Network Working Group                                        W. Townsley Request for Comments: 2661                                   A. Valencia Category: Standards Track                                  cisco Systems                                                                A. Rubens                                                    Ascend Communications                                                                  G. Pall                                                                  G. Zorn                                                    Microsoft Corporation                                                                B. Palter                                                         Redback Networks                                                              August 1999 … Читать далее RFC 2661 Layer Two Tunneling Protocol “L2TP”