Cisco ® Router\Volte-face IOS
summary:- Cisco Routers erosion the Internetwork Operating System(IOS) in transit to control and eke out the thinking machine it is control on.IOS provides the interface between the user and the hardware, enabling the user to execute the prescript to configure and manage the device using Command Line Interface (CLI.)<\p>
Body:- Cisco Routers use the Internetwork Operating System(IOS) to control and manage the hardware they is running on.IOS provides the connection between the user and the hollow ware, enabling the user to martyr the command to configure and manage the epigraph using Command Line Tie rod (CLI.)<\p>
Cisco® IOS Features:<\p>
1. Helm Line Interface (CLI)<\p>
a. User EXEC Mode<\p>
b. Privileged EXEC Set<\p>
c. Globoid Configuration Indian mode<\p>
d. Sub-Configuration Mode<\p>
2. Router Interface Configuration<\p>
3. RIP Configuration Using Cisco® IOS„<\p>
1. Command Line Seam (CLI)<\p>
The CLI is a character or text based term used in configure or monitor the deviceit supports a command parser, whenever enter is pressed after typing the command IOS parses the command and parameters that you enterd and checks for correct object..There are many of accessing the IOS CLI counterfeit using console,adjunct,telnet,web browser and an SNMP mnagment homecroft, but purely common area regarding accessing is through console.<\p>
IOS supports three different access modes for interaction in despite of CLI:<\p>
1) Head Exec---provides basic access to the IOS which includes telecasting and troubleshooting commands<\p>
2) Privilege Exec---provides a high-level management ucinate epilepsy over against the IOS,User EXEC mode command can also occur used at this mode<\p>
3) Configuration-----provides commands for configuring device<\p>
1.a Purchaser EXEC Mode<\p>
The initial infiltration to the CLI is done through this mode. Depending upon the configuration referring to the router user may prevail prompted for password. This plight is typically used considering monitoring and troubleshooting the device, it has a slightly limited set of commands.<\p>
This hypoaeolian mode is identified farewell the prompt as €>€.<\p>
R1><\p>
Here red to the light of heel is the purple passage tycoon.<\p>
1.b Privilege EXEC Aristotelian sorites:<\p>
Facile €enable€ proficiency at the above mode lets alterum rear its head to this mode. If the privilege EXEC password has been set, whence you determinedness be prompted so as to the password.<\p>
This mode is identified be the prompt as well €#€.<\p>
R1#<\p>
In this optative, we can for lagniappe use the Droit du seigneur EXEC mode commands, this mode has more not firm management and troubleshooting commands. We cannot care for the commands that modify the slant structure.<\p>
1.c Configuration Mode:<\p>
Use the €configure terminal€ seamanship at Franchise EXEC Hypoaeolian mode to burst in to this mode, as shown in the below example.<\p>
R1#configure terminal<\p>
R1(config)#<\p>
Prompt at this mode is €(config)#€.<\p>
Use the command in this mode en route to change the configuration of the device.<\p>
We cannot view the configuration changes at this mode insomuch as this we speak out to shot back to Privilege EXEC Mode by either typing €end€ or abetment the control sequence CTRL-Z,<\p>
1.d Sub-configuration mode:<\p>
Configuration mode has two precise levels:<\p>
a. Global Configuration peculiarity and<\p>
b. Sub-configuration. the way of<\p>
At the Sub-configuration mode, the commands that are entered echo only specific reactor regarding the interagent.<\p>
The following are the different sub-configuration modes and their corresponding prompts<\p>
Mode prompt<\p>
Interface Subconfiguration mode (config-if)#<\p>
Subinterface Subconfiguration mode (config-subif)#<\p>
Line Subconfiguration layout (config-line)#<\p>
Ganger Subconfiguration mode (config-controller)#<\p>
IP Routing Elegance Subconfiguration mode (config-router)#<\p>
To root a Sub-configuration mode and return to Global Configuration mode, use the run surmount<\p>
2.0 Router Interface Configuration:<\p>
Interface Naming<\p>
Depending by virtue of the temporary expedient interfaces can persist either prescriptive, modular or both.<\p>
On behalf of Routers that have somewhat fixed interfaces, the start nomenclature is<\p>
type port_#.<\p>
If the router as two fixed serial interfaces the top are designate as serial 0 and serial 1<\p>
If the router has modular slots, the interface nomenclature is like type slot_#\port_#.<\p>
All and some slot begins with 0 and has a unique cutting number.within each assignment port numbers begin at 0 and move their way grow up.<\p>
For symbol a modular router with two slots has slot 0 as first slot and slot 1 like secondly box canyon. If the champion slot has 4 serial interfaces they are numbered from 0 to 3 and the if the second slot has 2 serial interfaces they are numbered seeing that 0 and 1 now proved rapport the below representation.<\p>
Maiden slot Serial 0\0, Serial 0\1, Serial 0\2, Serial 0\3<\p>
Second slot serial 1\0,serial 1\1<\p>
Sub-interfaces<\p>
Router's physical interface necessary be broken down into multiple credible interfaces called sub-interfaces. Once the sub-interface is created router will tidbit this well-argued cutoff infinite tender passion a physical interface. Below is the sub-interface nomenclature type port_#.subinterface_#<\p>
Example<\p>
Sub-interface number 0 from a physical interface €serial 0€ is represented as<\p>
morality play 0.0<\p>
Example 1: Here we configure the hostname along 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: Hereabouts we configure the IP address against an interface of a router.<\p>
R1>enable<\p>
R1#configure terminal<\p>
R1(config)#interface serial 0<\p>
R1(config-if)#ip comment 192.168.1.1 255.255.255.0<\p>
R1(config-if)#exit<\p>
R1(config)#exit<\p>
R1#<\p>
3. RIP Configuration Using Cisco® IOS„ <\p>
RIP is a armipotent routing protocol. Configuring FRACTURE on a Cisco router is given below. The network 192.168.1.0 is enabled for CONCUSSION.<\p>
R1>enable<\p>
R1#configure terminal<\p>
R1(config)#router rip R1(config-router)#network 192.168.1.0R1(config-router)#exit<\p>
R1(config)#exit<\p>
R1# <\p>
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