hold-time (SONET/SDH Defect Triggers)
Syntax
Hierarchy Level
Release Information
Statement introduced before Junos OS Release 7.4.
Description
For ATM over SONET/SDH and SONET/SDH interfaces only, apply up and down hold times to SONET/SDH defect triggers. When you apply a down hold time to a defect, the defect must remain present for at least the hold-time period before the interface is marked down. When you apply an up hold time to a defect, the defect must remain absent for at least the hold-time period before the interface is marked up, assuming no other defect is outstanding.
 | Note: On M Series and T Series platforms with Channelized SONET IQ PICs and Channelized SONET IQE PICs, the SONET defect alarm trigger hold-time statement is not supported. |
Default
If you do not include this statement, when a defect is detected the interface is marked down immediately, and when the defect becomes absent the interface is marked up immediately.
Options
down milliseconds—Hold time to wait before the interface is marked down.
- Range: 1 through 65,534 milliseconds
- Default: No hold time
up milliseconds—Hold time to wait before the interface is marked up.
- Range: 1 through 65,534 milliseconds
- Default: No hold time
Required Privilege Level
interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.
