Internet Time - ADTRAN SmartRG SR555ac User Manual

3. Modify the fields using the information provided in the following table.
4. Click Save/Apply
The fields on this page are defined below.
Field Name
STUN Server Address
STUN Server Port
STUN Server User Name
STUN Server Password
STUN Server Maximum
Keep Alive Period *
STUN Server Minimum
Keep Alive Period *
* This mechanism is used for refreshing NAT bindings with using Restricted Cone NAT or Port Restricted Cone NAT. A device's
internal address / port mappings (which the STUN protocol can use) can have keep alive values attributed. These minimum and
maximum keep alive times define the minimum time to retain the mapping information that STUN has discovered, and the maximum
time to retain that information, before refreshing it through forced re-discovery.
With these NAT schemes, the initial network address translation may not be used after a specified elapsed time. Internal mapping is
dropped. The gateway then assigns a different address mapping. This mechanism allows for coordinated refresh on the bindings for
mappings used by the STUN protocol. For further information, review STUN-related RFCs.
Selecting appropriate values for these two fields is influenced by a various environmental factors including device types deployed,
services employed and NAT configuration options enabled within the topology.

Internet Time

On this page, you can configure the gateway to synchronize its time with the Internet time servers.
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to commit your changes.
Description
Enter the physical STUN server's assigned network address. An invalid address will produce an
immediate on-page error message from the gateway. You can enter a maximum of 256 characters
An ACS server may also have STUN functionality running on the same physical box. Consult your ACS
vendor for implementation options and also TR-069 protocol documentation, if necessary.
Enter the port number associated with your STUN server infrastructure. Options are 0 - 64435. The
default is 3478.
Enter the username by which the gateway accesses the STUN infrastructure. Maximum length is 256
characters. Special characters are accepted.
Enter the password by which the modem authenticates the above username to the STUN
infrastructure. Maximum length is 256 characters. Special characters are accepted. The value will be
hidden.
Enter the maximum time( in seconds) that the keepalive function should be active. Options are 0-
Unlimited. The default is -1 (no maximum limit).
Enter the minimum time( in seconds) that the keepalive function should be active. Options are 0-
Unlimited. The default is 0 seconds.
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