CISCO

Reset Cisco Router password

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Reset Cisco Router password:

Today i will discuss how to reset Cisco Router password. so follow bellow steps………..

[boxads]

Step-1.  Reboot your router first, when it rebooting attempt to break into ROM Monitor (ROMmon) by issuing the break sequence (usually Ctrl and break from the Hyperterminal) from a console connection. Refer to: Cisco Standard Break Key Combinations You should see this ROMmon prompt:

rommon 1>

Step-2.  Change the configure register value to ignore the startup configuration by issuing the confreg command, as shown in this example:

rommon 1> confreg 0x2142

Step-3.  To reload the router, issue the reset command, as shown in this example:

rommon 2> reset

Reset Cisco Router password
Reset Cisco Router password

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Cisco Router factory-default

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Cisco Router factory-default:

Today i will discuss how to do Cisco Router factory-default or initial configuration mode. we configure it two way, “Erase nvram“ and “erase startup-config”, So lets follow bellow procedure………..[boxads]

#.To erase the configuration file, use erase nvram: command.

Router> en
Router#erase nvram:

Reload the router by reload command.

Router# reload

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How to Reset a Cisco Switch to Factory Default

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How to Reset a Cisco Switch to Factory Default

Are you find cisco switch factory default command?

Don’t worry please follow bellow step. [boxads]

To delete total configuration from switch:

Erase startup-config:

Example:
Switch#erase startup-config
Erasing the nvram filesystem will remove all configuration files! Continue? [confirm]
[OK]
Erase of nvram: complete
Switch#reload

To delete All VLAN from switch:

Enter the following commands in the privileged mode:

Delete flash:vlan.dat:

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VLAN Based Traffic Shaping Cisco Switch

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VLAN Based Traffic Shaping:

Today i will discuss how to configure VLAN based traffic shaping on cisco Catalyst ME3400 switch. Suppose you have 4 vlan [21,22,23,24] on a trunk port & you want to bandwidth shaping specific vlan 21 & 22. Here we declare 5Mbps BW for Vlan 21 & 2Mbps BW for Vlan 22. [boxads]

You can enable bandwidth shaping on an interface (or sub-interface) in three easy steps. Just remember: class, policy & interface.

Class:

At first you need to create a class map for those Vlan. Here we create vlan21 & vlan22 as a class map.

class-map match-all vlan21
 match vlan  21
class-map match-all vlan22
 match vlan  22

policy:

Now it’s time to define our policy map. In this case, we’re going to take any traffic that matched the vlan21 & vlan22 class (which, as you remember, is all traffic) and apply a shaping policy to it. Also we create subvlan & mainvlan policy map.

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Configure bandwidth limit cisco switch

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How to Configure bandwidth limit cisco switch / bind switch port bandwidth

Today i will discuss how to configure bandwidth limit cisco switch port. At first create policy map then apply it into port which port you bind specific bandwidth. In this case i will show you how to configure 1 MB Bandwidth limit in a switch port.[boxads]

Go to config mode by: conf t command then follow bellow command.

Policy Map for Input traffic:

policy-map 1MBps
class class-default
police cir 1048576 bc 1000000
conform-action transmit
exceed-action drop

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Cisco Switch Security Configuration

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Cisco Switch Security Configuration

For security reason one password is used for the enable password and the other will later be assigned to the console port. [boxads]

SWITCH(config)#enable secret  [password]

SWITCH(config)#username admin password [password]

A password should be required to access the console line.  Even the basic user EXEC mode can provide significant information to a malicious user. In addition, the VTY lines must have a password before users can access the switch remotely.

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