USAN _A_d_d_r_e_s_s: National Center for Atmospheric Research USAN Network/Scientific Computing Division 1850 Table Mesa Drive P.O. Box 3000 Boulder, CO 80307 _E-_m_a_i_l: morris@ncar.ucar.edu _P_h_o_n_e: (303) 497-1282 [Don Morris] _D_e_s_c_r_i_p_t_i_o_n USAN (University Satellite Network) is a discipline oriented network serving organizations that do research in the atmos- pheric and oceanographic sciences. Current members are the Universities of Miami, Oregon State, Penn State, Maryland, Wisconsin, and the Institute of Naval Oceanography, the Naval Research Lab, and Woods Hole Oceanographic Institute. The primary use of the network is for access to supercom- puter facilities at NCAR. Secondary use is for access to the Internet via the NSFnet node and other Internet gateways at NCAR. The network is an IP satellite broadcast network with a star configuration with the center at NCAR. Incoming traffic is broadcast at 56Kbits from each node on its own unique chan- nel. Outbound traffic is broadcast at 224Kbits on a single channel. Membership in USAN is not restricted, however members must share in the operating costs for the network. _N_e_t_w_o_r_k _a_c_c_e_s_s Any IP host of any USAN member may access the network. _________________________ The information in this section is provided in accor- dance with the copyright notice appearing at the front of this guide. June 27, 1989 NNSC Section 5.12, Page 1 _W_h_o _C_a_n _U_s_e _t_h_e _N_e_t_w_o_r_k Any of the members can exchange traffic with any other member for any purpose. Any member may use any of the long-haul networks USAN has connections to, subject only to the restrictions of the owner of the long-haul network. Members are free, at this time, to allow transient traffic over USAN through their USAN gateways. _M_i_s_c_e_l_l_a_n_e_o_u_s _I_n_f_o_r_m_a_t_i_o_n USAN is one gateway hop from the NSFnet, Las Alamos National Labs, Westnet east, NASA/Ames, Department of Commerce Boulder Labs, and a consortium of universities in Mexico. June 27, 1989 NNSC Section 5.12, Page 2