CISCOSB-rlInterfaces

MIB Reference — IPNetwork Monitor · Updated September 09, 2026

All MIBsCISCOSB-rlInterfaces

Organization: Cisco Small Business

Last Updated: 2013-04-01

Category: Vendor: Cisco

Description: Provides extended interface management and configuration objects for Cisco Small Business devices.

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What Is CISCOSB-rlInterfaces?

CISCOSB-rlInterfaces is a Cisco Small Business private MIB that extends the standard interfaces model with switch-specific Layer 2 port attributes not covered by IF-MIB. It exposes a table of extended interface properties including physical address type, administrative and operational duplex mode, back-pressure mode, VLAN tagging mode, transceiver type, and port lock (security) admin/operational status. Its monitoring value covers interface hardware/configuration status—confirming a port's negotiated duplex, transceiver type (e.g. SFP present), and lock status, which helps diagnose cabling/negotiation issues or unauthorized port access attempts. It is a direct vendor extension to the standard IF-MIB (ifTable/ifEntry), correlated by interface index. It is deployed on Cisco Small Business switches for detailed per-port hardware and link-layer status beyond what generic interface MIBs provide, typically inspected through a CISCOSB-rlInterfaces MIB Browser session against the switch's agent.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCOSB-rlInterfaces. 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 Small Business switch

Monitoring Examples

An administrator would poll swIfTable/swIfEntry (indexed by swIfIndex) and compare swIfDuplexAdminMode against swIfDuplexOperMode to detect a duplex mismatch that could be causing packet loss or a saturated link. Checking swIfTransceiverType reveals whether an expected SFP module is actually inserted and recognized, and a discrepancy between swIfLockAdminStatus and swIfLockOperStatus would indicate a port security lock failed to apply, exposing the port to unauthorized connections.

What Can Be Monitored

  • per-port duplex admin/operational mode
  • transceiver type
  • port lock (security) status
  • VLAN tagging mode
  • back-pressure mode
  • physical address type
Imported Objects

From CISCOSB-MIB

rlIfInterfacesOBJECT-IDENTITY
switch001MODULE-IDENTITY

From IF-MIB

InterfaceIndex
InterfaceIndexOrZero
ifIndexOBJECT-TYPE

From Q-BRIDGE-MIB

PortList

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString
RowStatus
TEXTUAL-CONVENTION
TruthValue
OIDs

RFC description

Configures switch port parameters on Cisco Small Business devices including speed, duplex, auto-negotiation, and flow control settings.

Start monitoring Cisco Small Business 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 CISCOSB-rlInterfaces