Excel platform SNMP Agent MIB

You are here: SwitchKit SNMP User’s Guide > 1 SNMP Introduction > Excel platform SNMP Agent MIB

For the Management Information Bases (MIBs), all objects are organized into two major groups underneath the node, convergedServicesPlatform (excelProducts 90). The cspAgent group contains all of the notifications, objects, and tables associated with the CSPAgent process. The cspEventManager group contains all of the notifications, objects, and tables associated with the CSPEventManager process.

Important! In this user guide, references to CSPAgent or CSPEventManager (note the capitalization) indicate the executable files. References to cspAgent or cspEventManager indicate the ASN.1 group names in the csp.mib file. In some instances, output from SNMP tools refers to notifications as traps.

Zero-based indexing of tables is not allowed because of the constraint of the ASN.1 syntax in which all SNMP MIBs are defined. All addressing on the Excel platform is zero-based. All addressing information represented as an index in the MIB is one-based, meaning that it has been converted from the zero-based representation on the switch to the one-based MIB representation by adding a one. All index objects in the cspAgent group are represented this way. In other words, if you would like to find out card information about the card in slot 0 on node 5, you would submit a command similar to the following, with the specific indices 6.1:

In the cspEventManager group, addressing of switch entities is handled mostly as variables bound to notifications. As such, these addresses are zero-based because they are not table indices. When the card in slot 0 on node 5 comes into service, the cspCardUp notification would contain the following information:

Group	Description
cspAgentNotifications(0)	For all notifications sent by the CSPAgent process
cspAgentSystem(1)	For agent configuration, the only object currently present is cspAgentSystemVerbose
cspHardware(2)	Objects describing proprietary CSP hardware (includes chassis, cards, dsps, and matrix cards.)
cspProtocols(3)	Objects describing public/standard protocol stacks on CSP hardware. (such as, T1, ISDN, and SS7.)

Group	Description
cspEventManagerNotifications(0)	For the connection notifications sent by the CSPEventManager process.
cspEventManagerSystem(1)	For event manager configuration. Currently, the only object present is cspEventManagerSystemVerbose.
cspEventManagerEvents (2)	For notifications and cspeventTable used to process most switch-initiated events.
cspPPLEventManagerEvents(3)	For notifications and pplEventTable used to process the PPL Event Indication message

The SNMP uses User Datagram Protocol (UDP) as its transport protocol. UDP is not a connection-based, guaranteed delivery network protocol. Therefore, notifications are not guaranteed delivery. So notifications are not always the most reliable way to find out about extraordinary events occurring on a device. Because of this, all switch events are logged and archived by the CSPEventManager process. All switch events are logged to a file named, CSPEventManager.log. The file is created in the directory: $(SK_LOG_DIR), if defined. If SK_LOG_DIR is not defined, this log is created in the directory from which the CSPEventManager process is executed. This log is managed in a similar way to SwitchKit logs. All switch events are archived to either the cspEventTable or the cspPPLEventTable. The cspPPLEventTable archives all occurrences of PPL Event Indication messages. The cspEventTable archives all other switch-initiated messages that are defined as notifications under cspEventNotifications (cspEventManagerEvents 0). Both tables have associated with them a count object and a max object. The count object indicates how many events have been archived in the table at a given time. Count objects are ideal for event polling. The max object indicates the maximum number of events that are archived before the table index rolls over. The max object is a maximum of 500, but is read/writable, and you can set it to as low as ten. You can set this object by issuing the following command at the command line:

Addressing information on the switch is handled in the EXS API by a dynamic addressing scheme using Address Information Blocks (AIBs). When event-driven messages arrive from the Excel platform, entities involved in the event are addressed by the AIB. The AddressType textual-convention is an attempt at representing this dynamic scheme in the static environment of ASN.1. AddressType is defined in csp.mib. The AddressType enumerates all of the possible entities, including:

An AddressType object is bound to notifications and is archived in the event tables. The address type object is always accompanied by three data objects. The value of these data objects depends on the value of the AddressType Object. For example, in the cspCardUp notification above, cspEventAddressType equals slot(3). The definition of AddressType in csp.mib contains a table that explains the meaning of each data object. For slots, cspEventAddressData1 represents the zero-based slot number.

In the following example, the cspPPLEventAddressType is ss7Link(9). In the AddressType table, it implies that cspPPLEventAddressData1 is the SS7 Stack and cspPPLEventAddressData2 is the SS7Link. Because SS7 Links need only two data objects to represent the address, the third data object is unused and initialized to (-1).

cspPPLEventDescription = PPLEventIndication Evt=0x 1 on LinkID = 1, StackID=0, Comp=0x2E: MTP3 LSAC: Link Activation Failure

To obtain a full list of the CSP MIB objects, you can use your Network Management Station to do a MIB walk.

Digital communications link - voice, data, and video at a 1.544 Mbps rate (24 64 Kbps channels)

See Integrated Services Digital Network.

See Signaling System Number Seven.

In PPL, a condition that, when met, drives a state machine (PPL Component) from one state to another, by invoking an associated Primitive. In PPL files, an Event is marked by an arrow and text.

See Programmable Protocol Language.

UPD. User Datagram Protocol. Unreliable networking layer that sits at the same level of networking stack as TCP. Part of the TCP/IP protocol suit, UDP is used for transferring IP datagrams between host computers, where each datagram is routed through the Internet based on the destination IP address.

A condition that, when met, drives a state machine from one state to another. A condition that drives a Component out of its current state by invoking an associated primitive.