show [node node-id] lapb version
all [attributes]
all characteristics
1 – Characteristic
o version
Default: None Value: Current version number
Version number of the DNA HDLC architecture to which this
implementation conforms. You cannot modify this characteristic.
2 – link
show [node node-id] lapb -
link simple-name attribute [,attribute...]
all [attributes]
all characteristics
all counters
all identifiers
all status
Examples:
show lapb link * name, protocol state
show lapb link link-0 all
2.1 – Characteristics
o acknowledge timer
Default: Supplied by profile Value: 1-60000
Time, in milliseconds, to wait for an acknowledgment before
initiating recovery action. This attribute corresponds to the
LAPB parameter T1. You can modify this characteristic only when
the entity is disabled.
o holdback timer
Default: Implementation specific Value: 0-60000
Delay, in milliseconds, before an acknowledgment must be sent.
This characteristic corresponds to the LAPB parameter T2. You can
modify this characteristic only when the entity is disabled.
o interface type
Default: dte Value: dce or dte
Address mode for this link.
dce Use DCE address mode.
dte Use DTE address mode.
You can modify this characteristic only when the entity is
disabled.
o maximum data size
Default: Supplied by Value: 1-65532
profile
Maximum frame size, in octets, of an information field in an
I-frame.
o physical line
Default: No default Value: Local entity name
Name of the Physical layer and line entity over which the LAPB
protocol is to operate. You must give this characteristic a value
before you enable the link.
o poll timer
Default: Implementation specific Value: Supplied by profile
Maximum period in seconds that may elapse without frames being
exchanged on the Data Link. On expiration, an RR(P) is sent to
elicit a response from the other end.
o profile
Default: No default Value: String
Name of the X.25 Level 2 Profile that defines subscription
details associated with the PSDN to which this DTE is connected.
You cannot modify this characteristic. This characteristic is set
by means of an argument to the create command.
o receive buffers (OpenVMS)
Default: Implementation specific Value: 1-128
Specifies the number of receive data buffers.
o retry maximum
Default: Supplied by profile Value: 1-255
Maximum number of times that a frame will be retransmitted
before assuming a fatal error, at which point more drastic
error recovery action will be attempted. This characteristic
corresponds to the LAPB parameter N2.
o sequence modulus
Default: Supplied by profile Value: 8 or 128
Type of sequence numbering.
8 Use normal sequence numbering.
128 Use extended sequence numbering.
o window size
Default: Supplied by profile Value: 1-127
Window size for transmitting and receiving I-frames. This
characteristic corresponds to the LAPB parameter K.
2.2 – Counters
o buffer unavailable errors (OpenVMS)
Number of times that the underlying framing level has indicated
system buffer unavailability to the Data Link layer.
o crc errors received
Number of frames received with a bad CRC.
o creation time
Time at which the entity was created.
o data octets received
Number of data octets received from the remote station. This
value does not include retransmissions.
o data octets sent
Number of data octets sent to the remote station. This value does
not include retransmissions.
o data pdus received
Number of I-frames received from the remote station. This value
does not include retransmissions.
o data pdus sent
Number of I-frames sent to the remote station. This value does
not include retransmissions.
o frmrs sent
Number of FRMR frames generated as a result of invalid incoming
frames.
o frmrs received
Number of FRMR frames received.
o polls received
Number of command frames received with the P-bit set.
o rejs received
Number of REJ frames received.
o rejs sent
Number of REJ frames transmitted.
o rnrs received
Number of RNR frames received.
o rnrs sent
Number of RNR frames transmitted.
o times acknowledge timer expired
Number of times the local acknowledge timer has expired.
o times link halted
Number of times the link halt event has been generated.
o times link initializing
Number of times the link initializing event has been generated.
o times link inoperative
Number of times the link inoperative event has been generated.
o times link maintenance
Number of times the link maintenance event has been generated.
o times link resetting
Number of times the link reset event has been generated.
o times link running
Number of times the link running event has been generated.
o times link setup failed
Number of times the link setup failure event has been generated.
o times link state changed
Number of times a link state transition has occurred.
o times pdu receive overrun
Specifies the number of times a physical line indicated an
overrun condition to the Data Link layer.
o times pdu transmit failed
Number of times an attempt to transmit a frame has failed.
2.3 – Identifier
o name
Simple name assigned to the link when it is created.
2.4 – Status
o line type
Type of line over which this link operates.
nonswitched The line is a nonswitched line.
switched The line is a switched line.
o maximum pdu size
Maximum frame size, in octets, that this station will receive and
transmit. This value includes the frame header.
o physical port
Name of the Physical layer port with which the link is
associated.
o protocol state
State of the LAPB 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 without
connectivity to the remote station.
maintenance The link is in maintenance mode.
resetting The protocol is undergoing a reset operation.
running The protocol is running normally.
o state
Status of the lapb link entity.
off The link is disabled.
on The link is enabled.
o uid
Entity's unique identifier, which is generated when the entity is
created.
3 – port
show [node node-id] lapb -
port port-name attribute [,attribute...]
all [attributes]
all identifiers
all status
Examples:
show lapb port * all
show lapb port * name, state
3.1 – Identifier
o name
Simple name assigned to the port when it is created.
3.2 – Status
o client name
Name of the client with which the port is associated.
o link
Name of the link with which the port is associated.
o state
State of the lapb port entity.
open The port is assigned to a client.
open The port is assigned to a client, but the
disabled associated link is disabled.
o type
Type of port.
sequenced The port is used for sending LAPB data.
unsequenced The port is used for sending loopback data.
This is only possible if the maintenance mode
characteristic of the relevant lapb link entity is
set to true.