RAISECOM-LBDETECT-MIB

All MIBs › RAISECOM-LBDETECT-MIB

Organization: Raisecom, Inc.

Last Updated: 2010--0-9-

Description: Raisecom loopback detection MIB for identifying Layer 2 loops per port and VLAN, reporting offending MAC addresses via traps on Raisecom switches

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock 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.

What Is RAISECOM-LBDETECT-MIB?

RAISECOM-LBDETECT-MIB is a private MIB from Raisecom for Layer 2 loopback (loop) detection, identifying network loops on a per-port and per-VLAN basis and reporting offending MAC addresses via traps. It exposes configuration for loop detection mode, interval, restore time, and destination address, plus per-port enable/status objects and trap definitions. This is a fault-detection MIB used to monitor the software/network health of the switch's Layer 2 forwarding, specifically catching conditions (physical loops) that can cause broadcast storms and degrade device and network performance. It is a vendor-specific loop-detection feature with no dependency on a standards-track MIB. It is typically deployed on Raisecom access switches in networks where accidental or malicious Ethernet loops are a risk. Engineers can download the RAISECOM-LBDETECT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in RAISECOM-LBDETECT-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

Raisecom access switches

Monitoring Examples

An administrator would check rcLbDetectPortTable entries for rcPortLbDetectEnable status per port, and monitor for rcLbDetectTrap notifications that fire when a loop is detected on a port/VLAN combination identified via rcLbDetectVlan. The rcLbDetectRestoreTime setting determines how long a port stays disabled after a loop is found before rcLbDetectMode allows it to automatically recover, and repeated traps from the same port would reveal a persistent cabling or configuration loop.

What Can Be Monitored

loop detection enable per port
loop detection interval and restore time
detected loop VLAN and offending MAC
loop detection mode (block/alert)
loop detection trap events

Imported Objects

From IF-MIB

ifIndex

OBJECT-TYPE

From RAISECOM-BASE-MIB

iscomSwitch

OBJECT-IDENTITY

From SNMPv2-TC

MacAddress

From SWITCH-TC

PortList
Vlanset

How to Use in IPNetwork Monitor

Example using rcPortLbDetectBlockCount OID:

Select a Raisecom access 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 rcPortLbDetectBlockCount 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. It reports the how many times this port was blocked. 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 an INTEGER-type OID, Value bounds is the most useful condition here — trigger an alert if the count changes from its expected baseline, since that would indicate the underlying set of items changed unexpectedly. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
rcLbDetect	1.3.6.1.4.1.8886.6.1.50			description of rcLbDetect object.
rcLbDetectPktConfig	1.3.6.1.4.1.8886.6.1.50.1
MAC rcLbDetectDestAddr	1.3.6.1.4.1.8886.6.1.50.1.1	MacAddress	read-write	Destinate mac address of loopbackdetect packet
INT rcLbDetectVlan	1.3.6.1.4.1.8886.6.1.50.1.2	INTEGER	read-write	vlan id of loopbackdetect packet
INT rcLbDetectInterval	1.3.6.1.4.1.8886.6.1.50.1.3	INTEGER	read-write	Period of loopback detection
INT rcLbDetectRestoreTime	1.3.6.1.4.1.8886.6.1.50.1.4	INTEGER	read-write	Restore time under port mode.
INT rcLbDetectMode	1.3.6.1.4.1.8886.6.1.50.1.5	INTEGER	read-write	Mode choice of loopback detection.
INT rcLbDetectUpstreamDeleteVlanEnable	1.3.6.1.4.1.8886.6.1.50.1.6	INTEGER	read-write	The Action of Upstream ports when loop happens.
POR rcLbDetectUpstreamList	1.3.6.1.4.1.8886.6.1.50.1.7	PortList	read-write	Upstream portlist.
OCT rcLbDetectUpstreamList64	1.3.6.1.4.1.8886.6.1.50.1.8	OCTET STRING	read-write	Upstream portlist for device which has more than 256 ports.
INT rcLbDetectPortModVlan	1.3.6.1.4.1.8886.6.1.50.1.9	INTEGER	read-write	Vlan for sending pkt in Port-based.0 means untag pkt will be sent.
rcLbDetectPortTable	1.3.6.1.4.1.8886.6.1.50.2		not-accessible	Port infomation of loopbackdetection
rcLbDetectPortEntry	1.3.6.1.4.1.8886.6.1.50.2.1		not-accessible	An entry in rcLbDetectPortTable
INT rcPortLbDetectEnable	1.3.6.1.4.1.8886.6.1.50.2.1.1	INTEGER	read-write	Enable or disable loopbackdetection for special port
INT rcPortLbDetectLoopAction	1.3.6.1.4.1.8886.6.1.50.2.1.2	INTEGER	read-write	Action when received a packet form other bridge
INT rcPortLbDetectManualRestore	1.3.6.1.4.1.8886.6.1.50.2.1.3	INTEGER	read-write	Set the port non-block manualy
INT rcPortLbDetectStatus	1.3.6.1.4.1.8886.6.1.50.2.1.4	INTEGER	read-only	The status of this port
INT rcPortLbDetectBlockCountEx	1.3.6.1.4.1.8886.6.1.50.2.1.5	INTEGER	read-only	How many times this port was blocked
INT rcPortLbDetectLastOccur	1.3.6.1.4.1.8886.6.1.50.2.1.6	INTEGER	read-only	The moment of last loop happen
INT rcPortLbDetectLastDuration	1.3.6.1.4.1.8886.6.1.50.2.1.7	INTEGER	read-only	The duration of last loop
MAC rcPortLbDetectLastSrcMac	1.3.6.1.4.1.8886.6.1.50.2.1.8	MacAddress	read-only	The source mac address of last loop
INT rcPortLbDetectLastSrcPort	1.3.6.1.4.1.8886.6.1.50.2.1.9	INTEGER	read-only	The source port of last loop
INT rcPortLbDetectLastVlan	1.3.6.1.4.1.8886.6.1.50.2.1.10	INTEGER	read-only	The vlan of last loop
INT rcPortLbDetectSendPkts	1.3.6.1.4.1.8886.6.1.50.2.1.11	INTEGER	read-only	How many loopbackdetect packets this port send
INT rcPortLbDetectRecvPkts	1.3.6.1.4.1.8886.6.1.50.2.1.12	INTEGER	read-only	How many loopbackdetect packets this port received
INT rcPortLbDetectStatsClear	1.3.6.1.4.1.8886.6.1.50.2.1.13	INTEGER	read-write	Clear statistic of loopbackdetection packets
rcLbDetectErrorDeviceTable	1.3.6.1.4.1.8886.6.1.50.3		not-accessible	Error infomation of loopbackdetection
rcLbDetectErrorDeviceEntry	1.3.6.1.4.1.8886.6.1.50.3.1		not-accessible	An entry in rcLbDetectErrorDeviceTable
INT rcLbDetectErrorDeviceIndex	1.3.6.1.4.1.8886.6.1.50.3.1.1	INTEGER	not-accessible	Error number
MAC rcLbDetectErrorDeviceMac	1.3.6.1.4.1.8886.6.1.50.3.1.2	MacAddress	read-only	Mac address of received packet
INT rcLbDetectErrorDevicePeerPort	1.3.6.1.4.1.8886.6.1.50.3.1.3	INTEGER	read-only	Peer port of received packet
INT rcLbDetectErrorDeviceCounts	1.3.6.1.4.1.8886.6.1.50.3.1.4	INTEGER	read-only	How many times this port have receive a loopbackdetect packet from same mac and same port
INT rcLbDetectErrorDeviceLastOccur	1.3.6.1.4.1.8886.6.1.50.3.1.5	INTEGER	read-only	The time of last error happen since device boot.
rcPortLbDetectVlanTable	1.3.6.1.4.1.8886.6.1.50.4		not-accessible	blockvlan infomation of loopbackdetection
rcPortLbDetectVlanEntry	1.3.6.1.4.1.8886.6.1.50.4.1		not-accessible	An entry in rcPortLbDetectVlanTable
INT rcPortLbDetectVlan	1.3.6.1.4.1.8886.6.1.50.4.1.1	INTEGER	read-only	Block vlan
MAC rcPortLbDetectVlanSrcMac	1.3.6.1.4.1.8886.6.1.50.4.1.2	MacAddress	read-only	If some vlan has loopback, this parameter records the source mac address of loopback.
INT rcPortLbDetectVlanSrcPort	1.3.6.1.4.1.8886.6.1.50.4.1.3	INTEGER	read-only	If some vlan has loopback,this parameter records the source port of loopback.
INT rcPortLbDetectVlanDuration	1.3.6.1.4.1.8886.6.1.50.4.1.4	INTEGER	read-only	If some vlan are is blocked because of loopback, the parameter records duration of block vlan
rcLbDetectVlanTable	1.3.6.1.4.1.8886.6.1.50.5		not-accessible	vlan infomation of loopbackdetection
rcLbDetectVlanEntry	1.3.6.1.4.1.8886.6.1.50.5.1		not-accessible	An entry in rcLbDetectVlanTable
INT rcLbDetectVlanIndex	1.3.6.1.4.1.8886.6.1.50.5.1.1	INTEGER	read-only	Vlan
INT rcLbDetectVlanStatus	1.3.6.1.4.1.8886.6.1.50.5.1.2	INTEGER	read-only	If some vlan has loopback,this parameter records the status of the vlan .
OCT rcLbDetectVlanDiscardingPortList	1.3.6.1.4.1.8886.6.1.50.5.1.3	OCTET STRING	read-only	If some vlan has loopback,this parameter records the discarded port in the vlan.
OCT rcLbDetectVlanSrcPortList	1.3.6.1.4.1.8886.6.1.50.5.1.4	OCTET STRING	read-only	If some vlan are is blocked because of loopback, the parameter records the source ports that block this vlan
OCT rcLbDetectVlanUpPortList	1.3.6.1.4.1.8886.6.1.50.5.1.5	OCTET STRING	read-only	This parameter records upstream port of current vlan
rcLbDetectTrap	1.3.6.1.4.1.8886.6.1.50.6
rcLbDetectLoopTrap	1.3.6.1.4.1.8886.6.1.50.6.1			Port's state change
rcLbDetectErrorDeviceTrap	1.3.6.1.4.1.8886.6.1.50.6.2			Receive a loopback detection packet

RFC description

Detects network loops via loopback detection packets on Raisecom switches with per-port and VLAN-based configuration.

Start monitoring Raisecom access 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 RAISECOM-LBDETECT-MIB