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Cisco Broadband Access Center 3.8 Administrator Guide
OL-27172-01
Chapter 12 Configuring CWMP Service
Connection Request Service
Configuring STUN Parameters (Annex G)
Cisco BAC now includes the TR-069 Annex G support for remotely managing CPE devices which are
connected through a NAT gateway. Annex G uses a STUN server to identify a CPEs public IP address
and port details.
The STUN server also tracks all the changes being made to the CPEs. Annex G uses a UDP based
connection request mechanism defined in TR069 Annex G to allow Cisco BAC to initiate a session with
the CPEs.
Step 1 Choose Devices > Manage Devices.
Step 2 Use one of these methods:
• Add a device record. To do this:
Click the Add button. The Add Device page appears.
• Search for a device record. To do this,
a. Specify a Search Type and enter values for the screen components that are unique to the search type
that you select.
A list of devices appears.
b. Click the Identifier link corresponding to the desired device.
The Modify Device page appears.
Step 3 From the Property Name drop-down list, select the /IPDevice/connectionRequestPort and
/IPDevice/connectionRequestPath properties, and enter appropriate values in the Property Value field.
Configure the following properties at the property hierarchy level:
• /IPDevice/cr/stunEnable
• /IPDevice/cr/stunServerAddress
• /IPDevice/cr/stunServerPort
• /IPDevice/cr/stunServerHttpPort
• /IPDevice/cr/stunServerHttpUsername
• /IPDevice/cr/stunServerHttpPassword
The API constants for /IPDevice/cr/stunEnable, /IPDevice/cr/stunServerAddress,
/IPDevice/cr/stunServerHttpPort, /IPDevice/cr/stunServerPort, /IPDevice/cr/stunServerHttpUsername,
and /IPDevice/cr/stunServerHttpPassword are:
IPDeviceKeys.STUN_ENABLED, IPDeviceKeys.STUN_SERVER_ADDRESS,
IPDeviceKeys.STUN_SERVER_PORT, IPDeviceKeys.STUN_SERVER_HTTP_PORT,
IPDeviceKeys.STUN_HTTP_USER_NAME,
and IPDeviceKeys.STUN_HTTP_PASSWORD, respectively.
Step 4 Click Add.
You can specify the port and path properties anywhere in the property hierarchy.
Configuring CMHS Connection Request (Use CMHS)
This method allows Cisco BAC to send connection request to CPE devices using the CMHS server, using
BAC NB API Interfaces or BAC Admin UI.