RIVERSTONE-ATM-MIB

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Organization: Riverstone Networks, Inc

Last Updated: 2001-01-31

Category: ATM, Riverstone Networks

Description: Manages ATM interface configuration, virtual circuit parameters, and traffic statistics on Riverstone routers.

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What Is RIVERSTONE-ATM-MIB?

RIVERSTONE-ATM-MIB is a Riverstone Networks enterprise MIB extending IETF standard ATM MIBs, focused specifically on the ATM forwarding database (FDB) that maps learned MAC addresses to the ATM permanent virtual circuit (PVC) they were seen on. It exposes objects for ATM interface configuration, per-VC parameters, and MAC-to-PVC forwarding/learning data, alongside conformance/compliance groups for the module itself. Its monitoring role is centered on layer-2/ATM forwarding software status: rsAtmFdbMacsLearned tracks how many MAC addresses the switch has learned over ATM PVCs, and rsAtmFdbTable entries (keyed by VPI/VCI) let an administrator confirm which end stations are reachable over which virtual circuit, useful for diagnosing bridging/forwarding problems on ATM-based Riverstone equipment. It is explicitly an enterprise extension to IETF standard ATM MIBs, adding Riverstone-specific FDB mapping on top of the standard ATM interface/VC model rather than replacing it. It would be deployed on Riverstone Networks RS-series switch/routers used in ATM-based enterprise or carrier backbone networks. Engineers can download the RIVERSTONE-ATM-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in RIVERSTONE-ATM-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

Riverstone Networks RS-series ATM switch/routers

Monitoring Examples

An administrator would poll rsAtmFdbTable/rsAtmFdbEntry to see learned MAC addresses along with their rsAtmFdbVpi and rsAtmFdbVci values, and watch rsAtmFdbMacsLearned as a gauge of forwarding-table size; an unexpectedly low or dropping MAC-learned count combined with missing expected entries for a known end station would indicate an ATM PVC or bridging fault on that Riverstone platform.

What Can Be Monitored

learned MAC addresses over ATM PVCs
MAC-to-VPI/VCI forwarding table entries
ATM interface/VC configuration

Imported Objects

From ATM-TC-MIB

AtmVcIdentifier
AtmVpIdentifier

From BRIDGE-MIB

dot1dTpFdbAddress

From RSTONE-SMI-MIB

riverstoneMibs

OBJECT-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Gauge32
MODULE-IDENTITY
OBJECT-TYPE

How to Use in IPNetwork Monitor

Example using rsAtmFdbMacsLearned OID:

Select a Riverstone Networks RS-series ATM switch/router (MAC-to-PVC forwarding database) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type rsAtmFdbMacsLearned into the Find box to locate it in the OID tree, then select it and click OK. It reports the number of MAC addresses learned on ATM line cards system. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Gauge32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
rsAtmMib	1.3.6.1.4.1.5567.2.16			This MIB module defines enterprise extensions to IETF Standard MIB modules. rsAtmFdbObjects group defines a mapping from a MAC address to the ATM PVC on which it was learned. Copyright (C) Riverstone Networks, Inc 2001
rsAtmFdbObjects	1.3.6.1.4.1.5567.2.16.1
G32 rsAtmFdbMacsLearnedEx	1.3.6.1.4.1.5567.2.16.1.1	Gauge32	read-only	Number of MAC addresses learned on ATM line cards system.
rsAtmFdbTable	1.3.6.1.4.1.5567.2.16.1.2		not-accessible	This table provides a mapping of a MAC address to the bridge port, plus Virtual Path Identifier/Virtual Channel Identifier (VPI/VCI) on which it was learned. A row will appear in this table for each row in dot1dTpFdbTable that maps to a bridge port (dot1dBasePortNum) which is of type ATM ifType(37). Rows in this table share the same fate as rows in dot1dTpFdbTable.
rsAtmFdbEntry	1.3.6.1.4.1.5567.2.16.1.2.1		not-accessible	An entry in the table shares the same fate as an entry in dot1dTpFdbTable and uses the same indexing.
OID rsAtmFdbVpi	1.3.6.1.4.1.5567.2.16.1.2.1.1	AtmVpIdentifier	read-only	The Virtual Path Identifier on which this MAC address was learned.
OID rsAtmFdbVci	1.3.6.1.4.1.5567.2.16.1.2.1.2	AtmVcIdentifier	read-only	The Virtual Channel Identifier on which this MAC address was learned.
rsAtmFdbConformance	1.3.6.1.4.1.5567.2.16.10
rsAtmFdbGroups	1.3.6.1.4.1.5567.2.16.10.1
rsAtmFdbBaseGroup	1.3.6.1.4.1.5567.2.16.10.1.1			A collection of objects providing a mapping between a MAC address and the ATM vpi/vci it was learned on.
rsAtmFdbCompliances	1.3.6.1.4.1.5567.2.16.10.2
rsAtmFdbMibCompliance	1.3.6.1.4.1.5567.2.16.10.2.1			The compliance statement for device support of extension to dot1dTpFdbTable for ATM interfaces.

RFC description

Maps MAC addresses learned on ATM line cards to their corresponding Virtual Path/Channel Identifiers (VPI/VCI).

Start monitoring Riverstone Networks RS-series ATM switch/routers (MAC-to-PVC forwarding database) 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 RIVERSTONE-ATM-MIB