CISCO-CAT6K-CROSSBAR-MIB

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCISCO-CAT6K-CROSSBAR-MIB

Organization: Cisco Systems, Inc.

Last Updated: 2013-09-16

Category: Cisco Devices, Hardware and Environment

Description: Monitors crossbar switching fabric utilization and error statistics on Cisco Catalyst 6000/6500 switches.

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What Is CISCO-CAT6K-CROSSBAR-MIB?

CISCO-CAT6K-CROSSBAR-MIB provides management for the crossbar switching fabric module in Cisco Catalyst 6000/6500 series switches, a hardware component responsible for high-speed internal packet switching between line cards. It exposes configuration objects for fabric operating modes (bus-only, truncated, DCEF-only), fallback behavior, minimum fabric card presence, and even a front-panel LCD banner table. Its monitoring value is squarely hardware status: administrators check whether the crossbar fabric is operating in its intended high-performance mode or has fallen back to a degraded bus-only mode, which directly affects switch throughput and indicates a fabric card health issue. It depends on the chassis being a Catalyst 6000/6500 with a supervisor and fabric module, and typically correlates with CISCO-ENTITY-VINE-MIB or ENTITY-MIB for physical module identification. It is deployed on Catalyst 6500 switches used as core/distribution switches where fabric-mode health directly impacts switching capacity. Engineers can download the CISCO-CAT6K-CROSSBAR-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-CAT6K-CROSSBAR-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

  • Cisco Catalyst 6000/6500 series switch

Monitoring Examples

An operator would poll cc6kxbarFallbackMode to see if the switch has fallen back from its configured mode, cross-checking cc6kxbarMinFabricPresent and cc6kxbarTruncatedModeOper to determine whether truncated mode is actually active versus merely allowed. A cc6kxbarFallbackMode value of 'busOnly' when cc6kxbarBusOnlyModeAllowed was not the intended operating mode would signal a fabric module failure or insufficient fabric cards installed, degrading the switch to classic bus-based forwarding.

What Can Be Monitored

  • crossbar fabric operating mode
  • fabric fallback status
  • minimum fabric module presence
  • truncated/DCEF-only mode operational state
  • LCD banner display configuration
Imported Objects

From CISCO-QOS-PIB-MIB

Percent

From CISCO-SMI

ciscoMgmtOBJECT-IDENTITY

From ENTITY-MIB

entPhysicalDescrOBJECT-TYPE
entPhysicalIndexOBJECT-TYPE
entPhysicalNameOBJECT-TYPE
entPhysicalVendorTypeOBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DateAndTime
DisplayString
TEXTUAL-CONVENTION
TimeStamp
TruthValue

How to Use in IPNetwork Monitor

Example using cc6kxbarTMSwBusUtilLogCount OID:

Select a Cisco Catalyst 6000/6500 series switch 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 cc6kxbarTMSwBusUtilLogCount into the Find box to locate it in the OID tree, then select it and click OK. The number of times the switching bus traffic utilization has risen above (or kept staying above) its configured threshold. 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

Provides instrumentation for Catalyst 6000 crossbar switching fabric configuration and operation including bus utilization and performance monitoring.

Start monitoring Cisco Catalyst 6000/6500 series switch 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 CISCO-CAT6K-CROSSBAR-MIB