A3COM-SWITCHING-SYSTEMS-TOKEN-RING-MIB

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Category: Network Interfaces, Vendor: 3Com

Description: Manages Token Ring network interfaces and ring parameters on 3Com SuperStack switching systems, including MAC statistics and ring station information.

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What Is A3COM-SWITCHING-SYSTEMS-TOKEN-RING-MIB?

A3COM-SWITCHING-SYSTEMS-TOKEN-RING-MIB is a 3Com private enterprise MIB for Token Ring modules/ports on 3Com SuperStack-era switching systems, describing per-port Token Ring configuration and line-level statistics. It exposes a port table (a3ComSysTokenRingPortTable) with configuration items like port label, type, mode and speed, alongside operational/fault data such as ring insertion status (a3ComSysTokenRingPortInsertStatus), line errors, and burst errors. Its monitoring value is chiefly in hardware/link-health terms: administrators watch insertion status to confirm a station has successfully joined the ring, and line/burst error counters to catch cabling or NIC problems on a legacy Token Ring segment before they cause ring beaconing or station insertion failures. It complements standard Token Ring MIBs (dot5-style objects) by adding 3Com-specific port indexing and labeling on top of ifIndex. This MIB applies to legacy 3Com SuperStack switching hardware still supporting Token Ring in older enterprise LANs, a technology largely phased out in favor of Ethernet. Engineers can download the A3COM-SWITCHING-SYSTEMS-TOKEN-RING-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in A3COM-SWITCHING-SYSTEMS-TOKEN-RING-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

3Com SuperStack switching systems (Token Ring modules)

Monitoring Examples

An admin would walk a3ComSysTokenRingPortTable (indexed by a3ComSysTokenRingPortIndex) and check a3ComSysTokenRingPortInsertStatus to confirm a station remains inserted on the ring, cross-referencing a3ComSysTokenRingPortIfIndex to the standard interfaces table. Rising a3ComSysTokenRingPortLineErrors or a3ComSysTokenRingPortBurstErrors on a specific port points to a failing cable, connector, or adapter causing ring instability. a3ComSysTokenRingPortSpeed and a3ComSysTokenRingPortMode confirm the port is still correctly negotiated in the expected ring mode.

What Can Be Monitored

ring insertion status
line error count
burst error count
port speed/mode
port type and label

Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC-1215

TRAP-TYPE

From RFC1155-SMI

Counter
IpAddress
enterprises

From RFC1213-MIB

DisplayString

OIDs

OID symbolic	OID numeric	Type	Access	Description
a3Com	1.3.6.1.4.1.43
a3ComSwitchingSystemsMib	1.3.6.1.4.1.43.29.4
a3ComSysTokenRingPort	1.3.6.1.4.1.43.29.4.13
CTR a3ComSysTokenRingPortAbortTransErrors	1.3.6.1.4.1.43.29.4.13.2.1.11	Counter	read-only	This counter is incremented when a station transmits an abort delimiter while transmitting.
CTR a3ComSysTokenRingPortACErrors	1.3.6.1.4.1.43.29.4.13.2.1.10	Counter	read-only	This counter is incremented when a station receives an AMP or SMP frame in which A is equal to C is equal to 0, and then receives another SMP frame with A is equal to C is equal to 0 without first receiving an AMP frame. It denotes a station that cannot set the AC bits properly.
CTR a3ComSysTokenRingPortBurstErrors	1.3.6.1.4.1.43.29.4.13.2.1.9	Counter	read-only	This counter is incremented when a station detects the absence of transitions for five half-bit timers (burst-five error).
INT a3ComSysTokenRingPortCount	1.3.6.1.4.1.43.29.4.13.1	INTEGER	read-only	The count of token ring ports managed by this agent.
a3ComSysTokenRingPortEntry	1.3.6.1.4.1.43.29.4.13.2.1		not-accessible	A token ring port entry contains information about a particular token ring port managed by this agent.
CTR a3ComSysTokenRingPortFrameCopiedErrors	1.3.6.1.4.1.43.29.4.13.2.1.15	Counter	read-only	This counter is incremented when a station recognizes a frame addressed to its specific address and detects that the FS field A bits are set to 1 indicating a possible line hit or duplicate address.
CTR a3ComSysTokenRingPortFreqErrors	1.3.6.1.4.1.43.29.4.13.2.1.23	Counter	read-only	The number of times the interface has detected that the frequency of the incoming signal differs from the expected frequency.
CTR a3ComSysTokenRingPortHardErrors	1.3.6.1.4.1.43.29.4.13.2.1.18	Counter	read-only	The number of times this interface has detected an immediately recoverable fatal error. It denotes the number of times this interface is either transmitting or receiving beacon MAC frames.
INT a3ComSysTokenRingPortIfIndex	1.3.6.1.4.1.43.29.4.13.2.1.2	INTEGER	read-only	The value of the MIB-II ifIndex corresponding to the token ring port identified by this entry.
INT a3ComSysTokenRingPortIndex	1.3.6.1.4.1.43.29.4.13.2.1.1	INTEGER	read-only	The index of the token ring port identified by this entry, relative to this agent.
INT a3ComSysTokenRingPortInsertStatus	1.3.6.1.4.1.43.29.4.13.2.1.4	INTEGER	read-only	The current value of the link status for the token ring port identified by this entry.
CTR a3ComSysTokenRingPortInternalErrors	1.3.6.1.4.1.43.29.4.13.2.1.12	Counter	read-only	This counter is incremented when a station recognizes an internal error.
STR a3ComSysTokenRingPortLabel	1.3.6.1.4.1.43.29.4.13.2.1.3	DisplayString	read-write	An ASCII text string describing the token ring port identified by this entry.
CTR a3ComSysTokenRingPortLineErrors	1.3.6.1.4.1.43.29.4.13.2.1.8	Counter	read-only	This counter is incremented when a frame or token is copied or repeated by a station, the E bit is zero in the frame or token and one of the following conditions exists: 1) there is a non-data bit (J or K bit) between the SD and the ED of the frame or token, or 2) there is an FCS error in the frame.
CTR a3ComSysTokenRingPortLobeWires	1.3.6.1.4.1.43.29.4.13.2.1.20	Counter	read-only	The number of times the interface has detected an open or short circuit in the lobe data path. The adapter will be closed when this condition occurs.
CTR a3ComSysTokenRingPortLostFrameErrors	1.3.6.1.4.1.43.29.4.13.2.1.13	Counter	read-only	This counter is incremented when a station is transmitting and its TRR timer expires. This condition denotes a condition where a transmitting station in strip mode does not receive the trailer of the frame before the TRR timer goes off.
INT a3ComSysTokenRingPortMode	1.3.6.1.4.1.43.29.4.13.2.1.6	INTEGER	read-write	The current mode of the port. The default mode (station) is used to connect a hub to the port. Lobe mode is used to direct connect a Token Ring station into the port. This selection can only be made on ports 1 and 2 of the module.
CTR a3ComSysTokenRingPortReceiveCongestionErrors	1.3.6.1.4.1.43.29.4.13.2.1.14	Counter	read-only	This counter is incremented when a station recognizes a frame addressed to its specific address, but has no available buffer space indicating that the station is congested.
CTR a3ComSysTokenRingPortRemoves	1.3.6.1.4.1.43.29.4.13.2.1.21	Counter	read-only	The number of times the interface has received a Remove Ring Station MAC frame request. When this frame is received the interface will enter the close state.
INT a3ComSysTokenRingPortRingStatus	1.3.6.1.4.1.43.29.4.13.2.1.24	INTEGER	read-only	The current interface status which can be used to diagnose fluctuating problems that can occur on token rings, after a station has successfully been added to the ring. Before an open is completed, this object has the value for the 'no status' condition. This object is useful for debugging problems when the station can not even enter the ring. The object's value is a sum of values, one for each currently applicable condition. The following values are defined for various conditions: 0 = No Problems detected 32 = Ring Recovery 64 = Single Station 256 = Remove Received 512 = reserved 1024 = Auto-Removal Error 2048 = Lobe Wire Fault 4096 = Transmit Beacon 8192 = Soft Error 16384 = Hard Error 32768 = Signal Loss 131072 = no status, open not completed.
CTR a3ComSysTokenRingPortSingles	1.3.6.1.4.1.43.29.4.13.2.1.22	Counter	read-only	The number of times the interface has sensed that it is the only station on the ring. This will happen if the interface is the first one up on a ring, or if there is a hardware problem.
CTR a3ComSysTokenRingPortSoftErrors	1.3.6.1.4.1.43.29.4.13.2.1.17	Counter	read-only	The number of Soft Errors the interface has detected. It directly corresponds to the number of Report Error MAC frames that this interface has transmitted. Soft Errors are those which are recoverable by the MAC layer protocols.
INT a3ComSysTokenRingPortSpeed	1.3.6.1.4.1.43.29.4.13.2.1.7	INTEGER	read-write	The current speed of the port. The default speed is sixteenMegabit.
a3ComSysTokenRingPortTable	1.3.6.1.4.1.43.29.4.13.2		not-accessible	A list of token ring port entries. A single entry exists in this list for each token ring port managed by this agent.
CTR a3ComSysTokenRingPortTokenErrors	1.3.6.1.4.1.43.29.4.13.2.1.16	Counter	read-only	This counter is incremented when a station acting as the active monitor recognizes an error condition that needs a token transmitted.
CTR a3ComSysTokenRingPortTransmitBeacons	1.3.6.1.4.1.43.29.4.13.2.1.19	Counter	read-only	The number of times this interface has transmitted a beacon frame.
INT a3ComSysTokenRingPortType	1.3.6.1.4.1.43.29.4.13.2.1.5	INTEGER	read-only	Specific port type description for the token ring port identified by this entry.
switchingSystemsMibs	1.3.6.1.4.1.43.29

RFC description

Monitors token ring port status, errors, and insertion statistics on 3Com switching systems.

Start monitoring 3Com SuperStack switches (legacy, Token Ring) 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 A3COM-SWITCHING-SYSTEMS-TOKEN-RING-MIB

What Is A3COM-SWITCHING-SYSTEMS-TOKEN-RING-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description