S5-TOK-TOPOLOGY-MIB

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Category: Avaya BayStack Token Ring

Description: Monitors BayStack Token Ring segment topology discovery and ring station connectivity.

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What Is S5-TOK-TOPOLOGY-MIB?

S5-TOK-TOPOLOGY-MIB is a Bay Networks vendor MIB (part of the S5 'System 5000'/BayStack family) that implements SONMP (SynOptics Network Management Protocol) topology discovery for Token Ring segments on Bay Networks Network Management Modules (NMMs). It models per-interface topology control in s5TrTopIfTable (topology on/off, SONMP message transmit speed), discovered peer NMMs on the same flat network in s5TrTopNmmTable (ring number, ring master flag, ring speed, bridge-group/slot/port location), discovered bridges in s5TrTopBdgTable (bridge type, adjacent ring number, port and status fields), and same-ring NMM neighbors in s5TrTopRingNmmTable (chassis/backplane type, upstream-neighbor address), plus encoded octet-string 'packed row' tables for bulk retrieval of each topology table. This is useful for monitoring live Token Ring network topology — which NMMs, bridges, and rings are currently visible via SONMP announcements — and for detecting when expected neighbors disappear from the topology tables, indicating a broken ring or lost adjacency. It is deployed on Bay Networks token ring NMM hardware operating alongside other SynOptics/Bay Networks SONMP-capable devices. Engineers maintaining legacy Bay Networks Token Ring infrastructure can reference the S5-TOK-TOPOLOGY-MIB MIB when auditing ring topology.

IPNetwork Monitor allows you to monitor SNMP objects defined in S5-TOK-TOPOLOGY-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

Bay Networks (SynOptics) Token Ring Network Management Modules

Monitoring Examples

An operator polls s5TrTopNmmTable for entries associated with a given interface's IP address to confirm all expected NMMs on that Token Ring segment are still reporting via SONMP, and checks s5TrTopIfNmmLstChg for recent table changes; an expected NMM's entry disappearing from the table combined with a recent s5TrTopIfNmmLstChg timestamp would indicate that device has dropped off the ring.

What Can Be Monitored

per-interface topology on/off and SONMP transmit speed
discovered NMM ring number and ring-master flag
discovered bridge type and adjacent ring number
same-ring NMM neighbor chassis/backplane type
topology table last-changed timestamps
bridge hello-port and monitor-port status

Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

IpAddress
TimeTicks

From S5-ROOT-MIB

s5TrTop

OBJECT-IDENTITY

From SNMPv2-TC

MacAddress

From SYNOPTICS-ROOT-MIB

SnpxBackplaneType
SnpxChassisType

OIDs

OID symbolic	OID numeric	Type	Access	Description
IP s5TrTopBdgAdjMasterNmmIpAddr	1.3.6.1.4.1.45.1.6.10.3.1.6	IpAddress	read-only	If this entry was created (and/or validated) by a topology message from a master NMM, then the value is its IP address. If the value of object s5TrTopBdgNum is non-zero, then the master NMM is on an adjacent ring. If the value of s5TrTopBdgNum is zero, then the master NMM may be adjacent, or several rings away, separated by one or more transparent bridges. The value for this object is 0.0.0.0 when the bridge generates a topology message and there is no master NMM on the adjacent ring nor one connected to the adjacent ring through one or more transparent bridges.
INT s5TrTopBdgAdjRingNum	1.3.6.1.4.1.45.1.6.10.3.1.5	INTEGER	read-only	The ring number of the adjacent ring that is joined by the bridge. The value is zero if this entry in the table was created due to the receipt of a topology message from another NMM on a different ring and the bridge connecting the rings was a transparent only bridge and it does not generate topology messages.
s5TrTopBdgEntry	1.3.6.1.4.1.45.1.6.10.3.1		not-accessible	A row in the table of known bridges with a Token Ring interface on the same 'flat net' as the reporting NMM. Entries in the table can not be created or deleted via SNMP.
OCT s5TrTopBdgEos	1.3.6.1.4.1.45.1.6.10.8.1.1	OCTET STRING	read-only	An encoded octet string. On reads it contains an integral number of 'rows' from table s5TrTopBdgEntry. All 'rows' are the same size which is defined by object s5TrTopBdgEosSize.
s5TrTopBdgEosEntry	1.3.6.1.4.1.45.1.6.10.8.1		not-accessible	A row in the table of encoded octet strings for table s5TrTopBdgTable. Instance returned in Response PDU: On GETs: instance specified is the instance returned. On GET-NEXTs: instance returned is the instance of the last record contained in the octet string. Entries in the table can not be created or deleted via SNMP.
INT s5TrTopBdgEosSize	1.3.6.1.4.1.45.1.6.10.7	INTEGER	read-only	The current size of a 'row' in the table s5TrTopBdgEosTable. This allows applications to be able to break apart 'rows' in the table.
s5TrTopBdgEosTable	1.3.6.1.4.1.45.1.6.10.8		not-accessible	A table of encoded octet strings of entries in table s5TrTopBdgTable. The number of entries is determined by the packing of 'rows' from s5TrTopBdgTable.
INT s5TrTopBdgHelloPortNum	1.3.6.1.4.1.45.1.6.10.3.1.13	INTEGER	read-only	The port on the bridge from which the topology message was sent. The value zero is used to indicate that the bridge does not transmit topology messages.
INT s5TrTopBdgHelloPortStatus	1.3.6.1.4.1.45.1.6.10.3.1.14	INTEGER	read-only	The status of the port on Bridge from which the topology message was sent. The values are: other(1).............bridge does not send topology messages or port not in defined status tranAct(2)...........Transparent active tranStnBy(3).........Transparent standby srSrsOn(4)...........Source routing single route spanning is on srSrsOff(5)..........Source routing single route spanning is off srSrsOnTranAct(6)....Source routing single route spanning is on, and transparent active srSrsOffTranAct(7)...Source routing single route spanning is off, and transparent active srSrsOnStnBy(8)......Source routing single route spanning is on, and transparent standby srSrsOffStnBy(9).....Source routing single route spanning is off, and transparent standby
INT s5TrTopBdgHelloType	1.3.6.1.4.1.45.1.6.10.3.1.16	INTEGER	read-only	The type of topology message received from the bridge. The values are: other..........bridge does not send any of the recognizable topology message types synoptics(2)...bridge sends SynOptics' topology message
IP s5TrTopBdgIfIpAddr	1.3.6.1.4.1.45.1.6.10.3.1.1	IpAddress	read-only	The IP address of the interface on which the topology message was received.
INT s5TrTopBdgIndx	1.3.6.1.4.1.45.1.6.10.3.1.2	INTEGER	read-only	The index of the entry in the table for the interface.
IP s5TrTopBdgIpAddr	1.3.6.1.4.1.45.1.6.10.3.1.8	IpAddress	read-only	IP address of the bridge sending the topology message. The value is 0.0.0.0 if the bridge does not transmit topology messages.
MAC s5TrTopBdgMacAddr	1.3.6.1.4.1.45.1.6.10.3.1.7	MacAddress	read-only	The MAC address of the bridge port sending the topology message. The value is 00:00:00:00:00:00 if the bridge does not transmit topology messages.
INT s5TrTopBdgMonPortStatus	1.3.6.1.4.1.45.1.6.10.3.1.15	INTEGER	read-only	The status of the 'monitor' port on Bridge from which the topology message was sent. The values are: other(1)...............bridge does not send topology messages or the status of the monitor port is unknown or the bridge does not have a monitor port, or some other condition. phantomOff(2)..........phantom status is off phantomOn(3)...........phantom status is on phantomOffWrapped(4)...phantom off and port wrapped phantomOnWrapped(5)....phantom on and port wrapped wrongSpeedWrap(6)......port wrapped for wrong speed
INT s5TrTopBdgNum	1.3.6.1.4.1.45.1.6.10.3.1.3	INTEGER	read-only	The IEEE 802.5 'bridge number' for the bridge.
INT s5TrTopBdgNumPort	1.3.6.1.4.1.45.1.6.10.3.1.12	INTEGER	read-only	The total number of ports installed on the bridge. The value zero is used to indicate that the bridge does not transmit topology messages.
INT s5TrTopBdgOwnRingNum	1.3.6.1.4.1.45.1.6.10.3.1.4	INTEGER	read-only	The ring number for the reporting NMM. NOTE: this will be the same value for all table entries for each interface.
INT s5TrTopBdgPortNum	1.3.6.1.4.1.45.1.6.10.3.1.11	INTEGER	read-only	The port that the reporting NMM received the topology message from the bridge. The value zero is used to indicate that the bridge does not transmit topology messages or the port from which the message was received can not be determined.
INT s5TrTopBdgSlotNum	1.3.6.1.4.1.45.1.6.10.3.1.10	INTEGER	read-only	The slot that the reporting NMM received the topology message from the bridge. The value zero is used to indicate that the bridge does not transmit topology messages or the slot from which the message was received can not be determined.
s5TrTopBdgTable	1.3.6.1.4.1.45.1.6.10.3		not-accessible	A table that lists each known bridge with a Token Ring interface on the same 'flat net' as the reporting NMM. The number of entries is determined by the number of detected (and active) bridges. Entries are added by reception of a topology message from a bridge or reception of a topology message from an master NMM that was forwarded by a source routing bridge. An entry is removed from the table when no topology messaged are received from bridge in the required time interval.
INT s5TrTopBdgType	1.3.6.1.4.1.45.1.6.10.3.1.9	INTEGER	read-only	The kind of bridge this entry represents. The values come from the topology messages generated by the bridge. The values are: other(1)...........bridge does not send topology messages or is not a defined type t3522Syn2Port(2)...SynOptics 2 port bridge in a modular concentrator t2722Syn2Port(3)...SynOptics 2 port stand-alone bridge tCenTillionTrSwitch(4)...Centillion multi-port TR switch
INT s5TrTopIfBdgCurNum	1.3.6.1.4.1.45.1.6.10.1.1.10	INTEGER	read-only	The current number of entries for the interface in the bridge topology table.
TIK s5TrTopIfBdgLstChg	1.3.6.1.4.1.45.1.6.10.1.1.5	TimeTicks	read-only	The value of sysUpTime when the last addition or deletion of a bridge topology table entry associated with the interface was done. If none have been done since cold/warm start of the agent, then the value is zero.
INT s5TrTopIfBdgMaxNum	1.3.6.1.4.1.45.1.6.10.1.1.9	INTEGER	read-only	The maximum number of entries for the interface in the bridge topology table.
s5TrTopIfEntry	1.3.6.1.4.1.45.1.6.10.1.1		not-accessible	A row in the table of topology status and control for each token ring interface on the NMM. Entries in the table can not be created or deleted via SNMP.
IP s5TrTopIfIpAddr	1.3.6.1.4.1.45.1.6.10.1.1.1	IpAddress	read-only	The IP address of the interface.
INT s5TrTopIfNmmCurNum	1.3.6.1.4.1.45.1.6.10.1.1.8	INTEGER	read-only	The current number of entries for the interface in the NMM topology table.
TIK s5TrTopIfNmmLstChg	1.3.6.1.4.1.45.1.6.10.1.1.4	TimeTicks	read-only	The value of sysUpTime when the last addition or deletion of an NMM topology table entry associated with the interface was done. If none have been done since cold/warm start of the agent, then the value is zero.
INT s5TrTopIfNmmMaxNum	1.3.6.1.4.1.45.1.6.10.1.1.7	INTEGER	read-only	The maximum number of entries for the interface in the NMM topology table.
INT s5TrTopIfNum	1.3.6.1.4.1.45.1.6.10.1.1.2	INTEGER	read-only	The value of ifIndex for the interface.
INT s5TrTopIfRingNmmCurNum	1.3.6.1.4.1.45.1.6.10.1.1.12	INTEGER	read-only	The current number of entries for the interface in the Ring NMM topology table.
TIK s5TrTopIfRingNmmLstChg	1.3.6.1.4.1.45.1.6.10.1.1.6	TimeTicks	read-only	The value of sysUpTime when the last addition or deletion of a Ring NMM topology table entry associated with the interface was done. If none have been done since cold/warm start of the agent, then the value is zero.
INT s5TrTopIfRingNmmMaxNum	1.3.6.1.4.1.45.1.6.10.1.1.11	INTEGER	read-only	The maximum number of entries for the interface in the Ring NMM topology table.
INT s5TrTopIfStatus	1.3.6.1.4.1.45.1.6.10.1.1.3	INTEGER	read-write	Indicates if the interface is participating in topology. The values are: topOn(1)....topology is on topOff(2)...topology is off When the value is topOff(2) the status of entries associated with the interface is undefined. However, the agent should make its best attempt when the value is changed to topOff(2) to remove all existing instances of topology MIB objects for the interface. The agent must save the setting of this object in nonvolatile memory (i.e., save across reboots).
s5TrTopIfTable	1.3.6.1.4.1.45.1.6.10.1		not-accessible	A table with topology status and control for each token ring interface on the NMM. The number of entries is determined by the number of token ring interfaces on the NMM.
INT s5TrTopIfTopSpeed	1.3.6.1.4.1.45.1.6.10.1.1.13	INTEGER	read-write	The Token Ring topology message (SONMP frame) transmit speed. The values that are read/write are: topFast(2)...short interval between transmitting topSlow(3)...long interval between transmitting The value that is readonly is: other(1)...speed unknown, or other value In fast mode, the SONMP frame transmit interval is 10 seconds for all SONMP frames except for ring master which is 5 seconds. In slow mode, the interval is 15 seconds for ring master SONMP frames, 50 seconds for concentrator profile SONMP frames, 60 seconds for master NMM announcement SONMP frames, and 70 seconds for adjacent SONMP frames.
INT s5TrTopNmmBridgeGroupIdentifier	1.3.6.1.4.1.45.1.6.10.2.1.6	INTEGER	read-only	The bridge Group Number of the port on which the ring is connected. This is the ring of the NMM from which the SONMP message was heard for this entry
s5TrTopNmmEntry	1.3.6.1.4.1.45.1.6.10.2.1		not-accessible	A row in the table of topology information about Network Management Modules (NMMs) with a Token Ring interface on the same 'flat network' as the reporting NMM. Entries in the table can not be created or deleted via SNMP.
OCT s5TrTopNmmEos	1.3.6.1.4.1.45.1.6.10.6.1.1	OCTET STRING	read-only	An encoded octet string. On reads it contains an integral number of 'rows' from table s5TrTopNmmTable. All 'rows' are the same size which is defined by object s5TrTopNmmEosSize.
s5TrTopNmmEosEntry	1.3.6.1.4.1.45.1.6.10.6.1		not-accessible	A row in the table of encoded octet strings for table s5TrTopNmmTable. Instance returned in Response PDU: On GETs: instance specified is the instance returned. On GET-NEXTs: instance returned is the instance of the last record contained in the octet string. Entries in the table can not be created or deleted via SNMP.
INT s5TrTopNmmEosSize	1.3.6.1.4.1.45.1.6.10.5	INTEGER	read-only	The current size of a 'row' in the table s5TrTopNmmEosTable. This allows applications to be able to break apart 'rows' in the table.
s5TrTopNmmEosTable	1.3.6.1.4.1.45.1.6.10.6		not-accessible	A table of encoded octet strings of entries in table s5TrTopNmmTable. The number of entries is determined by the packing of 'rows' from s5TrTopNmmTable.
IP s5TrTopNmmIfIpAddr	1.3.6.1.4.1.45.1.6.10.2.1.1	IpAddress	read-only	The IP address of the interface on which the topology message was received.
IP s5TrTopNmmIpAddr	1.3.6.1.4.1.45.1.6.10.2.1.2	IpAddress	read-only	The IP address of an NMM contained in a topology message.
INT s5TrTopNmmPortNum	1.3.6.1.4.1.45.1.6.10.2.1.8	INTEGER	read-only	The Port Number of the port on which the ring is connected. This is the ring of the NMM from which the SONMP message was heard for this entry
INT s5TrTopNmmRingMaster	1.3.6.1.4.1.45.1.6.10.2.1.4	INTEGER	read-only	The classification of an NMM from a topology message. The values are: normal(1)...not a master NMM master(2)...a master NMM
INT s5TrTopNmmRingNum	1.3.6.1.4.1.45.1.6.10.2.1.3	INTEGER	read-only	The ring number on which an NMM from a topology message is located.
INT s5TrTopNmmRingSpeed	1.3.6.1.4.1.45.1.6.10.2.1.5	INTEGER	read-only	The speed of the ring (in units of Mbits) on which an NMM from a topology message is located. The expected values are: 4....4 Mbps 16...16 Mbps
INT s5TrTopNmmSlotNum	1.3.6.1.4.1.45.1.6.10.2.1.7	INTEGER	read-only	The Slot Number of the port on which the ring is connected. This is the ring of the NMM from which the SONMP message was heard for this entry
s5TrTopNmmTable	1.3.6.1.4.1.45.1.6.10.2		not-accessible	A table of topology information for each Network Management Module (NMM) with a Token Ring interface on the same 'flat network' as the reporting NMM. The number of entries is determined by the number of detected (and active) NMMs. Entries in the table are created by reception of a topology message with information about a 'new' NMM. An entry is removed from the table when an NMM is not present in the topology message from a ring, or when no topology messages are received from a ring in the required time interval.
SNP s5TrTopRingNmmBkplType	1.3.6.1.4.1.45.1.6.10.4.1.5	SnpxBackplaneType	read-only	The type of backplane in the chassis containing the NMM that sent the topology message.
SNP s5TrTopRingNmmChassisType	1.3.6.1.4.1.45.1.6.10.4.1.4	SnpxChassisType	read-only	The type of chassis containing the NMM that sent the topology message.
s5TrTopRingNmmEntry	1.3.6.1.4.1.45.1.6.10.4.1		not-accessible	A row in the table of Network Management Modules (NMMs) with a Token Ring interface on the same ring as the reporting NMM. Entries in the table can not be created or deleted via SNMP.
OCT s5TrTopRingNmmEos	1.3.6.1.4.1.45.1.6.10.10.1.1	OCTET STRING	read-only	An encoded octet string. On reads it contains an integral number of 'rows' from table s5TrTopRingNmmTable. All 'rows' are the same size which is defined by object s5TrTopNmmEosSize.
s5TrTopRingNmmEosEntry	1.3.6.1.4.1.45.1.6.10.10.1		not-accessible	A row in the table of encoded octet strings for table s5TrTopRingNmmTable. Instance returned in Response PDU: On GETs: instance specified is the instance returned. On GET-NEXTs: instance returned is the instance of the last record contained in the octet string. Entries in the table can not be created or deleted via SNMP.
INT s5TrTopRingNmmEosSize	1.3.6.1.4.1.45.1.6.10.9	INTEGER	read-only	The current size of a 'row' in the table s5TrTopRingNmmEosTable. This allows applications to be able to break apart 'rows' in the table.
s5TrTopRingNmmEosTable	1.3.6.1.4.1.45.1.6.10.10		not-accessible	A table of encoded octet strings of entries in table s5TrTopRingNmmTable. The number of entries is determined by the packing of 'rows' from s5TrTopRingNmmTable.
IP s5TrTopRingNmmIfIpAddr	1.3.6.1.4.1.45.1.6.10.4.1.1	IpAddress	read-only	The IP address of the interface on which the topology message was received.
IP s5TrTopRingNmmIpAddr	1.3.6.1.4.1.45.1.6.10.4.1.2	IpAddress	read-only	The IP address of the NMM that sent the topology message.
MAC s5TrTopRingNmmMacAddr	1.3.6.1.4.1.45.1.6.10.4.1.3	MacAddress	read-only	The MAC address of the NMM that sent the topology message.
INT s5TrTopRingNmmSlotNum	1.3.6.1.4.1.45.1.6.10.4.1.6	INTEGER	read-only	The slot containing the NMM that sent the topology message.
s5TrTopRingNmmTable	1.3.6.1.4.1.45.1.6.10.4		not-accessible	A table listing all the Network Management Modules (NMMs) with a Token Ring interface on the same ring as the reporting NMM. The number of entries is determined by the number of detected (and active) NMMs. Entries are created by reception of a topology message from a 'new' NMM. An entry is removed from the table when no topology messages are received from the NMM in the required time interval.
IP s5TrTopRingNmmUnaIpAddr	1.3.6.1.4.1.45.1.6.10.4.1.7	IpAddress	read-only	The IP address of the next upstream NMM of the NMM that sent the topology message.

RFC description

Token Ring topology management MIB for Bay Networks switches.

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What Is S5-TOK-TOPOLOGY-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

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RFC description