Cisco 2500 Series Password Reset

Real World Application:

2500 series router already alarming see in production environments, there are some, however, for over 8 years today and production or more. Cisco 2,500 series routers are the most common use is for training purposes only; commonly used in a lab environment, make great introductory router 2500 series router Cisco IOS (internetwork operating system).

Lab Prerequisites:

A Cisco 2500 Series router that has an unknown console or enable password.

An active Serial Console session to the device that you’re unable to login to.

Lab Instruction:

Like this is Cisco 2,501 router, there is a console password on the device. Use this password, you cannot access the exec mode and not properly authenticating the password. Use when buying a router, you may often have such programmes.

Router con0 is now available

Press RETURN to get started.

User Access Verification

Password:

Step 1 . Power cycle the router or power on the router first. When the router is started, you need to break into network cards PXE boot ROM to boot the router boot sequence, by holding down the CTRL key and press pause break like you. Repeat this operation until you put the network adapter PXE boot ROM prompt.

System Bootstrap, Version 11.0(10c), SOFTWARE
Copyright (c) 1986-1996 by cisco Systems
2500 processor with 14336 Kbytes of main memory

Abort at 0x10B1F3C (PC)
>

Step 2 . When you change the configuration register boot to Cisco IOS router will ignore the contents of the NVRAM. To set the configuration register to 0x2142 and initialize a router (boot to the IOS router).

>o/r 0x2142
>i

Step 4 . (Option 1)-to a Cisco IOS router starts, initial configuration of the system dialog box prompts you, type n and press enter here and you will be placed in user mode. Now you can put your self into privileged mode, enabled by typing. Once in privileged mode, you can copy the startup configuration to the running configuration, and then manually change the password and then save the configuration to NVRAM by typing copy run start.

Step 5 . (Option 2) – to the Cisco IOS router starts, initial system configuration dialog box, you are prompted to, type n and press enter and you will be placed in the user mode. Now you can put your self into privileged mode, enabled by typing. Once in privileged mode, you can clear the contents of the NVRAM by issuing the write erase command.

Router#configure terminal
Router(config)#config-register 0x2102
Router(config)#end

Configuring a GNS3 Ethernet NIO Cloud

Real World Application:

In this lab, you will learn how to find free configurations in the lab of NIO using GNS3 CCNA Binder Ethernet (network input/output).

GNS3 if you are using, and then free CCNA Binder, you will need to connect to the router using your host. Windows XP Professional running on a PC at the same time, can create a binder with GNS3. Although it is possible for other operating systems (such as Windows Vista or Windows 7 running on GNS3, GNS3 compatibility, it is currently recommended for Windows XP on a computer that is running the GNS3.

This lab will show you how to configure an IP connected to the Ethernet interface of the local host for Cisco GNS3 Microsoft loopback interfaces within the device. This simulates a physical connection to the Cisco simulation platform.

You can choose to bind the GNS3 cloud your physical adapter instead of the Microsoft Loopback adaptor; when you use that lets you choose from within your local network you want to connect another device to the GNS3, Cisco device physical adaptors, but connected to GNS3, Cisco devices via the local hosts crash Dynamips Engine possibilities are very high.

Please note that you may have compatibility issues with Windows 7 and Windows Vista 64 bit the loopback interface, it is recommended that a 32-bit operating system.

Lab Objectives:

On Windows XP, install the MS loopback interface

In the newly created the MS Loopback adapter is configured on an IP address.

Creating a cloud in GNS3 interface and bind it to a newly created the MS Loopback adapter.

By assigning an IP address to the same subnet, you assign SW1 MS Loopback adapter to verify your connection. For demonstration purposes laboratory, Binder CCNA devices will use 192.168.255.1-8/24 for free and host is 192.168.255.10/24

• On Windows XP, install the MS loopback interface
• In the newly created the MS Loopback adapter is configured on an IP address.
• Creating a cloud in GNS3 interface and bind it to a newly created the MS Loopback adapter.
• By assigning an IP address to the same subnet, you assign SW1 MS Loopback adapter to verify your connection. For demonstration purposes laboratory, Binder CCNA devices will use 192.168.255.1-8/24 for free and host is 192.168.255.10/24

Lab Instruction:

Step 1 .Navigate to control panel, click Start > or by loading my computer and control panel in the left column "other location", click Control Panel


In Control Panel, double-click "Add Hardware" icon and the Add Hardware Wizard will pop up as shown;

After you click Next, the wizard will automatically search for new hardware; it may take a few minutes;

New Hardware Wizard finished searching and not found, you will be required after the new hardware is connected or not, the bullet is connected hardware, click Next

Sliding to the bottom right of the list to scroll and highlight add a new hardware device, as shown in the following and click Next;

Now, you will not be prompted or you do not want to add new hardware wizard to automatically search for new hardware. Click bullets at the bottom say installing I manually select from a list (Advanced), like this hardware, click Next;

Now give you a different type of list, you can choose to install the hardware. Scroll down the list and select the network adapter as shown below and click Next;

The next window will be displayed on the left hand side and can be used to install manufacturing equipment list on the right side. Some computers may have multiple manufacturing options, if so then select Microsoft made in the list on the left, and then select Microsoft Loopback adapter on the right side of the list, as shown in the following options, and then click Next;

You display the hardware you are trying to install it, as shown below, just click Next and Windows will install the equipment installed before. May pop up a window with a progress bar shows the progress of the installation of device drivers;

Once the Microsoft Loopback Adapter is installed click finish as shown below and restart your computer;

Configuring the Free CCNA Workbook GNS3 Topology

Real World Application:

This lab will teach you how to import free loose-leaf book CCNA Labs GNS3 topology. This is required if you don't set up a physics laboratory for the use of this Web site.


Real-world application but does not apply to this lab in this lab, you will learn how to configure free CCNA Binder GNS3 topology 95% all free CCNA lab found in binder used.

Lab Prerequisites:

Installation of GNS3 and GNS3 environment variable configuration, including the working directory, execution paths, TEMP and IOS image directory path. If you do not have this completed check the basic graphical Network Simulator Lab 1-5-1-6--v3 configuration install a graphical Network Simulator v3
Extraction and c3725 and has in previous laboratory image c3640 platform locations are listed in the Cisco IOS image.

Ensure that importing loose-leaf book free CCNA lab topologies in the stub zone before networking configurations in GNS3 topology and 3,725 platform or the import will fail.

Lab Objectives:

Loose-leaf book downloads and free CCNA lab topology file import.
Successfully started in the lab topology of all routers and the idle PC values for each device.

Familiarize yourself with free CCNA Binder topology view GNS3 topology or by visiting the topology page found in the main navigation bar at the top of the page.

Lab Instruction:


Step 1 . First off you need to make sure that you download the free CCNA Binder GNS3 topology file by clicking the link on the left hand side bar, or by clicking here!

Step 2 . You download a free CCNA Binder after GNS3 topology file, unzip it to your desktop or you save documents to a folder.

Step 3 . By double-clicking on the file load the GNS3 topology, GNS3 should automatically load, and import topology.

Step 4 . GNS3 load and topology after you import, you can then start with R1, right-click, and then click on the start menu. Once you start the device, you can right-click the device and click the console again PuTTY terminal emulation window appears. This will provide you with a console access topology R1.

Upon confirmation, the led on the router to user mode if the system prompts you to type the letter "n" to skip the initial configuration dialog box and wait until you receive a prompt routers >

After you have received a user-mode prompt, you will need to wait about 10 seconds, until the router is idling, then you need to configure the router, with its own idle PC values. Running Dynamips Dynamips is a very processor-intensive applications, and within each of these devices will require an idle PC values, can be applied to the device, therefore, the application can reduce the physical processor load. Please note that an idle PC values are required for each device.

Experiment with your idle PC values, these values are different on a per-machine basis. Be sure to watch your processor utilization when idle PC values to determine which will work best for your machine tested. You can start the Task Manager, when your task bar; click here to view your current processor utilization, then click Properties.

Once success has started all of the devices in the topology, and apply to each device's idle PC values, you should familiarize yourself with the binder CCNA free topology. By clicking the topology of links in the top navigation bar or click here, and you can do it!

Basic GNS3 Configuration

Real World Application:

In this lab you will learn how to configure GNS3 CCNA Cisco equipment for training purposes of the loose-leaf book of basic parameters.


Actually illegal to use in the "production environment" PE se GNS3, it can, but is a great tool for the configuration verification (s) and training. In this binder is to all intents and purposes, you will be using GNS3 and fundamental in learning the ins and outs of Cisco router and switch configuration.

Lab Objectives:

In this lab, you will learn how to configure GNS3 CCNA Cisco equipment for training purposes of the basic parameters of the loose-leaf book.


Actually illegal to use in the "production environment" PE se GNS3, it can, but a great tool to configure verification (s) and training. The programming sequence is to all intents and purposes, you will be using GNS3 and learn the ins and outs of Cisco router and switch configuration.

If you wish to use other images, you will have to manually configure them in the GNSv3 topology.

Lab Instruction:

Step 1. First launch the GNS3 application for the first time and you’ll be prompted by the GNS3 Setup Wizard as shown below;

Step 2 . You need to configure and test the paths and Dynamips (router emulator engine) you can click on the button, the installation wizard prompts, you will be prompted with the following configuration window figure 1 into the working directory. Verify that the path information is correct. But if you want to use SecureCRT on Windows x64, then you will need to change the command string for the Terminal application c:\PROGRA~1\VANDYK~1\SecureCRT\SecureCRT.exe "Terminal settings" tab in GNS3 setup packages include PuTTY/T/N%d/telnet 127.0.0.1%p

Step 3 . Dynamips listed down the left hand side of the Preferences window click on the tab and verify that the path to the executable file and the working directory is correct. Once you are done, click the test button, if all configuration variables are the best button for service you can receive messages, reading; Dynamips started successfully

Loose-leaf book free CCNA Cisco GNS3 topology used and 3,725 router. Before you continue, get the images listed in the prerequisites and open using WinRAR and extract the image to \gns3\images\ to extract images

Step 4 . Can Dynamips started successfully, return to the installation of GNS3 Elves out of GNS3 preferences window. Now, the business variables are correctly configured, you will need to configure your router to use baseline configurations in GNS3. In GNS3 number 2 box, click the installation wizard to launch the IOS image and hypervisor configuration window. You need at least 128 MB RAM configuration and 3,725 platform and platform to point to the correct image is uncompressed, you are placed in \gns3\images\

Please note that the latest free CCNA Binder GNS3 topology needs, change the memory usage of hyper-visor is limited to 2048, you can by clicking on the hyper-visor Organizer tabs when you Dynamips configurations in GNS3 Preferences tab.

Step 5 . Once configured by the two platforms required stub local area network topology (shown below) you can sign out IOS and Super visor GNS3 configuration window and exit the installation wizard, and you are ready to continue to the next lab, will need to import the stub zone networking GNS3 topology configurations.

Configuring a Cisco Access Server

Real World Application:

This lab will teach you how to configure a Cisco access server, can be used to access all of your Cisco lab equipment from a single point of administration.


Often times, companies will use for network access server in a rack of Cisco equipment direct console access, which will allow remote administrators overloaded router and scheduling, and booting into ROM monitor mode check the boot configuration of a remote password recovery, image recovery, and access control lists.

Lab Prerequisites:

• Complete Lab 1.2 before attempting this laboratory or opens the current Cisco access server console session.
• Make sure that the access server asynchronous wires to the venerable device. Example;

Lab Objectives:

• For your preferences, access to the server is assigned a host name.
• Loopback interface is configured to use a reverse Telnet session.
• Correct row inserted into their respective devices configured on the local reverse Telnet to the loopback interface IP hosts. See, for example, the lab prerequisites.
• Prevent asynchronous lines with access to an EXEC session to the server.
• Transport entered in asynchronous online configuring Telnet Protocol.
• Optional – to prevent reverse Telnet session timeout on asynchronous lines.

Lab Instruction:

Step 1 : Assign a Hostname to the Access Server of your preference.

Router>enable

Router#configure terminal

Enter configuration commands, one per   line.  End with CNTL/Z

Router(config)#hostname Access_Server

Access_Server(config)#

Step 2 : Configure a loopback interface for use in reverse telnet sessions.

Access_Server(config)#interface loopback 0

Access_Server(config-if)#ip address 10.10.10.10 255.255.255.255

Access_Server(config-if)#exit

Access_Server(config)#

Step 3 : Configure the local host IP, loopback0 interface and reverse Telnet dear asynchronous line. To view the available line of digital distribution for your platform on the show line command from global configuration.

Access_Server(config)#ip host r1 2001 10.10.10.10

Access_Server(config)#ip host r2 2002 10.10.10.10

Access_Server(config)#ip host r3 2003 10.10.10.10

Access_Server(config)#ip host r4 2004 10.10.10.10

Access_Server(config)#ip host r5 2005 10.10.10.10

Access_Server(config)#ip host r6 2006 10.10.10.10

Access_Server(config)#ip host sw1 2007 10.10.10.10

Access_Server(config)#ip host sw2 2008 10.10.10.10

Access_Server(config)#ip host sw3 2009 10.10.10.10

Step 4 : Prohibit the async lines from establishing an EXEC session with the access server.

Access_Server(config)#line 1 16

Access_Server(config-line)#no exec

Step 5 : Configure the transport input protocol on the async lines to Telnet.

Access_Server(config-line)#transport input telnet

Step 6 : Optional – Prevent reverse telnet sessions on the Async lines from timing-out.

Access_Server(config-line)#exec-timeout 0 0

Access_Server(config-line)#end

Access_Server#

To exit this session use the key stroke combination Ctrl + Shift + 6 then X Executing this key stroke combination will take you back to your Access Servers CLI.

Access Server#r1

Trying r1 (10.10.10.10, 2001)... Open

% Please answer 'yes' or 'no'.

Would you like to enter the initial configuration dialog? [yes/no]:

Access Server#

You will have several commands available for troubleshooting and Diagnostics. As shown in the show hosts command is as follows;

Access_Server#show host

Default domain is not set

Name/address lookup uses domain service

Codes: UN - unknown, EX - expired, OK - OK,   ?? - revalidate

            temp - temporary, perm - permanent

            NA - Not Applicable None - Not defined

Host                    Port       Flags          Age  Type   Address(es)

r1                      2001       (perm, OK)    0        IP      10.10.10.10

r2                      2002       (perm, OK)    0        IP      10.10.10.10

r3                      2003       (perm, OK)    0        IP      10.10.10.10

r4                      2004       (perm, OK)    0        IP      10.10.10.10

r5                      2005       (perm, OK)    0        IP      10.10.10.10

sw1                     2006     (perm, OK)    0        IP      10.10.10.10

sw1                     2007     (perm, OK)    0        IP      10.10.10.10

sw3                     2008     (perm, OK)    0        IP      10.10.10.10

Installing Graphical Network Simulator v3

Real World Application:

GNS3, often used as a training tool for people interested in learning how to configure a Cisco device, or even those who seek to achieve Cisco Career certification. GNS3 for all levels of students ' on my way from the CCNA Cisco CCIE certification training.


GNS3 is a training tool, but in the real world, is to configure the verify command to verify that another major purpose. If you want to know how to set the feature you have, but do not have the router and cannot do it on the router, and then light the GNS3, you are free to configure until your fingers are blue.

Lab Prerequisites:

• Stub Area Networking recommends that your PC has at least a Dual Core processor with 2GB of RAM to run the Stub Area GNS3 topology.
• Stub Area Networking highly recommends that your PC have a Quad Core processor with 4GB of RAM.
• Download the GNS3 (Graphical Network Simulator v3) from the link in the side bar or by clicking HERE

Lab Instruction:

Step 1 . GNS3 all the links you need to download from a package provided in the sidebar, or you can choose to run it by clicking here or download it to a folder, if you want to keep the executable.

Step 2 . After you download, Setup, and then run the Setup, it shows you the installation wizard (shown below). Please note that you will need administrative privileges to install GNS3&WINPCAP (GNS3)

Step 3. After you are presented with the Installation Wizard click next to continue. You are required to agree to and accept the License Agreement for GNS3, if you do not accept this agreement then you must have a physical lab to do the labs found on this website.

Step 4 . After accepting the license agreement will be submitted for your option, rename the default folder name from the GNS3 found on the start menu to whatever you like. If you want to change the name of the folder, and then type it in manually, or you can accept the default "GNS3 ″, and then click Next.

Step 5 . Now provides you with the GNS3 setup packages that are included in this list. WinPCAP is a data capture/analysis GNS3 setup of network monitoring library included with data reported. Dynamips is GNS3; actual GNS3 router Simulator software is a graphical user interface for Dynamips. PemuWrapper is a Cisco PIX hardware emulator that allows you to run PIX Firewall network for GNS3 PIX devices. Can put all these packages are checked, and click Next.

Step 6 . Location of your folder will now be displayed, the installer will install GNS3. In the default case, GNS3 is installed to C:\Program Files\GNS3 if you are running a 64-bit OS and GNS3 is installed to the C:\Program files (x 83) \GNS3

Step 7 . GNS3 Setup will automatically download WinPCAP, and prompts you to install it, as shown below; WinPCAP install ads on the screen, click Next.

Step 8 . Click next on the WinPCAP Installer Welcome Screen.

Step 9 . You must accept the License Agreement for WinPCAP to install the software.

Step 10 . After accepting the License Agreement for WinPCAP, the software will install, click finish afterwards;

Identifying Router Components and Accessories

The early 90 's, modular business network equipment of Cisco equipment on the new policy. In the past, and series router Cisco 2,500, excluding 2524 has fixed port configuration, serial over Ethernet, token ring, ISDN, and terminal line, in such a way that it imposed a limited network of investment protection and scalability of business networks.

Announcement and release of the Cisco 3,600 series routers in 1996, enterprise investment protection that they do not feel relief is by replacing the entire router when you upgrade WAN and LAN link aggregation. Companies can easily from WIC (WAN interface modules) to Exchange migration using ISDN lines to a T1 line, and the LAN ports to upgrade to 10/100Tx and from 10Base-t nm (network module) changes.

Cisco announced in March 1998, 2,600 series routers are Cisco systems, to provide security of engineered wire-speed delivery of new generation multiservice routers also provide voice, data, video and wireless services, the next milestone. However, Cisco 2,600 platforms lacking which upset some network engineers in the industry as a whole it is the PCMCIA Flash card slots in a feature of the Cisco series routers provide 3,600. Engineers familiar with the 3,600 platforms found in the disaster recovery process recovery profiles, as well as the IOS image is simple with PCMCIA Flash memory card changes.

Around the same time as Cisco announced 2,600 series including 3,725 and 3,745-series platform. These platforms is Cisco equipment major stepping stone in architecture, because of platforms introduced removable Compact Flash (CF) memory card used with digital viewfinder. Even today, equipment such as, 2,800 series ISR (integrated services router), ASA 5,500 series firewalls and countless other platforms have been designed to take advantage of Compact Flash card (CF). Speed of the CF card to prove several times faster than previous technologies, using Cisco equipment is more flexible.

In May 2002, Cisco introduced Cisco 2600XM series multi-service router system architecture contains several upgraded features, such as the current Motorola processor, integrated in the revised edition of the 125 MHZ SDRAM 16 MB of Flash memory and 48 MB, maximum Flash and 128 MB RAM support.

Later, version 12.2 (8R) network cards PXE boot ROM, physical 2600XM series multiservice routers supporting 256 MB RAM. However, when first introduced in 12.2 (8R) it only provides "future-ability" using 256 MB of RAM. However in the given Cisco IOS 2600XM that is still limited to 128 MB RAM, 256 MB RAM, and 12.2 (8R) NIC PXE boot ROM network cards are the benefits of starting chips will extract the Cisco IOS image to fail to get IOS kernel address space. Traditionally image becomes greater contraction of processor addressable memory space as images are extracted and loaded into memory after booting (different from the 2500 series, runs directly from Flash) 2600XM platform which gives a significant performance boot-2600XM on platforms. When upgrades are offered, using 256 MB of RAM 2600XM platform gives you additional 50-60 MB or so of extracting image processor addressable memory is not residing in the IOS. If you have 256 MB RAM to run 12.3T on the show memory command, you will see the process should have 128 MB of address space is available. After October 2004 release of IOS version capable of handling a full 256 MB RAM minus uncompressed images.

2600XM also publishes Cisco 2,691 router and it is the fastest platform in the 2600 series. Designed with higher throughput, scalability, and bearing in mind the versatility. Cisco series routers are Cisco 2,691 series router's brother. Side-by-side comparison, they looked very similar however performance and modular design, and the price difference.

1800, 2800, and 3,800 series routers support HWIC (high-speed WAN adapter card), WIC technology previously only supports 8Mbps aggregates each PCI bus supports 400Mbps aggregations (shared across all sockets).

Example; 2600XM series has two integrated WIC slot on the shared bus. 2600XM supports 8Mbps speed runs of individual WIC 2T port port/4Mbps, but due to the shared bus, you cannot use the other WIC slot. This restriction also applies to the NM -1FE2W, NM -1FE1R2W, NM and -2FE2W nm -2W network module.

2,800 series ISR routers (excluding 2801) has four HWIC slots supports 400Mbps aggregations (400Mbps all slots on each chassis) and one or more (enhanced network module) NME slot within the cross-platform shared 1.2Gbps all slots in the business, while its predecessor; network module can only cross-platform shared by all network module slot for up to 600mbps of speed.