RU31085U1 - MSR-8000 Data Router - Google Patents

Description

MSR-8000 Data Transfer Router

The utility model relates to the field of telecommunication technologies and networks and is intended for use in the delivery of information packets to the destination with maximum efficiency.

A technical solution for packet marfutization is known, which allows direct packet forwarding between interfaces through the use of a common data bus, to which switching controllers connected to random access memory devices and ports of local storage networks are connected to receive information from an Ethernet network, as well as a central processor with memory ( US 5999981 A, H 04 L 12 / 28.07.12.1999).

A feature of the well-known technical solution, in which there is a transfer of data between interfaces, bypassing the central processor, is a high speed of operation, but this architecture is very complex and expensive to implement.

Closest to the proposed is a data router, made with a system data bus, to which

connected, in particular, ports of a local high-speed network for data exchange with an Ethernet network and a global computer network for communication with a satellite, as well as a central processor equipped with random access memory and ports for communication with an operator console and connection of additional peripheral devices (WO 00/25482 A1, H 04 L 12/46, 04/05/2000).

However, the specified device for transmitting information from a satellite uses the MHZ format, which requires the presence of external multiplexing organs. In addition, the known device is not batch - but file-oriented. These circumstances significantly limit the scope and practical use of the known router.

The objective of the utility model is to expand the functionality of such a device while increasing its efficiency, reducing the amount of equipment needed to deliver information via satellite to the user's network.

The problem is solved by optimizing the architecture of the router and software. The device features IP routing and Frame Relay packet data switching. The Frame Relay protocol was used, instead of DVB / MPE, a WAN port with packet switching function was added to support forwarding of non-1P protocols via satellite. The device does not accumulate

information, and immediately transfers it further, according to its settings and the topology of the network in which it is included.

Partial essential features of the utility model also contribute to the solution of the problem.

The port of the local area network, designed for data exchange with the Ethernet network, is made in the form of a physical interface JR-45.

The port of the territorial computer network, designed for data exchange with terminal terminals, is made in the form of a physical interface X.21 or V.35 DTE / DCE,

The global network port for communication with the satellite signal demodulator is made in the form of the F-coimector physical interface.

The ports of the central processor, designed to communicate with the operator’s console and connect additional peripheral devices, are made in the form of physical RS-232 interfaces.

The central processor is equipped with the ability to record events, generate an event log and transfer the contents of the log to the control panel for diagnostics of the router.

The configuration memory block is non-volatile and has a current profile with the current configuration, into which all configuration commands make changes.

The drawing shows a functional diagram of the proposed router.

The router is a standalone device and contains a system bus 1 data, port (LAN Port) 2 local area network, designed to exchange data with an Ethernet network and made in the form of a physical interface RJ-45, port (WAN Port) 3 territorial a computer network designed for data exchange with terminal terminals DTE / DCE and made in the form of a physical interface X.21 or V.35 DTE / DCE, port 4 (WAN RX Port) of a global computer network made in the form of a physical interface F-cormector and intended for communication with dem 5 satellite signals (from the LNB power receiving node in the L-band), a reprogrammable read-only memory device (Flash memory) 6 and a central processor (Central Processor) 7 equipped with random access memory (RAM) 8 and 9DO ports designed to communicate with the Console operator console and connect additional COM2 (future extension) interfaces and made in the form of physical S-232 interfaces. The device also includes a block (Config memory) 11 configuration memory and a clock (Clock) 12.

Port 2 of the local area network, port 3 of the local area network, port are connected to the data system bus 1

4 of the global computer network, a reprogrammable read-only memory 6 and a central processor 7. The configuration memory unit 11 is connected to the central processor 7 to exchange data. The chronizer 12 is connected to the Central processor 7 for the implementation of the timing and synchronization of its component nodes. The Central processor 7 is configured to provide routing traffic with the network IP protocol. Port 4 of the global network is implemented with the open Frame Relay protocol. As arrays of transmitted information used data packets.

As you know, the purpose of routing is to deliver packets to their intended destination with maximization of efficiency, which is expressed as a weighted sum of message delivery times with a lower bound on the probability of delivery. Routing comes down to determining the direction of packets in the router.

The choice of one of the possible directions in the router depends on the current network topology (it can change at least due to the temporary failure of some nodes), the length of the queues at the switching nodes, the intensity of the input flows, etc.

Routing algorithms include the following procedures: measuring and evaluating network parameters, deciding on the distribution of service

information, calculation of routing tables, implementation of routing decisions made.

Technical Data

Console Port

The physical interface is RS-232 DCE.

Baud rate 9600 - 115200 (default) baud transmission format - 8N1 (8 data bits, no parity, 1 table bit)

Ethernet Port Speed - 10 Mbit / s.

Interface - RJ-45, lObase-T, half-duplex (full duplex in the next versions): Indication - Link (green), Activity (red)

WAN Port

Physical interface - X.21 or V.35 DTE / DCE (selectable by cable) Synchronization types - external, internal (independently for reception and transmission) Speed - up to 4 Mbit / s for internal synchronization, up to 12 Mbit / s, for external Internal synchronization - 16,32,48,64,96, 128, 192,256,384,512,768, 1024, 1544,2048,4096 Kbit / s, independently for receiving and transmitting Protocol - Frame Relay.

Demodulator Port

Physical interface - F-connector. The frequency range is 950 - 2050 MHz. Carrier speed - 1-8 megabytes per second. Correction of errors, convolutional - Viteribi 1 / 2,2 / 3,3 / 4,5 / 6,7 / 8. Correction of errors, block - Reed

Solomon DVB-188/204, DSS-147/161. Filir IF-RRC 20% or 35%. Supply voltage for LNB-13.5V, Maximum current consumption for LNB-0.75A. Protocol - Frame Relay.

Function and protocol support

-IP routing,

-Frame Relay switching,

-ARP translation,

-GRE tunneling for IP and Frame Relay,

-UDP / ICMP protocol stack,

-Remote Console / UDP,

-Frame Relay RFC1490 encapsulation,

-TFTP (software update),

-X-modem (software update),

Power Supply voltage - 220V +/- 10% Power consumption - up to 15VA.

Environmental conditions Temperature -O - +40 C Humidity -90%

Zadilya nanel device On the rear panel are:

demodulator input, AN DB-15F port, Console DB-9F port, Status LED (device status, two-color, red-green), Reset button (for

i06

device restart), Link LED (port status, green), Activity LED (traffic on the Ethernet port, red), Ethernet port.

Work with the device

The initial configuration of the device is done from the console port using any terminal program. Terminal settings speed 115200, 8 data bits, parity - none, 1 stop bit. Flow control - off. After turning on the device or pressing the “Reset” button, information on launching the software is displayed on the screen.

Issuing log messages.

After pressing any key, the device will either ask for the user password, or if the password is not set, it will enter the command reception mode.

In the mode of receiving commands, the device displays its name specified in the prompt command, and after the name the sign “if it is in user mode or the sign“ # if it is in administrator mode. If an administrator password is not set, then the device always works in administrator mode instead of user mode.

When entering commands, use the Backspace key to erase erroneously entered characters. To call previously entered commands, you can use the up and down arrows to cycle through the list of commands. Then, if necessary, you can edit the selected command.

The teams are identified by the first two letters, so typing commands is not necessary. Team List

You can see a list of all device commands with a brief explanation of each command by typing help. The following characters are used in the description of the command syntax: - optional parameter, x | y - select one of the values x or y, xy - a digit in the range from x to y, STRING - a string of characters,

IP ADDR - IP address in digital form, for example 192.168.0.1, - network mask in digital form for example 255.255.255.0

In user mode, most commands are not available. Here is the list of commands for admin mode:

interface control

interface ethemetlserial demod tumiel enable disable - Control interfaces

A disabled interface does not receive or transmit packets.

Setting the hardware address of the interface. Agr timeout 30-3600 - AKP table purge interval

The time in seconds after which ARP table entries are forcefully updated.

serial ignore-dcd check-dcd - DCD signal operation

Any of the input and output signals can be inverted.

When choosing the type and speed of synchronization for the receiver and transmitter of the port, any combination is possible. Configuration profiles

The device contains non-volatile (stored when the power is turned off) memory, which stores four configuration profiles, numbered from O to 3. There is also a current profile, which is the actual configuration of the device. It is in this profile that all configuration commands are modified. This profile is not saved when the device is restarted, so in order to make the changes that are not lost, you must copy the current profile to one of the four saved ones. When the device starts, the saved profile O is automatically copied to the current profile. In the future, the user can download or record any of the profiles. Each profile is equipped with a text commentary (up to 20 characters), which is convenient for explaining why this configuration was made. You can load the default configuration into the current profile with the appropriate command. The configuration “is loaded by default even if the loaded profile was distorted in memory (a checksum error occurred). The event log

For diagnosis, you need to know what happened to the device, when and what problems arose. The device captures events, issues messages about them to the console, and writes the time and type of event to the log. The contents of the log are saved when the power is turned off; it can be viewed or deleted by the user. Events marked by the device belong to the following classes: interfaces, demodulator, configuration, control. For each of these classes, you can enable or disable the logging of events (and input to the console, respectively).

The time is counted from the moment you turn on or restart the device.

Indication

The indication of the red and green LEDs located under the reset button is similar to that on conventional network cards and is discussed above. The two-color LED located above the reset button displays the device status by blinking in a certain sequence.

1. Fast (4 times per second) blinking of red and green immediately after switching on means damage to Flash content, and requires Flash firmware via the console port.

2. Slow (1 time per second) blinking green means normal operation of the device.

3. Faster (2 times per second) flashing green means the activity of the remote console.

4. Paired flashing red when the green is off, means that the demodulator is looking for a carrier.

Software Replacement

The MSR-8000 software is stored in non-reprogrammable read-only memory (Flash) with a capacity of 512 kilobytes, which is divided into eight banks, numbered O to 7, 64 kilobytes each.

Bank O always contains a bootloader that allows you to check the status of the Flash memory and, if possible, run the software or download it from your computer using the X-modem file transfer protocol. Other banks may contain different versions of the software.

In addition to the bootloader, there are two other components necessary for the normal functioning of the router - the firmware and the main program.

For operations with software components, the MSR-8000 contains a buffer in RAM. A file up to 64 kilobytes in size can be loaded into this buffer, which can later be written to one of the banks of the Flash memory. Download can be done via TFTP protocol via LAN or satellite, via X-modem protocol from a terminal program through a console port, or from one of the banks

-Y

 f

Flash (for example, to copy the contents of one bank to another). Writing something that is not a bootloader to Bank O, or erasing it and then downloading it, will result in the router not working and require a special recovery procedure, which is possible only by the manufacturer.

Claims (8)

1. A data transfer router comprising a system data bus to which a local area network port is connected for exchanging data with an Ethernet network, a territorial computer network port for exchanging data with terminal terminals, a global network port for communicating with a demodulator satellite signals, reprogrammable read-only memory and central processor equipped with random-access memory and ports designed for I communicate with the operator’s console and connect additional peripheral devices, as well as a configuration memory unit connected to the central processor with the ability to exchange data, and a clock connected to the central processor for clocking and synchronizing its component units, characterized in that the central processor is made with the ability to provide routing of the schedule with the IP network protocol, and the port of the global computer network is made functioning with the open Frame Relay protocol, while m data packets were used as arrays of transmitted information, not files. 2. The router according to claim 1, characterized in that the Frame Relay protocol is used to transmit information via satellite. 3. The router according to claim 1, characterized in that there is a port of the territorial computer network designed for data exchange with terminal terminals, which is made in the form of a physical interface X.21 or V / 35DTE / DTC. 4. The router according to claim 1, characterized in that the ports of the global network are implemented using reprogrammable logic. 5. The router according to claim 1, characterized in that the ports of the central processor, designed to communicate with the operator panel and connect additional peripheral devices, are made in the form of physical RS-232 interfaces. 6. The router according to claim 1, characterized in that the central processor is configured to record events, generate an event log and transmit the contents of the log to the control panel for diagnostics of the router. 7. The router according to claim 1, characterized in that the configuration memory is non-volatile and has a current profile with the current configuration, in which all configuration commands are modified. 8. The router according to claim 1, characterized in that a status LED is inserted into it.