CT-ELS10-27-MIB

MIB Reference — IPNetwork Monitor · Updated September 09, 2026

All MIBsCT-ELS10-27-MIB

Category: VLAN and Bridging, Vendor: Cabletron/Enterasys

Description: Manages Cabletron ELS10-27 entry-level switch port configuration, forwarding, and VLAN assignments.

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What Is CT-ELS10-27-MIB?

CT-ELS10-27-MIB is a Cabletron Systems proprietary MIB for the ELS10-27, an entry-level Ethernet workgroup switch, defining per-port bridging/protocol and VLAN configuration data. It exposes protocol-related settings such as bridging mode, BPDU suppression, RIP listening, and trunking status per interface, along with VLAN membership and trunk table configuration. While primarily a configuration MIB, it supports monitoring of switch software/protocol status, confirming that spanning-tree BPDU handling, trunking negotiation, and VLAN assignments are correctly applied on each port to detect misconfigurations that would show up as connectivity or loop faults. It is layered on standard bridge MIB conventions and Cabletron's common IMPORTS structure, tying its per-port table indices to standard ifIndex values. It was deployed in small/entry-level enterprise wiring closets where Cabletron ELS10-27 switches provided basic Layer 2 switching with VLAN and trunk support. Engineers can download the CT-ELS10-27-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CT-ELS10-27-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

  • Cabletron ELS10-27 entry-level Ethernet switch

Monitoring Examples

An administrator polling els10-27protoTable (indexed by els10-27protoIfIndex) can check els10-27protoBridge, els10-27protoSuppressBpdu, and els10-27protoTrunking to confirm a given port's spanning-tree and trunking behavior matches its intended role as an access or trunk port. Checking els10-27trunkTable entries by els10-27trunkIfIndex reveals which ports are configured as trunks, letting an operator spot an unexpected trunk port that could indicate a rogue switch link. Monitoring els10-27VlanConfigVlan values across ports helps catch VLAN misassignment that would isolate a device from its intended broadcast domain.

What Can Be Monitored

  • port bridging mode
  • BPDU suppression status
  • RIP listening status
  • port trunking configuration
  • VLAN assignment per port
Imported Objects

From BRIDGE-MIB

dot1dStpDesignatedRootOBJECT-TYPE
dot1dStpForwardDelayOBJECT-TYPE
dot1dStpHelloTimeOBJECT-TYPE
dot1dStpMaxAgeOBJECT-TYPE
dot1dStpPortDesignatedBridge
dot1dStpPortDesignatedCost
dot1dStpPortDesignatedPort
dot1dStpPortDesignatedRoot
dot1dStpPortState
dot1dStpRootCostOBJECT-TYPE
dot1dStpRootPortOBJECT-TYPE

From RFC-1212

OBJECT-TYPE

From RFC-1215

TRAP-TYPE

From RFC1155-SMI

Counter
Gauge
IpAddress
TimeTicks
enterprises

From RFC1213-MIB

DisplayString
ifInErrors
ifOutDiscards
ifOutErrors
sysObjectID

From SNMPv2-TC

PhysAddress
OIDs

RFC description

Vendor-specific management MIB for Comtech ELS10-27 telecommunications equipment; manages device configuration, status monitoring, and performance metrics for the ELS10-27 platform.

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Download CT-ELS10-27-MIB