DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance Objects
3-1011SYS-LINK (System Links)
3
Common procedure for repairing link problems
The state of a system link is dependent on the state of the various hardware
components that it travels over. To resolve any problems asso ciated with a
system link, use the following proc edure.
The switch maintains a list of hardware comp onents over which the link travels
called the hardware pa th. There are two hardware paths, the current hardware
path and the faulted hard ware path for each of the system links. The cu rrent
hardware path is present only for those li nks that are currently up. When a link is
down, the current hardware path is empty. The faulted hardware path, is always
present once the link has gone down and is

not cleared when the link

subsequently recovers.

The faulted path preserves the p ath that the link
traversed when it last went down. The time at whic h the faulted path was last
recorded is preserved and is acc essible through the status sys-link location
and list sys-link commands. Therefore, the focus of attention for p roblems which
do not involve a link that is down, is th e current hardware path. If the link is d own,
faulted hardware path is the foc us of attention.
The command status sys-link location will present the state of b oth the
hardware paths (current and fa ulted) along with the state of eac h of the
components in the hardware p ath. When analyzing any system link prob lem, look
for alarms on the components listed under desired hard ware path. If any alarms
are present, then follow the maintenance p rocedures for the alarmed
components to clear those ala rms first.
When all the components are alarm free, wait for 3 minutes to allo w the links to
recover. Test the system link through test sys-link PCSSpp long clear and
notice any tests that fail. If any failures are found, fix the problems indic ated by
the tests and repeat the proc edure.
Error Log Entries and Test to Clear Values
Table 3-448. SYS-LINK Error Log Entries
Error
Type
Aux
Data Associated Test
Alarm
Level
On/Off
Board Test to Clear Value
13 (a) System Link Status
(985) WARNING OFF
257 (b) WARNING OFF test sys-link PCSSpp l cl
513 (c) WARNING OFF test sys-link PCSSpp l cl
772 (d) WARNING OFF test sys-link PCSSpp l cl
1025 (e) WARNING OFF test sys-link PCSSpp l cl
1281 (f) WARNING OFF test sys-link PCSSpp l cl
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