DEFINITY Enterprise Communication Server Release 9
Installation and Maintenance for Survivable Remote EPN
555-233-121
Issue 2
November 2000
SREPN Maintenance
2-43
System links
2
System links
The state of a system link is dependent on the state of the various hardware
components that it travels over. The switch maintains a list of hardware
components over which the link travels, called the hardware path.
For each system link there is a current and a faulted hardware path as shown in
Table 2-14
.
1. Focus attention on the
current hardware path
for problems that do not
involve a link that is down.
2. If the link is down, focus on the
faulted hardware path
.
3. If any alarms are present, follow the maintenance procedures for the
alarmed components to clear those alarms first.
Table 2-14. Hardware path data for link repair
Hardware
path
Link
status
Hardware path
data present?
Errors cleared at
recovery?
Current
Up
Yes
Yes
Down
No
Yes
Faulted
a
a.
Path that the link traversed when it last went down.
Up
Yes
Down
Yes
b
b.
The time at which the faulted path was last recorded is preserved and is
accessible through the status sys-link location, which shows the state of both
the hardware paths (current and faulted) and the state of each of the
components in that path, and the list sys-link commands.
No