Alcatel-Lucent 9500 MXC, Руководство пользователя

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9500 MXC User Manual
3DB 23063 ADAA - Rev 004 July 2007 Vol. IV-8-15
protected operation.
2. For LINK or DATA protection, identify which is to become primary. This is
important where you wish to maintain any existing circuit connections; the
LINK or DATA assigned as primary will retain its existing connections, and
circuit assignments for the secondary will automatically be configured to
match the primary. (Any prior circuit connections for the secondary will be
dropped - view ‘Consequences’ for on-screen advice).
• Click first on the component which is to become primary then click Protect
to view the Protection Selection window. Only valid partners are shown.
• For a LINK select the partner and the protection type required, then click OK
to confirm.
• For a DATA select the partner and the tributary protection type required,
then click OK to confirm.
3. For a dual protection of protected links or protected with non-protected,
identify which is to become primary. The protected LINK assigned as primary
will retain its existing connections; circuit assignments for the secondary will
automatically be configured to match the primary.
• Click first on the LINK which is to become primary then click Protect to
view the Protection Selection window.
• For a protected link only dual protection options are shown. Select the
partner and the protection type, then click OK to confirm.
4. For RING protection, identify which is to become east and west. The LINK
or DATA (DAC 155oM) assigned as east will retain any existing connections,
and circuit assignments for the west will automatically be assigned to match
the east. (Any prior circuit connections for the west will be dropped - view
‘Consequences’ for on-screen advice).
• Click first on the component which is to become east then click Protect to
view the Protection Selection window. Only valid partners are shown.
• Select ring-wrap and unwrap criteria. See Figure 8-4. Options are provided
for Standard and Sensitive, with additional unwrap selections of an
Error-free Timer, and a Delayed Ring Unwrap timer:
- Standard is default for wrap and unwrap. For information on ring wrap and
unwrap criteria, refer to Ring Protection Switching Criteria on page 3-98,
Volume II, Chapter 3.
- Sensitive adds a 10
-6
BER event to the wrap and/or unwrap criteria. A
wrap will occur on occurrence of a standard wrap event and/or a 10
-6
BER
event. Similarly an unwrap will not occur until after completion of an
error-free period that is clear of any standard or 10
-6
BER events.