CISCO-LRE-CPE-MIB

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Organization: Cisco Systems, Inc.

Last Updated: 2003-03-12

Category: Cisco Devices, DSL and Broadband

Description: Manages Long Reach Ethernet (LRE) CPE device configuration, line status, and performance statistics.

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What Is CISCO-LRE-CPE-MIB?

CISCO-LRE-CPE-MIB manages Cisco Long Reach Ethernet (LRE) Customer Premise Equipment -- DSL/VDSL-based devices that deliver Ethernet service over extended copper runs. It exposes a bridging forwarding-database table (an LRE-specific analog of the standard Bridge-MIB's FDB) and a per-port configuration/status table covering admin status, speed, duplex, and port-protection settings alongside operational protection state. This lets administrators monitor both connectivity (which MAC addresses are learned on which port) and interface configuration health, flagging ports that are administratively down, mismatched in speed/duplex, or unexpectedly (un)protected. It parallels and depends conceptually on the standard Bridge-MIB (dot1dTp) forwarding-database model. It is deployed on Cisco LRE CPE units at customer premises as part of an LRE/VDSL access network. Network engineers evaluating or troubleshooting this functionality can download the CISCO-LRE-CPE-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-LRE-CPE-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 Long Reach Ethernet (LRE) CPE devices

Monitoring Examples

Polling clreCpePortTable/clreCpePortEntry lets an admin verify clreCpePortAdminStatus, clreCpePortAdminSpeed, and clreCpePortAdminDuplex match the expected configuration for each CPE Ethernet port, and compare clreCpePortAdminProtected against clreCpePortOperProtected to catch a port-protection setting that failed to apply. clreCpeDot1dTpFdbTable/clreCpeDot1dTpFdbEntry, keyed by clreCpeDot1dBasePortIfIndex, shows which MAC addresses are currently learned on each bridge port, useful for diagnosing connectivity issues on the LRE link.

What Can Be Monitored

port admin status
port speed and duplex configuration
port protection state (admin vs operational)
bridge forwarding database entries per port

Imported Objects

From BRIDGE-MIB

dot1dTpFdbAddress

From CISCO-SMI

ciscoMgmt

OBJECT-IDENTITY

From IF-MIB

InterfaceIndex
ifIndex	OBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
ciscoLreCpeMIB	1.3.6.1.4.1.9.9.340			The MIB module for the Cisco Long Reach Ethernet Customer Premise Equipment device information. * ABBREVIATIONS, ACRONYMS, AND SYMBOLS * CPE - Customer Premise Equipment DSL - Digital Subscriber Loop VDSL - Very High Speed DSL LRE - Long Reach Ethernet
clreCpeMIBNotifications	1.3.6.1.4.1.9.9.340.0
clreCpeMIBNotificationsPrefix	1.3.6.1.4.1.9.9.340.0.0
ciscoLreCpeMIBObjects	1.3.6.1.4.1.9.9.340.1
clreCpeDot1dTp	1.3.6.1.4.1.9.9.340.1.1
clreCpeDot1dTpFdbTable	1.3.6.1.4.1.9.9.340.1.1.1		not-accessible	A table that supplements the information from the BRIDGE-MIB. The BRIDGE-MIB tracks the MAC address to switch interface mapping in the dot1dTpFdbTable. On the long reach ethernet switch, CPE devices connect to the switch interfaces. Each CPE device has one or more ports. This table maps a MAC address on the switch to an interface associated with a CPE port.
clreCpeDot1dTpFdbEntry	1.3.6.1.4.1.9.9.340.1.1.1.1		not-accessible	An entry that supplements the information in the dot1dTpFdbTable table from the BRIDGE-MIB.
NUM clreCpeDot1dBasePortIfIndex	1.3.6.1.4.1.9.9.340.1.1.1.1.1	InterfaceIndex	read-only	The value of the instance of the ifIndex object, define in MIB-II, for the interface corresponding to this CPE port. The Forwarding database on the switch tracks a MAC address and its associated switch interface in the dot1dTpFdbTable table. This object adds information about which port on the CPE the MAC address was learnt on.
clreCpePort	1.3.6.1.4.1.9.9.340.1.2
clreCpePortTable	1.3.6.1.4.1.9.9.340.1.2.1		not-accessible	A list of LRE CPE port entries. The number of entries is determined by the number of Long Reach Ethernet interfaces (to which the CPE attaches) on the switch and the number of Fast Ethernet ports each CPE supports.
clreCpePortEntry	1.3.6.1.4.1.9.9.340.1.2.1.1		not-accessible	Entry containing information for a particular CPE Fast Ethernet port. The entries are created as new CPE devices are discovered. A new CPE device is discovered when the LRE link between that CPE device and the LRE switch becomes operational. These entries are only valid for ifIndexes of ifType ethernetCsmacd(6).
INT clreCpePortAdminStatus	1.3.6.1.4.1.9.9.340.1.2.1.1.1	INTEGER	read-write	The desired state of the CPE port. The testing(3) state indicates that no operational packets can be passed. When a managed system initializes, all CPE ports start with clreCpePortAdminStatus in the down(2) state. As a result of either explicit management action or per configuration information retained by the managed system, clreCpePortAdminStatus is then changed to either the up(1) or testing(3) states (or remains in the down(2) state).
INT clreCpePortAdminSpeed	1.3.6.1.4.1.9.9.340.1.2.1.1.2	INTEGER	read-write	This object controls the speed of this CPE Fast Ethernet port. When set to autoDetect(1), the CPE port negotiates with its peer for the optimum speed, either s10000000(10000000) or s100000000(100000000). If the peer does not support the autoDetect(1) capability, the CPE port speed defaults to s10000000(10000000).
INT clreCpePortAdminDuplex	1.3.6.1.4.1.9.9.340.1.2.1.1.3	INTEGER	read-write	This object controls the duplex of this CPE Fast Ethernet port. When set to autoDetect(1), the CPE port negotiates with its peer for the optimum duplex setting, either fullDuplex(2) or halfDuplex(3). If the peer does not support the autoDetect(1) capability, this CPE port's duplex defaults to halfDuplex(3).
T/F clreCpePortAdminProtected	1.3.6.1.4.1.9.9.340.1.2.1.1.4	TruthValue	read-write	This object configures a CPE Fast Ethernet port as a protected port when its value is set to true. Data traffic is disallowed between two CPE ports configured as protected ports. When the value of this object is set to false, the protected port property of this CPE port is removed. The value of this object can be set to true only on those CPE ports that support the protected port function.Note that the value of this object represents the desired state of the port. The actual state of the port may have a different value.
T/F clreCpePortOperProtected	1.3.6.1.4.1.9.9.340.1.2.1.1.5	TruthValue	read-only	The value represented by this object is the actual protected port state of the CPE port. The object value is true when this CPE port is configured as a protected port. Data packets are not forwarded between two CPE ports configured as protected ports.
clreCpeMIBConformance	1.3.6.1.4.1.9.9.340.2
clreCpeMIBCompliances	1.3.6.1.4.1.9.9.340.2.1
clreCpeMIBCompliance	1.3.6.1.4.1.9.9.340.2.1.1			The compliance statement for switches supporting the LRE CPE devices.
clreCpeMIBGroups	1.3.6.1.4.1.9.9.340.2.2
clreCpeDot1dTpGroup	1.3.6.1.4.1.9.9.340.2.2.1			The collection of MIB objects used to monitor the transparent learning bridge on the LRE CPE.
clreCpePortGroup	1.3.6.1.4.1.9.9.340.2.2.2			The collection of MIB objects used to manage and monitor LRE CPE Fast Ethernet ports.

RFC description

Cisco vendor-private MIB for Long-Range Ethernet (LRE) Customer Premises Equipment (CPE) management.

Start monitoring Cisco Long Reach Ethernet (LRE) CPE devices (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-LRE-CPE-MIB

What Is CISCO-LRE-CPE-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description