UPSR Selectors


Use the UPSR Selectors tab to change the unidirectional path switched ring (UPSR) selectors (SF-BER, SD-BER), circuit protection switches and other UPSR circuit parameters.

Item

Description

Node

Name of the UPSR circuit source node.

Working Path

Slot, port, specific synchronous transport signal (STS) (if applicable), and virtual tributary (VT) (if applicable) of the working path.

Protect Path

Slot, port, STS (if applicable), and VT (if applicable) of the protect path.

Revert Time

If Revertive is checked, sets the amount of time that will elapse before traffic reverts to the working path. The range is 0.5 to 12 minutes in 0.5 minute increments.

Switch State

Allows you to apply a traffic switch to the circuit. Valid entries are:

  • LOCKOUT OF PROTECT: Applies a LOCKOUT to prevent traffic from switching to the protect path.

  • FORCE TO WORKING: Applies a FORCE switch to move traffic to the working path.

  • FORCE TO PROTECT: Applies a FORCE switch to move traffic to the working path.

  • MANUAL TO WORKING: Applies a MANUAL switch to move traffic to the working path.

  • FORCE TO PROTECT: Applies a MANUAL switch to move traffic to the working path.

Hold-Off Timer

Sets the amount of time a path selector switch is delayed for circuits routed on a UPSR or BLSR dual-ring interconnect (DRI) topology. In DRIs, switching contention might occur depending upon the relative switching speed of the path selector and the transmission delay on the alternative routes. The hold-off time (HOT) allows you to change switch times to prevent the switching contention.

SF Ber Level

Sets the UPSR signal failure bit error rate (BER) threshold.

SD Ber Level

Sets the UPSR signal degrade BER threshold.

PDI-P

When checked, traffic switches if an STS payload defect indication is received (STS circuits only).

Show Detailed Map

If checked, changes the circuit view in the graphic area to show circuit routing information including source slot, port, STS, and VT. The detailed view also shows working and protect circuit paths.

Show VT Topology

If checked, displays any VT tunnels that carry the VT circuit. If the circuit is not carried by a VT tunnel, no changes appear when the box is checked.

Show WDM Topology

(ONS 15454 only) If checked, hides the transponder (TXP) and muxponder (MXP) connections on which STS and VT circuits are routed, showing only the logical OC-N links. This check box is available only when circuits are routed on TXP or MXP cards provisioned in section or line mode.

Apply

Applies any edits made to the UPSR selectors tab.

Reset

Removes any edits made to the UPSR selectors tab.

Help

Displays CTC context-sensitive help.