1 llc2 =title LLC2 The LLC2 module implements one of the protocols in the Data Link layer described by the Digital Network Architecture. The LLC2 entity is the top-level entity in the LLC2 module hierarchy of entities. The LLC2 module controls the operation of the LLC Type 2 data link protocol for local area networks LANs. The hierarchical relationship of the entities that constitute the LLC2 module: LLC2 Port Sap Link 2 character =title Characteristics Attribute VERSION Version number of the DNA LLC2 architecture to which this implementation conforms. You cannot modify this characteristic. To display this attribute, specify all or version. 2 port =title LLC2 Port An LLC2 port entity represents an access point to the services offered to clients by the LLC2 module. The simple-name refers to the port managed by this command. 2 status =title Status Attribute CLIENT Name of the client that opened the port. LINK NAME Name of the LLC2 sap link entity with which this port is associated. STATE State of the LLC2 port entity. OPEN - The port is assigned to a client and is enabled. OPEN DISABLED - The port is assigned to a client but is disabled. 2 sap =title LLC2 SAP Each LLC2 Port entity has an LLC2 SAP (service access point entity associated with it. An LLC2 Sap entity allows links to be multiplexed over its associated port. 3 character =title Charateristics Attributes LAN STATION Default: No entity name Value: Local-entity-name Name of the LAN station entity used by the SAP. You must specify a value for this attribute before you enable the SAP. LOCAL LSAP ADDRESS Default: 7E Value: Hex-number Address of the local link service access point (LSAP) to be used. The lowest significant bit of this value must be clear; that is, the address must be an individual address. 3 counter =title Counter Attributes TIMES SAP STATE CHANGED Number of times the status attribute state has changed from on to off, or from off to on. 3 status =title Status Attibutes LAN PORT Name of the LAN port that is opened and enabled when this SAP is successfully enabled. If the SAP is not enabled, this status has a null value. MAXIMUM PDU SIZE Largest frame size, in octets, that can be used to send or receive data on this SAP. STATE State of the llc2 sap entity. OFF - The SAP is disabled. ON - The SAP is enabled. 2 sap_lnk =title LLC2 SAP Link An llc2 sap link entity represents one of the links that operates over a particular SAP (service access point ). 3 character =title Characteristics Attributes ACKNOWLEDGE TIMER Default: 1000 Value: 1--60000 Time, in milliseconds, that the link waits for an acknowledgment before initiating recovery action. The granularity of this timer is 10 milliseconds. Values that are not multiples of 10 are rounded up. BUSY TIMER Default: 10000 Value: 1--60000 Time, in milliseconds, that the link waits for indication of the clearance of a busy condition at the remote station. The granularity of this timer is 10 milliseconds. Values that are not multiples of 10 are rounded up. HOLDBACK TIMER Default: 500 Value: 0--60000 Delay, in milliseconds, before an acknowledgment must be sent. The granularity of this timer is 10 milliseconds. Values that are not multiples of 10 are rounded up. LOCAL RECEIVE WINDOW SIZE Default: 127 Value: 1--127 Window size used by the link for receiving frames. MAXIMUM DATA SIZE Default: 1028 Value: 1--65531 Largest frame size, in octets, that the link can use to send or receive data. This value does not include the size of the frame header. POLL TIMER Default: 1000 Value: 1--60000 Time, in milliseconds, that the link waits for a response with the F-bit set. The granularity of this timer is 10 milliseconds. Values that are not multiples of 10 are rounded up. REJECT TIMER Default: 3000 Value: 1--60000 Time, in milliseconds, that the link waits for a reply to a REJ ( reject frame. The granularity of this timer is 10 milliseconds. Values that are not multiples of 10 are rounded up. REMOTE LSAP ADDRESS Default: 7E Value: hex-number Address of the destination LSAP (local service access point to be used by the link. The lowest significant bit must be clear; that is, the address must be an individual address. REMOTE MAC ADDRESS Default: 00-00-00-00-00-00 Value: lan-address Destination MAC address to be used by the link. The lowest significant bit of the first octet must be clear; that is, the address must be an individual address. RETRY MAXIMUM Default: 10 Value: 1--255 Maximum number of times that the link retransmits a frame before assuming a fatal error and taking more drastic recovery action. 3 counter =title Counter Attributes DATA OCTETS RECEIVED Number of data octets received in I frames and UI frames from the remote end of the link. This value does not include data octets in retransmissions. DATA OCTETS SENT Number of data octets transmitted in I frames and UI frames to the remote end of the link. This value does not include data octets in retransmissions. DATA PDUS RECEIVED Number of I frames and UI frames received from the remote end of the link. This value does not include retransmissions. DATA PDUS SENT Number of I frames and UI frames transmitted to the remote end of the link. This value does not include retransmissions. FRMRS RECEIVED Number of FRMR (frame reject) frames received. FRMRS SENT Number of FRMR (frame reject) frames generated as a result of invalid incoming frames. POLLS RECEIVED Number of command frames received with the P bit set. REJS RECEIVED Number of REJ (reject) frames received. REJS SENT Number of REJ (reject) frames transmitted. RNRS RECEIVED Number of RNR (receive not ready) frames received. RNRS SENT Number of RNR (receive not ready) frames transmitted. TIMES ACKNOWLEDGE TIMER EXPIRED Number of times the local acknowledge timer has expired. TIMES BUSY TIMER EXPIRED Number of times the local busy timer has expired. TIMES LINK HALTED Number of times the link's status attribute protocol state was set to halted. TIMES LINK INITIALIZING Number of times the link's status attribute protocol state was set to initializing. TIMES LINK INOPERATIVE Number of times the link's status attribute protocol state was set to inoperative. TIMES LINK RESETTING Number of times the link's status attribute protocol state was set to resetting. TIMES LINK RUNNING Number of times the link's status attribute protocol state was set to running. When the link enters the running state, the protocol has been successfully initalized or reset. TIMES LINK SETUP FAILED Number of times the LLC2 protocol fails to initialize correctly after the maximum number of retries. TIMES LINK STATE CHANGED Number of times the link's status attribute STATE changed from on to off, or from off to on. TIMES POLL TIMER EXPIRED Number of times the local poll timer has expired. TIMES REJECT TIMER EXPIRED Number of times the local reject timer has expired. XIDS RECEIVED Number of XID frames received. XIDS SENT Number of XID frames transmitted. 3 status =title Status Attribute PROTOCOL STATE State of the LLC2 protocol with respect to the remote station. ERROR - The protocol is in a recognized error state. HALTED - The protocol has halted. INITIALIZING - The protocol is being initialized. INOPERATIVE - The protocol cannot be started because the LAN station cannot provide a connection to a remote system. RESETIING - The protocol is being reset. RUNNING - The protocol is running normally. REMOTE LLC CLASS Class of the remote LLC. 1 - Class 1 LLC. Only type 1 operation is supported. 2 - Class 2 LLC. Both type 1 and type 2 operations are supported. UNKNOWN - The class has not yet been established. The class is not established until XID frames have been exchanged between the local and remote LLC implementations. REMOTE RECEIVE WINDOW SIZE Window size used by the remote station for receiving frames. The local station uses this value as its window for transmitting frames. STATE State of the llc2 link entity. OFF - The link is disabled. ON - The link is enabled.