CISCO-REPEATER-MIB

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › CISCO-REPEATER-MIB

Organization: Cisco Systems, Inc.

Last Updated: 1995-12-05

Category: Cisco Devices, Network Interfaces

Description: Manages Ethernet repeater and hub port configuration and collision statistics on Cisco hub products.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock status) 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.

What Is CISCO-REPEATER-MIB?

CISCO-REPEATER-MIB manages Ethernet repeater and hub devices, a Cisco extension in the legacy Ethernet hub/repeater management family that predates modern switching. It exposes per-port physical layer data including MDI/MDI-X status, link integrity test results, auto-polarity correction, and source-address security controls. Its monitoring value is squarely in hardware and link-layer health: administrators use it to check whether a repeater port's link test has failed, whether cable polarity had to be auto-corrected (indicating a wiring issue), and whether unauthorized source MAC addresses have triggered a security violation trap. It complements the standard IETF Repeater/Hub MIBs (RFC 1516/2108) with Cisco-specific port diagnostics. This MIB is typically deployed in legacy 10/100 Mbps Ethernet hub deployments from Cisco's SMB/workgroup hub product lines, technology now largely retired in favor of switched Ethernet, though a CISCO-REPEATER-MIB download is still available for managing surviving legacy installations.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-REPEATER-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 Ethernet hubs/repeaters

Monitoring Examples

An operator would poll ciscoRptrPortTable/ciscoRptrPortEntry to check ciscoRptrPortLinkTestFailed and ciscoRptrPortMDIStatus per port, revealing a bad cable or disconnected link on a specific hub port. Reading ciscoRptrPortAutoPolarityCorrected shows whether the hub had to fix reversed transmit/receive polarity automatically, while ciscoRptrPortLastIllegalSrcAddr combined with ciscoRptrPortIllegalAddrTrapAcked flags unauthorized devices attempting to use a port protected by ciscoRptrPortSrcAddrCtrl.

What Can Be Monitored

  • per-port link test failure status
  • MDI/MDI-X cable status
  • auto-polarity correction events
  • illegal source address violations
  • port security/address control state
Imported Objects

From CISCO-SMI

ciscoMgmtOBJECT-IDENTITY

From SNMP-REPEATER-MIB

rptrPortEntryOBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

From SNMPv2-TC

TimeStamp
TruthValue

How to Use in IPNetwork Monitor

Example using ciscoRptrPortIllegalAddrTotalCount OID:

Select a Cisco Ethernet hubs/repeater (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 ciscoRptrPortIllegalAddrTotalCount 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. This is the total count of all cccurences of any illegal source addresses heard on the port since start-up. 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

Manages Cisco repeater port statistics, configuration, and MAC security features for network hubs.

Start monitoring Cisco Ethernet hubs/repeaters (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 CISCO-REPEATER-MIB