An llc2 sap link entity represents one of the links that operates over a
particular SAP (service access point ).
1 – character
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.
2 – counter
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
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.