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Default
NAT traversal is disabled for CWMP.
Views
CWMP view
Predefined user roles
network-admin
Usage guidelines
Connection requests initiated from the CPE can reach the ACS through a NAT gateway without NAT
traversal. However, for the connection request initiated from the ACS to reach the CPE, you must
enable NAT traversal on the CPE when a NAT gateway resides between the CPE and the ACS.
The NAT traversal feature complies with Simple Traversal of UDP Through NATs (STUN), RFC 3489.
The feature enables the CPE to do the following:
Discovers the NAT gateway.
Obtains an open NAT binding (a public IP address and port binding) through which the ACS can
send unsolicited packets.
The CPE sends the binding to the ACS when it initiates a connection to the ACS. For the connection
requests sent by the ACS at any time to reach the CPE, the CPE maintains the open NAT binding.
For more information about NAT, see Layer 3—IP Services Configuration Guide.
Examples
# Enable NAT traversal for the CPE.
<Sysname> system-view
[Sysname] cwmp
[Sysname-cwmp] cwmp cpe stun enable
cwmp cpe username
Use cwmp cpe username to configure the username for the CPE to authenticate the ACS.
Use undo cwmp cpe username to restore the default.
Syntax
cwmp cpe username username
undo cwmp cpe username
Default
No username is configured for authenticating the ACS.
Views
CWMP view
Predefined user roles
network-admin
Parameters
username: Specifies a username, a case-sensitive string of 1 to 255 characters.
Usage guidelines
You can configure only one username for the ACS to authenticate to the CPE when it initiates a
connection. If you execute this command multiple times, the most recent configuration takes effect.
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