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3. Complete each field in accordance with the implementation specifics of your server.
4. Click
Save/Apply
to commit your changes.
The fields on this page are explained in the following table.
Field Name
Description
STUN Server
The physical STUN server's assigned network address. An invalid address will produce an
Address
immediate on-page error message from the gateway. You can enter a maximum of 256 char-
acters.
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.
STUN Server Port Set the port number associated with your STUN server infrastructure. Options are 0 -
64435 . The default is 3478 .
STUN Server
Enter the username by which the gateway accesses the STUN infrastructure. Maximum
User Name
length is 256 characters. Special characters are valid. The value will be hidden.
STUN Server Pass-
Enter the password by which the modem authenticates the above username to the STUN
word
infrastructure. Maximum length is 256 characters. Special characters are valid. The value
will be hidden.
STUN Server Max-
Enter the maximum length of the keep alive period in seconds. Options are 0 - Unlimited .
The default is -1 (no maximum limit).
imum Keep Alive
Period *
STUN Server Min-
Enter the minimum length of the keep alive period in seconds. Options are 0 - Unlimited.
imum Keep Alive
The default is 0.
Period *
* This mechanism is used in coordination with the refreshing of NAT bindings. Specifically, in conjunction with use of Restricted Cone
NAT or Port Restricted Cone NAT (as may be configured in some gateways). A device's internal address / port mappings, which the
STUN protocol is allowed to make use of, can have keep alive values attributed. These minimum and maximum keep alive times
define respectively, the minimum time to retain the mapping information STUN has discovered, and the maximum time to retain
that information, before refreshing it through forced re-discovery.
With the above-mentioned NAT schemes, it is possible the network address translation initially established may not be used after a
specified elapsed time. Such internal mapping is dropped. The gateway will then assign a different address mapping. This mech-
anism within the STUN protocol allows for coordinated refresh on the bindings for mappings it uses. For further information, review
STUN-related RFCs.
Selecting appropriate values for these two fields are influenced by a variety of environmental factors including devices types
deployed, services employed and NAT configuration options enabled within the topology.
SmartRG Inc., an ADTRAN company. All Rights Reserved. © 2019
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