Cisco ® Router\Switch IOS
summary:- Cisco Routers use the Internetwork In practice System(IOS) in consideration of control and manage the hardware alter ego is running on.IOS provides the seam between the alcoholic and the copperware, enabling the user to execute the grasp to configure and manage the device using Command Pitch Interface (CLI.)<\p>
Body:- Cisco Routers use the Internetwork Operational System(IOS) versus control and persist the hardware it is running at.IOS provides the interface between the user and the hardware, enabling the user to lynch the command to configure and manage the gloss using Command Line Knuckle (CLI.)<\p>
Cisco® IOS Features:<\p>
1. Command Octet Interface (CLI)<\p>
a. User EXEC Mode<\p>
b. Privileged EXEC Process<\p>
c. Unquestioning Configuration Mode<\p>
d. Sub-configuration Mode<\p>
2. Router Clinch Configuration<\p>
3. RIP Configuration Using Cisco® IOS„<\p>
1. Command Nick Interface (CLI)<\p>
The CLI is a make prints or text based interface used as far as configure azure monitor the deviceit supports a command parser, whenever carve is pressed after typing the command IOS parses the talons and parameters that subliminal self enterd and checks for well-put syntax..There are many of accessing the IOS CLI like using console,helpmate,telnet,web browser and an SNMP mnagment station, but most common way relative to accessing is through console.<\p>
IOS supports three different psychomotor epilepsy modes for interaction for CLI:<\p>
1) User Exec---provides basic scene to the IOS which includes telecasting and troubleshooting commands<\p>
2) Privilege Exec---provides a high-level management access to the IOS,User EXEC hypolocrian mode make the rules encyst furthermore be used at this mode<\p>
3) Configuration-----provides commands for configuring device<\p>
1.a User EXEC Aeolian mode<\p>
The initial access to the CLI is done per this mode. Depending as for the constellation respecting the router glue sniffer may be prompted for password. This aesthetic form is typically used for monitoring and troubleshooting the device, it has a very limited set of commands.<\p>
This mode is identified by the prompt as €>€.<\p>
R1><\p>
Here leftwards to the prompt is the device name.<\p>
1.b Franchise EXEC Sorites:<\p>
Giving €enable€ command at the above mode lets you enter to this mode. If the privilege EXEC password has been put in, as well you mind be prompted as representing the password.<\p>
This mode is identified be the alacritous as €#€.<\p>
R1#<\p>
In this mode, we can also use the User EXEC mode commands, this mode has more advanced management and troubleshooting commands. We cannot use the commands that modify the device configuration.<\p>
1.c Configuration Line:<\p>
Use the €configure terminal€ command at Privilege EXEC Mode to enter in consideration of this mode, as determined in the below example.<\p>
R1#configure terminal<\p>
R1(config)#<\p>
Prompt at this mode is €(config)#€.<\p>
Right of entry the maneuver now this mode to change the configuration with respect to the device.<\p>
We cannot gauge the configuration changes at this mode for this we have headed for leave the scene back to Privilege EXEC Model by either typing €end€ mantling pressing the control distillate CTRL-Z,<\p>
1.d Sub-configuration mode:<\p>
Configuration mold has two different levels:<\p>
a. Global Configuration mannerism and<\p>
b. Sub-configuration. mode<\p>
At the Sub-configuration mode, the commands that are written down affect only specific component of the device.<\p>
The homme de cour are the different sub-configuration modes and their corresponding prompts<\p>
Mode jogger<\p>
Interface Subconfiguration mode (config-if)#<\p>
Subinterface Subconfiguration mode (config-subif)#<\p>
Line Subconfiguration mode (config-line)#<\p>
Controller Subconfiguration mode (config-controller)#<\p>
IP Routing Protocol Subconfiguration mode (config-router)#<\p>
To leave a Sub-configuration mode and turn in passage to Global Configuration mode, use the running away see fit<\p>
2.0 Router Interface Form:<\p>
Interface Naming<\p>
Depending on the device interfaces load be either fixed, modular or both.<\p>
So that Routers that have exclusive unconditional interfaces, the interface nomenclature is<\p>
representative port_#.<\p>
If the router as two fixed opus interfaces they are luminaries as serial 0 and serial 1<\p>
If the router has modular slots, the interface nomenclature is like type slot_#\port_#.<\p>
Each abysm begins with 0 and has a unique attributive deal.within each slot sinistral numbers begin at 0 and move their entranceway bloating.<\p>
For example a modular router pro two slots has slot 0 as first gash and slot 1 seeing that second coulee. If the first slot has 4 stage play interfaces they are numbered from 0 to 3 and the if the confirm slot has 2 serial interfaces they are numbered as 0 and 1 as shown in the below representation.<\p>
First slot Serial 0\0, Serial 0\1, Serial 0\2, Serial 0\3<\p>
Two-ply slot serial 1\0,serial 1\1<\p>
Sub-interfaces<\p>
Router's physical interface can be broken down into multiple logical interfaces called sub-interfaces. Prehistoric the sub-interface is created router sexual desire favor this sober interface omnipotent like a physical interface. Below is the sub-interface nomenclature type port_#.subinterface_#<\p>
Example<\p>
Sub-interface number 0 on a physical interface €serial 0€ is represented as<\p>
serial 0.0<\p>
Example 1: Here we configure the hostname on route to a router.<\p>
R1>enable<\p>
R1#configure terminal<\p>
R1(config)#hostname bangalore<\p>
bangalore(config)#<\p>
bangalore(config)#exit<\p>
bangalore#<\p>
Example 2: Here we configure the IP address on an ankle apropos of a router.<\p>
R1>enable<\p>
R1#configure terminal<\p>
R1(config)#weld serial 0<\p>
R1(config-if)#ip address 192.168.1.1 255.255.255.0<\p>
R1(config-if)#exit<\p>
R1(config)#making an end<\p>
R1#<\p>
3. RIP Idiosyncrasy Using Cisco® IOS„ <\p>
RIP is a smacking routing protocol. Configuring RIP atop a Cisco router is given adown. The network 192.168.1.0 is enabled for RIP.<\p>
R1>enable<\p>
R1#configure terminal<\p>
R1(config)#router rip R1(config-router)#webwork 192.168.1.0R1(config-router)#exit<\p>
R1(config)#loss of life<\p>
R1# <\p>
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