Cisco Commands Cheat Sheet
| show running-config | An enable mode command that displays the ... |
| description name-string | A config interface command to describe o ... |
| show running-config interface interface ... | An enable mode command to display the ru ... |
| show ip interface [type number] | Displays the usability status of interfa ... |
What is the Cisco command line?
The line command can configure:
- The router’s console port (CTY)
- The router’s asynchronous ports (TTYs), used for dial-in and dial-out modem connections
- The router’s auxiliary port (AUX), used for backup modem connections
- Telnet, SSH, and rlogin connections to the router (“virtual terminals” or VTYs)
How to view descriptions in Cisco?
Move to global configuration mode, like this:
- router# config t. router (config)#
- router (config)# interface serial 0/0. router (config-if)#
- router (config-if)# description T1 circuit to Internet – Sprint Circuit ID QVX.123.098.765.DAX – Tech Support 800-555-1234.
- router# show run interface serial 0/0.
Where to find a description comment in Cisco?
Cisco Nexus 5000 Series NX-OS Interfaces Command Reference. Usage Guidelines. The description command is meant to provide a reminder in the configuration to describe what certain interfaces are used for. The description appears in the output of the following commands such as show interface and show running-config.. You can use this command on the following interfaces:
What is Cisco command line interface?
IOS supports three different access modes for interaction with CLI:
- User Exec---provides basic access to the IOS which includes monitoring and troubleshooting commands
- Privilege Exec---provides a high-level management access to the IOS,User EXEC mode command can also be used at this mode
- Configuration-----provides commands for configuring device
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How do I show the description on a Cisco switch?
To display summary details of the system interfaces, use the show interface summary command. This command has no arguments or keywords. To display details of the system interfaces, use the show interface command.
What is the benefit of configuring a description on a router interface?
It is good practice to configure a description on each interface. The description text is limited to 240 characters. On production networks, a description can be helpful in troubleshooting by providing information about the type of network to which the interface is connected.
What command can you use on Cisco devices to show interface description?
Use the show interfaces EXEC command to display statistics for all interfaces configured on the router or access server.
What are the basic commands for Cisco switch?
Cisco Commands Cheat SheetBasic Configuration CommandsCommandPurposeinterface fastethernet/numberEnters interface configuration mode for the specified fast ethernet interfacereloadAn exec mode command that reboots a Cisco switch or routerhostname nameSets a host name to the current Cisco network device86 more rows
How do I set description in Cisco interface?
Move to global configuration mode, like this:router# config t. router(config)# ... router(config)# interface serial 0/0. router(config-if)# ... router(config-if)# description T1 circuit to Internet – Sprint Circuit ID QVX.123.098.765.DAX – Tech Support 800-555-1234. ... router# show run interface serial 0/0.
What are the three modes of router configuration?
Here we have to specify the router's interface. Exiting from interface mode to global configuration mode. Exiting from interface mode to privilege mode. Entering into ROMMON mode from privilege mode.
What is sh Run command?
#2: show running-configuration The running-configuration is the config that is in the router's memory. You change this config when you make changes to the router. Keep in mind that config is not saved until you do a copy running-configuration startup-configuration. This command can be abbreviated sh run.
How many Cisco commands are there?
The ballpark figure is 16,794 commands.
What is a Vty line in Cisco switch?
The virtual terminal or “VTY” lines are virtual lines that allow connecting to the device using telnet or Secure Shell (SSH). Cisco devices can have up to 16 VTY lines.
What is default IP of Cisco switch?
192.168.1.254To access the switch by using the web-based interface, you must know the IP address the switch is using. The switch uses the factory default IP address of 192.168. 1.254 by default.
What are basic router commands?
A large number of commands are available on Cisco routers, as well as many different protocols and features that can be used to establish a network....TaskCommandDisable Cisco Discovery Protocol on an interface.no cdp enableEnable Cisco Discovery Protocol on an interface.cdp enable
Where is VLAN setup?
You configure VLANs in vlan global configuration command by entering a VLAN ID. Enter a new VLAN ID to create a VLAN, or enter an existing VLAN ID to modify that VLAN. When you have finished the configuration, you must exit VLAN configuration mode for the configuration to take effect.
What is a purpose of the network command when configuring RIPv2?
What is a purpose of the network command when configuring RIPv2 as the routing protocol? It identifies the interfaces that belong to a specified network. A network administrator configures a static route on the edge router of a network to assign a gateway of last resort.
What are two functions of a router choose two?
What are two functions of a router? (Choose two.)It controls the flow of data via the use of Layer 2 addresses.It provides segmentation at Layer 2.A router connects multiple IP networks.It determines the best path to send packets.It builds a routing table based on ARP requests.
What are two reasons that will prevent two routers from forming an OSPFv2 adjacency choose two?
What are two reasons that will prevent two routers from forming an OSPFv2 adjacency? ( Choose two.)a mismatched Cisco IOS version that is used.mismatched OSPF Hello or Dead timers.mismatched subnet masks on the link interfaces.use of private IP addresses on the link interfaces.More items...•
How do switches and routers work in a network?
While a network switch can connect multiple devices and networks to expand the LAN, a router will allow you to share a single IP address among multiple network devices. In simpler terms, the Ethernet switch creates networks and the router allows for connections between networks.
How to display serial console port on switch?
To display the configuration of the Serial Console port on the controller card of your Server Switch, enter the show interface mgmt-serial command in User Exec mode or Privileged Exec mode.
How to show Ethernet management port on controller card?
To show the configuration of the Ethernet Management port on the controller card of your Server Switch, enter the show interface mgmt-ethernet command in User Exec mode or Privileged Exec mode.
How to display initiator target pairs?
To display initiator-target pairs that you have configured or that your Server Switch has discovered, enter the show fc srp it command in User Exec mode or Privileged Exec mode.
How to view IB agent attributes?
To view the attributes of IB agents for channel adapters on your Server Switch, enter the show ib-agent channel-adapter command in Privileged Exec mode or User Exec mode.
How to show performance monitoring port?
To show the performance monitoring port monitor configuration, enter the show ib pm port monitor command in User Execute mode or Privileged Execute mode.
How to display completed or ongoing diagnostic tests for Ethernet gateway ports?
To display completed or ongoing diagnostic tests for Ethernet gateway ports, enter the show diagnostic interface ethernet command in User Exec mode or Privileged Exec mode.
What is CLI in Cisco?
The Cisco IOS command-line interface (CLI) is the primary user interface used for configuring, monitoring, and maintaining Cisco devices. This user interface allows you to directly and simply execute Cisco IOS commands, whether using a router console or terminal, or using remote access methods.
What is global configuration mode?
Configuration modes, including global configuration mode, allow you to make changes to the running configuration. If you later save the configuration, these commands are stored across router reboots.
How to disable IP routing?
To disable IP routing, use the noiprouting form of the iprouting command. To reenable it, use the plain iprouting form. The Cisco IOS software command reference publications describe the function of the no form of the command whenever a no form is available. Many CLI commands also have a default form.
How to scroll back in command prompt?
You cannot see the first ten characters of the line, but you can scroll back and check the syntax at the beginning of the command. To scroll back, press Ctrl-B or the Left Arrow key repeatedly until you scroll back to the beginning of the command entry, or press Ctrl-A to return directly to the beginning of the line.
What does the symbol by itself mean?
The <cr> symbol by itself indicates there are no more keywords or arguments. Press Enter (or Return) to execute the command.:
What is wildcard mask?
In this output, A.B.C.D indicates that use of a wildcard mask is allowed. The wildcard mask is a method for matching IP addresses or ranges of IP addresses. For example, a wildcard mask of 0.0.0.255 matches any number in the range from 0 to 255 that appears in the fourth octet of an IP address.
What does uppercase letters mean in IP address?
Generally, uppercase letters represent variables (arguments). Enter the IP address followed by a question mark (? ) to list additional options:
What is the correct syntax for showing interfaces?
The correct syntax is "show interfaces description" with an "s", and here you are a couple of documents:
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What is Cisco IOS description command?
What you need to take home from this article is that the Cisco IOS description command can be used on Cisco Routers, Switches, and PIX Firewalls to create custom descriptions for every interface on those devices. These custom descriptions can be used to better document and more quickly troubleshoot your network.
What is a router interface description?
Router interface descriptions are description commands that network administrators configure on each interface of a router. With these commands, the administrator can enter whatever pertinent information he wants to, about that interface. This can be very useful for the original administrator that configured the interface. Or this can be valuable to any other administrator that has to try to troubleshoot or reconfigure the interface later. For example, you could put the following command on your router’s interface:
What is Cisco show command?
There are a few different categories of commands on Cisco devices. There are commands that configure the device to perform a certain function and also there are commands that extract information from the device and the whole network in general. Cisco “ show commands ” belong to the second category above. They are crucial when troubleshooting ...
What is the command show IP?
The command show ip protocols is useful for showing which IP routing protocols are active on the router such as RIP, EIGRP or OSPF.
What is a vlan trunking protocol?
This command shows the status of the Vlan Trunking Protocol which is a method that switches use to sync their Vlan databases. The output from this command shows the following details:
What is the purpose of the Network Time Protocol?
Network Time Protocol is used to automatically synchronize the devices internal clock with an NTP server.
What does the output from this command show?
The output from this command shows information on each link aggregation Channel-Group configured on the switch.
What is the show access list command?
The show access-lists command displays all Access Lists that have been configured on the device. It shows Standard IPv4 access lists first, followed by Extended IPv4 access lists and ending with IPv6 access lists.
What is the show IP route command?
The show ip route command displays the IPv4 routing table containing all of the routes which are known by the router.
