In this mode, a LAC client needs a public network address to communicate with the LNS
through the Internet.
Figure 4-5 Client-initiated tunneling mode
L2TP tunnel establishment process
Figure 4-6
shows a typical L2TP network.
Figure 4-6 Typical L2TP network
Figure 4-7
depicts the setup procedure of an L2TP call in NAS-initiated mode.
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