in CCNA & CCENT
Jan 09, 2015 How to Configure Dynagen and GNS3. Dynamips is a solution which emulates specific Cisco hardware; this is then used in concert with a real Cisco IOS image. These emulations do seem to be the best of the available solutions but there is a catch — technically the use of an IOS image not on a licensed Cisco device is a breach of. Hi, Using any IOS image for use in the GNS3 simulator is illegal and a violation of Cisco terms. @ganeshh.iyer: providing links to and advertising for a 'wares' site which holds illegal copies of IOS images can get you in serious trouble.
Not sure if anyone posted this before...We use this at school alot..http://www.gns3.net/
Taken from gns3.net
What is GNS3 ?
GNS3 is a graphical network simulator that allows you to design complex network topologies and to launch simulations on them.
To allow complete simulations, GNS3 is strongly linked with :
Dynamips, an IOS emulator which allows users to run IOS binary images from Cisco Systems.
Dynagen, a text-based front-end for Dynamips.
GNS3 is a excellent complementary tool to real labs for administrators of Cisco networks or people wanting to pass their CCNA, CCNP, CCIP or CCIE certifications.
It can also be used to experiment features of Cisco IOS or to check configurations that need to be deployed later on real routers.
This project is an open source product that may be used on multiple platforms, including Windows, Linux, and MacOS X.
Features overview
Designing high quality complex network topologies.
Emulating Cisco routers.
Simulating simple Ethernet, ATM and Frame Relay switches.
Load-balancing between multiple hypervisors.
Load and save in Dynagen's INI-like format.
Image export (JPEG, PNG, BMP and XPM).
Important notice: users must provide their own Cisco IOS to use GNS3.
GNS3 is a graphical network simulator that allows you to design complex network topologies and to launch simulations on them.
To allow complete simulations, GNS3 is strongly linked with :
Dynamips, an IOS emulator which allows users to run IOS binary images from Cisco Systems.
Dynagen, a text-based front-end for Dynamips.
GNS3 is a excellent complementary tool to real labs for administrators of Cisco networks or people wanting to pass their CCNA, CCNP, CCIP or CCIE certifications.
It can also be used to experiment features of Cisco IOS or to check configurations that need to be deployed later on real routers.
This project is an open source product that may be used on multiple platforms, including Windows, Linux, and MacOS X.
Features overview
Designing high quality complex network topologies.
Emulating Cisco routers.
Simulating simple Ethernet, ATM and Frame Relay switches.
Load-balancing between multiple hypervisors.
Load and save in Dynagen's INI-like format.
Image export (JPEG, PNG, BMP and XPM).
Important notice: users must provide their own Cisco IOS to use GNS3.
Comments
- That's the first I've heard of it. Thanks for sharing!
They have a number of videos on YouTube: http://youtube.com/watch?v=RtqGaJ_B1Ik&feature=related
Looks really interesting. - GNS was pretty useless a few months ago, is it actually worth using nowadays?
- I tried it out and it is pretty usless I must say. The only thing it is good for is showing you a network diagram. The ghostios feature doesn't seem to function properly either. I usually run eight routers on my laptop. With the GNS3 I could hardley run four with out maxing my RAM (even with the ghostios feature enabled).An expert is a man who has made all the mistakes which can be made.
- Works great for us at school.
If you don't like it sorry to hear that0·Share on FacebookShare on Twitter - Posts: 9Users Awaiting Email Confirmation■□□□□□□□□□Humper, what type of systems/computers is the program running on? Do the computers have 4 gigs of ram? How many devices are running at 1 time?
- Posts: 9Users Awaiting Email Confirmation■□□□□□□□□□Humper, what type of systems/computers is the program running on? Do the computers have 4 gigs of ram? How many devices are running at 1 time?
Downloaded and installed over the top of my existing setup
>
Burning less than 100% CPU
I am still running a whole bunch of other applications here including Mail, Skype, Web Browser and twelve other utilities.
And the memory use is very light
Because I have the
and
enabled the memory footprint is very small.
autostart = False
[localhost:7200]
workingdir = /Users/gregferro/Documents/GNS/BE-WAN-Emulator-V1.1_working
[[7200]]
image = IOS/c7200-ipbasek9-mz.150-1.M1.image
idlepc = 0x60638538
ghostios = True
sparsemem = True
[[ROUTER R0]]
console = 2000
idlepc = 0x61a22c98
cnfg = /Users/gregferro/Documents/GNS/BE-WAN-Emulator-V1.1_configs/R0.cfg
slot1 = PA-2FE-TX
f1/0 = SW0 3
x = -46.0
y = -432.0
[[ROUTER R1]]
console = 2001
cnfg = /Users/gregferro/Documents/GNS/BE-WAN-Emulator-V1.1_configs/R1.cfg
slot1 = PA-2FE-TX
f1/0 = SW1 2
f1/1 = SW0 2
x = -183.0
y = -300.0
[[ROUTER R2]]
console = 2002
cnfg = /Users/gregferro/Documents/GNS/BE-WAN-Emulator-V1.1_configs/R2.cfg
slot1 = PA-2FE-TX
f1/0 = SW6 1
f1/1 = SW0 1
x = 80.0
y = -299.0
[localhost:7202]
workingdir = /Users/gregferro/Documents/GNS/BE-WAN-Emulator-V1.1_working
udp = 10200
[[7200]]
image = IOS/c7200-ipbasek9-mz.150-1.M1.image
idlepc = 0x60638538
ghostios = True
sparsemem = True
[[ROUTER R4]]
console = 2004
cnfg = /Users/gregferro/Documents/GNS/BE-WAN-Emulator-V1.1_configs/R4.cfg
slot1 = PA-2FE-TX
f1/0 = R3 f1/0
f1/1 = SW2 1
slot2 = PA-2FE-TX
f2/0 = SW7 1
x = -70.0
y = -56.0
[[ROUTER R5]]
console = 2005
cnfg = /Users/gregferro/Documents/GNS/BE-WAN-Emulator-V1.1_configs/R5.cfg
slot1 = PA-2FE-TX
f1/0 = SW2 2
f1/1 = SW3 2
x = -221.0
y = 57.0
[localhost:7204]
workingdir = /Users/gregferro/Documents/GNS/BE-WAN-Emulator-V1.1_working
udp = 10300
[[7200]]
image = IOS/c7200-ipbasek9-mz.150-1.M1.image
idlepc = 0x60638538
ghostios = True
sparsemem = True
[[ROUTER R6]]
console = 2006
cnfg = /Users/gregferro/Documents/GNS/BE-WAN-Emulator-V1.1_configs/R6.cfg
slot1 = PA-2FE-TX
f1/0 = SW7 2
f1/1 = SW4 2
x = 119.0
y = 56.0
[[ROUTER R7]]
console = 2007
cnfg = /Users/gregferro/Documents/GNS/BE-WAN-Emulator-V1.1_configs/R7.cfg
slot1 = PA-2FE-TX
f1/0 = SW3 1
f1/1 = SW4 3
slot2 = PA-2FE-TX
f2/0 = SW5 3
x = -230.0
y = 255.0
[[ETHSW SW3]]
1 = access 1
2 = access 1
3 = access 1
x = -183.5
y = 161.0
[[ETHSW SW2]]
1 = access 1
2 = access 1
x = -178.5
y = -29.0
[[ETHSW SW7]]
1 = access 1
2 = access 1
x = 48.5
y = -24.0
[localhost:7206]
workingdir = /Users/gregferro/Documents/GNS/BE-WAN-Emulator-V1.1_working
udp = 10400
[[7200]]
image = IOS/c7200-ipbasek9-mz.150-1.M1.image
idlepc = 0x60638538
ghostios = True
sparsemem = True
[[ROUTER R3]]
console = 2003
cnfg = /Users/gregferro/Documents/GNS/BE-WAN-Emulator-V1.1_configs/R3.cfg
slot1 = PA-2FE-TX
f1/0 = R4 f1/0
f1/1 = SW1 3
slot2 = PA-2FE-TX
f2/0 = SW6 2
x = -69.0
y = -160.0
[[ROUTER R8]]
console = 2008
cnfg = /Users/gregferro/Documents/GNS/BE-WAN-Emulator-V1.1_configs/R8.cfg
f0/0 = SW4 1
slot1 = PA-2FE-TX
f1/0 = SW5 2
f1/1 = SW3 3
x = 108.0
y = 260.0
[[ROUTER R9]]
console = 2009
cnfg = /Users/gregferro/Documents/GNS/BE-WAN-Emulator-V1.1_configs/R9.cfg
slot1 = PA-2FE-TX
f1/0 = SW5 1
x = -53.0
y = 377.0
[[ETHSW SW1]]
2 = access 1
3 = access 1
x = -194.5
y = -186.0
[[ETHSW SW0]]
1 = access 1
2 = access 1
3 = access 1
x = -50.5
y = -321.0
[[ETHSW SW5]]
1 = access 1
2 = access 1
3 = access 1
x = -55.5
y = 316.0
[[ETHSW SW4]]
1 = access 1
2 = access 1
3 = access 1
x = 67.5
y = 168.0
[[ETHSW SW6]]
1 = access 1
2 = access 1
x = 69.5
y = -192.0
[GNS3-DATA]
configs = BE-WAN-Emulator-V1.1_configs
workdir = BE-WAN-Emulator-V1.1_working