dynamic address can be generated by the auto-learning mechanism of the switch. The Dynamic Address Table can update automatically by auto-learning or aging out the MAC address.
STR tpl2BridgeManagePortIndex	1.3.6.1.4.1.11863.6.10.1.5.4.1.1	DisplayString	read-only	This object indicates the port number.
INT tpl2BridgeManageLrnModeChg	1.3.6.1.4.1.11863.6.10.1.5.4.1.2	INTEGER	read-write	Displays the Learn mode change of the MAC address.
INT tpl2BridgeManageExceedMaxLrn	1.3.6.1.4.1.11863.6.10.1.5.4.1.3	INTEGER	read-write	Displays the exceed max learned of the MAC address.
INT tpl2BridgeManageNewMacLrn	1.3.6.1.4.1.11863.6.10.1.5.4.1.4	INTEGER	read-write	Displays the new mac learned of the MAC address.
tplinkl2BridgeNotifications	1.3.6.1.4.1.11863.6.10.2
NTF fdbDynMacNew	1.3.6.1.4.1.11863.6.10.2.1			The switch has learned a new dynamic address.
NTF fdbStaticMacNew	1.3.6.1.4.1.11863.6.10.2.2			The switch has learned a new static address.
NTF fdbFilterMacNew	1.3.6.1.4.1.11863.6.10.2.3			The switch has learned a new filter address.
NTF fdbMacTableFull	1.3.6.1.4.1.11863.6.10.2.4			The switch's Address Table is full!
NTF fdbMacMaxLearnedNumExceed	1.3.6.1.4.1.11863.6.10.2.5			The l2BridgeManageStaticPort has learned the maximum number of address that it can learn.
NTF fdbMacLearnModeChange	1.3.6.1.4.1.11863.6.10.2.6			The l2BridgeManageDynPort has opened its portSecurity, and changes its learning mode.

RFC description

TP-Link Layer 2 bridge MIB managing MAC address tables, VLAN security, and dynamic MAC learning on switches.

Start monitoring TP-Link managed Layer 2 switches (MAC learning/filtering/FDB-capacity status) 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 TPLINK-L2BRIDGE-MIB

What Is TPLINK-L2BRIDGE-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description