Wellfleet-SMDS-MIB

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Category: Wellfleet BayNetworks WAN Interfaces

Description: Monitors Wellfleet SMDS (Switched Multimegabit Data Service) interface parameters and traffic statistics.

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What Is Wellfleet-SMDS-MIB?

The Wellfleet-SMDS-MIB is a Wellfleet Communications proprietary MIB for managing Switched Multimegabit Data Service (SMDS) WAN interfaces on Wellfleet routers, a metropolitan-area packet-switched service technology common in early-1990s carrier networks. It exposes interface configuration objects (SMDS address, access class) and traffic statistics counters for cells/packets sent and received over the SMDS access link. Its monitoring role centers on link/service health: administrators use it to confirm the SMDS access circuit is registered and passing traffic, and to spot traffic drops or address-screening rejections that indicate a carrier provisioning mismatch. It parallels, without formally requiring, the IETF SMDS Interface Protocol MIB conventions of the era. It was deployed on Wellfleet/Bay Networks routers connecting enterprise sites to carrier SMDS metropolitan-area networks before those services were superseded by Frame Relay and ATM. Engineers can download the Wellfleet-SMDS-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in Wellfleet-SMDS-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 router
Bay Networks/Nortel router with SMDS WAN interfaces

Monitoring Examples

An engineer checks the SMDS interface configuration to confirm the individual and group SMDS addresses match what the carrier has provisioned, then polls the traffic statistics counters for sent/received cells. A high count of address-screening rejections alongside normal cell counts on the wire typically indicates a mismatched SMDS address table rather than a physical circuit problem.

What Can Be Monitored

SMDS address configuration
access class settings
cell/packet traffic counters
address screening rejections

Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

Counter

From Wellfleet-COMMON-MIB

wfWanGroup

OBJECT-IDENTITY

OIDs

OID symbolic	OID numeric	Type	Access	Description
wfSmdsCircuitTable	1.3.6.1.4.1.18.3.5.9.3		not-accessible	The Wellfleet SMDS Circuit Record
wfSmdsCircuitEntry	1.3.6.1.4.1.18.3.5.9.3.1		not-accessible	per Wellfleet circuit SMDS configuration parameters and counters
INT wfSmdsCircuitDelete	1.3.6.1.4.1.18.3.5.9.3.1.1	INTEGER	read-write	create/delete parameter, dflt = created
INT wfSmdsCircuitDisable	1.3.6.1.4.1.18.3.5.9.3.1.2	INTEGER	read-write	enable/disable parameter, dflt = enabled
INT wfSmdsCircuitState	1.3.6.1.4.1.18.3.5.9.3.1.3	INTEGER	read-only	SMDS state variable, Up, Down Init, Not Present
INT wfSmdsCircuitID	1.3.6.1.4.1.18.3.5.9.3.1.4	INTEGER	read-only	cct number for this instance
OCT wfSmdsCircuitIndivAddr	1.3.6.1.4.1.18.3.5.9.3.1.5	OCTET STRING	read-write	SMDS E.164 Individual address for this Wellfleet circuit - must be 8 octets long
OCT wfSmdsCircuitGroupAddr	1.3.6.1.4.1.18.3.5.9.3.1.6	OCTET STRING	read-write	SMDS E.164 Group address for this Wellfleet circuit - must be 8 octets long
OCT wfSmdsCircuitArpAddr	1.3.6.1.4.1.18.3.5.9.3.1.7	OCTET STRING	read-write	SMDS E.164 ARP address for this Wellfleet circuit - must be 8 octets long
INT wfSmdsCircuitDisableHrtbtPoll	1.3.6.1.4.1.18.3.5.9.3.1.8	INTEGER	read-write	determine use of DXI heartbeat poll
INT wfSmdsCircuitHrtbtPollInterval	1.3.6.1.4.1.18.3.5.9.3.1.9	INTEGER	read-write	heartbeat polling messages get sent every this many seconds - we don't want the polling interval to be less than or equal to the unacknowledgment timer, which is 5 seconds
INT wfSmdsCircuitHrtbtPollDownCount	1.3.6.1.4.1.18.3.5.9.3.1.10	INTEGER	read-write	if this many consecutive heartbeat polling messages go unacknowledged, log an event declaring the line down
INT wfSmdsCircuitDisableNetMgmt	1.3.6.1.4.1.18.3.5.9.3.1.11	INTEGER	read-write	determine use of LMI network management
CTR wfSmdsCircuitSipL3ReceivedIndividualDAs	1.3.6.1.4.1.18.3.5.9.3.1.12	Counter	read-only	The total number of individually addressed SIP Level 3 PDUs received from the remote system across the SNI. The total includes only unerrored L3PDUs.
CTR wfSmdsCircuitSipL3ReceivedGAs	1.3.6.1.4.1.18.3.5.9.3.1.13	Counter	read-only	The total number of group addressed SIP Level 3 PDUs received from the remote system across the SNI. The total includes only unerrored L3PDUs.
CTR wfSmdsCircuitSipL3SentIndividualDAs	1.3.6.1.4.1.18.3.5.9.3.1.14	Counter	read-only	The number of individually addressed SIP Level 3 PDUs that have been sent by this system across the SNI.
CTR wfSmdsCircuitSipL3SentGAs	1.3.6.1.4.1.18.3.5.9.3.1.15	Counter	read-only	The number of group addressed SIP L3PDUs that have been sent by this system across the SNI.
INT wfSmdsCircuitSipL3VersionSupport	1.3.6.1.4.1.18.3.5.9.3.1.16	INTEGER	read-only	A value which indicates the version(s) of SIP that this interface supports. The value is a sum. This sum initially takes the value zero. For each version, V, that this interface supports, 2 raised to (V - 1) is added to the sum. For example, a port supporting versions 1 and 2 would have a value of (2^(1-1)+2^(2-1))=3. The SipL3VersionSupport is effectively a bit mask with Version 1 equal to the least significant bit (LSB).
INT wfSmdsCircuitDisableAddrVerify	1.3.6.1.4.1.18.3.5.9.3.1.17	INTEGER	read-write	This object enables/disables verification checking of destination addresses in received packets.
CTR wfSmdsCircuitAddrVerifyDiscards	1.3.6.1.4.1.18.3.5.9.3.1.18	Counter	read-only	This is the count of SMDS PDUs discarded due to mismatched group or individual addresses

RFC description

Wellfleet SMDS circuit configuration and performance counters for switched multimegabit data service.

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Download Wellfleet-SMDS-MIB

What Is Wellfleet-SMDS-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description