Installation step: First, the control port connection first connects one end of the control cable RJ45 in the Cisco2500 / 1000 Series router attachment to the Cisco's console port, CISO7000 / 4000 series routers receive one end of the Modem cable DB25 to Cisco's Console At the mouth, one end of DB9 is connected to the COM1 / 2 of the PC. Set simulation terminal programs on the PC: For example, use the Terminal program in Windows, use COM1 / 2,9600bps, 8 Data Bit, 2Stop Bit. The rest of the default is used. After doing a good control port, open the power switch of the router. In the second step, the initial installation is generally recommended to use the machine installation, so that it is beautiful and maintained. Note: The router must use a power supply with a valid. Generally requiring the voltage of the power supply of the power supply to <4V, zero fire / japonic voltage is 220V. Ground protection basically requires access to the Internet needs to protect the ground, including host, workstation, HUB, exchanger, router, and MODEM connected to the router. Configuring the terminal or PC of the router must also use a power supply with a valid. The synchronous serial interface of Cisco is mostly used, and different interfaces can be drawn through different cables, such as RS232, V.35, and the like. And the cable of the Cisco's synchronous serial interface cable is particularly pre-made. The system will automatically enter Dialog Setup during the first installation. Answer the router name, encrypt the super login password, super login password, remote login password, dynamic routing protocol, configuration of each interface. Then answer Yes to save this configuration. Then wait for 2 minutes, press the number of times. The router name appears. Enter the enable command and answer the super login password. Router name #. Enter the config terminal configuration router: No Service Config No ip Domain-Lookup (further configuration) Press Ctrl-Z to exit and the router name #. Enter Write Memory Save Configuration. The third step, general synchronization dialer, line, DDN connection configuration IPX Routing IPX Routing Interface Serial 0 Interface Serial 0 IP Address 1.1.1.1.0.0.0 IP Address 1.1.1.2. 255.0.0.0 ipx network 111 IPX Network 111 Interface Ethernet 0 Interface Ethernet 0 IP Address 12.1.1.1 255.0.0.0 ipaddress 16.1.1.1 255.0.0.0 IPX Network 123456 IPX Network 987654 Router IGRP 1 Router IGRP 1 Network 1.0.0.0 Network 1.0.0.0 Network 12.0.0.0 Network 16.0.0.0
The fourth step, X.25 connection configuration IP ROUTING IP ROUTING INTERFACE SERIAL 0 INTERFACE SERIAL 0 IP ADDRESS 1.1.1.1 255.0.0.0 IP ADDRESS 1.1.1.2 255.0.0.0 ENCAPSULATION X25 ENCAPSULATION X25 X25 ADDRESS 32699 X25 ADDRESS 32688 X25 HTC 16 X25 HTC 16 X25 IDLE 6 X25 IDLE 6 X25 map ip 1.1.1. 2 32688 broadcast X25 map ip 1.1.1.1 32699 broadcast INTERFACE ETHERNET 0 INTERFACE ETHERNET 0 IP ADDRESS 12.1.1.1 255.0.0.0 IP ADDRESS 16.1.1.1 255.0.0.0 ROUTER IGRP 1 Router IGRP 1 Network 1.0.0.0.com 1.0.0.0 Network 12.0.0.0 Network 16.0.0.0 Maintenance: a . Check the router's cable connection. Connect the control terminal to the router. Under the number of times, the router name appears, and the Status of the first line, LINE and LINE PROTOCOL: if the line is up, the DCD signal indicating the line interface received by the router; otherwise indicates the DCD of the line interface The signal is low. If LINE Protocol is Up, the line protocol that represents the line interface is successful. Otherwise, the line protocol match failed. Inserting Show Interface Ethernet 0 If Line Protocol is Up, indicating that the line interface is connected normally.
B, fault detection and exclusion method communication system may have some faults in operation, how we quickly find the fault, and modify it in time, it is the key to maintaining the normal operation of the system. Here, we have port, line, link, etc. , Provide some reference methods: a Judging the Ethernet Fault: For the diagnosis of the Ethernet Diagnosis, we can use the show interface Ethernet 0 (for the diagnosis of Ethernet port 0), it is used to check the status of a link, as shown below : Router # show int ethernet 0 ethernet 0 is up, line protocol is up * Normal =============== thernet 0 IS UP, LINE Protocol IS UP * Connection Fault, the router is not received LAN on the LAN ====== Ethernet 0 IS UP, LINE PROTOCOL IS DOWN * Interface Fault ====== Ethernet 0 Is Down, Line Protocol Is Down (Disable) * The interface is being turned off ===== Ethernet 0 is Administrative Down, Line Protocol is Down (can go down the shutdown command in interface_mode in the configuration state).
In addition, when we suspect that the port is physically fault, use Shown Version, the physical normal port will be displayed, while the port that occurs the physical failure will not be displayed. b Judging the serial port fault When discovered with the remote communication interruption, we should isolate the fault in the following order: the line --- *} port judgment line is interrupted * DDN line to view the DTU indicator, there are four Indicator: Power, Line, DTR, Ready. The POWER lamp should be long after the DTU is powered on, and the Line, the Ready lamp represents the case where the DTU is connected to the DDN node machine, and the two lamps should also be bright under normal conditions. If you find different, contact the DDN NMS Center in time. The DTR lamp indicates the connection of the DTU and DTE (router). When the router is powered on, if the serial port state is normal, the DTR lamp on the DTU should also keep the bright (when the line does not pass, occasionally flashing). * Analog lines View the indicator on the MODEM, for the synchronous line, in general, CD, TD, and RD should keep the bright, when data is transmitted on a wide area network cable, the TD and RD lights will keep flashing, when these lights When abnormal, contact with the telecommunications department. C Decision Port Fault: For the diagnosis of serial port faults, we can use Show Interface Serial 0 (similar to the diagnostics of serial port 0, diagnostics in other serial ports), which is used to check the status of a link As shown below: Router # show int serial 0 serial 0 is up, line protocol is up * serialt 0 is up, line protocol is up ===== Normal * Serial 0 IS UP, line protocol is down ==== = Portless physical failure, but the upper protocol is not pass (IP, IPX, X25, etc., check the router's configuration command, check if the address is matched). * Serial 0 Is Down, Line Protocol Is Down (Disable): The port is physically fault, and only the port is replaced. * Serial 0 Is Down, Line Protocol Is Down: DCE Device (MODEN / DTU) is not sent to the carrier / clock signal, please contact the telecommunications department. * Serial 0 Is Administrative Down, Line Protocol is down ==== Interface is being shut down, and you can go down the shutdown command in interface_mode in the configuration state. In addition, when we suspect that the port is physically fault, use Shown Version, the physical normal port will be displayed, while the port that occurs the physical failure will not be displayed.
