Specifications

4 Message Reference
74
4.5.11 ATM_MSG_LINK_STATE –AAL Link Status Indication
Synopsis
Primitive generated by AAL to advise management of changes to the link state.
Format
MESSAGE HEADER
Field Name
Meaning
type
ATM_MSG_LINK_STATE (0x026b)
id
link_id
src
ATM Module ID
dst
Management Module ID
rsp_req
0
hclass
0
status
Stream state (see table below)
err_info
Timestamp
len
0
Description
Sent by the ATM module when an AAL link becomes active or inactive. If the rate of
received messages falls below a fixed threshold of 10 messages per second the link is
deemed to be out of service. Under normal operating conditions the link management
messages will ensure that traffic exceeds this rate.
Value
Mnemonic
State
1
AAL_IN_SERVICE
Entered IN SERVICE state
2
AAL_OUT_SERVICE
Entered OUT OF SERVICE state