Recent Articles

DeadWait: Dynataz is Live - The Hybrid of Dynamips & Dynagen on a Live CD

Written by LBSources from http://www.gns3-labs.com on August 7th, 2008 | 0 Comments

So it seems that Dead Wait has found a new distribution even smaller than Slack and approximately 30MB in size. He’s dubbed it DynaTaz, based off of the Slitaz linux distro

SliTaz is a free micro GNU/Linux distro using BusyBox, a Linux kernel, and GNU free software. The goal of SliTaz is to have a GNU/Linux distro working in memory (RAM). Installable to a hard disk, with good support for French language web, it offers reliability, high performance and PC recycling. SliTaz boots with Syslinux and provides more than 200 Linux commands, the LightTPD web server, SQLite database, rescue tools, IRC client, SSH client/server powered by Dropbear, X window system, JWM (Joe’s Window Manager), gFTP, Geany IDE, Mozilla Firefox, Alsaplayer, Gparted, a sound file editor and much more. SliTaz’s ISO image will always fit on less than 30 MB, and try and give you a reasonable selection of software.

He’s also moved his site to a new domain. Catch up with him if you’re out of the loop. In da Wok

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GNS3 Tutorials: BlindHog - How to build a switching lab Part 2

Written by LBSources from http://www.gns3-labs.com on July 29th, 2008 | 0 Comments

So Josh (BlindHog) came around with part 2 pretty quick.

As per the his blog

This is part two of my gns3 switching tutorial series. In part 1, you learned how to use a 16 port network module (NM-16ESW) to simulate many features of a Cisco switch. In this tutorial, you will learn how to configure vlans on the switch and how to route between vlans with a ‘router on a stick’ configuration.

This ‘router on a stick’ tutorial is only one example of the many labs that can be created using the NM-16ESW module.

GNS3 - Switching lab part 2 (router on a stick)
Reference:GNS3 - How to build a switching lab Part 1

You can also find a full blown VLAN, 802.1q lab in action @ GNS3-Labs:: Topology: VLAN Trunking GNS3 Lab - 802.1Q - Router On A Stick

Enjoy

LB

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GNS3 Tutorials: BlindHog - How to build a switching lab

Written by LBSources from http://www.gns3-labs.com on July 25th, 2008 | 0 Comments

In case you have had a look at our Topology: VLAN Trunking GNS3 Lab - 802.1Q - Router On A Stick & need some help with configurations have a look over at BlindHog.

As per BlindHog:

In this tutorial, you will learn how to build a Cisco switching lab … even though GNS3 cannot emulate a Cisco switch. I will show you how to use an NM-16ESW network module in a 3640 router to emulate a switching environment.

This tutorial is actually part one in a two part series. Part 2 will show you how to configure a “router on a stick”. A router on a stick is basically when a router is configured to route between two vlans with a single physical connection to the switch.

BlindHog - How to build a switching lab

Enjoy..

LBS

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GNS3 Announcement: Status of GNS3 - New GNS3 Wiki Site

Written by LBSources from http://www.gns3-labs.com on July 12th, 2008 | 2 Comments

Like many we have all been wondering whats going on with GNS3 DEV and like many other OpenSource and FREE applications you run into time commitments. I wish Jeremy and Xavier some restful days while still trying to live life, work and develop GNS3.

They have though extended the opportunuty for users to help keep the motion by sharing topologies and contrubuting to the Wiki which has it’s pros and cons.

Regardless the wheel has not stopped spinning! Great to hear so Jeremy..

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Topology: Configuring BGP with Default Routing Lab 6-1

Written by LBSources from http://www.gns3-labs.com on July 12th, 2008 | 0 Comments

Hey folks it seems we have a helper who is willing to share labs with us all! His name is Amir Hussain and he will be sharing his labs based on the BSCI v50 Lab Guide by Cisco.

You too can share your labs and co-admin this site by shooting me an email at postmy [AT] gns3-labs [DOT] com

Ok onto the lab..

BSCI v 50 Lab Guide by Cisco

Lab 6-1 Configuring BGP with Default Routing

Learning Objective
In this lab, you will configure BGP to exchange routing information with two
Internet Service Providers (ISPs).

Scenario
The International Travel Agency relies extensively on the Internet for sales. The
company has contracted with two ISPs for Internet connectivity with fault
tolerance. You need to configure BGP, which runs between the San Jose
boundary router and the two ISP routers.

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Video: Configure SDM in GNS3

Written by LBSources from http://www.gns3-labs.com on July 10th, 2008 | 1 Comment

I found this video yesterday and thought it would be great share. I ran into this accidentally so I dont know who the author is.

After extracting this you will notice the file is an EXE. Seems this is the type of format the author used to record the video.. Don’t worry it’s safe, I checked it out :)
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Topology: MPLS VPNs with MPLS-TE Instead of LDP - OSPF Routing Protocols

Written by LBSources from http://www.gns3-labs.com on July 10th, 2008 | 1 Comment

Based on his 2.0 lab, this is v2.5 by the famous Justine White over at Hacki.AT. I will also put toghether the 3.0 lab also. This is a very high CPU intense lab so be warned. I used 3640 routers to minimize the resource taxing.

As per the Justin in the original thread > MPLS VPNs v2.5 with MPLS-TE Instead of LDP

Here’s the version 2.5 of my MPLS lab updated to use MPLS-TE instead of LDP for distribution of labels. There aren’t any other changes over version 2, so the diagrams should be identical. Remember that this version consists of a 6-node MPLS network with a pair of P-core routers that also act as route-reflectors for the PE routers.

MPLS Read
MPLS-TE Read
Border Gateway Protocol
Multi Protocol Label Switching Using Label Distribution Protocol
Multi Protocol Label Switching VPN
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Topology: DUAL DMVPN- Dynamic Multipoint VPN Over Frame-Relay Using EIGRP

Written by LBSources from http://www.gns3-labs.com on July 9th, 2008 | 0 Comments

This is a DMVPN lab taken from this thread. The author of the post pitched a scenario by which he wanted folks to submit their work showing their attempt at it.

This is the scenario…..

DUAL HUB DMVPN Challenge:

A customer has hired you to configure 4 routers for them. Their requirements are listed below, keep in mind that this is only the start and many more routers will follow as the company begins to expandEquipment Needed:

4 routers (IOS must be at minimum 12.3 and support cryptographic services)
1 FastEthernet
1 Serial Interface
1 FRS
1 LAN device

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BlindHog: Saving GNS3 Labs Including Router Configs

Written by LBSources from http://www.gns3-labs.com on July 8th, 2008 | 1 Comment

 We have all experienced a time when working in GNS3 and we _think_ we saved the the topology and router configurations. So you open GNS3 and load that config, start them routers, watch them boot all the way to the painful promt

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

And your hard work is GONE!

Well my buddy Josh blogged about the 1st thing we should all do when starting a new lab.

GNS3 - How to save labs with router configs



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