o pdu received with header format error
Generated each time the local station detects invalid fields in a
received message, even though the message's CRC was correct. The
errors that can generate this event are:
o Invalid select flag
o Invalid addr value
o Fill fields not zero
o Invalid control type or subtype fields
Arguments:
address Specifies the address of the remote station that
caused the event.
message Specifies the message header that contains the error.
header
o selection address error
Generated each time the controller of a multipoint link
receives a message that contains an address other than that
of the currently selected tributary. This event is supported
only on half-duplex point-to-point links, or if the protocol
characteristic is set to tributary.
Arguments:
current Specifies the address of the currently selected
address tributary station.
previous Specifies the address of the previously selected
address tributary station.
received Specifies the address contained in the received
address message.
o streaming tributary
Records potential jamming of a line by a remote station. It is
generated:
o When a remote station exceeds a maximum transmission interval
without releasing the channel.
o When a remote station fails to release a channel after sending
a message with the select flag set.
o When the jamming condition is cleared.
Arguments:
previous Specifies the address of the previously selected
address tributary station.
received Specifies the address contained in the message
address received after transmission should have ended. This
argument is not present if no message is received.
type Specifies the type of jamming that the local station
detected, or indicates that jamming has now cleared.
Continued The remote station continued to send
transmis- information after it sent a message with
sion after the select flag set.
deselec-
tion
Continued The remote station continued to send
transmis- information after exceeding the maximum
sion after transmission interval.
timeout
Streaming A previous streaming tributary error has
cleared been cleared.
Streaming The remote station continued to send
tributary valid control messages or headers to
data message after exceeding the maximum
transmission interval.
1 – logical_station
o buffer too small
Generated each time a message is received whose data field is
larger than the buffers available on the local station.
Arguments:
buffer Specifies the size of the receive buffer at the local
size station.
count Specifies the size of the received data message as
specified in the message header.
o locally initiated state change
Generated each time the state of the local station changes as a
result of action on the local node.
Arguments:
new state New value of the logical station's protocol state
attribute.
old state Previous value of the logical station's protocol
state attribute.
o receive error threshold reached
Generated each time the number of consecutive receive-related
errors reaches the receive error threshold limit of 7.
o remotely initiated state change
Generated each time the state of the link changes as a result of
action on the remote node.
Arguments:
new state New value of the logical station's protocol state
attribute.
old state Previous value of the logical station's protocol
state attribute.
o selection error threshold reached
This event is generated each time the number of consecutive
selection-related errors reaches the selection error threshold
limit of 7. This event is supported only when the protocol
characteristic of the owning ddcmp link entity is set to control,
or when the link is half-duplex point-to-point.
o send error threshold reached
This event is generated each time the number of consecutive
transmit related errors reaches the transmit error threshold
limit of 7.
o strt received while in maintenance
This event is generated each time a strt message is received
while the value of the status attribute protocol state of the
local station is set to maintenance.