Wellfleet-PGM-MIB

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Category: Wellfleet BayNetworks Routing Protocols

Description: Monitors Wellfleet PGM (Pragmatic General Multicast) reliable multicast session and NAK statistics.

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What Is Wellfleet-PGM-MIB?

This is a vendor-specific proprietary MIB from Wellfleet Communications (later Bay Networks/Nortel) monitoring PGM (Pragmatic General Multicast), a reliable multicast transport protocol used for applications like financial market data feeds. It exposes PGM session state and NAK (negative acknowledgment)/retransmission statistics. It supports software status monitoring because a rising NAK or retransmission rate directly indicates packet loss in the multicast delivery path, which can cause data feed gaps for latency-sensitive PGM applications. It conceptually parallels the IETF PGM specification (RFC 3208) though implemented as a Wellfleet-proprietary management extension. It is typically deployed on Wellfleet/Bay Networks routers carrying reliable multicast traffic, such as financial data distribution networks, and is documented in the Wellfleet-PGM-MIB MIB.

IPNetwork Monitor allows you to monitor SNMP objects defined in Wellfleet-PGM-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

Wellfleet/Bay Networks routers carrying PGM reliable multicast traffic

Monitoring Examples

No sample_objects were provided for this module; based on the short_desc, an operator would poll the PGM session table for active session state and the associated NAK/retransmission counters. A sharp increase in NAK count for a given PGM session would indicate multicast packet loss upstream, risking gaps in a reliable multicast feed such as market data.

What Can Be Monitored

PGM session state
NAK (negative acknowledgment) count
retransmission count

Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

Counter
Gauge
IpAddress

From Wellfleet-COMMON-MIB

wfPgmGroup

OBJECT-IDENTITY

OIDs

OID symbolic	OID numeric	Type	Access	Description
wfPgm	1.3.6.1.4.1.18.3.5.28.1
INT wfPgmCreate	1.3.6.1.4.1.18.3.5.28.1.1	INTEGER	read-write	Create/Delete parameter. Default is created. Users perform a set operation on this object in order to create/delete PGM.
INT wfPgmEnable	1.3.6.1.4.1.18.3.5.28.1.2	INTEGER	read-write	Enable/Disable Parameter indicates whether this PGM record is enabled or disabled.
INT wfPgmState	1.3.6.1.4.1.18.3.5.28.1.3	INTEGER	read-only	The current state of the entire PGM.
INT wfPgmDebug	1.3.6.1.4.1.18.3.5.28.1.4	INTEGER	read-write	This is a debug field for PGM. Setting bits cause pgm to gernerate certain log messages. This field will NOT restart PGM. The follow bits maybe set in any combination (LS stands for least significant): 0x00000001 for no display 0x00000002 for interface to MTM 0x00000004 for session addition 0x00000008 for session deletion 0x00000010 for retransmit state addition 0x00000020 for retransmit state deletion 0x00000040 for retransmit state timeout 0x00000080 for cache env 0x00000100 for
INT wfPgmSessionLifeTime	1.3.6.1.4.1.18.3.5.28.1.5	INTEGER	read-write	The length of the idle time (seconds) for which a PGM session will be aged out. An idle PGM session means there is no SPM message received from the upstream.
INT wfPgmNnakGenerate	1.3.6.1.4.1.18.3.5.28.1.6	INTEGER	read-write	Router will send NNAK when received the redirect NCF if this parameter is set to enabled.
INT wfPgmMaxReXmitStates	1.3.6.1.4.1.18.3.5.28.1.7	INTEGER	read-write	The Maxium number of retransmit state entries per slot. If no value is set means network element has no limitation on this mib.
GAU wfPgmTotalReXmitStates	1.3.6.1.4.1.18.3.5.28.1.8	Gauge	read-only	The total number of retransmit state entries in retransmit state table.
INT wfPgmMaxSessions	1.3.6.1.4.1.18.3.5.28.1.9	INTEGER	read-write	The Maxium number of source path state sessions per slot. If no value is set means network element has no limitation on this mib.
GAU wfPgmTotalSessions	1.3.6.1.4.1.18.3.5.28.1.10	Gauge	read-only	The total number of source path session entries currently in PGM session table
GAU wfPgmTotalReXmitStatesTimedOut	1.3.6.1.4.1.18.3.5.28.1.11	Gauge	read-only	The total number of retransmit state entries got removed becuase of timed-out (no correspondent RDATA received).
GAU wfPgmTotalUniqueNaks	1.3.6.1.4.1.18.3.5.28.1.12	Gauge	read-only	The total number of unique Naks received.
GAU wfPgmTotalUniqueParityNaks	1.3.6.1.4.1.18.3.5.28.1.13	Gauge	read-only	The total number of unique Parity Naks received.
INT wfPgmMaxNakRate	1.3.6.1.4.1.18.3.5.28.1.14	INTEGER	read-write	The maximum number allowed of Nak per second.
wfPgmIfTable	1.3.6.1.4.1.18.3.5.28.2		not-accessible	Table of PGM Interface Statistics
wfPgmIfEntry	1.3.6.1.4.1.18.3.5.28.2.1		not-accessible	A PGM Interface Statistics entry
INT wfPgmIfCreate	1.3.6.1.4.1.18.3.5.28.2.1.1	INTEGER	read-write	Create or delete
INT wfPgmIfEnable	1.3.6.1.4.1.18.3.5.28.2.1.2	INTEGER	read-write	not used. enabled/Disabled parameter.
INT wfPgmIfState	1.3.6.1.4.1.18.3.5.28.2.1.3	INTEGER	read-only	The current state of the PGM interface.
INT wfPgmIfCct	1.3.6.1.4.1.18.3.5.28.2.1.4	INTEGER	read-only	The PGM circuit number
INT wfPgmIfNakReXmitInterval	1.3.6.1.4.1.18.3.5.28.2.1.5	INTEGER	read-write	The length of time (milliseconds) for which a network element will retransmit a NAK while waiting for a corresponding NCF. This interval is counted down from the transmission of a NAK
INT wfPgmIfMaxNakReXmitRate	1.3.6.1.4.1.18.3.5.28.2.1.6	INTEGER	read-write	The maximum retries of NAK restransmission per second is allowed.
INT wfPgmIfNakRdataInterval	1.3.6.1.4.1.18.3.5.28.2.1.7	INTEGER	read-write	The length of time (seconds) for which a network element will wait for the corresponding RDATA. This interval is counted down from the time a matching NCF is received.
INT wfPgmIfNakEliminateInterval	1.3.6.1.4.1.18.3.5.28.2.1.8	INTEGER	read-write	The length of time (seconds) for which a network element will suspend NAK elimanation for the specific TSI/SQN. .This interval is counted down from the time the first NAK is establish. This value must be smaller than wfPgmNakRdataInterval. If the value of this parameter is set to 1 then all the duplicate NAKs will be elimanated.
CTR wfPgmIfTotalReXmitStates	1.3.6.1.4.1.18.3.5.28.2.1.9	Counter	read-only	The total retransmit state entries for this interface.
CTR wfPgmIfTotalReXmitTimedOut	1.3.6.1.4.1.18.3.5.28.2.1.10	Counter	read-only	The total time-outed retransmit state entries for this interface.
CTR wfPgmIfInSpms	1.3.6.1.4.1.18.3.5.28.2.1.11	Counter	read-only	The total number of SPM received on the PGM interface.
CTR wfPgmIfOutSpms	1.3.6.1.4.1.18.3.5.28.2.1.12	Counter	read-only	The total number of SPM sent out from the PGM interface.
CTR wfPgmIfInParitySpms	1.3.6.1.4.1.18.3.5.28.2.1.13	Counter	read-only	The total number of parity SPM received on the PGM interface
CTR wfPgmIfOutParitySpms	1.3.6.1.4.1.18.3.5.28.2.1.14	Counter	read-only	The total number of parity SPM sent out from the PGM interface
CTR wfPgmIfInSpmPortErrors	1.3.6.1.4.1.18.3.5.28.2.1.15	Counter	read-only	The number of received SPM discarded on the PGM interface for the wrong inbound
CTR wfPgmIfInRdata	1.3.6.1.4.1.18.3.5.28.2.1.16	Counter	read-only	The total number of RDATA received on the PGM interface
CTR wfPgmIfOutRdata	1.3.6.1.4.1.18.3.5.28.2.1.17	Counter	read-only	The total number of RDATA sent out from the PGM interface
CTR wfPgmIfInParityRdata	1.3.6.1.4.1.18.3.5.28.2.1.18	Counter	read-only	The total number of Parity RDATA received on the PGM interface
CTR wfPgmIfOutParityRdata	1.3.6.1.4.1.18.3.5.28.2.1.19	Counter	read-only	The total number of parity RDATA sent out from the PGM interface
CTR wfPgmIfInRdataPortErrors	1.3.6.1.4.1.18.3.5.28.2.1.20	Counter	read-only	The number of received RDATA discarded because of wrong inbound
CTR wfPgmIfInRdataNoSessionErrors	1.3.6.1.4.1.18.3.5.28.2.1.21	Counter	read-only	The number of received RDATA discarded because of no session
CTR wfPgmIfUniqueNaks	1.3.6.1.4.1.18.3.5.28.2.1.22	Counter	read-only	The total number of unique NAKs received for this interface.
CTR wfPgmIfInNaks	1.3.6.1.4.1.18.3.5.28.2.1.23	Counter	read-only	The total number of NAK received on the PGM interface
CTR wfPgmIfOutNaks	1.3.6.1.4.1.18.3.5.28.2.1.24	Counter	read-only	The total number of NAK sent out from the PGM interface
CTR wfPgmIfUniqueParityNaks	1.3.6.1.4.1.18.3.5.28.2.1.25	Counter	read-only	The total number of unique parity NAKs received for this interface.
CTR wfPgmIfInParityNaks	1.3.6.1.4.1.18.3.5.28.2.1.26	Counter	read-only	The total number of parity NAK received on the PGM interface
CTR wfPgmIfOutParityNaks	1.3.6.1.4.1.18.3.5.28.2.1.27	Counter	read-only	The total number of parity NAK sent out from the PGM interface
CTR wfPgmIfInNakPortErrors	1.3.6.1.4.1.18.3.5.28.2.1.28	Counter	read-only	The number of received NAK discarded because of wrong outbound
CTR wfPgmIfInNakNoSessionErrors	1.3.6.1.4.1.18.3.5.28.2.1.29	Counter	read-only	The number of received NAK Discarded because of no session
CTR wfPgmIfInNakSeqErrors	1.3.6.1.4.1.18.3.5.28.2.1.30	Counter	read-only	The number of received NAK Discarded because of out of sequence (out of retransmit window).
CTR wfPgmIfInParityNakTgErrors	1.3.6.1.4.1.18.3.5.28.2.1.31	Counter	read-only	The number of received parity NAK Discarded because of out of parity TG window.
CTR wfPgmIfInNnaks	1.3.6.1.4.1.18.3.5.28.2.1.32	Counter	read-only	The total number of NNAK received on the PGM interface
CTR wfPgmIfOutNnaks	1.3.6.1.4.1.18.3.5.28.2.1.33	Counter	read-only	The total number of NNAK sent out from the PGM interface
CTR wfPgmIfInParityNnaks	1.3.6.1.4.1.18.3.5.28.2.1.34	Counter	read-only	The total number of parity NNAK received on the PGM interface
CTR wfPgmIfOutParityNnaks	1.3.6.1.4.1.18.3.5.28.2.1.35	Counter	read-only	The total number of parity NNAK sent out from the PGM interface
CTR wfPgmIfInNnakPortErrors	1.3.6.1.4.1.18.3.5.28.2.1.36	Counter	read-only	The number of received NNAK discarded because of wrong mcast outbound
CTR wfPgmIfInNnakNoSessionErrors	1.3.6.1.4.1.18.3.5.28.2.1.37	Counter	read-only	The number of received NNAK discarded because of no session
CTR wfPgmIfInNcfs	1.3.6.1.4.1.18.3.5.28.2.1.38	Counter	read-only	The total number of NCF received on the PGM interface
CTR wfPgmIfOutNcfs	1.3.6.1.4.1.18.3.5.28.2.1.39	Counter	read-only	The total number of NCF sent out from the PGM interface
CTR wfPgmIfInParityNcfs	1.3.6.1.4.1.18.3.5.28.2.1.40	Counter	read-only	The total number of parity NCF received on the PGM interface
CTR wfPgmIfOutParityNcfs	1.3.6.1.4.1.18.3.5.28.2.1.41	Counter	read-only	The total number of parity NCF sent out from the PGM interface
CTR wfPgmIfInNcfPortErrors	1.3.6.1.4.1.18.3.5.28.2.1.42	Counter	read-only	The number of received NCF discarded because of the wrong inbound
CTR wfPgmIfInNcfNoSessionErrors	1.3.6.1.4.1.18.3.5.28.2.1.43	Counter	read-only	The number of received NCF discarded because of no session
CTR wfPgmIfInRedirectNcfs	1.3.6.1.4.1.18.3.5.28.2.1.44	Counter	read-only	The number of redirected NCF received on the PGM interface
wfPgmSessionTable	1.3.6.1.4.1.18.3.5.28.3		not-accessible	Table of PGM flow for each (port,global id)
wfPgmSessionEntry	1.3.6.1.4.1.18.3.5.28.3.1		not-accessible	A PGM Session entry
IP wfPgmSessionSource	1.3.6.1.4.1.18.3.5.28.3.1.1	IpAddress	read-only	The source IP address of this entry.
IP wfPgmSessionGroup	1.3.6.1.4.1.18.3.5.28.3.1.2	IpAddress	read-only	The destination group address of this entry
INT wfPgmSessionSourcePort	1.3.6.1.4.1.18.3.5.28.3.1.3	INTEGER	read-only	The source port of this pgm session
OCT wfPgmSessionGlobalId	1.3.6.1.4.1.18.3.5.28.3.1.4	OCTET STRING	read-only	The Global ID this entry
IP wfPgmSessionUpstreamAddress	1.3.6.1.4.1.18.3.5.28.3.1.5	IpAddress	read-only	The IP address of the upstream interface for the entry.
INT wfPgmSessionUpstreamIfCct	1.3.6.1.4.1.18.3.5.28.3.1.6	INTEGER	read-only	The circuit number of the upstream intf for the entry.
CTR wfPgmSessionTrailEdgeSeq	1.3.6.1.4.1.18.3.5.28.3.1.7	Counter	read-only	The trailing edge sequence of the transfer window.
CTR wfPgmSessionIncrSeq	1.3.6.1.4.1.18.3.5.28.3.1.8	Counter	read-only	The increase sequnce number in the transfer window.
CTR wfPgmSessionLeadEdgeSeq	1.3.6.1.4.1.18.3.5.28.3.1.9	Counter	read-only	The leading edge sequence of the transfer window.
CTR wfPgmSessionInSpms	1.3.6.1.4.1.18.3.5.28.3.1.10	Counter	read-only	The total number of SPMs received for this session.
CTR wfPgmSessionOutSpms	1.3.6.1.4.1.18.3.5.28.3.1.11	Counter	read-only	The total number of SPMs sent out for this session.
CTR wfPgmSessionInParitySpms	1.3.6.1.4.1.18.3.5.28.3.1.12	Counter	read-only	The total number of ParityS PMs received for this session.
CTR wfPgmSessionOutParitySpms	1.3.6.1.4.1.18.3.5.28.3.1.13	Counter	read-only	The total number of Parity SPMs sent out for this session.
CTR wfPgmSessionTotalReXmitStates	1.3.6.1.4.1.18.3.5.28.3.1.14	Counter	read-only	The total retransmit state entries for this session.
CTR wfPgmSessionTotalReXmitTimedOut	1.3.6.1.4.1.18.3.5.28.3.1.15	Counter	read-only	The total time-outed retransmit state entries for this session.
CTR wfPgmSessionInRdata	1.3.6.1.4.1.18.3.5.28.3.1.16	Counter	read-only	The total number of RDATAs received for this session.
CTR wfPgmSessionOutRdata	1.3.6.1.4.1.18.3.5.28.3.1.17	Counter	read-only	The total number of RDATAs sent out from this session.
CTR wfPgmSessionInParityRdata	1.3.6.1.4.1.18.3.5.28.3.1.18	Counter	read-only	The total number of parity RDATAs received for this session.
CTR wfPgmSessionOutParityRdata	1.3.6.1.4.1.18.3.5.28.3.1.19	Counter	read-only	The total number of parity RDATAs sent out from this session.
CTR wfPgmSessionInRdataNoStateErrors	1.3.6.1.4.1.18.3.5.28.3.1.20	Counter	read-only	The total number of received RDATA discarded for no Retransmit state.
CTR wfPgmSessionUniqueNaks	1.3.6.1.4.1.18.3.5.28.3.1.21	Counter	read-only	The total number of unique NAKs received for this session.
CTR wfPgmSessionInNaks	1.3.6.1.4.1.18.3.5.28.3.1.22	Counter	read-only	The total number of NAKs received for this session.
CTR wfPgmSessionOutNaks	1.3.6.1.4.1.18.3.5.28.3.1.23	Counter	read-only	The total number of NAKs sent out from this session.
CTR wfPgmSessionUniqueParityNaks	1.3.6.1.4.1.18.3.5.28.3.1.24	Counter	read-only	The total number of unique parity NAKs received for this session.
CTR wfPgmSessionInParityNaks	1.3.6.1.4.1.18.3.5.28.3.1.25	Counter	read-only	The total number of parity NAKs received for this session.
CTR wfPgmSessionOutParityNaks	1.3.6.1.4.1.18.3.5.28.3.1.26	Counter	read-only	The total number of parity NAKs sent out from this session.
CTR wfPgmSessionInNakSeqErrors	1.3.6.1.4.1.18.3.5.28.3.1.27	Counter	read-only	The total number of received NAKs discarded because of out of sequence (out of retransmit window).
CTR wfPgmSessionInNnaks	1.3.6.1.4.1.18.3.5.28.3.1.28	Counter	read-only	The total number of NNAKs received for this session.
CTR wfPgmSessionOutNnaks	1.3.6.1.4.1.18.3.5.28.3.1.29	Counter	read-only	The total number of NNAKs sent out from this session.
CTR wfPgmSessionInParityNnaks	1.3.6.1.4.1.18.3.5.28.3.1.30	Counter	read-only	The total number of parity NNAKs received for this session.
CTR wfPgmSessionOutParityNnaks	1.3.6.1.4.1.18.3.5.28.3.1.31	Counter	read-only	The total number of Parity NNAKs sent out from this session.
CTR wfPgmSessionInNcfs	1.3.6.1.4.1.18.3.5.28.3.1.32	Counter	read-only	The total number of Ncfs received for this session.
CTR wfPgmSessionOutNcfs	1.3.6.1.4.1.18.3.5.28.3.1.33	Counter	read-only	The total number of Ncfs sent out from this session.
CTR wfPgmSessionInParityNcfs	1.3.6.1.4.1.18.3.5.28.3.1.34	Counter	read-only	The total number of Parity Ncfs received for this session.
CTR wfPgmSessionOutParityNcfs	1.3.6.1.4.1.18.3.5.28.3.1.35	Counter	read-only	The total number of Parity Ncfs sent out from this session.
CTR wfPgmSessionInRedirectNcfs	1.3.6.1.4.1.18.3.5.28.3.1.36	Counter	read-only	The total number of redirect Ncfs received for this session.
wfPgmReXmitTable	1.3.6.1.4.1.18.3.5.28.4		not-accessible	Table of PGM Retransmit state
wfPgmReXmitEntry	1.3.6.1.4.1.18.3.5.28.4.1		not-accessible	A PGM ReXmit entry
IP wfPgmReXmitSource	1.3.6.1.4.1.18.3.5.28.4.1.1	IpAddress	read-only	The source IP address of this entry.
IP wfPgmReXmitGroup	1.3.6.1.4.1.18.3.5.28.4.1.2	IpAddress	read-only	The destination group address of this entry
INT wfPgmReXmitSourcePort	1.3.6.1.4.1.18.3.5.28.4.1.3	INTEGER	read-only	The source port of this pgm retransmit state
OCT wfPgmReXmitGlobalId	1.3.6.1.4.1.18.3.5.28.4.1.4	OCTET STRING	read-only	The Global ID this entry
INT wfPgmReXmitSelectiveSeqNum	1.3.6.1.4.1.18.3.5.28.4.1.5	INTEGER	read-only	The Selected Sequence number for this entry.
INT wfPgmReXmitParityTgSeqNum	1.3.6.1.4.1.18.3.5.28.4.1.6	INTEGER	read-only	The Requested Parity Tg sequence number for this entry. this value will be the same as wfPgmSessionParityTgSeq.
INT wfPgmReXmitReqParityTgCount	1.3.6.1.4.1.18.3.5.28.4.1.7	INTEGER	read-only	The Requested number of missing Parity packets of specific Tg. The largest counter of the received NAK will be stored in this mib.
INT wfPgmReXmitUpStreamCct	1.3.6.1.4.1.18.3.5.28.4.1.8	INTEGER	read-only	The upstream interface circuit number.
OCT wfPgmReXmitDownStream	1.3.6.1.4.1.18.3.5.28.4.1.9	OCTET STRING	read-only	list of downstream intfs for this entry. Each one is in the format of (intf_addr(u_int32) and intf_cct(u_int16)

RFC description

SNMP MIB module for managing Pragmatic General Multicast (PGM), a reliable multicast transport protocol providing ordered, duplicate-free data delivery from multiple sources to multiple receivers over IP networks.

Start monitoring Wellfleet/Bay Networks routers carrying PGM reliable multicast traffic (NAK/retransmission counter 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 Wellfleet-PGM-MIB

What Is Wellfleet-PGM-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description