CISCO-BCP-MIB

All MIBs › CISCO-BCP-MIB

Organization: Cisco Systems, Inc.

Last Updated: 2004-08-31

Category: Cisco Devices, VLAN and Bridging

Description: Manages Bridging Control Protocol (BCP) for bridging over PPP links on Cisco routers.

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-BCP-MIB?

This Cisco MIB implements management objects for the Bridge Control Protocol (BCP, per RFC 2878, influenced by RFC 1474), which bridges Ethernet frames over PPP links on Cisco routers and access servers. It exposes configuration objects for BCP-enabled interfaces alongside a parallel operational table reporting current negotiated status. It is useful for monitoring the software/protocol health of a WAN interface: bcpOperStatus reveals whether BCP negotiation on a given PPP link succeeded, is in progress, or has failed, letting an operator quickly identify a bridging outage. It depends on RFC 2878/1474 conventions and works alongside the interface's underlying PPP and IF-MIB status objects for the link itself. It is typically deployed on Cisco routers or access servers using PPP WAN links (dial-up, leased line) where transparent LAN bridging is required across the WAN, and administrators can download the CISCO-BCP-MIB file to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-BCP-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 router with PPP WAN interfaces
Cisco access server

Monitoring Examples

Polling bcpOperTable's bcpOperStatus for a given ifIndex reveals whether BCP negotiation on that PPP interface is currently up, down, or in a specific negotiating state. Comparing bcpConfigTable's bcpConfigEntry settings against the corresponding bcpOperEntry values lets an operator spot a mismatch between configured and negotiated bridging parameters, which would explain a bridging failure on that WAN link.

What Can Be Monitored

BCP operational status per interface
BCP configuration parameters per interface
bridging-over-PPP negotiation state

Imported Objects

From CISCO-SMI

ciscoMgmt

OBJECT-IDENTITY

From IF-MIB

ifIndex

OBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString

How to Use in IPNetwork Monitor

Example using bcpOperStatus OID:

Select a Cisco router/access server with PPP WAN interface 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 bcpOperStatus 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. The operational status of the Bridge Control Protocol. 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 an INTEGER-type OID, Value bounds is the most useful condition here — trigger an alert if the value is anything other than 'open', since that indicates the condition this object reports has changed to one worth investigating. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
ciscoBcpMIB	1.3.6.1.4.1.9.9.275			This MIB module describes the Managed Objects for of Bridge Control Protocol (RFC2878). This MIB is influenced by RFC1474.
ciscoBcpMIBObjects	1.3.6.1.4.1.9.9.275.1
bcpOperTable	1.3.6.1.4.1.9.9.275.1.1		not-accessible	Table containing the status of the local BCP entity that is related to the operation of Bridging Control Protocol.
bcpOperEntry	1.3.6.1.4.1.9.9.275.1.1.1		not-accessible	Operational status information for a particular BCP link. For all entries in ifTable with ifType ppp(23), there will be an entry in this table.
INT bcpOperStatusEx	1.3.6.1.4.1.9.9.275.1.1.1.1	INTEGER	read-only	The operational status of the Bridge Control Protocol. The possible values are : open(1) - the BCP link is up and both ends are configured in the compatible manner. closed(2) - the BCP link is down and neither ends are configured. listening(3) - the local BCP entity is configured and the remote end is not configured compatibly.
bcpConfigTable	1.3.6.1.4.1.9.9.275.1.2		not-accessible	Table containing the configuration information for the local BCP entity that is related to the operation of Bridging over the PPP link.
bcpConfigEntry	1.3.6.1.4.1.9.9.275.1.2.1		not-accessible	Bridging Configuration information for a particular BCP link. For all entries in ifTable with ifType ppp(23), there will be an entry in this table.
INT bcpConfigBridgeIdControl	1.3.6.1.4.1.9.9.275.1.2.1.1	INTEGER	read-write	The Bridge-Identification configuration option is designed for use when the line is an interface between half bridges connecting virtual or physical LAN segments. When enabled the local BCP entity initiates a Bridge Identification Option negotiation.
U32 bcpConfigBridgeId	1.3.6.1.4.1.9.9.275.1.2.1.2	Unsigned32	read-write	The bridge number of the local BCP entity. This value is meaningful only when the local BCP entity has negotiated the BridgeId Configuration option, which means the value of bcpConfigBridgeIdControl is enabled(1). The two half bridges must agree on the bridge number.
INT bcpConfigLineIdControl	1.3.6.1.4.1.9.9.275.1.2.1.3	INTEGER	read-write	The Line-Identification configuration option is designed for use when the line is assigned a LAN segment number. When enabled the local BCP entity initiates a Line Identification Option negotiation.
U32 bcpConfigLineId	1.3.6.1.4.1.9.9.275.1.2.1.4	Unsigned32	read-write	The LAN segment number of the local BCP entity. This value is meaningful only when the local BCP entity negotiated the LineId Configuration option, which means the value of bcpConfigLineIdControl is enabled(1). The two half bridges must agree on the LAN segment number.
INT bcpConfigMacSupport	1.3.6.1.4.1.9.9.275.1.2.1.5	INTEGER	read-write	The Mac-Support configuration option is provided to permit implementations to indicate the sort of traffic they are prepared to receive. When enabled the local BCP entity initiates a Mac-Support Option negotiation.
INT bcpConfigMacType	1.3.6.1.4.1.9.9.275.1.2.1.6	INTEGER	read-write	The MAC type that this local BCP entity is prepared to receive and service. This value is meaningful only when the local BCP entity has negotiated the MAC-Support Configuration option, which means the value of bcpConfigMacSupport is enabled(1). These values definition are specified in the most recent RFC1700.
INT bcpConfigTinygram	1.3.6.1.4.1.9.9.275.1.2.1.7	INTEGER	read-write	The Tinygram-Compression configuration option permits implementations to indicate support for Tinygram Compression. When enabled the local BCP Entity initiates a Tinygram-Compression Option negotiation.
INT bcpConfigMacAddressControl	1.3.6.1.4.1.9.9.275.1.2.1.8	INTEGER	read-write	The Mac-Address configuration option enables the implementations to announce its MAC address or have one assigned. When enabled the local BCP Entity initiates a Mac-Address Option negotiation.
STR bcpConfigMacAddress	1.3.6.1.4.1.9.9.275.1.2.1.9	DisplayString	read-write	This value is meaningful only when the local BCP entity has negotiated the MAC-Address configuration option, which means the value of bcpConfigMacAddressControl is enabled(1). If it is non-zero format, the local BCP get its MAC address announced. It is represented in IEEE 802.1 Canonical format. If it is in zero format, i.e. 00-00-00-00-00-00 then the implementation of the system wishes to have a MAC address assigned.
INT bcpConfigSpanTreeControl	1.3.6.1.4.1.9.9.275.1.2.1.10	INTEGER	read-write	The Spanning-Tree-Protocol configuration option enables a bridge to remain compatible with older implementations of BCP. When enabled the local BCP Entity initiates a Spanning-Tree-Protocol Option negotiation.
INT bcpConfigSpanTree	1.3.6.1.4.1.9.9.275.1.2.1.11	INTEGER	read-write	The desired spanning tree protocol of the local BCP entity. The listing values of the Spanning- Tree Protocol are specified in the most recent RFC1700. This value is meaningful only when the local BCP entity has negotiated the Spanning-Tree-Protocol configuration option, which means the value of bcpConfigSpanTreeControl is enabled(1).
INT bcpConfigIeee802dot1qTagged	1.3.6.1.4.1.9.9.275.1.2.1.12	INTEGER	read-write	The IEEE-802-Tagged-Frame configuration option permits the implementation to support for IEEE 802.1q Tagged Frame. When enabled the local BCP Entity initiates a IEEE-802-Tagged-Frame Option negotiation.
INT bcpConfigMgmtInline	1.3.6.1.4.1.9.9.275.1.2.1.13	INTEGER	read-write	The Management-Inline configuration option indicates that the system is willing to receive any IEEE-defined inter-bridge protocols. When enabled if the local BCP Entity initiates a Management-Inline Option negotiation.
INT bcpConfigBCPacketIndicator	1.3.6.1.4.1.9.9.275.1.2.1.14	INTEGER	read-write	The Bridge Control Packet Indicator configuration option permits the implementation to indicate support for Bridge Control Packet Indicator. When enabled the local BCP Entity initiates a Bridge Control Packet Indicator Option negotiation.
cBcpMIBConformance	1.3.6.1.4.1.9.9.275.3
cBcpMIBCompliances	1.3.6.1.4.1.9.9.275.3.1
cBcpMIBCompliance	1.3.6.1.4.1.9.9.275.3.1.1			The compliance statement for entities which implement this Cisco BCP MIB.
cBcpMIBGroups	1.3.6.1.4.1.9.9.275.3.2
cBcpMIBGroup	1.3.6.1.4.1.9.9.275.3.2.1			A collection of objects providing the configuration and operating status of the BCP entity.

RFC description

Describes managed objects for Bridge Control Protocol (RFC 2878) on PPP interfaces.

Start monitoring Cisco router/access server with PPP WAN interfaces 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-BCP-MIB