DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-1589SYS-LINK (System Links)
9
SYS-LINK (System Links)
System Links are packet links that originate at the Packet Interface board and
traverse various hardware components to specific endpoints. The hardware
components involved on the forward and reverse routes can be different,
depending upon the configuration and switch administration. Various types of
links are defined by their endpoints:
Recording System Link Events
The system links maintenance object records all errors encountered on the links.
Most of these events are not extraordinary unless they occur with an alarming
frequency. The events are logged as they occur, leaving a “trail” to help analyze
abnormal behavior exhibited by the endpoints attached to the links or the links
themselves.
When a link goes down, an alarm is raised immediately. For EAL, INL, and PACL
link types a MINOR alarm is raised; for all other link types a WARNING alarm is
raised. Other alarming conditions that do not cause the link to go down get a
WARNING alarm, regardless of the link type.
Identifying a System Link
In order to trace problems associated with a system link, it is necessary to find its
location. The following methods can be used to find the location of the system
link:
MO Name (in
Alarm Log)
Alarm
Level Initial Command to Run Full Name of MO
SYS-LINK MINOR test sys-link UUCSSpp SYSTEM LINKS
SYS-LINK WARNING test sys-link UUCSSpp SYSTEM LINKS
EAL Expansion Archangel Link terminating at an Expansion Interface board.
This link carries CCMS messages.
INL Indirect Neighbor Link terminating at a Switch Node Interface board
PACL PNC ATM Control Link terminating at a PNC ATM EI board. This link carries
ATM signaling commands from CaPro to the remote TN2238 (ATM-EI)
boards.
PGC Packet Gateway Call-Control Link terminating at a Packet Gateway board
PRI ISDN PRI D-Channel Link terminating at a Universal DS1 board
SAP System (Access) Port Link terminating at a Packet Data port
X.25 BX.25 Link terminating at a Packet Gateway port
