AudioCodes Mediant 4000 SBC, User Manual

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CHAPTER 16 Services
Mediant 4000 SBC | User's Manual
The following table shows an example of different scenarios of LDAP queries of a cached key
whose cached Attributes include
a , b , c , and d , where a is the oldest and d the most recent
Attribute:
Table 16-12:Example of LDAP Query for Cached Attributes
Attributes Requested in New
LDAP Query for Cached Key Attributes Sent in LDAP
Query to LDAP Server
Attributes Saved in Cache
after LDAP Response
e e , a, b, c, d e , a, b, c, d
e , f e , f , a, b, c, d e , f , a, b, c, d
e , f , g , h , i e , f , g , h , i , d e , f , g , h , i , d
e , f , g , h , i , j e , f , g , h , i , j e , f , g , h , i , j
● The LDAP Cache feature is applicable only to LDAP-based SIP queries (Control).
● The maximum LDAP cache size is 10,000 entries.
● The device can save up to six LDAP Attributes in the cache per searched LDAP
key.
● The device also saves in the cache queried Attributes that do not have any values
in the LDAP server.
The following procedure describes how to configure the device's LDAP cache through the Web
interface. For a full description of the cache parameters, see
LDAP Parameters .
➢
To enable and configure the LDAP cache:
1. Open the LDAP Settings page ( Setup menu > IP Network tab > RADIUS & LDAP folder >
LDAP Settings ).
2. From the 'LDAP Cache Service' drop-down list, select Enable to enable LDAP cache.
3. In the 'LDAP Cache Entry Timeout' field, enter the duration (in minutes) for which an entry in
the LDAP cache is valid.
4. In the 'LDAP Cache Entry Removal Timeout' field, enter the duration (in hours) after which the
device removes the LDAP entry from the cache.
5. Click Apply , and then reset the device with a save-to-flash for your settings to take effect.
Refreshing the LDAP Cache
You can refresh values of LDAP Attributes associated with a specified LDAP search key that are
stored in the device's LDAP cache. The device sends an LDAP query to the LDAP server for the
cached Attributes of the specified search key and replaces the old values in the cache with the new
values received in the LDAP response.
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