BAS-OSPF-MIB

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsBAS-OSPF-MIB

Organization: Broadband Access Systems

Last Updated: 1998-10-07

Category: DOCSIS and Cable, Routing Protocols

Description: Manages OSPF routing protocol configuration and link-state database on BAS broadband access platforms.

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What Is BAS-OSPF-MIB?

BAS-OSPF-MIB manages OSPF (Open Shortest Path First) routing protocol configuration and link-state database information on Broadband Access System IP forwarding platforms. Its data spans routing configuration (the general OSPF group table) and route/statistics groupings broken out by route class -- intra-area, inter-area, and external type-1/type-2 routes. From a monitoring perspective it is used to track the health and stability of a device's OSPF routing process, since counts and states in basOspfIntraArea, basOspfInterArea, basOspfExternalType1, and basOspfExternalType2 reveal whether route counts in each category are stable or fluctuating, with route churn often signaling adjacency flaps or an unstable upstream neighbor. As a vendor extension to standard OSPF management, it is closely tied to the IETF OSPF-MIB (RFC 1850/4750) conventions for terminology and route classification even though it is a BAS-specific implementation. It is deployed on Broadband Access System routers/edge platforms used by broadband/cable operators for IP aggregation and routing. Engineers can download the BAS-OSPF-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in BAS-OSPF-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

  • Broadband Access System (BAS) routers and IP aggregation platforms

Monitoring Examples

An operator would poll basOspfGeneralGroupTable/basOspfGeneralGroupEntry for overall OSPF process configuration and status, then check the basOspfRouteGroup counters split across basOspfIntraArea, basOspfInterArea, basOspfExternalType1, and basOspfExternalType2 to see how many routes of each class are currently installed. A sudden drop in basOspfIntraArea route counts would suggest an area adjacency has gone down, while spikes in basOspfExternalType2 could indicate route redistribution instability from an external protocol. This data would typically be trended over time to catch OSPF flapping before it causes a routing outage.

What Can Be Monitored

  • OSPF general process status
  • intra-area route count
  • inter-area route count
  • external type-1 route count
  • external type-2 route count
Imported Objects

From BAS-MIB

BasChassisId
BasInterfaceId
BasLogicalPortId
BasSlotId
basAliasOspfOBJECT-IDENTITY

From SNMPv2-SMI

Counter32
Gauge32
Integer32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

RowStatus
TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using basOspfOriginateNewLsas OID:

Select a Broadband Access Systems (BAS) CMT (legacy) 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 basOspfOriginateNewLsas into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. The number of new link-state advertisements that have been originated. 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 Counter32-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

RFC description

A Broadband Access System (BAS) proprietary extension to the standard OSPF MIB (RFC 4750), providing vendor-specific SNMP objects for monitoring Open Shortest Path First routing protocol on BAS platform devices.

Start monitoring Broadband Access Systems (BAS) CMTS (legacy) 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 BAS-OSPF-MIB