Cisco AXSM SNMP Reference, Release 2
Cisco WAN ATM Connection MIB Objects
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Cisco WAN ATM Connection MIB File

Table Of Contents

Cisco WAN ATM Connection MIB File

SPVC Provisioning Model

Cisco WAN ATM Connection Textual Conventions

Channel Configuration Group

Channel State Group

Channel Test Group

Cisco WAN ATM Connection Conformance Information

Cisco WAN ATM Connection Units of Conformance


Cisco WAN ATM Connection MIB File


This chapter describes the Cisco WAN ATM Connection MIB objects, which reside in the CISCO-WAN-ATM-CONN-MIB.my file.

Contents of this chapter include:

SPVC Provisioning Model

Cisco WAN ATM Connection Textual Conventions

Channel Configuration Group

Channel State Group

Channel Test Group

Cisco WAN ATM Connection Conformance Information

SPVC Provisioning Model

To use this MIB module, it is essential to understand the provisioning model employed in the
MGX 8800 Series products. This provisioning model is designed for the multiple types of services such as Frame Relay, circuit emulation, voice, and so forth.

The connection termination points are termed endpoints. These endpoints derive their characteristics from the type of service they handle. Thus, Frame Relay endpoints are characterized by a Frame Relay identifier (DLCI) and the committed frame rate. The endpoints can also terminate an ATM interface.

The connection between these endpoints is a ATM Switched Virtual Circuit (SVC). The routing of a connection within an ATM network is handled by a network controller, for example, Private Network-to-Network Interface (PNNI).

From a user perspective, the endpoint is identified by either physical entities, for example, node name, shelf, slot, or physical line, or logical entities, such as a DLCI in a Frame Relay module, a T1 slot number in a voice module, or a VPI/VCI in an ATM module.

We term the above identifiers as user addresses. There is yet another set of addresses that defines the endpoints within an ATM network. This is the address of the endpoint, as known to the network controller and hence termed network address. The network address is assigned by the switch when a user provisions an endpoint. The network address is mandatory for routing a connection. The network address in this ATM network is a combination of an Network Service Access Point (NSAP) address (a 20 octet number uniquely identifying a logical interface) and a VPI/VCI within this interface.

In a switched network, there is always a calling and a called party. Likewise in the ATM network, one endpoint is responsible for setting up the connection (making a call). This endpoint is termed the master endpoint, the other one being the slave. To route a call from the master to slave, the master endpoint needs to know the network address of the slave endpoint. And this information needs to be conveyed when provisioning a master endpoint. This imposes a sequence in provisioning a connection.

1. The Network Management System (NMS) adds the slave endpoint. The slave endpoint's user address is specified during the add operation. The switch assigns a network address to this added endpoint.

2. NMS gets the slave's network address from switch.

3. NMS adds the master endpoint. The master's user address is specified, along with the slave's network address.

4. If both the endpoints are added, SPVC provisioning is deemed successful. The routing of the connection takes place only after the master endpoint is added.

Cisco WAN ATM Connection Textual Conventions

The names of the textual conventions are specified in the object syntax.


Note Object identifiers are not applicable.


The textual conventions are listed Table 11-1.

Table 11-1 Cisco WAN ATM Connection Textual Convention MIB Objects 

Name
Description
Syntax
Default Value

CiscoAtmService
Category

Specifies the ATM forum service categories. To be backward compatible with UNI3.1, two Constant Bit Rate (CBR) service types cbr2 and cbr3 are added. ABR Foresight Service type is also supported. Refer to the ATM Forum Traffic Management Specification, Version 4.0, Section 4.5.4.

Status: current

INTEGER {cbr1(1), vbr1RT(2), vbr2RT(3), vbr3RT(4), vbr1nRT(5), vbr2nRT(6), vbr3nRT(7), ubr1(8), ubr2(9), abr(10), cbr2(11), cbr3(12)}

none

CiscoWanLpbk
Types

Defines the following loopback configurations for a connection:

noLoopback (no loopback or clear configured loopback)

destructive (loopback all cells, causing data disruption)

nonDestructive (loopback performed using OAM loopback cells, does not disrupt regular traffic)

Status: current

INTEGER {noLpbk(1), destructive(2), nonDestructive(3)}

none

CiscoWanLpbk
Dir

Defines the direction where the loop is effected.

The loops include:

External—Loop port traffic back to port. This is applicable only for destructive mode.

Internal—Loop switches egress traffic back to switch. This is applicable only for destructive mode.

Forward—Inject Operation, Administration, and Maintenance (OAM) loopback cells towards the switching fabric (ingress). This is applicable only for non-destructive mode.

Reverse—Inject OAM loopback cells towards the port (egress). This is applicable only for non-destructive mode.

Status: current

INTEGER {external(1), internal(2), forward(3), reverse(4)}

none

CiscoWanTest
Status

Defines the loopback test status at an endpoint.

Status: current

INTEGER {noStatus (1), lpbkInProgress(2), lpbkSuccess(3), lpbkAbort(4), lpbkTimeOut(5), lpbkInEffect(6)}

none

CiscoWanOper
Status

Defines the operational status of an endpoint.

Status: current

INTEGER {operOk(1), operFail(2), adminDown(3)}

none

CiscoWanNsap
AtmAddress

Determines the ATM address used by the networking entity. The only address type presently supported is NSAP (20 octets).

Status: current

OCTET STRING (SIZE(20))

none

CiscoWanAlarmState

Defines the following alarms at an endpoint that include:

aisRdi—Endpoint receiving AIS or RDI cells in either ingress or egress direction.

Conditioned—Networking entity has forced the endpoint out of service. This could be attributed to either routing failure or to a maintenance operation initiated by the networking entity.

interfaceFail—Interface to which this connection belongs has failed.

ccFail—OAM continuity check between the connection and its peer endpoint has detected a failure.

mismatch—Connection exists in the SM database, but not in the network controller database.

Status: current

INTEGER {aisRdi (1), egrAisRdi(2),
conditioned (4), interfaceFail(8), ccFail(16), mismatch (32), ingAbitFail(64)}

none

CiscoWanXmt
State

Defines the following transmit states of an endpoint:

Normal—Endpoint transmitting normal traffic.

SendingAIS—Endpoint inhibits regular traffic. It sends AIS on egress.

SendingRDI—Endpoint inhibits regular traffic It sends AIS on egress.

Status: current

INTEGER {normal(1), sendingAIS(2), sendingRDI(3)}

none

CiscoWanRcv
State

Defines the following receive states of an endpoint that include:

Normal—Endpoint is receiving normal traffic.

ReceivingRDI—Endpoint receiving RDI, in either ingress or egress.

ReceivingAIS—Endpoint receiving AIS, in either ingress or egress.

CcFailure—Endpoint does not receive OAM CC cells.

Status: current

INTEGER {normal(1), receivingRDI(2), receivingAIS(3), ccFailure(4)}

none

CiscoWanERS
Confg

Defines the following configuration for Explicit Rate Stamping (ERS).

None—Disables the ERS on connection.

EnableIngress—Enables ERS in the Ingress direction only.

EnableEgress—Enables ERS in the Engress direction only.

EnableBoth—Enables ERS in both directions.

Status: current

INTEGER {none(1), enableIngress(2), enableEgress(3), enableBoth(4)}

none

CiscoWanVSVDConfg

Defines the Virtual Source/Virtual Destination (VS/VD) configuration applicable to the following endpoints:

vsvdOff—Disables VSVD.

vsvdOn—Enables VSVD.

switchDefault—Uses default settings on switch.

Status: current

INTEGER {vsvdOff(1), vsvdOn(2), switchDefault(3)}

none

CiscoWanAisIW

Defines an SPVC for the following endpoints for the AIS capability:

e2eAisCapable—Endpoint capable of detecting and generating e2eAIS.

segAisCapable—Endpoint capable of detecting and generating segAIS.

Status: current

INTEGER {e2eAisCapable(1), segAisCapable(2)}

none

AbrRateFactors

Defines the rate factors to be used in increasing or decreasing the ABR cell rate.

Status: current

INTEGER {oneOver32768(1), oneOver16384(2), oneOver8192(3), oneOver4096(4), oneOver2048(5), oneOver1024(6), oneOver512(7), oneOver256(8), oneOver128(9), oneOver64(10), oneOver32(11), oneOver16(12), oneOver8(13), oneOver4(14), oneOver2(15), one(16)}

none


Channel Configuration Group

The Channel Configuration Group contains all objects required for configuring a SPVC on a ATM Capable Service Module.

The object identifiers are listed in Table 11-2.

Table 11-2 Channel Configuration Group Object Identifiers 

Name
Object Identifier

cwAtmChanCnfgTable

::= {cwAtmChanCnfg 1}

cwAtmChanCnfgEntry

::= {cwAtmChanCnfgTable 1}

cwaChanVpi

::= {cwAtmChanCnfgEntry 1}

cwaChanVci

::= {cwAtmChanCnfgEntry 2}

cwaChanServiceCategory

::= {cwAtmChanCnfgEntry 3}

cwaChanVpcFlag

::= {cwAtmChanCnfgEntry 4}

cwaChanIdentifier

::= {cwAtmChanCnfgEntry 5}

cwaChanUploadCounter

::= {cwAtmChanCnfgEntry 6}

cwaChanStatsEnable

::= {cwAtmChanCnfgEntry 7}

cwaChanCCEnable

::= {cwAtmChanCnfgEntry 8}

cwaChanLocalVpi

::= {cwAtmChanCnfgEntry 9}

cwaChanLocalVci

::= {cwAtmChanCnfgEntry 10}

cwaChanLocalNSAPAddr

::= {cwAtmChanCnfgEntry 11}

cwaChanRemoteVpi

::= {cwAtmChanCnfgEntry 12}

cwaChanRemoteVci

::= {cwAtmChanCnfgEntry 13}

cwaChanRemoteNSAPAddr

::= {cwAtmChanCnfgEntry 14}

cwaChanControllerId

::= {cwAtmChanCnfgEntry 15}

cwaChanRoutingMastership

::= {cwAtmChanCnfgEntry 16}

cwaChanMaxCost

::= {cwAtmChanCnfgEntry 17}

cwaChanReroute

::= {cwAtmChanCnfgEntry 18}

cwaChanFrameDiscard

::= {cwAtmChanCnfgEntry 19}

cwaChanOperStatus

::= {cwAtmChanCnfgEntry 20}

cwaChanPCR

::= {cwAtmChanCnfgEntry 21}

cwaChanMCR

::= {cwAtmChanCnfgEntry 22}

cwaChanSCR

::= {cwAtmChanCnfgEntry 23}

cwaChanCDV

::= {cwAtmChanCnfgEntry 24}

cwaChanCTD

::= {cwAtmChanCnfgEntry 25}

cwaChanMBS

::= {cwAtmChanCnfgEntry 26}

cwaChanCDVT

::= {cwAtmChanCnfgEntry 27}

cwaChanPercentUtil

::= {cwAtmChanCnfgEntry 28}

cwaChanRemotePCR

::= {cwAtmChanCnfgEntry 29}

cwaChanRemoteMCR

::= {cwAtmChanCnfgEntry 30}

cwaChanRemoteSCR

::= {cwAtmChanCnfgEntry 31}

cwaChanRemoteCDV

::= {cwAtmChanCnfgEntry 32}

cwaChanRemoteCTD

::= {cwAtmChanCnfgEntry 33}

cwaChanRemoteMBS

::= {cwAtmChanCnfgEntry 34}

cwaChanRemoteCDVT

::= {cwAtmChanCnfgEntry 35}

cwaChanRemotePercentUtil

::= {cwAtmChanCnfgEntry 36}

cwaChanAbrICR

::= {cwAtmChanCnfgEntry 37}

cwaChanAbrADTF

::= {cwAtmChanCnfgEntry 38}

cwaChanAbrRDF

::= {cwAtmChanCnfgEntry 39}

cwaChanAbrRIF

::= {cwAtmChanCnfgEntry 40}

cwaChanAbrNRM

::= {cwAtmChanCnfgEntry 41}

cwaChanAbrTRM

::= {cwAtmChanCnfgEntry 42}

cwaChanAbrCDF

::= {cwAtmChanCnfgEntry 43}

cwaChanAbrFRTT

::= {cwAtmChanCnfgEntry 44}

cwaChanAbrTBE

::= {cwAtmChanCnfgEntry 45}

cwaChanAbrERS

::= {cwAtmChanCnfgEntry 46}

cwaChanAbrVSVDEnable

::= {cwAtmChanCnfgEntry 47}

cwaChanRowStatus

::= {cwAtmChanCnfgEntry 48}

cwaChanIntAbrVSVD

::= {cwAtmChanCnfgEntry 49}

cwaChanExtAbrVSVD

::= {cwAtmChanCnfgEntry 50}

cwaChanAisIWCapability

::= {cwAtmChanCnfgEntry 51}

cwaChanCLR

::= {cwAtmChanCnfgEntry 52}

cwaChanRemoteCLR

::= {cwAtmChanCnfgEntry 53}


The MIB objects are listed in Table 11-3.

Table 11-3 Channel Configuration Group MIB Objects 

Name
Syntax
Description
Default Value

cwAtmChanCnfg
Table

Sequence Of CwAtmChanCnfg
Entry

Contains mandatory endpoint configuration for all SPVC connections. Most of the objects in this table are applicable to all provisioned endpoints for all service categories. The object cwaChanAbrZZZ provides additional configuration information that apply only to ABR endpoints.

Max-Access: not-accessible

Status: current

none

cwAtmChanCnfg
Entry

cwAtmChanCnfg
Entry

Contains an entry in the cwAtmChanCnfgTable. Each entry corresponds to a connection endpoint identified by an interface (ifIndex), Virtual Path Identifier (VPI), and Virtual Channel Identifier (VCI).

Max-Access: not-accessible

Status: current

The indexes include:

ifIndex

cwaChanVpi

cwaChanVci

none

cwaChanVpi

Unsigned32 (0..4095)

Determines the Virtual Path Identifier (VPI) value of a VP or VC connection. The cwaChanVpcFlag indicates if this is a VP/VC connection.

Max-Access: not-accessible

Status: current

none

cwaChanVci

Unsigned32 (0..65535)

The VCI value of VC connection. The cwaChanVpcFlag serves to distinguish if this is a VP/VC connection. For a VPC, the VCI is irrelevant and is set to a value of -2.

Max-Access: not-accessible

Status: current

none

cwaChanService
Category

CiscoAtmService
Category

Identifies the service type to which this connection belongs. The service type specified is one among the ATM forum service types and implicitly determines the configuration for GCRA.

Max-Access: read-create

Status: current

none

cwaChanVpcFlag

TruthValue

Identifies whether or not there is a VP/VC endpoint. When set to true(1), it indicates a VP endpoint.

Max-Access: read-create

Status: current

none

cwaChanIdentifier

Unsigned32 (0..4294967295)

Represents a RESOURCE at the switch that has been assigned for this connection (identified by cwaChanVpi and cwaChanVci). An example of this resource is the LCN/GLCN used by the switch. Another example is a record number assigned for this connection in a database of records.

When a connection gets deleted, this resource gets released into a free pool. When a new endpoint is added (different cwaChanVpi and cwaChanVci), the switch reassigns this resource.

Thus, all connections in a switch would have a unique cwaChanIdentifier. Since the number of resources in the switch is a lesser subset compared to possible combinations of ifIndex, VPI, and VCI, this number serves as a quick reference index between the switch and the NMS.

This is especially useful during the configuration upload of connections from the switch to the NMS.

Max-Access: read-only

Status: current

none

cwaChanUpload
Counter

Unsigned32 (0..4294967295)

Tracks the number of configuration changes that happen on a cwaChanIdentifier. The upload counter is associated only with the cwaChanIdentifier and not with the connection itself.

This counter is used by the NMS to determine if a connection configuration had been modified and requires an upload. This functionality is conventionally achieved by time stamping using a time-of-day clock. However, in switches where time-of-day clock is not available, a scheme is used.

The upload counter is incremented, when one of the following takes place:

Assignment of connection to a cwaChanIdentifier. This happens when a connection is added and assigned this cwaChanIdentifier.

De-assignment of a connection from a cwaChanIdentifier. This happens when a connection is deleted and the cwaChanIdentifier resource is released.

When there is a configuration change completed to the connection that is associated with this cwaChanIdentifier.

In a new system, a unutilized resource (cwaChanIdentifier) has a counter value of zero. When a connection is added to this cwaChanIdentifier, the counter is incremented, and is further incremented for any of the above operations. When a connection is deleted the value of this counter is incremented and preserved until a new connection gets associated with this cwaChanIdentifier.

Max-Access: read-only

Status: current

none

cwaChanStats
Enable

TruthValue

Limits imposed by software or hardware implementations can restrict the amount of statistical data that can be maintained in a physical entity. For example, a service module. Therefore, there is a need to restrict statistics collection to a smaller subset.

This object serves the purpose of enabling or disabling statistics collection on a per connection basis. In implementations which do not have such limitations, this object is set to true(1) for all connections.

Max-Access: read-create

Status: current

false

cwaChanCCEnable

TruthValue

Enables or disables Continuity Check (CC) on a connection endpoint. When continuity check is enabled on an endpoint, the endpoint anticipates Operation, Administration, and Maintenance (OAM) CC cells from its peer endpoint. OAM CC cells are sent when the peer endpoint does not have traffic cells to send. If the connection is idle and this endpoint has not received OAM CC cells for a period of
3.5 +/- 0.5 seconds, it declares continuity failure.

This object serves to administratively control the CC feature. Typical implementations (of this feature) can choose to ignore this control or impose other conditions to actually enable CC cell flow. However, if this object is set to false(2), this feature is disabled.

Max-Access: read-create

Status: current

false

cwaChanLocalVpi

Unsigned32 (0..4095)

Identifies the internal VPI assigned to a local endpoint by the switch. The cwaChanLocalVpi, cwaChanLocalVci, and the cwaChanLocalNSAPAddr form a unique identifier for the connection endpoint in the networking domain.

Max-Access: read-only

Status: current

none

cwaChanLocalVci

Unsigned32 (0..65535)

Identifies the internal VCI assigned to a local endpoint by the switch. The cwaChanLocalVpi, cwaChanLocalVci, and the cwaChanLocalNSAPAddr form a unique identifier for the connection endpoint in the networking domain.

Max-Access: read-only

Status: current

none

cwaChanLocal
NSAPAddr

CiscoWanNsapAtm
Address

Identifies the internal NSAP assigned to a local endpoint by the switch. The cwaChanLocalVpi, cwaChanLocalVci, and the cwaChanLocalNSAPAddr form a unique identifier for the connection endpoint in the networking domain.

Max-Access: read-only

Status: current

none

cwaChanRemote
Vpi

Unsigned32 (0..4095)

Identifies the VPI of the peer endpoint. The cwaChanRemoteVpi, cwaChanRemoteVpi, and the cwaChanRemoteNSAPAddr identify the peer endpoint in the networking domain.

Max-Access: read-create

Status: current

none

cwaChanRemote
Vci

Unsigned32 (0..65535)

Identifies the VCI of the peer endpoint. The cwaChanRemoteVpi, cwaChanRemoteVpi, and the cwaChanRemoteNSAPAddr identify the peer endpoint in the networking domain.

Max-Access: read-create

Status: current

none

cwaChanRemote
NSAPAddr

CiscoWanNsapAtm
Address

Identifies the VCI of the peer endpoint. The cwaChanRemoteVpi, cwaChanRemoteVpi, and the cwaChanRemoteNSAPAddr identify the peer endpoint in the networking domain.

Max-Access: read-create

Status: current

none

cwaChanControllerId

Unsigned32 (1..255)

Associates an endpoint with a specific controller. Usually resource partitioning makes the association between a controller and a range of vpi-vci. There can be switches where hard partitioning of vpi-vci cannot be implemented. This object serves to tie a specific vpi-vci to a controller.

Max-Access: read-create

Status: current

2

cwaChanRouting
Mastership

TruthValue

Identifies this endpoint as the master endpoint of the connection if set to true(1). After a master endpoint is added, the networking entity initiates routing of a PVC connection only. Mastership of a PVC cannot be changed. Once provisioned, this object can be set only during row creation.

Max-Access: read-create

Status: current

false

cwaChanMaxCost

Unsigned32 (0..4294967295)

Uses the networking entity to select a route based on the cost factor. The cost of the links and nodes are contained in a path that are aggregated and compared against this object.

The networking entity prefers a path whose aggregate cost factor is lesser than the value of this object. If the parameter is set to zero, it indicates to the switch that only the best available route is chosen. If this object is set to a value of 0xFFFFFFFF(4294967295), the switch ignores this metric in making routing decisions.

Max-Access: read-create

Status: current

'FFFFFFFF'h

cwaChanReroute

TruthValue

Uses the administrator to trigger the rerouting of the connection. Rerouting takes effect, when this object is set to true(1). When set to false(2), no action is taken.

A get on this object always returns false(2). When this object is set, no other object other than the RowStatus is set in the MIB. Reroute can be triggered only from the master endpoint. Any attempt to trigger reroute from the slave endpoint would result in a failure of the SET operation.

Max-Access: read-create

Status: current

false

cwaChanFrame
Discard

TruthValue

Enables the frame discard feature at the endpoint when set to true(1).

Max-Access: read-create

Status: current

false

cwaChanOper
Status

CiscoWanOper
Status

Reflects operational status of an endpoint. This object is set to operFail(2), if the connection is not routed, if the endpoint receives AIS/RDI, or if there is a CC failure. If the connection is administratively down, this object is set to adminDown(3). For a normal case, this object is set to operOk(1).

Max-Access: read-only

Status: current

none

cwaChanPCR

Unsigned32 (0..4294967295)

Defines the Peak Cell Rate (PCR) for the local to remote direction.

Units: cells per second

Max-Access: read-create

Status: current

none

cwaChanMCR

Unsigned32 (0..4294967295)

Defines the Minimum Cell Rate (MCR) for the local to remote direction.

Units: cells per second

Max-Access: read-create

Status: current

none

cwaChanSCR

Unsigned32 (0..4294967295)

Defines the Sustainable Cell Rate (SCR) for the local to remote direction.

Units: cells per second

Max-Access: read-create

Status: current

none

cwaChanCDV

Unsigned32 (0..16777215)

Specifies the maximum tolerable cell delay variation in the local to remote direction. If this parameter is set to 0xFFFFFF (16777215), it indicates to the switch that this parameter does not have significance in the SPVC call setup.

Units: microseconds

Max-Access: read-create

Status: current

'FFFFFF'h

cwaChanCTD

Unsigned32 (0..65535)

Specifies the maximum tolerable network transfer delay in the local to remote direction. If this parameter is set to 0xFFFFF (16777215), it indicates to the switch that this parameter does not have significance in the SPVC call setup.

Units: milliseconds

Max-Access: read-create

Status: current

'FFFF'h

cwaChanMBS

Unsigned32 (0..5000000)

Specifies the Maximum Burst Size (MBS) used in the local to remote direction. Refer to ATM Forum Traffic Management Specification, Version 4.0, Annex C for more information.

Units: cells

Max-Access: read-create

Status: current

none

cwaChanCDVT

Unsigned32 (0..4294967295)

Specifies the Cell Delay Variation Tolerance (CDVT) used in the local to remote direction. If this parameter is set to 0xFFFFFFFF(4294967295), it indicates to the switch that it can use a default value of CDVT.

Refer to ATM Forum Traffic Management Specification, Version 4.0, Annex C for more information.

Units: microseconds

Max-Access: read-create

Status: current

'FFFFFFFF'h

cwaChanPercent
Util

Unsigned32 (0..100)

Provides a per connection control for overbooking bandwidth. This is used in conjunction with the Virtual Switch Interface policy while performing Connection Admission Control (CAC), which is applied for the local to remote direction.

Max-Access: read-create

Status: current

100

cwaChanRemote
PCR

Unsigned32 (0..4294967295)

Specifies the Peak Cell Rate (PCR) for the remote to local direction.

Units: cells per second

Max-Access: read-create

Status: current

none

cwaChanRemote
MCR

Unsigned32 (0..4294967295)

Specifies the Minimum Cell Rate (MCR) for the remote to local direction.

Units: cells per second

Max-Access: read-create

Status: current

none

cwaChanRemote
SCR

Unsigned32 (0..4294967295)

Specifies the Sustainable Cell Rate (SCR) for the remote to local direction.

Units: cells per second

Max-Access: read-create

Status: current

none

cwaChanRemote
CDV

Unsigned32 (0..16777215)

Specifies the maximum tolerable cell delay variation for the remote to local direction. If this parameter is set to 0xFFFFFF(16777215), it indicates to the switch that this parameter does not have significance in SPVC call setup.

Units: microseconds

Max-Access: read-create

Status: current

'FFFFFF'h

cwaChanRemote
CTD

Unsigned32 (0..65535)

Specifies the maximum tolerable network transfer delay in the remote to local direction. If this parameter is set to 0xFFFF(65535), it indicates to the switch that this parameter does not have significance in SPVC call setup.

Units: milliseconds

Max-Access: read-create

Status: current

'FFFF'h

cwaChanRemote
MBS

Unsigned32 (0..5000000)

Specifies the Maximum Burst Size (MBS) used in the remote to local direction. Refer to ATM Forum Traffic Management Specification, Version 4.0, Annex C for more information.

Units: cells

Max-Access: read-create

Status: current

none

cwaChanRemote
CDVT

Unsigned32 (0..4294967295)

Specifies the Cell Delay Variation Tolerance (CDVT) is used in the remote to local direction. If this parameter is set to 0xFFFFFFFF(4294967295), it indicates the switch can use a default value of CDVT.

Refer to ATM Forum Traffic Management Specification, Version 4.0, Annex C for more information.

Units: cells

Max-Access: read-create

Status: current

'FFFFFFFF'h

cwaChanRemote
PercentUtil

Unsigned32 (0..100)

Provides a per connection control for overbooking bandwidth. This is used in conjunction with the VSI interface policy while performing CAC. This is applied for the remote to local direction.

Max-Access: read-create

Status: current

100

cwaChanAbrICR

Unsigned32 (0..4294967295)

Specifies the initial cell rate or the rate at which a source can send after an idle period. The value must not be larger than the Peak Cell Rate (PCR). Refer to ATM Forum Traffic Management Specification, Version 4.0, Section 5.10.2 for more information.

Units: cells/sec

Max-Access: read-create

Status: current

none

cwaChanAbrADTF

Unsigned32 (1..1023)

Describes the ACR Decrease Time Factor. This is the time permitted between sending Resource Management Cells before the rate is decreased to the Initial Cell Rate. Refer to ATM Forum Traffic Management Specification, Version 4.0, Section 5.10.2 for more information.

Units: 10 milliseconds

Max-Access: read-create

Status: current

none

cwaChanAbrRDF

AbrRateFactors

Describes the Rate Decrease Factor. Controls the rate decrease which occurs when backward RM cells with CI=1 are received. Larger values lead to faster rate decrease. This factor is applied at both the local and remote endpoints, thus, making the loop control symmetrical.

Backward RM cells at the local endpoint correspond to RM cells received in the remote to local direction. Backward RM cells at the remote endpoint correspond to RM cells received in the local to remote direction. Refer to ATM Forum Traffic Management Specification, Version 4.0, Section 5.10.2 for more information.

Max-Access: read-create

Status: current

none

cwaChanAbrRIF

AbrRateFactors

Describes the Rate Increase Factor. Controls the rate increase which occurs when a backward RM cell is received with CI=0 and NI=0. Larger values lead to a faster rate increase. This factor is applied at both the local and remote endpoints, thus making the loop control symmetrical.

Backward RM cells at the local endpoint correspond to RM cells received in the remote to local direction. Backward RM cells at the remote endpoint correspond to RM cells received in the local to remote direction. Refer to ATM Forum Traffic Management Specification, Version 4.0, Section 5.10.2, for more information.

Max-Access: read-create

Status: current

none

cwaChanAbrNRM

INTEGER {nrm2(1), nrm4(2), nrm8(3), nrm16(4), nrm32(5), nrm64(6), nrm128(7), nrm256(8)}

Determines the maximum number of cells a source can send for each forward RM cell. Refer to ATM Forum Traffic Management Specification, Version 4.0, Section 5.10.2 for more information.

Max-Access: read-create

Status: current

none

cwaChanAbrTRM

INTEGER {trm0point78125(1), trm1point5625(2), trm3point125(3), trm6point25(4), trm12point5(5), trm25(6), trm50(7), trm100(8)}

Specifies the upper bound on the time between forward RM cells for an active source (in milliseconds). Refer to ATM Forum Traffic Management Specification, Version 4.0, Section 5.10.2, for more information.

Max-Access: read-create

Status: current

none

cwaChanAbrCDF

INTEGER {cdf0(1), cdfOneOver64(2), cdfOneOver32(3), cdfOneOver16(4), cdfOneOver8(5), cdfOneOver4(6), cdfOneOver2(7), cdfOne(8)}

Controls the rate decrease associated with lost or delayed backward RM cells for the Cutoff Decrease Factor. Larger values result in a faster rate decrease. Refer to ATM Forum Traffic Management Specification, Version 4.0,
Section 5.10.2 for more information.

Max-Access: read-create

Status: current

none

cwaChanAbrFRTT

Unsigned32 (0..16700000)

Delays from the source to a destination network the fixed round trip time or the sum of the fixed propagation. Refer to ATM Forum Traffic Management Specification, Version 4.0, Section 5.10.2, for more information.

Units: microseconds

Max-Access: read-create

Status: current

none

cwaChanAbrTBE

Unsigned32 (0..16777215)

Describes the Transient Buffer Exposure. Before the first RM cell returns, the negotiated number of cells that the network would like to limit is the source to sending during startup periods. Refer to ATM Forum Traffic Management Specification, Version 4.0, Section 5.10.2, for more information.

Max-Access: read-create

Status: current

none

cwaChanAbrERS

CiscoWanERS
Confg

Configures the endpoint for Explicit Rate Stamping. Refer to the textual convention for the values.

Max-Access: read-create

Status: current

none

cwaChanAbrVSVDEnable

TruthValue

Specifies the Abr connections require close loop control to limit the transmission rate, which depends on the network bandwidth. This close loop is end to end or between intermediate network segments.

When terminating an Abr VPL, the endpoint needs to act like a Virtual Destination to the incoming traffic and generate backward RM cells. While doing this it also needs to act as a virtual source and send forward RM cells to the real destination. This is a feature that can be enabled/disabled under the control of this object. When set to true(1), this feature is enabled. Refer to ATM Forum Traffic Management Specification, Version 4.0, Section 5.10.2.

Max-Access: read-create

Status: current

false

cwaChanRow
Status

RowStatus

Creates, modifies, or deletes an entry in the ciscoWanAtmChanTable. A row is created using the CreateAndGo option. When the row is successfully created, the RowStatus is set to active by the agent. A row is deleted by setting the RowStatus to destroy. When there is a need to administratively down the connection, the RowStatus is set to notInService.

When the switch completes the down operation, the value of this object is notInService. The connection is made active again, by setting this object to active. Administrative status control is limited to the master endpoint only. The switch rejects any request for admin state change on the slave endpoint. Other options such as CreateAndWait is not used.

Max-Access: read-create

Status: current

none

cwaChanIntAbrVSVD

CiscoWanVSVD
Confg

Enables or disables the VSVD internal to a segment; for example, the closed loop control is effected between the two provisioned endpoints of the SPVC.

Refer to the ATM Forum Traffic Management Specification, Version 4.0, Section 5.10.2, for more information.

Max-Access: read-create

Status: current

switchDefault

cwaChanExtAbrVSVD

CiscoWanVSVD
Confg

Enables or disables the VSVD external to the segment, which hosts the two endpoints of the SPVC; for example, the closed loop control is effected outside the segment either towards a CPE or towards another segment.

Refer to the ATM Forum Traffic Management Specification, Version 4.0, Section 5.10.2.

Max-Access: read-create

Status: current

switchDefault

cwaChanAisIW
Capability

CiscoWanAisIW

Achieves OAM inter-operability between switches that cannot generate or detect segment AIS cells. This attribute enables the new generation of switches to understand the OAM capability of the peer endpoint to generate or detect seg or e2eAIS as required. The value of this attribute is decided during provisioning time by network management.

Max-Access: read-create

Status: current

e2eAisCapable

cwaChanCLR

Unsigned32 (1..15)

Represents the maximum tolerable cell loss ratio for the encoded value in the local to remote direction. The actual CLR value is derived as the negative logarithm of this value.

Max-Access: read-create

Status: current

6

cwaChanRemote
CLR

Unsigned32 (1..15)

Represents the maximum tolerable cell loss ratio for the value in the remote to local direction. The actual CLR value is derived as the negative logarithm of this value.

Max-Access: read-create

Status: current

6


Channel State Group

The Channel State Group contains all objects reflecting the state of an SPVC on a ATM Capable Service Module.

The object identifiers are listed in Table 11-4.

Table 11-4 Channel State Group Object Identifiers 

Name
Object Identifier

cwAtmChanStateTable

::= {cwAtmChanState 1}

cwAtmChanStateEntry

::= {cwAtmChanStateTable 1}

cwaChanAlarmState

::= {cwAtmChanStateEntry 1}

cwaChanEgressXmtState

::= {cwAtmChanStateEntry 2}

cwaChanEgressRcvState

::= {cwAtmChanStateEntry 3}

cwaChanIngressXmtState

::= {cwAtmChanStateEntry 4}

cwaChanIngressRcvState

::= {cwAtmChanStateEntry 5}


The MIB objects are listed in Table 11-5.

Table 11-5 Channel State Group MIB Objects 

Name
Syntax
Description
Default Value

cwAtmChanStateTable

Sequence of cwAtmChanStateEntry

Contains the channel status information for all ATM connections configured in cwAtmChanCnfgTable.

Max-Access: not-accessible

Status: current

none

cwAtmChanStateEntry

cwAtmChanStateEntry

Provides an entry in cwAtmChanStateTable.

Max-Access: not-accessible

Status: current

The indexes include:

ifIndex

cwaChanVpi

cwaChanVci

none

cwaChanAlarmState

CiscoWanAlarmState

Defines the alarms associated with an endpoint. Refer to the description in the textual convention.

Max-Access: read-only

Status: current

none

cwaChanEgressXmt
State

CiscoWanXmtState

Specifies the state of the transmit portion of the endpoint in the egress direction.

Max-Access: read-only

Status: current

none

cwaChanEgressRcv
State

CiscoWanRcvState

Specifies the state of the receive portion of the endpoint in the egress direction.

Max-Access: read-only

Status: current

none

cwaChanIngressXmt
State

CiscoWanXmtState

Specifies the state of the transmit portion of the endpoint in the ingress direction.

Max-Access: read-only

Status: current

none

cwaChanIngressRcv
State

CiscoWanRcvState

Specifies the state of the receive portion of the endpoint in the ingress direction.

Max-Access: read-only

Status: current

none


Channel Test Group

The Channel Test Group contains all the objects needed for SPVC diagnostics.

The object identifiers are listed in Table 11-6.

Table 11-6 Channel Test Group Object Identifiers 

Name
Object Identifier

cwAtmChanTestTable

::= {cwAtmChanTest 1}

cwAtmChanTestEntry

::= {cwAtmChanTestTable 1}

cwaChanTestType

::= {cwAtmChanTestEntry 1}

cwaChanTestDir

::= {cwAtmChanTestEntry 2}

cwaChanTestIterations

::= {cwAtmChanTestEntry 3}

cwaChanTestState

::= {cwAtmChanTestEntry 4}

cwaChanTestRoundTripDelay

::= {cwAtmChanTestEntry 5}


The MIB objects are listed in Table 11-7.

Table 11-7 Channel Test Group MIB Objects 

Name
Syntax
Description
Default Value

cwAtmChanTestTable

Sequence of cwAtmChanTestEntry

Contains configuration information for performing connection diagnostics on ATM connections and obtaining results after testing.

Max-Access: not-accessible

Status: current

none

cwAtmChanTestEntry

cwAtmChanTestEntry

Provides an entry in cwAtmChanTestTable for each ATM connection endpoints.

Max-Access: not-accessible

Status: current

The indexes include:

ifIndex

cwaChanVpi

cwaChanVci

none

cwaChanTestType

CiscoWanLpbkTypes

Configures an endpoint in loopback. To configure a destructive loopback, this object needs to be set to destructive(2). The direction in which this destructive loopback needs to be effected is specified using the cwaChanTestDir object.

To deconfigure destructive loopback, this object needs to be set to noLpbk(1).

To configure a non-destructive loopback, this object needs to be set to nonDestructive(3). The direction in which this non-destructive loopback needs to be effected is specified using the cwaChanTestDir object.

Non-destructive loopback gets deconfigured automatically at the switch after a certain timeout. However, if there is a need to abort a non-destructive loopback, a set operation on this object should be performed with a value noLpbk (1). Attempting to set a channel in loopback, when one is already in progress results in a failure of the set operation (with appropriate error code).

Max-Access: read-create

Status: current

noLpbk

cwaChanTestDir

CiscoWanLpbkDir

Specifies the direction in which loopback is effected. For destructive loopback, this takes values external(1) and internal(2).

For non-destructive loopback, this takes values forward(3) and reverse(4). When cwaChanTestType is noLpbk(1), this object is ignored.

Max-Access: read-create

Status: current

none

cwaChanTestIterations

Unsigned32 (1..255)

Specifies the number of loopback cells to inject. This applies to the nondestructive mode of loopback tests only. The Get operation on this object returns the successful number of loopback iterations performed on the endpoint.

Max-Access: read-create

Status: current

1

cwaChanTestState

CiscoWanTestStatus

Reflects the status of the last requested test. If a loopback had never been effected on an endpoint, this object reads
noStatus(1). If a destructive mode of loopback is configured on an endpoint, this object always reads lpbkInEffect(6).

If a nondestructive mode of loopback is in progress, this reads lpbkInProgress(2). If a nondestructive mode of loopback has completed successfully, this reads lpbkSuccess(3). If a nondestructive mode of loopback has aborted, either due to user request or switch's limitation, this reads lpbkAbort(4). If a nondestructive mode of loopback has failed, this reads lpbkTimeOut(5).

Max-Access: read-only

Status: current

noStatus

cwaChanTestRound
TripDelay

Unsigned32 (1..100000000)

Specifies that this object is applicable only for the nondestructive mode of loopback. It returns the round trip delay measured during the last nondestructive loopback test.

Units: microseconds

Max-Access: read-only

Status: current

none


Cisco WAN ATM Connection Conformance Information

One object identifier is listed in Table 11-8.

Table 11-8 Cisco WAN ATM Connection Conformance Object Identifier

Name
Object Identifier

cwaChanAbrVSVDEnable

::= {ciscoWanAtmConnMIBCompliances 1}


The MIB objects are listed in Table 11-9.

Table 11-9 Cisco WAN ATM Connection Conformance MIB Objects 

Name
Syntax
Description
Default Value

ciscoWanAtmConnMIB
Compliance

none

Specifies the compliance statement for the Cisco ATM connection management group.

Note Implementation of the ciscoWanAtmConnMIBCompliance group is optional for the systems where connection state is not available on a per connection basis.

Status: current

Module: AXSM

ciscoWanAtmConnChanMIBGroup is the mandatory group.

none

cwaChanFrameDiscard

none

Specifies the read and write access is not required for those switches that do not support the frame discard feature.

Min-Access: not-accessible

none

cwaChanCCEnable

none

Specifies the read and write access is not required for those switches that do not support Continuity Check capability.

Min-Access: not-accessible

none

cwaChanStatsEnable

none

Specifies the read and write access is not required for those switches that do not support the connection related statistics collection.

Min-Access: not-accessible

none

cwaChanAbrERS

none

Specifies the read and write access is not required for those switches that do not support Explicit Rate Stamping (ERS).

Min-Access: not-accessible

none

cwaChanAbrVSVDEnable

none

Specifies the read and write access is not required for those switches that do not support the Virtual Source Virtual Destination feature.

Min-Access: not-accessible

none


Cisco WAN ATM Connection Units of Conformance

The object identifiers are listed in Table 11-10.

Table 11-10 Cisco WAN ATM Connection Units of Conformance Object Identifiers

Name
Object Identifier

ciscoWanAtmConnChanMIBGroup

::= {ciscoWanAtmConnMIBGroups 1}

ciscoWanAtmConnStateGroup

::= {ciscoWanAtmConnMIBGroups 2}


The MIB objects are listed in Table 11-11.

Table 11-11 Cisco WAN ATM Connection Units of Conformance MIB Objects 

Name
Objects
Description
Default Value

ciscoWanAtmConn
ChanMIBGroup

cwaChanServiceCategory, cwaChanVpcFlag, cwaChanStatsEnable, cwaChanCCEnable, cwaChanUploadCounter, cwaChanIdentifier, cwaChanLocalVpi, cwaChanLocalVci, cwaChanLocalNSAPAddr, cwaChanRemoteVpi, cwaChanRemoteVci, cwaChanRemoteNSAPAddr, cwaChanControllerId, cwaChanRoutingMastership, cwaChanMaxCost, cwaChanReroute, cwaChanFrameDiscard, cwaChanOperStatus, cwaChanPCR, cwaChanMCR, cwaChanSCR, cwaChanCDV, cwaChanCTD, cwaChanMBS, cwaChanCDVT, cwaChanPercentUtil, cwaChanRemotePCR, cwaChanRemoteMCR, cwaChanRemoteSCR, cwaChanRemoteCDV, cwaChanRemoteCTD, cwaChanRemoteMBS, cwaChanRemoteCDVT, cwaChanRemotePercentUtil, cwaChanAbrICR, cwaChanAbrADTF, cwaChanAbrRDF, cwaChanAbrRIF, cwaChanAbrNRM, cwaChanAbrTRM, cwaChanAbrCDF, cwaChanAbrFRTT, cwaChanAbrTBE, cwaChanAbrERS, cwaChanAbrVSVDEnable, cwaChanRowStatus, cwaChanIntAbrVSVD, cwaChanExtAbrVSVD, cwaChanAisIWCapability, cwaChanCLR, cwaChanRemoteCLR,cwaChanTestType, cwaChanTestDir, cwaChanTestIterations, cwaChanTestState, cwaChanTestRoundTripDelay

Specifies the objects related to connection information.

Status: current

none

ciscoWanAtmConnStateGroup

cwaChanAlarmState, cwaChanEgressXmtState, cwaChanEgressRcvState, cwaChanIngressXmtState, cwaChanIngressRcvState

Specifies the objects that are related to the connection state information.

Status: current

none