PPP-MIB

All MIBs › PPP-MIB

Category: WAN

Description: Implements the IETF Point-to-Point Protocol MIB (RFC 1471), managing LCP negotiation state, NCP parameters, and link quality counters.

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What Is PPP-MIB?

PPP-MIB is the IETF standards-based MIB defined in RFC 1471 for managing Point-to-Point Protocol links, a vendor-neutral module implementable by any router or access device that runs PPP. It exposes data about link control protocol (LCP) negotiation state, network control protocol (NCP) states for IP, IPX, bridging, and compression, and per-link protocol status. Administrators use it to monitor the operational health of dial-up, leased-line, or tunnel PPP connections — tracking whether LCP has reached the Open state, whether IPCP/IPXCP/BCP/CCP/ECP negotiations succeeded, and whether a link is up, down, or renegotiating, which is essential for diagnosing WAN connectivity faults. It typically depends on and complements the IF-MIB, since each PPP link is represented as an ifIndex-indexed interface entry. PPP-MIB is commonly deployed on routers, remote access servers, and modems terminating point-to-point serial or dial links in enterprise and service-provider WAN environments. Engineers can download the PPP-MIB file directly to load it into their MIB browser.

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

Routers and WAN access devices running PPP
vendor-neutral, standards-based MIB, not tied to a specific manufacturer

Monitoring Examples

An administrator can poll pppLinkProtoStateTable, indexed by pppLinkProtoStateIfIndex, to read pppLinkProtoStateLcpState and confirm the link control layer is Open before checking pppLinkProtoStateIpcpState to verify IP connectivity was negotiated. If pppLinkProtoStateBcpState or pppLinkProtoStateCcpState show a stuck 'Starting' or 'Failed' state, it signals bridging or compression negotiation failure on that PPP link. Correlating pppLinkLcpTable entries with the ifIndex from pppLinkProtoStateTable lets an operator pinpoint exactly which physical or virtual interface's PPP negotiation stalled.

What Can Be Monitored

LCP negotiation state
IPCP/IPXCP negotiation state
bridging control protocol (BCP) state
compression control protocol (CCP) state
encryption control protocol (ECP) state
per-interface PPP link type

Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

Counter

From SCANET-MIB

scanet

OBJECT-IDENTITY

OIDs

OID symbolic	OID numeric	Type	Access	Description
ppp	1.3.6.1.4.1.208.43
pppLink	1.3.6.1.4.1.208.43.1
pppLinkProtoStateTable	1.3.6.1.4.1.208.43.1.1		not-accessible	Table containing protocol states and link type (standard, multilink slave or multilink master).
pppLinkProtoStateEntry	1.3.6.1.4.1.208.43.1.1.1		not-accessible
INT pppLinkProtoStateIfIndex	1.3.6.1.4.1.208.43.1.1.1.1	INTEGER	read-only	Interface index.
INT pppLinkProtoStatePppLinkType	1.3.6.1.4.1.208.43.1.1.1.2	INTEGER	read-only	PPP Link type.
PPP pppLinkProtoStateLcpState	1.3.6.1.4.1.208.43.1.1.1.3	PppProtocolState	read-only	LCP (Link Control Protocol) state.
PPP pppLinkProtoStateIpcpState	1.3.6.1.4.1.208.43.1.1.1.4	PppProtocolState	read-only	IPCP (Ip Control Protocol) state. Not used for multilink slave links (pppLinkProtoStatePppLinkType = multilinkslave).
PPP pppLinkProtoStateIpxcpState	1.3.6.1.4.1.208.43.1.1.1.5	PppProtocolState	read-only	IPXCP (Ipx Control Protocol) state. Not used for multilink slave links (pppLinkProtoStatePppLinkType = multilinkslave).
PPP pppLinkProtoStateBcpState	1.3.6.1.4.1.208.43.1.1.1.6	PppProtocolState	read-only	BCP (Bridging Control Protocol) state. Not used for multilink slave links (pppLinkProtoStatePppLinkType = multilinkslave).
PPP pppLinkProtoStateCcpState	1.3.6.1.4.1.208.43.1.1.1.7	PppProtocolState	read-only	CCP (Compression Control Protocol) state. Not used for multilink slave links (pppLinkProtoStatePppLinkType = multilinkslave).
PPP pppLinkProtoStateEcpState	1.3.6.1.4.1.208.43.1.1.1.8	PppProtocolState	read-only	ECP (Encryption Control Protocol) state. Not used for multilink slave links (pppLinkProtoStatePppLinkType = multilinkslave).
pppLinkLcpTable	1.3.6.1.4.1.208.43.1.2		not-accessible	LCP (Link Control Protocol) information table. Values are first valid when protocol has state OPENED. Not used for multilink master links (pppLinkProtoStatePppLinkType = multilinkmaster).
pppLinkLcpEntry	1.3.6.1.4.1.208.43.1.2.1		not-accessible
INT pppLinkLcpIfIndex	1.3.6.1.4.1.208.43.1.2.1.1	INTEGER	read-only	Interface index
INT pppLinkLcpMRUInc	1.3.6.1.4.1.208.43.1.2.1.2	INTEGER	read-only	Local Maximum Receive Unit
INT pppLinkLcpMRUOut	1.3.6.1.4.1.208.43.1.2.1.3	INTEGER	read-only	Remote Maximum Receive Unit
INT pppLinkLcpACCMapInc	1.3.6.1.4.1.208.43.1.2.1.4	INTEGER	read-only	Local to peer ACCM map
INT pppLinkLcpACCMapOut	1.3.6.1.4.1.208.43.1.2.1.5	INTEGER	read-only	Peer to local ACCM map
INT pppLinkProtocolCompressionInc	1.3.6.1.4.1.208.43.1.2.1.6	INTEGER	read-only	Local to remote protocol field compression
INT pppLinkProtocolCompressionOut	1.3.6.1.4.1.208.43.1.2.1.7	INTEGER	read-only	Remote to local protocol field compression
INT pppLinkACCompressionInc	1.3.6.1.4.1.208.43.1.2.1.8	INTEGER	read-only	Local to remote address and control field compression
INT pppLinkACCompressionOut	1.3.6.1.4.1.208.43.1.2.1.9	INTEGER	read-only	Remote to local address and control field compression
INT pppLinkMagicNumberInc	1.3.6.1.4.1.208.43.1.2.1.10	INTEGER	read-only	Local magic number
INT pppLinkMagicNumberOut	1.3.6.1.4.1.208.43.1.2.1.11	INTEGER	read-only	Remote magic number
pppLinkBcpTable	1.3.6.1.4.1.208.43.1.3		not-accessible	BCP (Bridging Control Protocol) information table. Values are first valid when protocol has state OPENED. Not used for multilink slave links (pppLinkProtoStatePppLinkType = multilinkslave).
pppLinkBcpEntry	1.3.6.1.4.1.208.43.1.3.1		not-accessible
INT pppLinkBcpIfIndex	1.3.6.1.4.1.208.43.1.3.1.1	INTEGER	read-only	Interface index
INT pppLinkBcpMACTypeInc	1.3.6.1.4.1.208.43.1.3.1.2	INTEGER	read-only	Frame type (incoming)
INT pppLinkBcpMACTypeOut	1.3.6.1.4.1.208.43.1.3.1.3	INTEGER	read-only	Frame type (outgoing)
INT pppLinkBcpBridgingProtInc	1.3.6.1.4.1.208.43.1.3.1.4	INTEGER	read-only	Bridging protocol used (incoming).
INT pppLinkBcpBridgingProtOut	1.3.6.1.4.1.208.43.1.3.1.5	INTEGER	read-only	Bridging protocol used (outgoing).
pppLinkCcpTable	1.3.6.1.4.1.208.43.1.4		not-accessible	CCP (Compression Control Protocol) information table. Not used for multilink slave links (pppLinkProtoStatePppLinkType = multilinkslave).
pppLinkCcpEntry	1.3.6.1.4.1.208.43.1.4.1		not-accessible
INT pppLinkCcpIfIndex	1.3.6.1.4.1.208.43.1.4.1.1	INTEGER	read-only	Interface index.
INT pppLinkCcpHistorySizeIncoming	1.3.6.1.4.1.208.43.1.4.1.2	INTEGER	read-only	Number of compression histories (incoming).
INT pppLinkCcpHistorySizeOutgoing	1.3.6.1.4.1.208.43.1.4.1.3	INTEGER	read-only	Number of compression histories (outgoing).
INT pppLinkCcpCheckTypeIncoming	1.3.6.1.4.1.208.43.1.4.1.4	INTEGER	read-only	How compression history synchronization is handled (incoming).
INT pppLinkCcpCheckTypeOutgoing	1.3.6.1.4.1.208.43.1.4.1.5	INTEGER	read-only	How compression history synchronization is handled.
pppLinkEcpTable	1.3.6.1.4.1.208.43.1.5		not-accessible	ECP (Encryption Control Protocol) information table. Not used for multilink slave links (pppLinkProtoStatePppLinkType = multilinkslave).
pppLinkEcpEntry	1.3.6.1.4.1.208.43.1.5.1		not-accessible
INT pppLinkEcpIfIndex	1.3.6.1.4.1.208.43.1.5.1.1	INTEGER	read-only	Interface index
CTR pppLinkEcpResetRequestsRx	1.3.6.1.4.1.208.43.1.5.1.2	Counter	read-only	Number of encryption history reset requests received.
CTR pppLinkEcpResetRequestsTx	1.3.6.1.4.1.208.43.1.5.1.3	Counter	read-only	Number of encryption history reset requests sent.
CTR pppLinkEcpResetAcksRx	1.3.6.1.4.1.208.43.1.5.1.4	Counter	read-only	Number of encryption history reset acknowledgments received.
CTR pppLinkEcpResetAcksTx	1.3.6.1.4.1.208.43.1.5.1.5	Counter	read-only	Number of encryption history reset acknowledgments sent.
CTR pppLinkEcpRxDiscarded	1.3.6.1.4.1.208.43.1.5.1.6	Counter	read-only	Number of packets discarded due to lack of synchronization, buffer lacks or packet errors.
CTR pppLinkEcpTxDiscarded	1.3.6.1.4.1.208.43.1.5.1.7	Counter	read-only	Number of packets discarded due to buffer lacks or transmit queue overflows
INT pppLinkEcpReceiverState	1.3.6.1.4.1.208.43.1.5.1.8	INTEGER	read-only	State of receiver. Error state means waiting for reset acknowledgment
pppLinkCompTable	1.3.6.1.4.1.208.43.1.6		not-accessible	Compression information table. Not used for multilink slave links (pppLinkProtoStatePppLinkType = multilinkslave).
pppLinkCompEntry	1.3.6.1.4.1.208.43.1.6.1		not-accessible
INT pppLinkCompIfIndex	1.3.6.1.4.1.208.43.1.6.1.1	INTEGER	read-only	Interface index.
CTR pppLinkCompDecoderBytesIn	1.3.6.1.4.1.208.43.1.6.1.2	Counter	read-only	Total number of bytes received by the decoder.
CTR pppLinkCompDecoderDecompBytesOut	1.3.6.1.4.1.208.43.1.6.1.3	Counter	read-only	Decompressed bytes from the decoder.
CTR pppLinkCompDecoderUncompBytesOut	1.3.6.1.4.1.208.43.1.6.1.4	Counter	read-only	Uncompressed bytes received by the decoder.
CTR pppLinkCompDecoderCompPacketsIn	1.3.6.1.4.1.208.43.1.6.1.5	Counter	read-only	Compressed packets received by the decoder.
CTR pppLinkCompDecoderUncompPacketsIn	1.3.6.1.4.1.208.43.1.6.1.6	Counter	read-only	Uncompressed packets received by the decoder.
CTR pppLinkCompDecoderDecompQueueLength	1.3.6.1.4.1.208.43.1.6.1.7	Counter	read-only	Number of packets waiting to be decompressed.
CTR pppLinkCompDecoderCompressionRatio	1.3.6.1.4.1.208.43.1.6.1.8	Counter	read-only	Receive compression ratio (multiplied by 100).
CTR pppLinkCompDecoderResetRequestTx	1.3.6.1.4.1.208.43.1.6.1.9	Counter	read-only	The number of times the decoder requested re-initialization og the compression history.
CTR pppLinkCompDecoderResetAcksRx	1.3.6.1.4.1.208.43.1.6.1.10	Counter	read-only	The number of acknowledgments to reset requests received by the router.
CTR pppLinkCompDecoderRxDiscarded	1.3.6.1.4.1.208.43.1.6.1.11	Counter	read-only	Number of packets discarded by the decoder due to buffer lacks or synchronization problems.
INT pppLinkCompDecoderState	1.3.6.1.4.1.208.43.1.6.1.12	INTEGER	read-only	State of decoder. Error state means waiting for reset acknowledgment
CTR pppLinkCompEncoderBytesIn	1.3.6.1.4.1.208.43.1.6.1.13	Counter	read-only	Total number of bytes received by the encoder.
CTR pppLinkCompEncoderCompBytesOut	1.3.6.1.4.1.208.43.1.6.1.14	Counter	read-only	Number of compressed bytes leaving the encoder.
CTR pppLinkCompEncoderUncompBytesOut	1.3.6.1.4.1.208.43.1.6.1.15	Counter	read-only	Number of uncompressed bytes leaving the encoder.
CTR pppLinkCompEncoderCompPacketsOut	1.3.6.1.4.1.208.43.1.6.1.16	Counter	read-only	Number of compressed packets leaving the encoder.
CTR pppLinkCompEncoderUncompPacketsOut	1.3.6.1.4.1.208.43.1.6.1.17	Counter	read-only	Number of uncompressed packets leaving the encoder.
CTR pppLinkCompEncoderCompQueueLength	1.3.6.1.4.1.208.43.1.6.1.18	Counter	read-only	Number of packets waiting to be compressed.
CTR pppLinkCompEncoderCompressionRation	1.3.6.1.4.1.208.43.1.6.1.19	Counter	read-only	Transmit compression ratio (multiplied by 100).
CTR pppLinkCompEncoderResetRequestRx	1.3.6.1.4.1.208.43.1.6.1.20	Counter	read-only	The number of times the remote end requested re-initialization og the compression history.
CTR pppLinkCompEncoderResetAckTx	1.3.6.1.4.1.208.43.1.6.1.21	Counter	read-only	The number of acknowledgments to reset requests transmitted by the router.
CTR pppLinkCompEncoderTxDiscarded	1.3.6.1.4.1.208.43.1.6.1.22	Counter	read-only	Number of packets discarded by the encoder due to buffer lacks or transmit queue overflows.
pppLinkChapTable	1.3.6.1.4.1.208.43.1.7		not-accessible	Table containing CHAP information. Not used for multilink master links (pppLinkProtoStatePppLinkType = multilinkmaster).
pppLinkChapEntry	1.3.6.1.4.1.208.43.1.7.1		not-accessible
INT pppLinkChapIfIndex	1.3.6.1.4.1.208.43.1.7.1.1	INTEGER	read-only	Interface index.
INT pppLinkChapIncoming	1.3.6.1.4.1.208.43.1.7.1.2	INTEGER	read-only	Is this router authenticated by the remote end using CHAP.
INT pppLinkChapOutgoing	1.3.6.1.4.1.208.43.1.7.1.3	INTEGER	read-only	Is the remote router authenticated using CHAP.
CTR pppLinkChapChallengeRx	1.3.6.1.4.1.208.43.1.7.1.4	Counter	read-only	Authentication challenges received from remote end
CTR pppLinkChapChallengeTx	1.3.6.1.4.1.208.43.1.7.1.5	Counter	read-only	Authentication challenges transmitted to remote end
CTR pppLinkChapResponseRx	1.3.6.1.4.1.208.43.1.7.1.6	Counter	read-only	Authentication responses received from remote end.
CTR pppLinkChapResponseTx	1.3.6.1.4.1.208.43.1.7.1.7	Counter	read-only	Authentication responses transmitted to remote end.
CTR pppLinkChapSuccesRx	1.3.6.1.4.1.208.43.1.7.1.8	Counter	read-only	Number of authentication succes replies received from remote end.
CTR pppLinkChapSuccesTx	1.3.6.1.4.1.208.43.1.7.1.9	Counter	read-only	Number of authentication succes replies transmitted to remote end.
CTR pppLinkChapFailureRx	1.3.6.1.4.1.208.43.1.7.1.10	Counter	read-only	Number of authentication failure replies received from remote end.
CTR pppLinkChapFailureTx	1.3.6.1.4.1.208.43.1.7.1.11	Counter	read-only	Number of authentication failure replies transmitted to remote end.
pppLinkPapTable	1.3.6.1.4.1.208.43.1.8		not-accessible	Table containing CHAP information. Not used for multilink master links (pppLinkProtoStatePppLinkType = multilinkmaster).
pppLinkPapEntry	1.3.6.1.4.1.208.43.1.8.1		not-accessible
INT pppLinkPapIfIndex	1.3.6.1.4.1.208.43.1.8.1.1	INTEGER	read-only	Interface index.
INT pppLinkPapIncoming	1.3.6.1.4.1.208.43.1.8.1.2	INTEGER	read-only	Is this router authenticated by the remote end using PAP.
INT pppLinkPapOutgoing	1.3.6.1.4.1.208.43.1.8.1.3	INTEGER	read-only	Is the remote router authenticated using PAP.
CTR pppLinkPapAuthReqRx	1.3.6.1.4.1.208.43.1.8.1.4	Counter	read-only	Number of authentication requests received from remote end.
CTR pppLinkPapAuthReqTx	1.3.6.1.4.1.208.43.1.8.1.5	Counter	read-only	Number of authentication requests transmitted to remote end.
CTR pppLinkPapAuthAckRx	1.3.6.1.4.1.208.43.1.8.1.6	Counter	read-only	Number of authentication succes replies received from remote end.
CTR pppLinkPapAuthAckTx	1.3.6.1.4.1.208.43.1.8.1.7	Counter	read-only	Number of authentication succes replies transmitted to remote end.
CTR pppLinkPapAuthNackRx	1.3.6.1.4.1.208.43.1.8.1.8	Counter	read-only	Number of authentication succes replies transmitted to remote end.
CTR pppLinkPapAuthNackTx	1.3.6.1.4.1.208.43.1.8.1.9	Counter	read-only	Number of authentication failure replies received from remote end.
pppLinkMlMasterTable	1.3.6.1.4.1.208.43.1.9		not-accessible	Table containing multilink master information. Only used when pppLinkProtoStatePppLinkType = multilinkmaster.
pppLinkMlMasterEntry	1.3.6.1.4.1.208.43.1.9.1		not-accessible
INT pppLinkMlMasterIfIndex	1.3.6.1.4.1.208.43.1.9.1.1	INTEGER	read-only	Interface index.
CTR pppLinkMlMasterSlaveCount	1.3.6.1.4.1.208.43.1.9.1.2	Counter	read-only	Number of slave links in multilink bundle.
CTR pppLinkMlMasterTxUtilization	1.3.6.1.4.1.208.43.1.9.1.3	Counter	read-only	Transmit utilization of current bundle measured in percent.
CTR pppLinkMlMasterRxUtilization	1.3.6.1.4.1.208.43.1.9.1.4	Counter	read-only	Receive utilization of current bundle measured in percent.
CTR pppLinkMlMasterSlavesForwarding	1.3.6.1.4.1.208.43.1.9.1.5	Counter	read-only	Number of forwarding slave links in bundle.
pppLinkMlSlaveTable	1.3.6.1.4.1.208.43.1.10		not-accessible	Table containing multilink slave information. Only used when pppLinkProtoStatePppLinkType = multilinkslave.
pppLinkMlSlaveEntry	1.3.6.1.4.1.208.43.1.10.1		not-accessible
INT pppLinkMlSlaveIfIndex	1.3.6.1.4.1.208.43.1.10.1.1	INTEGER	read-only	Interface index.
INT pppLinkMlSlaveBodEnabled	1.3.6.1.4.1.208.43.1.10.1.2	INTEGER	read-only	Bandwidth on demand enabled for this slave link.
INT pppLinkMlSlaveMasterIfIndex	1.3.6.1.4.1.208.43.1.10.1.3	INTEGER	read-only	Interface index of the corresponding master link.

RFC description

Monitors PPP link protocol states including LCP, IPCP, and compression protocol negotiation.

Start monitoring Routers and WAN access devices running PPP, vendor-neutral standards MIB (RFC 1471) 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 PPP-MIB

What Is PPP-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description