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DEFINITY Enterprise Communication Server Release 9
Installation and Maintenance for Survivable Remote EPN 555-233-121
2
SREPN Maintenance
System links
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.
Table 2-14. Hardware path data for link repair
Hardware
path
Current
a
Faulted
a.
Path that the link traversed when it last went down.
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.
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.
Link
Hardware path
status
data present?
Up
Yes
Down
No
Up
b
Down
Yes
November 2000
Errors cleared at
recovery?
Yes
Yes
Yes
No
Issue 2
2-43
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