Terminal Protection; Terminal Protection Operation And Rules - Alcatel-Lucent 9500 MXC User Manual

Terminal Protection

Terminal Protection Operation and Rules

3DB 23063 ADAA - Rev 004 July 2007
The protectable Terminals are:
IDU
IDU 20x
IDU 155o
Tx protection switching is not hitless. Rx path switching (voting) is hitless
(errorless) between the two receive data streams on hot-standby and space
diversity.
Tributaries must be configured for either Tributary Protected or Tributary Always
On.
Refer to:
• Terminal Protection Operation and Rules on page 8-17
• IDU Protection Configuration on page 8-20
Note that when an IDU 20x is configured for protected operation above 20xE1 or
16xDS1, the standard trib and PSU protection functions are not supported.
• For capacities to 20xE1 / 16xDS1 standard IDU equipment and path protection
applies, with Y cables normally used on the tribs.
• For higher capacities, traffic from the standby IDU is routed to the online IDU
to support termination of up to 40xE1 or 32xDS1 tribs. In this configuration trib
and PSU protection is not supported, however RAC/ODU and path protection
functions are retained, though unlike operation at 20xE1 / 16xDS1 there is no
Rx voting on the two receive streams; each Rx default sources its data form its
directly-connected ODU. In the event of a path/ODU failure the affected IDU
switches to source its data from its partner IDU, which is not hitless.
Operation and Rules:
1. The IDU partners must be of the same type and configured for the same
capacity, modulation, frequency and Tx power.
2. Each partner must be separately configured; there is currently no ability to
configure one, and copy its configuration to the other.
3. A protected IDU pairing does not support protected operation to an INU. A
protected IDU link requires like IDUs at both ends.
4. The IDU partners must be loaded with the same release of operating
9500 MXC User Manual
Protection Options
Hot-standby, Space Diversity
Hot-standby, Space Diversity
Vol. IV-8-17