Resync At A Specific Time; Configurable Schedules - Cisco 6800 Series Provisioning Manual

Configurable Schedules

Resync_Error_Retry_Delay (seconds). If Resync_Error_Retry_Delay is set to 0, the device does not try to
resync again after a failed resync attempt.
If an upgrade fails, a retry is performed after Upgrade_Error_Retry_Delay seconds.
Two configurable parameters are available to conditionally trigger a resync: Resync_Trigger_1 and
Resync_Trigger_2. Each parameter can be programmed with a conditional expression that undergoes macro
expansion. When the resync interval expires (time for the next resync) the triggers, if set, will prevent resync
unless one or more triggers evaluates to true.
The following example condition triggers a resync. In the example, the last phone upgrade attempt has elapsed
more than 5 minutes (300 seconds), and at least 10 minutes (600 seconds) have elapsed since the last resync
attempt.
$UPGTMR gt 300 and $PRVTMR ge 600

Resync at a Specific Time

The Resync_At parameter allows the phone to resync at a specific time. This parameter uses the 24-hour
format (hhmm) to specify the time.
The Resync_At_Random_Delay parameter allows the phone to resync at an unspecified delay in time. This
parameter uses a positive integer format to specify the time.
Flooding the server with resync requests from multiple phones that are set to resync at the same time should
be avoided. To do so, the phone triggers the resync up to 10 minutes after the specified time.
For example, if you set the resync time to 1000 (10 a.m.), the phone triggers the resync anytime between
10:00 a.m. and 10:10 a.m.
By default, this feature is disabled. If the Resync_At parameter is provisioned, the Resync_Periodic parameter
is ignored.
Configurable Schedules
You can configure schedules for periodic resyncs, and you can specify the retry intervals for resync and
upgrade failures by using these provisioning parameters:
• Resync_Periodic
• Resync_Error_Retry_Delay
• Upgrade_Error_Retry_Delay
Each parameter accepts a single delay value (seconds). The new extended syntax allows for a comma-separated
list of consecutive delay elements. The last element in the sequence is implicitly repeated forever.
Optionally, you can use a plus sign to specify another numeric value that appends a random extra delay.
Example 1
In this example, the phone periodically resyncs every 2 hours. If a resync failure occurs, the device retries at
these intervals: 30 minutes, 1 hour, 2 hours, 4 hours. The device continues to try at 4-hour intervals until it
resyncs successfully.
Resync_Periodic=7200
Cisco IP Phone 6800 Series Multiplatform Phones Provisioning Guide
24
Provisioning Scripts