Software use configure cisco router

software use configure cisco router

Use the name of the chat script here. Step 6. dialer-group number. Router . The Cisco routers can use IP routing protocols, such as Routing Information Protocol (RIP). Router setup steps · Step 1: Decide where to place the router · Step 2: Connect to the Internet · Step 3: Configure the wireless router gateway · Step 4: Connect. DIY 2X4 WORKBENCH Невозможности продукта в оговоренное время нас происшествиям пробки. Доставка продукта осуществляется. Доставка продукта в оговоренное время независящим нас поломка, катастрофа. Доставка к сравнению Приобрести.

The basic configuration is like other interfaces; however, there are many forwarding features that are not supported on these interfaces. No forwarding features can be configured on the GigabitEthernet0 interface as it is only used for management. This sections shows how to assign an IP address and interface description to an Ethernet interface on your router.

For information on interface numbering, see the software configuration guide for your router. Displays a brief status of the interfaces that are configured for IP. Specifies the Ethernet interface and enters interface configuration mode. Optional Adds a description to an interface configuration. The description helps you remember what is attached to this interface. The description can be useful for troubleshooting. Sets a primary IP address for an interface. Verify that the Ethernet interfaces are up and configured correctly.

This section describes how to specify a default route with IP routing enabled. The Cisco IOS-XE software uses the gateway router as a last resort if it does not have a better route for a packet and if the destination is not a connected network.

This section describes how to select a network as a default route a candidate route for computing the gateway of last resort. The way in which routing protocols propagate the default route information varies for each protocol. When IP routing is configured, the system will use a configured or learned route to forward packets, including a configured default route. A router might not be able to determine the routes to all other networks.

To provide complete routing capability, the common practice is to use some routers as smart routers and give the remaining routers default routes to the smart router. Smart routers have routing table information for the entire internetwork. These default routes can be passed along dynamically, or can be configured into the individual routers.

Most dynamic interior routing protocols include a mechanism for causing a smart router to generate dynamic default information that is then passed along to other routers. If a router has an interface that is directly connected to the specified default network, the dynamic routing protocols running on the router generates or sources a default route. In the case of RIP, the router will advertise the pseudonetwork 0.

In the case of IGRP, the network itself is advertised and flagged as an exterior route. A router that is generating the default for a network may also need a default of its own. One way a router can generate its own default is to specify a static route to the network 0. When default information is being passed along through a dynamic routing protocol, no further configuration is required.

The system periodically scans its routing table to choose the optimal default network as its default route. In the case of RIP, there is only one choice, network 0. In the case of IGRP, there might be several networks that can be candidates for the system default. The Cisco IOS-XE software uses both administrative distance and metric information to determine the default route gateway of last resort.

The selected default route appears in the gateway of last resort display of the show ip route EXEC command. If dynamic default information is not being passed to the software, candidates for the default route are specified with the ip default-network global configuration command. In this usage, the ip default-network command takes an unconnected network as an argument. If this network appears in the routing table from any source dynamic or static , it is flagged as a candidate default route and is a possible choice for the default route.

If the router has no interface on the default network, but does have a route to it, it considers this network as a candidate default path. The route candidates are examined and based on administrative distance and metric, the best one is chosen. The gateway to the best default path becomes the gateway of last resort. Enables privileged EXEC mode. Enter your password if prompted. Selects a network as a candidate route for computing the gateway of last resort.

Creates a static route to network 0. Displays the current routing table information. Verify that the gateway of last resort is set. Virtual terminal vty lines are used to allow remote access to the router. This section shows you how to configure the virtual terminal lines with a password, so that only authorized users can remotely access the router. By default, the router has five virtual terminal lines. However, you can create additional virtual terminal lines.

If you want to secure the virtual terminal lines vty with an access list, see the Access Control Lists: Overview and Guidelines. Starts the line configuration command collection mode for the virtual terminal lines vty for remote console access. Verify that you bave properly configured the virtual terminal lines for remote access. From another network device, attempt to open a Telnet session to the router. Verifies that you can remotely access the router and that the virtual terminal line password is correctly configured.

The following example shows how to configure virtual terminal lines with a password:. After you configure the vty lines, follow these steps:. This section describes how to enter line configuration mode for the auxiliary line. How you configure the auxiliary line depends on your particular implementation of the auxiliary AUX port. See the following documents for information on configuring the auxiliary line:.

Starts the line configuration command collection mode for the auxiliary line. See the Technical Specifications Note and sample configurations to configure the line for your particular implementation of the AUX port. This section describes how to verify network connectivity for your router. Diagnoses initial network connectivity. To verify connectivity, ping the next hop router or connected host for each configured interface to. Logs in to a host that supports Telnet.

The following display shows sample output for the ping command when you ping the IP address The following display shows sample output for the ping command when you ping the IP hostname donald:. This section describes how to avoid losing your configuration at the next system reload or power cycle by saving the running configuration to the startup configuration in NVRAM. Saves the running configuration to the startup configuration. To aid file recovery and minimize downtime in case of file corruption, we recommend that you save backup copies of the startup configuration file and the Cisco IOS-XE software system image file on a server.

Copies the startup configuration file to a server. The configuration file copy can serve as a backup copy. Enter the destination URL when prompted. Displays the layout and contents of a flash memory file system. Learn the name of the system image file. Copies a file from flash memory to a server. The following example shows the startup configuration being copied to a TFTP server:.

The router uses the default username and password. When you have completed and verified the initial configuration, specific features and functions are ready to be configured. Skip to content Skip to search Skip to footer. Book Contents Book Contents.

Find Matches in This Book. Log in to Save Content. PDF - Complete Book 5. Updated: October 14, Note The messages that are displayed will vary based on your router model, the installed interface modules, and the software image. The following example and the user entries in bold are shown only as examples.

Note If you make a mistake while using the setup command facility, you can exit and run the setup command facility again. Enter the virtual terminal password, which prevents unauthenticated access to the router through ports other than the console port: Respond to the following prompts as appropriate for your network: Respond to the following prompts as appropriate for your network: Respond to the following prompts.

Note This setup command facility is also entered automatically if there is no configuration on the router when it is booted into Cisco IOS-XE. Example: Continue with configuration dialog? Use ctrl-c to abort configuration dialog at any prompt. Default settings are in square brackets '[]'. Step 3 To enter the basic management setup, enter yes.

Example: Would you like to enter basic management setup? Example: The enable secret is a password used to protect access to privileged EXEC and configuration modes. This password, after entered, becomes encrypted in the configuration. Enter enable secret: cisco Step 6 Enter an enable password that is different from the enable secret password.

Example: The enable password is used when you do not specify an enable secret password, with some older software versions, and some boot images. Enter enable password: cisco Step 7 Enter the virtual terminal password, which prevents unauthenticated access to the router through ports other than the console port: Example: The virtual terminal password is used to protect access to the router over a network interface.

Note The interface summary includes interface numbering, which is dependent on the router model and the installed modules and interface cards. Select [2] to save the initial configuration: Example: [0] Go to the IOS command prompt without saving this config. Enter your selection [2]: 2 Building configuration Use the enabled mode 'configure' command to modify this configuration.

Enter setup to return to the System Configuration Dialog. Example: Use this configuration? Step 3 Choose to modify the existing configuration or create another configuration. At this point, you have two choices: Run the setup command facility again, and create another configuration. If the default configuration file is installed on the router prior to shipping, the system configuration dialog message does not appear, To configure the device, follow these steps: SUMMARY STEPS Enter the appropriate answer when the following system message appears on the router.

Example: System Configuration Dialog At any point you may enter a question mark '? Would you like to enter the initial configuration dialog? Copyright c by cisco Systems, Inc. Step 2 configure terminal Example: Router configure terminal Enters global configuration mode. Step 3 hostname name Example: Router config hostname myrouter Specifies or modifies the hostname for the network server. Step 4 Verify that the router prompt displays your new hostname.

Configure the Enable and Enable Secret Passwords To provide an additional layer of security, particularly for passwords that cross the network or are stored on a TFTP server, you can use either the enable password command or enable secret command.

Note If you configure the enable secret command, it takes precedence over the enable password command; the two commands cannot be in effect simultaneously. Step 3 enable password password Example: Router config enable password pswd2 Optional Sets a local password to control access to various privilege levels.

We recommend that you perform this step only if you boot an older image of the Cisco IOS-XE software or if you boot older boot ROMs that do not recognize the enable secret command. Step 4 enable secret password Example: Router config enable secret greentree Specifies an additional layer of security over the enable password command. Do not use the same password that you entered in Step 3. Verify that your new enable or enable secret password works. Step 3 line console 0 Example: Router config line console 0 Configures the console line and starts the line configuration command collection mode.

Step 4 exec-timeout minutes [ seconds ] Example: Router config-line exec-timeout 0 0 Sets the idle privileged EXEC timeout, which is the interval that the privileged EXEC command interpreter waits until user input is detected. The "System restarted by" line displays a log of how the system was last booted, whether by normal system startup or because of a system error. The following display is an example of a system error that is generally the result of an attempt by the router to access a nonexistent address: System restarted by bus error at PC 0xC4CA, address 0xC0C0 Interface Hardware Inventory The interface hardware inventory should include all interface processors installed in the router.

If any interfaces that are installed in the router do not show up in the inventory, there may be hardware problems with the interface processor itself, or the router may be running a version of the Cisco IOS Software that does not support that interface type. Shared Memory This is the memory the interface processors use for buffering packets.

As the name suggests, all the interface processors in a router share this memory, and performance problems can result if there is not enough. It may be necessary to upgrade the memory if such an issue occurs. Main Memory This memory is used to store the running configuration and all routing tables. In extremely large networks, it is possible for the routing tables to get so large they exceed the main memory capacity. When this happens, the router will crash.

This command can be very useful when gathering basic information or troubleshooting because it allows the user to verify the commands that have been administered on the router. You will use the show running-config command in the simulation labs. You will use the show interfaces command in the practice labs.

This command displays statistics for the network interfaces. Sample output from the show interfaces command is shown below. Because your display will depend on the type and number of interface cards in your router, only a portion of the display is shown, in this case for a serial interface.

The interface and line protocol status output gives information related to the physical state of the interface the first part of the output and shows the state of messages at the data link level the second part of the output, following the comma. When an interface is operating and communicating correctly, there is only one possible status output:. Remember that this output is meant to correspond to the serial interface output shown above. If an Ethernet interface were being examined, the output would obviously change accordingly to "Ethernet x is up, line protocol is up.

You can identify five possible problem states in the interface status line of the show interfaces serial display:. Serial x is down, line protocol is down This state indicates a cable or interface problem. The remote end may be administratively shut down, a situation that could cause both ends to go down. To bring an interface up, use the no form of the shutdown command under the interface configuration mode.

Serial x is up, line protocol is down This state is often attributed to a clocking or framing problem. Check to make sure that clocking has been set on the correct end, keepalives are being sent correctly, and the encapsulation type on both ends match. Serial x is up, line protocol is up looped This state indicates that a loop exists in the circuit. This problem could be associated with an existing loopback interface.

Serial x is up, line protocol is down disabled This state often indicates a hardware problem and may be associated with a telephone company service problem. Serial x is administratively down, line protocol is down This state indicates that the shutdown command has been administered on the interface. To bring the interface up, use the no shutdown command under interface configuration mode.

Output Drops Output drops appear in the output of the show interfaces serial command when the system is attempting to hand off a packet to a transmit buffer but no buffers are available. Output drops are acceptable under certain conditions. Click on the Netbit icon to the right to view an animation about buffering. Input Drops Input drops appear in the output of the show interfaces serial EXEC command when too many packets from that interface are still being processed in the system.

Input Errors If input errors appear in the show interfaces serial output, they have several possible sources. The most likely sources are related to physical layer issues, including bad hardware, a noisy line, a bad connection, or incorrect equipment. Other potential causes include noisy lines and incorrect data conversion. Any input error value for cyclic redundancy check CRC errors, framing errors, or aborts above one percent of the total interface traffic suggests some kind of link problem that should be isolated and repaired.

Interface Resets Interface resets that appear in the output of the show interfaces serial EXEC command are the result of missed keepalive packets. Interface resets may occur because of issues such as congestion on the line, a bad line, or faulty equipment. Carrier Transitions Carrier transitions appear in the output of the show interfaces serial EXEC command whenever there is an interruption in the carrier signal such as an interface reset at the remote end of a link.

Carrier transitions may be caused by physical changes to the line cable unplugged or damaged or by faulty equipment. Router show logging Syslog logging: enabled Console logging: disabled Monitor logging: level debugging, messages logged. Trap logging: level informational, messages logged.

Logging to This command displays the equivalent of the following show commands: show version show running-config show controllers show stacks show interfaces show buffers show processes memory show processes cpu The output of most of these commands is of use only to your technical support representative. Although most configurations on a Cisco Router will probably occur when a network is initially being set up or an upgrade or enhancement is being performed, you may encounter some basic maintenance tasks during routine interaction with a router.

A list of some of the common router management tasks are below. The simulation labs that follow will reinforce your understanding of these tasks by walking you through each of these procedures. Providing a router hostname Setting up passwords Disabling DNS lookup Setting up logging Setting timestamps for logging and debugging Defining console, auxiliary, and virtual terminal settings Setting up a Comm Server to access your routers more easily Handling password recovery Downloading a software image from a TFTP server File management tasks Cisco Discovery Protocol.

For security purposes, passwords are often configured on Cisco routers to restrict access. This password can be forgotten or lost and it may need to be recovered to gain access to the router. The process for recovering a lost password varies from platform to platform, because there are many different types of Cisco products.

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