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Outgoing Call

After receiving a valid tunnel definition from AAA, the E-series LNS initiates an outgoing call. The router follows the same load-sharing mechanisms as for incoming calls. See Configuring LAC Tunnel Selection Parameters.

After an outgoing call is successfully signaled, the router dynamically creates a PPP interface. The profile in the dial-out route definition specifies any PPP configuration options. Both the L2TP session and the PPP interface exist on a Tunnel Service module, identical to the LNS operation for incoming calls.

Once the PPP interface is created, Link Control Protocol (LCP) and IPCP are negotiated.

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