USR-PPPLINK-MIB

All MIBs › USR-PPPLINK-MIB

Organization: CommWorks Corporation, a 3Com Company

Last Updated: 2002-08-23

Category: CommWorks/3Com Access Equipment

Description: Covers PPP link control protocol settings and LCP negotiation on CommWorks/3Com equipment.

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 USR-PPPLINK-MIB?

USR-PPPLINK-MIB is a proprietary CommWorks/3Com (US Robotics) MIB for managing PPP (Point-to-Point Protocol) link parameters and LCP (Link Control Protocol) negotiation on their broadband/remote-access equipment. No sample objects were available from the source, but such a module would typically expose per-link PPP/LCP negotiated options (MRU, authentication type, magic number), link status, and negotiation counters or failure indications. Its monitoring focus would be software/protocol status of PPP links — whether LCP negotiation completed successfully and the link is up and stable — rather than physical hardware health, complementing the standard PPP MIB (RFC 1471) it likely parallels or extends. It would be deployed on 3Com/CommWorks dial-up or leased-line remote-access concentrators terminating PPP sessions. Engineers can download the USR-PPPLINK-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in USR-PPPLINK-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

CommWorks/3Com (US Robotics) PPP-terminating access equipment

Monitoring Examples

No sample objects were provided for this MIB, so a concrete object-level monitoring scenario cannot be honestly described; typically an admin would expect to poll per-link LCP negotiation state and status to confirm PPP sessions are established correctly, but the exact object names cannot be confirmed here.

What Can Be Monitored

PPP link status
LCP negotiation state
negotiated link parameters
link negotiation failure indications

Imported Objects

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
OBJECT-TYPE

From USR-DEFINITIONS-MIB

UsrDisplayString
common	OBJECT-IDENTITY

From USR-PPPML-MIB

usrPPPBundleInstance

OBJECT-TYPE

How to Use in IPNetwork Monitor

Example using usrPPPLinkTxTotalFrames OID:

Select a CommWorks/3Com (US Robotics) PPP-terminating access equipment (PPP/LCP link negotiation status) 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 usrPPPLinkTxTotalFrames 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. The total number of frames received from the PPP application for transmission over this link. 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
usrPPP	1.3.6.1.4.1.429.4.11			The commWorks enterprise defined MIB objects for PPP Link.
usrPPPLk	1.3.6.1.4.1.429.4.11.3
usrPPPLinkTable	1.3.6.1.4.1.429.4.11.3.1		not-accessible	Table containing the Link parameters and statistics for a local PPP entity.
usrPPPLinkEntry	1.3.6.1.4.1.429.4.11.3.1.1		not-accessible	Status information for a PPP link.
I32 usrPPPLinkInstance	1.3.6.1.4.1.429.4.11.3.1.1.1	Integer32	read-only	The unique identifier of the instance of PPP link to which this entry corresponds.
INT usrPPPLinkOperStatus	1.3.6.1.4.1.429.4.11.3.1.1.2	INTEGER	read-only	The operational status of the Link control protocol. If the value of this object is up then the finite state machine for the Link control protocol has reached the Opened state.
I32 usrPPPLinkPhysicalIndex	1.3.6.1.4.1.429.4.11.3.1.1.3	Integer32	read-only	The value of ifIndex that identifies the lower-level interface over which this PPP Link is operating. This interface would usually be an HDLC or RS-232 type of interface. If there is no lower-layer interface element, or there is no ifEntry for the element, or the element can not be identified, then the value of this object is 0.
STR usrPPPLinkInterfaceName	1.3.6.1.4.1.429.4.11.3.1.1.4	UsrDisplayString	read-only	The value of the Name that identifies the lower-level interface over which this PPP Link is operating. This interface would usually be an HDLC or RS-232 type of interface. If there is no lower-layer interface element, or there is no ifEntry for the element, or the element can not be identified, then the value of this object is NULL.
I32 usrPPPLinkLocalMRU	1.3.6.1.4.1.429.4.11.3.1.1.5	Integer32	read-only	The current value of the MRU for the local PPP Entity. This value is the MRU that the remote entity is using when sending packets to the local PPP entity. The value of this object is meaningful only when the link has reached the open state (usrPPPLinkOperStatus is up).
I32 usrPPPLinkRemoteMRU	1.3.6.1.4.1.429.4.11.3.1.1.6	Integer32	read-only	The current value of the MRU for the remote PPP Entity. This value is the MRU that the local entity is using when sending packets to the remote PPP entity. The value of this object is meaningful only when the link has reached the open state (usrPPPLinkOperStatus is up).
OCT usrPPPLinkLocalToPeerACCMap	1.3.6.1.4.1.429.4.11.3.1.1.7	OCTET STRING	read-only	The current value of the ACC Map used for sending packets from the local PPP entity to the remote PPP entity. The value of this object is meaningful only when the link has reached the open state (usrPPPLinkOperStatus is up).
OCT usrPPPLinkPeerToLocalACCMap	1.3.6.1.4.1.429.4.11.3.1.1.8	OCTET STRING	read-only	The ACC Map used by the remote PPP entity when transmitting packets to the local PPP entity. The value of this object is meaningful only when the link has reached the open state (usrPPPLinkOperStatus is up).
INT usrPPPLinkLocalToRemoteProtocolCompression	1.3.6.1.4.1.429.4.11.3.1.1.9	INTEGER	read-only	Indicates whether the local PPP entity will use Protocol Compression when transmitting packets to the remote PPP entity. The value of this object is meaningful only when the link has reached the open state (usrPPPLinkOperStatus is up).
INT usrPPPLinkRemoteToLocalProtocolCompression	1.3.6.1.4.1.429.4.11.3.1.1.10	INTEGER	read-only	Indicates whether the remote PPP entity will use Protocol Compression when transmitting packets to the local PPP entity. The value of this object is meaningful only when the link has reached the open state (usrPPPLinkOperStatus is up).
INT usrPPPLinkLocalToRemoteACCompression	1.3.6.1.4.1.429.4.11.3.1.1.11	INTEGER	read-only	Indicates whether the local PPP entity will use Address and Control Compression when transmitting packets to the remote PPP entity. The value of this object is meaningful only when the link has reached the open state (usrPPPLinkOperStatus is up).
INT usrPPPLinkRemoteToLocalACCompression	1.3.6.1.4.1.429.4.11.3.1.1.12	INTEGER	read-only	Indicates whether the remote PPP entity will use Address and Control Compression when transmitting packets to the local PPP entity. The value of this object is meaningful only when the link has reached the open state (usrPPPLinkOperStatus is up).
C32 usrPPPLinkTxTotalFramesEx	1.3.6.1.4.1.429.4.11.3.1.1.13	Counter32	read-only	The total number of frames received from the PPP application for transmission over this link. The value of this object is meaningful only when the link has reached the open state (usrPPPLinkOperStatus is up).
C32 usrPPPLinkTxTotalBytes	1.3.6.1.4.1.429.4.11.3.1.1.14	Counter32	read-only	The total number of bytes received from the PPP application for transmission over this link. The value of this object is meaningful only when the link has reached the open state (usrPPPLinkOperStatus is up).
C32 usrPPPLinkRxPacketTooLongs	1.3.6.1.4.1.429.4.11.3.1.1.15	Counter32	read-only	The number of received packets that have been discarded because their length exceeded the MRU. NOTE, packets which are longer than the MRU but which are successfully received and processed are NOT included in this count.
C32 usrPPPLinkRxTotalFrames	1.3.6.1.4.1.429.4.11.3.1.1.16	Counter32	read-only	The total number of frames received from a lower layer application over this link. The value of this object is meaningful only when the link has reached the open state (usrPPPLinkOperStatus is up).
C32 usrPPPLinkRxTotalBytes	1.3.6.1.4.1.429.4.11.3.1.1.17	Counter32	read-only	The total number of bytes received from a lower layer application over this link. The value of this object is meaningful only when the link has reached the open state (usrPPPLinkOperStatus is up).
usrPPPAuthTable	1.3.6.1.4.1.429.4.11.3.2		not-accessible	Table containing the Authentication status information for a local PPP entity.
usrPPPAuthEntry	1.3.6.1.4.1.429.4.11.3.2.1		not-accessible	Authentication status information for a PPP link.
INT usrPPPAuthOperStatus	1.3.6.1.4.1.429.4.11.3.2.1.1	INTEGER	read-only	The operational status of the Authentication control protocol. If the value of this object is up then the finite state machine for the Authentication control protocol has reached the Opened state.
INT usrPPPAuthLclToRemProtocol	1.3.6.1.4.1.429.4.11.3.2.1.2	INTEGER	read-only	This is the authentication protocol that was used by the local PPP entity when it authenticated the local PPP entity to the remote PPP entity. The value of this object is meaningful only when the authentication has reached the open state (usrPPPAuthOperStatus is up).
INT usrPPPAuthRemToLclProtocol	1.3.6.1.4.1.429.4.11.3.2.1.3	INTEGER	read-only	This is the authentication protocol that was used by the remote PPP entity when it authenticated the remote PPP entity to the local PPP entity. The value of this object is meaningful only when the authentication has reached the open state (usrPPPAuthOperStatus is up).

RFC description

Manages PPP link control protocol parameters and LCP negotiation on CommWorks/3Com equipment.

Start monitoring CommWorks/3Com (US Robotics) PPP-terminating access equipment (PPP/LCP link negotiation 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 USR-PPPLINK-MIB