miercuri, 9 mai 2012

Cisco ® Router/Switch IOS - Computers - Networks


summary:-Cisco Routers employ the actual Internetwork Operating System(IOS) to manage in addition to cope with this hardware it can be jogging on.IOS presents the interface somewhere between the user and also the hardware, empowering the person to help carry out the actual command to help configure plus take care of that device implementing Command Line Interface (CLI.)

Body:-Cisco Routers develop Internetwork Operating System(IOS) to manipulate and deal with the actual hardware it can be operating on.IOS offers this interface among the consumer and also the hardware, granting the user to be able to perform your command line in order to configure in addition to manage the actual device making use of Command Line Interface (CLI.)

Cisco IOS Features:

1. Command Line Interface (CLI)

a. User EXEC Mode

b. Privileged EXEC Mode

c. Global Configuration Mode

d. Sub-Configuration Mode

2. Router Interface Configuration

3. RIP Configuration Using Cisco IOS

1. Command Line Interface (CLI)

The CLI is definitely a character or copy based program used that will configure or watch your deviceit encourages a control parser, whenever get into can be hard pressed soon after keying your order IOS parses that receive as well as variables which you enterd and determines with regard to correct syntax..There a wide range of of accessing the particular IOS CLI like making use of console,auxiliary,telnet,web cell phone as well as an SNMP mnagment station, although most typical method of opening is through console.

IOS facilitates three various access modes regarding relationships along with CLI:

1) User Exec---provides primary admission to this IOS such as monitoring along with troubleshooting commands

2) Privilege Exec---provides a high-level direction use of the actual IOS,User EXEC style order can also be used at this specific mode

3) Configuration-----provides commands for configuring device

1.a User EXEC Mode

The preliminary obtain towards the CLI is done by way of the following mode. Depending after the particular configuration on the router customer may be prompted to get password. This method is commonly employed with regard to monitoring and troubleshooting the device, it has a very restricted number of commands.

This mode can be diagnosed from the prompt seeing that ">".

R1>

Here left on the prompt may be the device name.

1.b Privilege EXEC Mode:

Giving "enable" control along at the preceding method allows you to input to this mode. If the particular benefit EXEC password have been set, then you'll be prompted with the password.

This mode can be revealed become that quick as "#".

R1#

In this mode, you can easliy as well use the User EXEC function commands, this specific mode includes extra superior management along with troubleshooting commands. We cannot use the commands this modify this apparatus configuration.

1.c Configuration Mode:

Use your "configure terminal" order during Privilege EXEC Mode in order to enter in to the current mode, while established within the actual beneath example.

R1#configure terminal

R1(config)#

Prompt at that function is definitely "(config)#".

Use the command in such a mode that will alter this configuration with the device.

We cannot view your configuration modifications with that function in this we must get back on Privilege EXEC Mode simply by either keying "end" and also annoying the manage pattern CTRL-Z,

1.d Sub-configuration mode:

Configuration style offers two different levels:

a. Global Configuration method and

b. Sub-configuration. mode

At the particular Sub-configuration mode, the commands this are typed in have an impact on only certain component of this device.

The subsequent will be the diverse sub-configuration settings along with their own related prompts

Mode prompt

Interface Subconfiguration mode (config-if)#

Subinterface Subconfiguration method (config-subif)#

Line Subconfiguration setting (config-line)#

Controller Subconfiguration manner (config-controller)#

IP Routing Protocol Subconfiguration mode (config-router)#

To keep some sort of Sub-configuration mode along with come back to Global Configuration mode, make use of the get out of command

2.0 Router Interface Configuration:

Interface Naming

Depending to the unit interfaces can be sometimes fixed, modular or both.

For Routers who have just fixed interfaces, the actual interface nomenclature is

type port_#.

If the router since two predetermined serial interfaces they may be label as serial 0 as well as serial 1

If the actual router includes modular slots, that software nomenclature is usually just like form slot_#/port_#.

Each slot takes place along with 0 as well as has a different slot number.within each one slot opening quantities start out at 0 in addition to transfer his or her method up.

For case a modular router together with two pai gow poker offers slot 0 because first slot and slot 1 while next slot. If the 1st position has some serial interfaces they're just numbered through 0 to help a few and the if your subsequent slot has 2 serial interfaces there're numbered as 0 as well as 1 as established from the beneath representation.

First slotSerial 0/0, Serial 0/1, Serial 0/2, Serial 0/3

Second slotserial 1/0,serial 1/1

Sub-interfaces

Router's actual physical interface could be damaged in to several logical interfaces called sub-interfaces. Once the sub-interface is usually made router will treat this logical interface much like a physical interface. Below will be the sub-interface nomenclature sort port_#.subinterface_#

Example

Sub-interface quantity 0 on the actual physical program "serial 0" can be available as

serial 0.0

Example 1: Here we all configure the hostname with a router.

R1>enable

R1#configure terminal

R1(config)#hostname bangalore

bangalore(config)#

bangalore(config)#exit

bangalore#

Example 2: Here we configure the IP address on an software associated with a new router.

R1>enable

R1#configure terminal

R1(config)#interface serial 0

R1(config-if)#ip handle 192.168.1.1 255.255.255.0

R1(config-if)#exit

R1(config)#exit

R1#

3. RIP Configuration Using Cisco IOS

RIP can be a new active routing protocol. Configuring RIP on the Cisco router is definitely offered below. The multi-level 192.168.1.0 will be made possible pertaining to RIP.

R1>enable

R1#configure terminal

R1(config)#router ripR1(config-router)#network 192.168.1.0R1(config-router)#exit

R1(config)#exit

R1#

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