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Anleitung Zusammenfassung
TFTP uses UDP for connectionless delivery. A TFTP Server is a device on the network which stores files that other IP devices can access for file transfer using the TFTP protocol. The Megabit Modem is one of these IP devices and uses theTFTP server to download updated software in binary format. Typical TFTP servers are not dedicated only for file transfer. Frequently, Microsoft Windows desktops are used to store the binary files. To create a TFTP server, several shareware programs are available through the Internet. Once you have selected and installed the TFTP server software, configure it to share a directory containing the binary files. To configure the Megabit Modem to access the TFTP server, see Chapter 9 on page 77. Megabit Modem 400F, 500L, 600F, and 700F User Manual TFTP Server Megabit Modem 400F, 500L, 600F, and 700F User Manual SPECIFICATIONS AND DATA A WAN INTERFACE SPECIFICATIONS ADSL (Asymmetric Digital Subscriber Line) Maximum transmission rate: Downstream 7.552 Mbps Upstream 928 kbps Minimum transmission rate to sync 64 kbps Rate-adaptive data rate resolution 32 kbps increments Signal Format DMT (Discrete Multitone) line code Connector RJ-11 ATM (Asynchronous Transfer Mode) ATM Adaptation Layer AAL5 (ITU I.363.5) - Supports encapsulation and de-encapsulation of AAL5 Protocol Data Units (PDUs) for convergence. Segmentation and Reassembly (SAR) layer segments and reassembles AAL5 PDUs into ATM cells that are 48 byte SAR-PDUs. ATM Layer Attaches or strips the 5-byte header to the 48-byte SAR-PDU. Performance is a maximum line rate of 17,812 cells per second downstream and 2,189 cells per second upstream. Cell Format Format complies with ITU I.361 ATM cell format. Cell delineation complies with ITU I.432 Cell Delineation and HEC. Cells are fixed length (53 bytes), including 5 bytes of header and 48 bytes of payload. Included in the header are the VPI and VCI number. Virtual Circuit type Permanent Virtual Circuit (PVC) per ATM forum UNI version 3.1 Maximum Virtual Circuits 32 virtual circuits that can simultaneously connect to service providers for sessions encapsulated either as PPP or RFC 1483 Bridging/Routing Megabit Modem 400F, 500L, 600F, and 700F User Manual Encapsulation ENCAPSULATION Selection of an encapsulation protocol from the modem to the service provider occurs on a per virtual circuit (session) basis. For example, for the 700F you can configure 32 sessions for PPP over ATM mode and configure another 32 sessions for RFC 1483 mode. However, you can activate only PPP over ATM sessions or RFC 1483 sessions at a time. You cannot concurrently activate PPP sessions and RFC 1483 sessions for all Megabit Modems. When you activate RFC 1483 system mode, you can select WAN encapsulation as VC-MUX for some sessions and LLC for other sessions. Link Control Protocol (LCP) Network Control Protocol (NCP) Authentication (PAP/CHAP) Network Address Translation PPP Provides a phase of the PPP negotiation by setting up the physical link (RFC 1661). Occurs after LCP, negotiating parameters for each network interface and uses Internet Protocol Control Protocol (IPCP) which is defined in RFC 1332. Provides authentication of PPP sessions for security through Password and Challenge-Handshake Authentication Protocols (RFC 1994). Network Address Port Translation (NAPT) maps LAN side private IP address to the public IP address assigned to the 32 virtual channels (RFC 1631). You can map to two private addresses to each of the 32 sessions for a total of 64 addresses. Routing Routing Protocol Supports RFC 1724 Routing Information Protocol (RIP and RIP Version 2). Encapsulation Supports Logical Link Control (LLC) or VC-based multiplexing (RFC 1483). Static Routes Supports up to 32 static routes Address Resolution Supports Address Resolution Protocol (ARP) over the LAN port (RFC 826) Bridging Bridging and Address Implements a transparent learning bridge with a bridging table of 1024 entries. Learning Encapsulation Supports Logical Link Control (LLC) or VC-based multiplexing (RFC 1483). Spanning Tree Provides Spanning Tree support per IEEE 802.1d. Megabit Modem 400F, 500L, 600F, and 700F User Manual Appendix A: Specifications and Data LAN INTERFACE Connector RJ-45 Ethernet with auto-detecting10/100BASE-T (IEEE 802.3I for 10BASE-T and IEEE 802.3u for 100BASE-T) PHYSICAL SPECIFICATIONS Height 1.2 inches (3.1 cm) Width 6.9 inches (17.5 cm) Depth 9.2 inches (23.4 cm) Weight 2.2 pounds (1.0 kg) POWER SUPPLY Voltage 100 to 240 Vac Frequency 50 to 60 Hz Current 0.3 Amps ENVIRONMENTAL Temperature 32° to 122 °F (0° to 50°C) Relative Humidity up to 95% non-condensing Altitude between -200 and 13,000 feet (-61 to 3.962 meters) Megabit Modem 400F, 500L, 600F, and 700F User Manual Compliance COMPLIANCE Emissions and Immunity • FCC Part 15, Subpart B, Class A Compliance • CENELEC/ETSI (IEC 555 and 801) • CE (EN 55022 and EN 50082-1) Operations and Safety • cUL (UL-1950) Compliances • CE (EN 60950) RFCS • RFC 1483 Multiprotocol Encap...