PDN-PPP-LCP-EXT-MIB

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Organization: Paradyne Networks MIB Working Group Other information about group editing the MIB

Last Updated: 2004-09-10

Category: DSL and Broadband

Description: Extends PPP Link Control Protocol (LCP) with Paradyne-specific option negotiation and link parameter objects.

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What Is PDN-PPP-LCP-EXT-MIB?

PDN-PPP-LCP-EXT-MIB is a Paradyne proprietary MIB module providing enterprise-specific extensions to the standard PPP-LCP-MIB, adding detailed Link Control Protocol (LCP) state and line-quality-monitoring objects for Point-to-Point Protocol links on Paradyne xDSL/WAN subnetwork interfaces. It belongs to Paradyne's enterprise access-equipment MIB family and extends the IETF PPP-LCP standard (RFC 1471). Its data is centered on connection/fault status and performance counters for PPP link negotiation: current link state, the reason a link establishment attempt failed, negotiated magic numbers for loopback detection, and counts of sent/received LCP configure-request, -ack, and -nak packets, plus a notifications group for link-state alerts. This makes it a strong diagnostic tool for PPP link health, revealing negotiation failures or looped links, which is a software-protocol-level status check rather than physical hardware monitoring. It explicitly depends on RFC 1471 (PPP-LCP) as its base standard, and is deployed on Paradyne xDSL/WAN access equipment running PPP-based subnetwork links. Engineers can download the PDN-PPP-LCP-EXT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in PDN-PPP-LCP-EXT-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

Paradyne xDSL/WAN access devices (PPP links)

Monitoring Examples

An administrator would poll pdnPppLinkStatusExtTable/pdnPppLinkStatusExtEntry to check pdnPppLinkStatusCurrState and, if the link is down, pdnPppLinkStatusEstablishFailedReason to determine why LCP negotiation failed. pdnPppLinkStatusLocalToRemoteMagicNumber and pdnPppLinkStatusRemoteToLocalMagicNumber would be compared to detect a looped-back link (identical magic numbers). Rising pdnPppLinkStatusTotalSentConfigNaks or pdnPppLinkStatusTotalReceivedConfigNaks counts relative to Requests/Acks would indicate a persistent LCP option mismatch preventing the link from stabilizing.

What Can Be Monitored

current PPP link state
link establishment failure reason
negotiated magic numbers (loop detection)
sent/received LCP configure-request counts
sent/received LCP configure-ack counts
sent/received LCP configure-nak counts

Imported Objects

From IF-MIB

ifIndex

OBJECT-TYPE

From PDN-HEADER-MIB

pdn-interfaces

From PDN-TC

PdnPPPState
SwitchState

From PPP-LCP-MIB

pppLinkConfigEntry	OBJECT-TYPE
pppLinkStatusEntry	OBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString

How to Use in IPNetwork Monitor

Example using pdnPppLinkStatusTotalSentConfigRequests OID:

Select a Paradyne xDSL/WAN access devices, PPP link (Link Control Protocol/line-quality extensions) 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 pdnPppLinkStatusTotalSentConfigRequests 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 number of Configure-Requests packets sent on 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
pdnPppLcpExtMIB	1.3.6.1.4.1.1795.2.24.2.6.28			The MIB module provides enterprise-specific extensions to the PPP-LCP-MIB for managing the Link Control Protocol (LCP) and Line Quality Monitoring on subnetwork interfaces that use the family of Point-to-Point protocols. The following documents should be referenced with respect to this MIB module: [RFC 1471] Kastenholz, F., `The Definitions of Managed Objects for the Link Control Protocol of the Point-to-Point Protocol, PPP-LCP-MIB', June 1993. [RFC 1661] Simpson, W., `The Point-to-Point Protocol', July 1994.
pdnPppLcpExtNotifications	1.3.6.1.4.1.1795.2.24.2.6.28.0
pdnPppLcpExtObjects	1.3.6.1.4.1.1795.2.24.2.6.28.1
pdnPppLinkStatusExtTable	1.3.6.1.4.1.1795.2.24.2.6.28.1.1		not-accessible	Extensions to the PPP LCP Link Status Table, pppLinkStatusTable. Counters in this group contain `total' counts which are marked from the time the system was last re-initialized.
pdnPppLinkStatusExtEntry	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1		not-accessible	An entry in the PPP LCP Link Status Table.
PDN pdnPppLinkStatusCurrState	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.1	PdnPPPState	read-only	The current state of the LCP State Machine.
STR pdnPppLinkStatusEstablishFailedReason	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.2	DisplayString	read-only	Indicates why the PPP link failed to establish a connection to the Network-Layer Protocol phase. If the link was successfully established, a zero-length string will be returned. Otherwise, a string will be returned indicating why the LCP could not establish the phase.
U32 pdnPppLinkStatusLocalToRemoteMagicNumber	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.3	Unsigned32	read-only	The Magic-Number negotiated for packets in the local to remote direction.
U32 pdnPppLinkStatusRemoteToLocalMagicNumber	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.4	Unsigned32	read-only	The Magic-Number negotiated for packets in the remote to local direction.
C32 pdnPppLinkStatusTotalSentConfigRequestsEx	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.5	Counter32	read-only	The number of Configure-Requests packets sent on this link.
C32 pdnPppLinkStatusTotalReceivedConfigRequests	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.6	Counter32	read-only	The number of Configure-Requests packets received on this link.
C32 pdnPppLinkStatusTotalSentConfigAcks	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.7	Counter32	read-only	The number of Configure-Ack packets sent on this link.
C32 pdnPppLinkStatusTotalReceivedConfigAcks	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.8	Counter32	read-only	The number of Configure-Ack packets received on this link.
C32 pdnPppLinkStatusTotalSentConfigNaks	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.9	Counter32	read-only	The number of Configure-Nak packets sent on this link.
C32 pdnPppLinkStatusTotalReceivedConfigNaks	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.10	Counter32	read-only	The number of Configure-Nak packets received on this link.
C32 pdnPppLinkStatusTotalSentConfigRejects	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.11	Counter32	read-only	The number of Configure-Reject packets sent on this link.
C32 pdnPppLinkStatusTotalReceivedConfigRejects	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.12	Counter32	read-only	The number of Configure-Reject packets received on this link.
C32 pdnPppLinkStatusTotalSentTerminateRequests	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.13	Counter32	read-only	The number of Terminate-Request packets sent on this link.
C32 pdnPppLinkStatusTotalReceivedTerminateRequests	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.14	Counter32	read-only	The number of Terminate-Request packets received on this link.
C32 pdnPppLinkStatusTotalSentTerminateAcks	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.15	Counter32	read-only	The number of Terminate-Ack packets sent on this link.
C32 pdnPppLinkStatusTotalReceivedTerminateAcks	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.16	Counter32	read-only	The number of Terminate-Ack packets received on this link.
C32 pdnPppLinkStatusTotalSentCodeRejects	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.17	Counter32	read-only	The number of Code-Reject packets sent on this link.
C32 pdnPppLinkStatusTotalReceivedCodeRejects	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.18	Counter32	read-only	The number of Code-Reject packets received on this link.
C32 pdnPppLinkStatusTotalSentProtocolRejects	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.19	Counter32	read-only	The number of Protocol-Reject packets sent on this link.
C32 pdnPppLinkStatusTotalReceivedProtocolRejects	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.20	Counter32	read-only	The number of Protocol-Reject packets received on this link.
C32 pdnPppLinkStatusTotalSentEchoRequests	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.21	Counter32	read-only	The number of Echo-Request packets sent on this link.
C32 pdnPppLinkStatusTotalReceivedEchoRequests	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.22	Counter32	read-only	The number of Echo-Request packets received on this link.
C32 pdnPppLinkStatusTotalSentEchoReplies	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.23	Counter32	read-only	The number of Echo-Reply packets sent on this link.
C32 pdnPppLinkStatusTotalReceivedEchoReplies	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.24	Counter32	read-only	The number of Echo-Reply packets received on this link.
C32 pdnPppLinkStatusTotalSentDiscardRequests	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.25	Counter32	read-only	The number of Discard-Request packets sent on this link.
C32 pdnPppLinkStatusTotalReceivedDiscardRequests	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.26	Counter32	read-only	The number of Discard-Request packets received on this link.
C32 pdnPppLinkStatusTotalSentKeepAlives	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.27	Counter32	read-only	The number of automatically generated Echo-Request packets sent on this link as a `Keep Alive' mechanism.
C32 pdnPppLinkStatusTotalReceivedKeepAlives	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.28	Counter32	read-only	The number of Echo-Request packets received on this link as a `Keep Alive' mechanism.
C32 pdnPppLinkStatusTotalEchoRequestsTimeOuts	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.29	Counter32	read-only	The number of Echo-Request packets that have been sent, but no Echo-Reply packet was received.
C32 pdnPppLinkStatusTotalEchoRequestsBadData	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.30	Counter32	read-only	The number of Echo-Request packets that have been received, but the data field in the packet received did not match the data in the packet sent.
C32 pdnPppLinkStatusTotalEchoRequestsPassed	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.31	Counter32	read-only	The number of Echo-Request packets that have been received and the data field in the packet received matched the data in the packet sent.
C32 pdnPppLinkStatusTotalKeepAlivesLost	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.32	Counter32	read-only	The number of Echo-Request packets that have been sent as a `Keep Alive' mechanism which have not been replied and are considered 'lost'.
C32 pdnPppLinkStatusTotalTerminates	1.3.6.1.4.1.1795.2.24.2.6.28.1.1.1.33	Counter32	read-only	The number of times the link was terminated where user traffic could not be sent.
pdnPppLinkConfigExtTable	1.3.6.1.4.1.1795.2.24.2.6.28.1.2		not-accessible	Extensions to the PPP LCP Link Configuration Table, pppLinkconfigTable.
pdnPppLinkConfigExtEntry	1.3.6.1.4.1.1795.2.24.2.6.28.1.2.1		not-accessible	An entry in the PPP LCP Link Configuration Table.
SWI pdnPppLinkConfigPFC	1.3.6.1.4.1.1795.2.24.2.6.28.1.2.1.1	SwitchState	read-write	Configures whether or not Protocol-Field-Compression is desired. When set to enabled(1), the local entity will attempt to negotiate the compression of the Protocol Field. When set to disabled(2), the local entity will not negotiate compression of the Protocol Field. The result of the negotiation is indicated in the pppLinkStatusLocalToRemoteProtocolCompression and the pppLinkStatusRemoteToLocalProtocolCompression objects.
SWI pdnPppLinkConfigACFC	1.3.6.1.4.1.1795.2.24.2.6.28.1.2.1.2	SwitchState	read-write	Configures whether or not Data Link Layer Address and Control fields compression is desired. When set to enabled(1), the local entity will attempt to negotiate the compression of the fields. When set to disabled(2), the local entity will not negotiate compression of the fields. The result of the negotiation is indicated in the pppLinkStatusLocalToRemoteACCompression and the pppLinkStatusRemoteToLocalACCompression objects.
U32 pdnPppLinkConfigKeepAliveQuietTime	1.3.6.1.4.1.1795.2.24.2.6.28.1.2.1.3	Unsigned32	read-write	If no PPP packets are received for this amount of time, the local PPP entity will send an Echo-Request as a `Keep Alive' mechanism to make sure the link is still active. A value of 0 indicates that the `Keep Alive' mechanism is disabled. The largest `quit time` as supported by the syntax is an hour.
U32 pdnPppLinkConfigKeepAliveTimeout	1.3.6.1.4.1.1795.2.24.2.6.28.1.2.1.4	Unsigned32	read-write	The maximum amount of time to wait for an Echo-Reply in response to an Echo-Request sent as a `Keep Alive' mechanism. When this time has exceeded, the link will be terminated and will attempt to reestablish a connection with its remote peer. The maximum amount of time to wait as supported by the syntax is 5 minutes.
pdnPppLinkTestTable	1.3.6.1.4.1.1795.2.24.2.6.28.1.3		not-accessible	A table to support the testing of a PPP link.
pdnPppLinkTestEntry	1.3.6.1.4.1.1795.2.24.2.6.28.1.3.1		not-accessible	An entry in the PPP LCP Link Test Table.
INT pdnPppLinkTestSendEchoTest	1.3.6.1.4.1.1795.2.24.2.6.28.1.3.1.1	INTEGER	read-write	Controls the initiation of a PPP Echo-Request to the remote PPP entity. The agent fills in the data to be echoed. The value read from this object is noOp(1). If an Echo Test is in progress and this object is set to noOp(1),the test will be aborted and the result object below will be set to none(1).
U32 pdnPppLinkTestEchoTestTimeout	1.3.6.1.4.1.1795.2.24.2.6.28.1.3.1.2	Unsigned32	read-write	The maximum amount of time to wait for an Echo-Reply in response to an Echo-Request. If an Echo-Reply is not seen in the amount of time specified, the test will be considered `timed-out'. The maximum amount of time to wait as supported by the syntax is 5 minutes.
INT pdnPppLinkTestSendDiscardTest	1.3.6.1.4.1.1795.2.24.2.6.28.1.3.1.3	INTEGER	read-write	Controls the initiation of a PPP Discard-Request to the remote PPP entity. The value read from this object is noOp(1).
INT pdnPppLinkTestLastEchoTestResults	1.3.6.1.4.1.1795.2.24.2.6.28.1.3.1.4	INTEGER	read-only	Displays the results of the last Echo Test. A value of none(1) will be returned if no Echo Tests have been performed. If an Echo Test is currently being performed and neither a Echo Reply was received nor the Echo Timeout Period has been satisfied, inProgress(2) will be read. If the last Echo Test received a Echo Reply and the echo data received matched that which was sent, a success(3) will be returned. If an Echo Test was initiated and no Echo Reply was received within the Echo Timeout Period, a timedOut(4) will be read. If the Echo Reply was returned, but the data received did not match the data that was sent, a compareFailed(5) will be read.
pdnPppLcpExtAFNs	1.3.6.1.4.1.1795.2.24.2.6.28.2
pdnPppLcpExtConformance	1.3.6.1.4.1.1795.2.24.2.6.28.3
pdnPppLcpExtCompliances	1.3.6.1.4.1.1795.2.24.2.6.28.3.1
pdnPppLcpExtCompliance	1.3.6.1.4.1.1795.2.24.2.6.28.3.1.1			The compliance statement for network elements implementing PPP Link Control Protocol.
pdnPppLcpExtGroups	1.3.6.1.4.1.1795.2.24.2.6.28.3.2
pdnPppLcpExtObjGroups	1.3.6.1.4.1.1795.2.24.2.6.28.3.2.1
pdnPppLcpExtStateMachineGroup	1.3.6.1.4.1.1795.2.24.2.6.28.3.2.1.1			Displays LCP State Machine's state.
pdnPppLcpExtEstablishFailedGroup	1.3.6.1.4.1.1795.2.24.2.6.28.3.2.1.2			Displays the reason the last link establishment failed.
pdnPppLcpExtMagicNumberGroup	1.3.6.1.4.1.1795.2.24.2.6.28.3.2.1.3			Displays the Magic Number negotiated.
pdnPppLcpExtPacketCountersGroup	1.3.6.1.4.1.1795.2.24.2.6.28.3.2.1.4			Counters for various PPP LCP packets.
pdnPppLcpExtKeepAliveCountersGroup	1.3.6.1.4.1.1795.2.24.2.6.28.3.2.1.5			Counters relative to `Keep Alive'.
pdnPppLcpExtPFCGroup	1.3.6.1.4.1.1795.2.24.2.6.28.3.2.1.6			Configuration for Protocol-Field Compression.
pdnPppLcpExtACFCGroup	1.3.6.1.4.1.1795.2.24.2.6.28.3.2.1.7			Configuration for Data Link Layer Address and Control field compression.
pdnPppLcpExtKeepAliveConfGroup	1.3.6.1.4.1.1795.2.24.2.6.28.3.2.1.8			Configuration of parameters relative to `Keep Alive'.
pdnPppLcpExtEchoTestGroup	1.3.6.1.4.1.1795.2.24.2.6.28.3.2.1.9			Support configuration, initiation, and results of an Echo Test.
pdnPpppLcpExtDiscardTestGroup	1.3.6.1.4.1.1795.2.24.2.6.28.3.2.1.10			Supports the initiation of a Discard Test.
pdnPpppLcpExtLinkStateCounterGroup	1.3.6.1.4.1.1795.2.24.2.6.28.3.2.1.11			Counters relative to the link state.
pdnPppLcpExtAfnGroups	1.3.6.1.4.1.1795.2.24.2.6.28.3.2.2
pdnPppLcpExtNtfyGroups	1.3.6.1.4.1.1795.2.24.2.6.28.3.2.3

RFC description

Enterprise extensions to PPP Link Control Protocol for managing Point-to-Point connection quality on Paradyne interfaces.

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Download PDN-PPP-LCP-EXT-MIB