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Manual AD Cache Refresh

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In addition to scheduled periodic AD Cache updates, the 

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 allows you to refresh (update) the AD Cache manually. Subsequent updates are automatically performed at the interval specified in the Update Frequency field or the time specified in the First Update Time field, whichever occurs first.

Typically this feature is used to make user information available immediately after they are added to Active Directory, rather than wait for the automatic update, which might take as long as 30 days.

To Refresh the AD Cache:

  • Click the Refresh Cache text at the top of the Active Directory Configuration page.

Active Directory Caching

The 

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uses

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Active Directory Caching

Sonus SBC 1000/2000 employs a Local AD Cache in an effort to enhance system performance and survivability.

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In the event of a loss of communication with the Active Directory, whether through a loss of network connectivity or an AD server error, the Sonus SBC 1000/2000 the 

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is still able to perform call routing tasks based on the Local AD Cache.

Note
titleSonus Ribbon SBC 1000/2000 Model Differences

If the Sonus SBC 1000/2000 system the 

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is rebooted during an Active Directory Server outage, the Sonus SBC 1000/2000 it will use its local AD cache for call routing purposes (post power up) if:

  • Sonus SBC 1000: an external USB storage drive is attached to the Sonus SBC 1000 main board. Without it, the local AD cache is purged between system reboots (and upgrades). In order to achieve a high level of resiliency, we recommend attaching an external USB drive to your Sonus SBC 1000 unit.
  • Sonus SBC 2000: Unlike the Sonus SBC 1000, the Sonus SBC 2000 model has built-in storage with reserved space for the Local AD cache to overcome this situation. No external storage is necessary.

Manual AD Cache Refresh

In addition to scheduled periodic AD Cache updates, the Sonus SBC 1000/2000 allows you to refresh (update) the AD Cache manually. Subsequent updates are automatically performed at the interval specified in the Update Frequency field or the time specified in the First Update Time field, whichever occurs first.

Typically this feature is used to make user information available immediately after they are added to Active Directory, rather than wait for the automatic update, which might take as long as 30 days.

To Refresh the AD Cache:

...

  • .

Viewing Active Directory Statistics

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Click the Display Statistics text at the top of the Active Directory Configuration page.

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1View Active Directory Statistics

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Tip
titleTips on Active Directory Cache Size

The total size for the Active Directory cache is 20MB20 MiB. Here's a quick calculation showing how the cache memory is utilized:

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Column
width500px

Number of Records to cache

100,000

Number of Attributes per record

4

Number of bytes per attribute

50

Total cache size

100,000 * 4 * 50 = 20MB 20 MiB (approx)

Column
 

Note: The maximum cache size is 25MB
25 MiB. The database pointer information consumes a small portion of the memory, thus the cache capacity will be slightly less than calculation above.

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