Interface Serial Cisco

Cisco Learning Network. Below you will find the examples of how to bring up and down an interface on a CISCO switch or router. On the CISCO command-line interface, there is the shutdown interface configuration command to disable an interface and the no shutdown command to enable it. I will show the examples of these commands, as well as how to check an interface status using the show interfaces status command. The default encapsulation type for synchronous serial interfaces on a Cisco device is HDLC. If the default configuration has been changed, you can still modify the encapsulation type of a serial interface with encapsulation hdlc interface configuration command. Router(config)#interface serial 0/0/0 Router(config-if)#encapsulation hdlc. A problem was encountered while retrieving the details. Please try again later.

This tutorial explains basic show commands (such as show ip route, show ip interfaces brief, show version, show flash, show running-config, show startup-config, show controllers, etc.) in Cisco router with examples. Learn how to use show commands in Cisco router to get specific information.

To explain basic router show commands, I will use packet tracer network simulator software. You can use any network simulator software or can use a real Cisco router to follow this guide. There is no difference in output as long as your selected software contains the commands explained in this tutorial.

Create a practice lab as shown in following figure or download this pre-created practice lab and load in packet tracer

If require, you can download the latest as well as earlier version of Packet Tracer from here. Download Packet Tracer

In this practice lab

• RIP Routing protocol is configured on both routers.
• Clock rate and bandwidth is assigned on Router0's serial interface 0/0/0.

Above practice lab is only a recommendation to understand the show commands more clearly, it's not a requirement to follow this tutorial. You can follow this tutorial in a single router or even without router.

Basic Cisco Router Show Commands

Access CLI prompt of router

Use enable command to enter in privilege exec mode. Cisco IOS supports unique context sensitive help features. We can use this features to list all available commands and parameters those are associated with show command.

Enter show command with ? ( Question mark ) to list all available commands

If prompt returns with parameters excluding that means it requires more parameters to complete this command.

If prompt returns with only as option, that means router does not need any additional parameters to complete this command. https://downdfil288.weebly.com/screens-vnc-access-your-computer-from-anywhere-3-6-11.html. You can execute this command in current condition.

Router#show interfaces

This command shows the status and configuration of interfaces. By default it will display all interfaces. But you can limit it to particular interface. To view the detail of specific interface you can use the following command. Vuescan trial.

For example to view the detail of serial 0/0/0 interface on Router0 we will use following command

Output of this command provides several details about interface including its status, encapsulation, interface type, MTU, last input and output packet etc. First line of output shows the status of interface. First up indicates the status of physical layer. Second up refers the data link layer status.

Possible status of physical layer

• UP: - Interface is receiving physical layer signals.
• Down:- Interface is not receiving physical layer signals. This could be happen due to following reasons.
  • Cable is unplugged
  • You are using wrong cable type.
  • Attached device is turned off.
• Administratively down:- Interface is turned off by using shutdown command.

Possible status of data link layer

• UP:- interface is operational.
• Down:- interface is not operational. This could be due to following reasons:-
  • Physical layer is down
  • Incorrect encapsulation setting
  • Incorrect clock rate or bandwidth setting
  • Incorrect keepalives setting

• Second line shows the Hardware type and MAC address of interface.
• Third line shows the IP address of interface.
• MTU indicates the Ethernet frame size.
• BW parameter refers to bandwidth link

Router# show ip interface brief

This command provides a quick overview of all interfaces on the router including their IP addresses and status.

Router#show controllers [type slot_# port_#]

This command is used to check the hardware statistic of interface including clock rate and cable status such as cable is attached or not. One end of serial cable is physically DTE, and other end is DCE. If cable is attached, it will display the type of cable.

Router#show flash

This command will display the content of flash memory, used space and available space. By default router stores IOS image file in flash. We can use this command to check the available space in Flash memory while updating / restoring IOS files.

Router#show version

This command will display information about software version of running IOS. It also provides information about configuration setting. It shows current configuration register setting that is used to reset the password of router.

Router#show startup-config

Routers load configuration from NVRAM in startup. This command will display the configuration stored in NVRAM.

Router#show running-config

Router keeps all running configuration in RAM. This command will display the configuration currently running in RAM.

Router#show clock

This command displays current time on router. https://trueaload351.weebly.com/ffxi-windower-auto-load-addons.html.

Cisco Serial Interface

Router#show hosts

This command displays names and addresses of the hosts on the network that you can connect.

Router#show users

This command displays users currently connected to the router.

Router#show arp

This command displays ARP cache table. Sketch 47 1 dmg mac. ARP table is used to resolve the hardware MAC addresses.

Router#show protocols

This command shows the status of configured layer three protocols on the device.

Router#show history

Basic Cisco Router Show Commands

Access CLI prompt of router

Use enable command to enter in privilege exec mode. Cisco IOS supports unique context sensitive help features. We can use this features to list all available commands and parameters those are associated with show command.

Enter show command with ? ( Question mark ) to list all available commands

If prompt returns with parameters excluding that means it requires more parameters to complete this command.

If prompt returns with only as option, that means router does not need any additional parameters to complete this command. https://downdfil288.weebly.com/screens-vnc-access-your-computer-from-anywhere-3-6-11.html. You can execute this command in current condition.

Router#show interfaces

This command shows the status and configuration of interfaces. By default it will display all interfaces. But you can limit it to particular interface. To view the detail of specific interface you can use the following command. Vuescan trial.

For example to view the detail of serial 0/0/0 interface on Router0 we will use following command

Output of this command provides several details about interface including its status, encapsulation, interface type, MTU, last input and output packet etc. First line of output shows the status of interface. First up indicates the status of physical layer. Second up refers the data link layer status.

Possible status of physical layer

• UP: - Interface is receiving physical layer signals.
• Down:- Interface is not receiving physical layer signals. This could be happen due to following reasons.
  • Cable is unplugged
  • You are using wrong cable type.
  • Attached device is turned off.
• Administratively down:- Interface is turned off by using shutdown command.

Possible status of data link layer

• UP:- interface is operational.
• Down:- interface is not operational. This could be due to following reasons:-
  • Physical layer is down
  • Incorrect encapsulation setting
  • Incorrect clock rate or bandwidth setting
  • Incorrect keepalives setting

• Second line shows the Hardware type and MAC address of interface.
• Third line shows the IP address of interface.
• MTU indicates the Ethernet frame size.
• BW parameter refers to bandwidth link

Router# show ip interface brief

This command provides a quick overview of all interfaces on the router including their IP addresses and status.

Router#show controllers [type slot_# port_#]

This command is used to check the hardware statistic of interface including clock rate and cable status such as cable is attached or not. One end of serial cable is physically DTE, and other end is DCE. If cable is attached, it will display the type of cable.

Router#show flash

This command will display the content of flash memory, used space and available space. By default router stores IOS image file in flash. We can use this command to check the available space in Flash memory while updating / restoring IOS files.

Router#show version

This command will display information about software version of running IOS. It also provides information about configuration setting. It shows current configuration register setting that is used to reset the password of router.

Router#show startup-config

Routers load configuration from NVRAM in startup. This command will display the configuration stored in NVRAM.

Router#show running-config

Router keeps all running configuration in RAM. This command will display the configuration currently running in RAM.

Router#show clock

This command displays current time on router. https://trueaload351.weebly.com/ffxi-windower-auto-load-addons.html.

Cisco Serial Interface

Router#show hosts

This command displays names and addresses of the hosts on the network that you can connect.

Router#show users

This command displays users currently connected to the router.

Router#show arp

This command displays ARP cache table. Sketch 47 1 dmg mac. ARP table is used to resolve the hardware MAC addresses.

Router#show protocols

This command shows the status of configured layer three protocols on the device.

Router#show history

Router keeps a history of used command. This command will list the used command on that level.

Router#show ip route

Routers use routing table to take packet forward decision. This command displays routing table.

Show command supports several other parameters to display command specific information. Due to length of this article we will include them in next articles with their respective topics.

Although Cisco ASAby default ships with a configuration that already includes 2 preconfigured networks, (Outside network and Inside network configured to 192.168.1.0 subnet with configured DHCP server), which provides an easy way for establishing initial connection over Ethernet, there might be times when this method is not suitable. (For example if you have done some configuration mistakes in the past and can't access device via network or have a different network configuration setup).

To connect to Cisco ASA firewall, and setup initial configuration, use a blue serial console cable (sometime refereed as rollover cable with PC Terminal Adapter) that came in the package with your device. Connect the serial port of console cable to your RS232 DB9 serial port on your laptop or PC, and the other end of the cable (RJ45) connect to the console port on the ASA. (The older cables have a grey network to serial converter that plugs on the end.) Best multi track recording software. For connection, use a communication utility – terminal emulation program like HyperTerminal if using Windows, or Minicom if using Linux. Also you can use programs like Putty, TeraTerm or some other application that supports terminal emulation and local serial line connection.

Once initial connection setting on the ASA are successfully configured, protocols such as telnet, SSH, or HTTP(s) web base connection can also be used to connect to device.

For connecting over console port, use this serial line setting on the terminal emulation program:

Console Port Settings

Parameters Value
Baud rate: 9600
Data bits: 8
Parity: None
Stop bits: 1
Flow control: none

USB to Serial Connector

Comic life 3 1 3 download free. If you don't have a serial port on your laptop, you can use a USB-to-serial converter adapter with DB9 at the one and USB connector at the other end of the cable (like the one on the picture below).For this you will have to install driver which adds another COM (serial) port on your PC. This way you will be able to connect to console port from laptop's USB interface. (The driver usually comes in package with USB-to-serial converter, and installation is pretty simple.)

Steps to Connect to Cisco ASA

1.Connect a console port on the Cisco ASA to the serial port on Your laptop/PC with the blue console cable. (If you don't have a console port on your PC, use USB-to-serial adapter connector, see above):

Configure Serial Interface Cisco Packet Tracer

2.Open terminal emulation program like HyperTerminal, TerraTerm or Putty, and onnect to COM serial port on PC (port should be created automatically from the driver):

3. On successful connection You should see ASA command line CLI prompt:

(From CLI You are able to do some basic and advanced ASA firewall configuration.)

ASDM Web Access Guide:
1. On the PC connected to the ASA, launch a web browser.
(Verify that Java and JavaScript are enabled in your web browser)

2. In the Address field, enter the following (default) URL: https://192.168.1.1/admin

3. Run Startup Wizard
(notice that by default username and password are not set so if you are connecting for the first time, leave them empty)

—Reference article from https://www.ittutorials.org/connecting_asa.html

https://bestufil861.weebly.com/mac-app-blocker-v-2-8-1-download-free.html. More Cisco ASA Tips and Guides: