Menu: 0:12 - Devices in GNS3. It can be confusing. What is Dynamips 0:57 - Does GNS3 support switching? 1:17 - Are they real IOS images? 1:47 - Issue 1: Where do I get Cisco images? Cisco restrictions. 2:07 - Issues 2: Only older versions of Cisco IOS are supported on a lot of platforms 2:11 - Is it stable? Issue 3: More memory and processor intensive 2:25 - What is Idle PC Value 4:23 - Advantage 1: Supports serial interfaces 4:50 - Dynamips is a dying product 5:00 - You can run Dynamips locally 5:40 - What does Jeremy recommend we use? 5:50 - Switching in Dynamips? 7:18 - Will Dynamips be removed from GNS3? 7:48 - What is VPCS? 8:28 - What is the advantage of VPCS? 8:55 - Should we be using VPCS? 9:58 - Will VPCS be removed from GNS3? Links: How to download Cisco VIRL images for GNS3: ruclips.net/video/oEP5eXftWJI/видео.html GNS3 Switching options: ruclips.net/video/zYaljXNfBdc/видео.html
Thank you for the video! VIRL is a way to go and so glad frame-relay/serial stuff is going away. In my 6 year career I haven't seen Serial link working or being used anywhere. Seen frame-relay only in some rural areas for very specific communication. Is there any recommended documentation on using Docker? VPCS has been gold to me and I have used virtual box where I needed more features. Virtual Box is by no means lightweight so getting familiar with Docker is something I should definitely prioritize.
Glad to see serial links removed from the CCNA exam :) Here is an example: ruclips.net/video/qsXDZTPnlro/видео.html - you basically just drag something like the Ubuntu Docker container into GNS3 and it auto downloads and installs.
I don't miss David Bombal's update on GNS3 and hos video Tutorials.....I am currently going through Your GNS3 based python and Linux courses, I feel like a God right now showing off with some of the network programability skills I am learning from your course.....What I need right now is a better laptop so that I can lab some other integrated labs that run on Qemu and docker containers.... By the way, I have learnt to create QEMU images from GNS3, extract them through an SFTP client and save them in folders on my hard disk to be used on other Devices running GNS3...I think I should one day demonstrate how one can create this images and keep them so you dont have to always upload iso images and configure appliances when you need to build up your gns3 environment on different System. Thanks again, David!!!!
@@davidbombal Thanks David.....I will find time to share it om GNS3 community. Another thing, Your python video tutprials, how do you advise a networking newbie to python to approach it....Theory first before labbing it or the other way round. . In my case I decided to start with the theory....what do you recommend is the best approach.
@@incrediblestevrhymz2260 In my courses I do the practical demonstrations first. I found this works better as students get the "why" and also get quick wins. Once they are able to automate something they dig deeper into the theory. If you start with theory it is easy to get bored and stop learning.
Great Info, 1 question - prebuilt docker images from gns3/docker container repos are very old and not updated. 2 - any docker vnc or html based no vnc docker container from dockerhub doesnt directly works. 3 - any simple guide modifiy or update those docker container are not provided in gns3 documentation. 4 - improved docker copy and easier option for export of project on gns3 is needed.
Thank you for the comments and questions. Please add this to the conversation in the GNS3 community here: gns3.com/community/discussion/will-dynamips-and-vpcs-be-remove
Hi David first of all I would like to thank you for this video it's very helpful, what I was wondering is that how do you get iosv images from physical devices? Can a device such as a Cisco switch which has IP base software feature have the same functionalities as an iosvl2 image?
This video had a negative marketing feeling to me. Everything said was more or less the truth but it felt like the aim was just to move ppl away from the legacy devices by portraying them as being useless. If Jeremy is going to drop support for Dynamips in future releases then just come out and say it. There is also no need to attack VPCS. As was said, it is simple and lightweight and it does a perfect job of giving me a fast end device to ping and traceroute from. I don't need to dive into docker containers just for that. Don't hide the VPCS just because YOU want ppl to use docker. There are those that already made investments in home labs and have their IOS images available to load up in Dynamips and don't want to pay Cisco more money just to grab a couple VIRL images to use in GNS3. Dynamips works and there are several videos explaining how to use it. Let us decide how we want to use GNS3.
Thanks for the feedback Slick Rick, but I think you misunderstood our intentions. This is about educating the community about recommended solutions and trying to help people avoid having issues. The GNS3 community forums are fill of examples of people struggling with issues because of inherent issues in legacy software and platforms. This is an effort to help guide especially new users on what is recommended and what to avoid. I feel that as someone who helps educate the community, it is a good thing to do. Hence me asking Jeremy a lot of these difficult questions. GNS3 is free software. There is no need to "sell" or market it as there is no cost. However, I think it is a good idea to ask the creator of the software what his thoughts and recommendations are. Jeremy works really hard to help the community, but a lot of people encounter many issues with older software due to bugs and limitations which he can do nothing about. For example, ASA 8 has lots of issues and it is not recommended, but some people still use it. Some use it for multi context support which is missing in ASAv, but it should only be used by more advanced users. Lots of users raise issues in the community about ASA 8 and Dyamips issues such as with the etherswitch module. They complain about the GNS3 product, where the issue is actually the device software rather than GNS3. Again, we are helping guide the community to avoid issues - especially for new users. You mention VPCS, but it has bugs and issues and is no longer developed or supported by it's original creator. It is limited, has bugs, is no longer supported and for new users Docker is a much better choice. The GNS3 core team is very small and does not have the resources to try to help maintain and improve the code of all the vendor appliances. The recommendation is to stop using VPCS. I purposely asked Jeremy for his recommendations as I think he is the best person to ask these types of difficult questions as he is dealing with them daily. In answer to this: "If Jeremy is going to drop support for Dynamips in future releases then just come out and say it." - I think Jeremy would love to remove Dynamips, but has not because users like yourself want to keep it. Jeremy is managing an Open Source project and thus asks for user feedback rather than just making decisions himself. He has the very difficult job of trying to accommodate hundreds of thousands of users all doing interesting things with GNS3. Your feedback here helps with those decisions. I like what Jeremy said - you can use these legacy platforms - but at your own risk and without any support. If you want to continue using older images, then feel free to do that, but be aware of the potential issues and pitfalls. However, new users will not be aware of this and this is an effort to try to help point them in the right direction. To see another perspective of this from Andras - one of the rockstar GNS3 moderators, see what he says here (this is based on him helping many, many GNS3 users and is just his opinion): gns3.com/news/article/please-let-dynamips-go I hope that helps explain the reasoning behind this video and others I will be publishing. Appreciate the feedback :)
@@davidbombal Thanks for the detailed response David. Really appreciate it and it really cleared up a lot of stuff. That being said, I believe how you approached your response to me is how the discussion of the video could have been approached as well - where you identify clear examples of the difficulty behind supporting the legacy technologies. I believe the negative feeling I got came from you helping Jeremy with his answers as well since he was having difficulty translating to English on the spot. No fault of his own but his personal input seemed limited. Personally I think it would have been better if he was given some questions or talking points before hand so he could form his responses and contribute more to the discussion himself. Anyway, I'm still a supporter of your work and Jeremy's because I love GNS3 and recommend it to anyone I know who doesn't use it - even trying to implement it at work right now. Thanks again for taking the time to respond!
Removing Dynamips totally is just plain stupid. For many people buying old router is the only legal way to get IOS image (and run it on Dynamips). If this will be removed, people will simply use pirated VIRL images from warez sites. I hope Dynamips will be available (even if it is not recommended anymore) Similar problem with VPC. Very useful things, especially when you want to share a lab, because they are bulit-in GNS3. I suppose a Core Linux will be used if VPC is killed.
Don't worry, as Jeremy said, neither is not going to be removed anytime soon :) They are not recommended because of their inherent issues, but will be there for those that want to use them.
The self paced courses are basically the same. On my site you get additional content and access to livelabs3 if you are part of the monthly subscription service. I suggest if you are only wanting one course to get it from Udemy. If you want a lot of courses and want access to physical equipment, then get the monthly subscription on my site. I hope that helps.
This doesn't just affect GNS3, but all the virtualization platforms out there (GNS3, EVE-NG and VIRL). This is Cisco specific as other vendors make their software freely available. You can download Arista or Cumulus Linux images for free for example. So, not the fault of GNS3. But, I agree - it is not nice :( Wish it was freely available for all to use. Dynamips is old and is limited compared to VIRL. So, best to use VIRL, but as Jeremy said, GNS3 will most likely keep Dynamips, but make it more hidden.
Menu:
0:12 - Devices in GNS3. It can be confusing. What is Dynamips
0:57 - Does GNS3 support switching?
1:17 - Are they real IOS images?
1:47 - Issue 1: Where do I get Cisco images? Cisco restrictions.
2:07 - Issues 2: Only older versions of Cisco IOS are supported on a lot of platforms
2:11 - Is it stable? Issue 3: More memory and processor intensive
2:25 - What is Idle PC Value
4:23 - Advantage 1: Supports serial interfaces
4:50 - Dynamips is a dying product
5:00 - You can run Dynamips locally
5:40 - What does Jeremy recommend we use?
5:50 - Switching in Dynamips?
7:18 - Will Dynamips be removed from GNS3?
7:48 - What is VPCS?
8:28 - What is the advantage of VPCS?
8:55 - Should we be using VPCS?
9:58 - Will VPCS be removed from GNS3?
Links:
How to download Cisco VIRL images for GNS3: ruclips.net/video/oEP5eXftWJI/видео.html
GNS3 Switching options: ruclips.net/video/zYaljXNfBdc/видео.html
I loved how u helped him out in passing the message 😎
Thanks to both of you gentlemen for always coming up with amazing contents.
Always a learn something new from your channel David. Waiting for the next videos. Thanks!
As usual, another really excellent video. Thanks, David.
God bless you sir D. BOMBAL
Thank you!
Thank you for the video! VIRL is a way to go and so glad frame-relay/serial stuff is going away. In my 6 year career I haven't seen Serial link working or being used anywhere. Seen frame-relay only in some rural areas for very specific communication. Is there any recommended documentation on using Docker? VPCS has been gold to me and I have used virtual box where I needed more features. Virtual Box is by no means lightweight so getting familiar with Docker is something I should definitely prioritize.
Glad to see serial links removed from the CCNA exam :) Here is an example: ruclips.net/video/qsXDZTPnlro/видео.html - you basically just drag something like the Ubuntu Docker container into GNS3 and it auto downloads and installs.
I actually see serials links in the DoD a lot. I love that Cisco is going away from it though.
I don't miss David Bombal's update on GNS3 and hos video Tutorials.....I am currently going through Your GNS3 based python and Linux courses, I feel like a God right now showing off with some of the network programability skills I am learning from your course.....What I need right now is a better laptop so that I can lab some other integrated labs that run on Qemu and docker containers....
By the way, I have learnt to create QEMU images from GNS3, extract them through an SFTP client and save them in folders on my hard disk to be used on other Devices running GNS3...I think I should one day demonstrate how one can create this images and keep them so you dont have to always upload iso images and configure appliances when you need to build up your gns3 environment on different System.
Thanks again, David!!!!
Thank you for the fantastic feedback :) Please do share what you have done on the GNS3 community!
@@davidbombal
Thanks David.....I will find time to share it om GNS3 community.
Another thing, Your python video tutprials, how do you advise a networking newbie to python to approach it....Theory first before labbing it or the other way round. . In my case I decided to start with the theory....what do you recommend is the best approach.
@@incrediblestevrhymz2260 In my courses I do the practical demonstrations first. I found this works better as students get the "why" and also get quick wins. Once they are able to automate something they dig deeper into the theory. If you start with theory it is easy to get bored and stop learning.
Great Info,
1 question - prebuilt docker images from gns3/docker container repos are very old and not updated.
2 - any docker vnc or html based no vnc docker container from dockerhub doesnt directly works.
3 - any simple guide modifiy or update those docker container are not provided in gns3 documentation.
4 - improved docker copy and easier option for export of project on gns3 is needed.
Thank you for the comments and questions. Please add this to the conversation in the GNS3 community here: gns3.com/community/discussion/will-dynamips-and-vpcs-be-remove
the great men DAVID BOMBAL and GEREMY GROSSMAN the founder of GNS3
David Bombal You are best guider for me .From Your Channel Really too much things ..................
thanks to you both
Hi David first of all I would like to thank you for this video it's very helpful, what I was wondering is that how do you get iosv images from physical devices? Can a device such as a Cisco switch which has IP base software feature have the same functionalities as an iosvl2 image?
Great video. Thanks
Hi David , Brought Your GNS3 Certification in udemy . When we can expect gns3 2.2 for Donwload ?
All versions of GNS3 are available here: github.com/GNS3/gns3-gui/releases - 2.2 is still currently at RC3. Should have final release in September.
Hi David
Good morning. Hope you are doing good
Is it any way to add and test Citrix SD-WAN in GNS3. Do we have that option? in GNS3
This video had a negative marketing feeling to me. Everything said was more or less the truth but it felt like the aim was just to move ppl away from the legacy devices by portraying them as being useless. If Jeremy is going to drop support for Dynamips in future releases then just come out and say it.
There is also no need to attack VPCS. As was said, it is simple and lightweight and it does a perfect job of giving me a fast end device to ping and traceroute from. I don't need to dive into docker containers just for that. Don't hide the VPCS just because YOU want ppl to use docker.
There are those that already made investments in home labs and have their IOS images available to load up in Dynamips and don't want to pay Cisco more money just to grab a couple VIRL images to use in GNS3. Dynamips works and there are several videos explaining how to use it. Let us decide how we want to use GNS3.
Thanks for the feedback Slick Rick, but I think you misunderstood our intentions. This is about educating the community about recommended solutions and trying to help people avoid having issues.
The GNS3 community forums are fill of examples of people struggling with issues because of inherent issues in legacy software and platforms. This is an effort to help guide especially new users on what is recommended and what to avoid. I feel that as someone who helps educate the community, it is a good thing to do. Hence me asking Jeremy a lot of these difficult questions.
GNS3 is free software. There is no need to "sell" or market it as there is no cost. However, I think it is a good idea to ask the creator of the software what his thoughts and recommendations are.
Jeremy works really hard to help the community, but a lot of people encounter many issues with older software due to bugs and limitations which he can do nothing about. For example, ASA 8 has lots of issues and it is not recommended, but some people still use it. Some use it for multi context support which is missing in ASAv, but it should only be used by more advanced users. Lots of users raise issues in the community about ASA 8 and Dyamips issues such as with the etherswitch module. They complain about the GNS3 product, where the issue is actually the device software rather than GNS3. Again, we are helping guide the community to avoid issues - especially for new users.
You mention VPCS, but it has bugs and issues and is no longer developed or supported by it's original creator. It is limited, has bugs, is no longer supported and for new users Docker is a much better choice. The GNS3 core team is very small and does not have the resources to try to help maintain and improve the code of all the vendor appliances. The recommendation is to stop using VPCS.
I purposely asked Jeremy for his recommendations as I think he is the best person to ask these types of difficult questions as he is dealing with them daily.
In answer to this: "If Jeremy is going to drop support for Dynamips in future releases then just come out and say it." - I think Jeremy would love to remove Dynamips, but has not because users like yourself want to keep it. Jeremy is managing an Open Source project and thus asks for user feedback rather than just making decisions himself. He has the very difficult job of trying to accommodate hundreds of thousands of users all doing interesting things with GNS3. Your feedback here helps with those decisions.
I like what Jeremy said - you can use these legacy platforms - but at your own risk and without any support. If you want to continue using older images, then feel free to do that, but be aware of the potential issues and pitfalls. However, new users will not be aware of this and this is an effort to try to help point them in the right direction.
To see another perspective of this from Andras - one of the rockstar GNS3 moderators, see what he says here (this is based on him helping many, many GNS3 users and is just his opinion):
gns3.com/news/article/please-let-dynamips-go
I hope that helps explain the reasoning behind this video and others I will be publishing.
Appreciate the feedback :)
@@davidbombal Thanks for the detailed response David. Really appreciate it and it really cleared up a lot of stuff. That being said, I believe how you approached your response to me is how the discussion of the video could have been approached as well - where you identify clear examples of the difficulty behind supporting the legacy technologies.
I believe the negative feeling I got came from you helping Jeremy with his answers as well since he was having difficulty translating to English on the spot. No fault of his own but his personal input seemed limited. Personally I think it would have been better if he was given some questions or talking points before hand so he could form his responses and contribute more to the discussion himself.
Anyway, I'm still a supporter of your work and Jeremy's because I love GNS3 and recommend it to anyone I know who doesn't use it - even trying to implement it at work right now. Thanks again for taking the time to respond!
Dynamips is come to end but we can still use all ios available in vm pro and vm player ??
Hii David
may I know how I am starting my switching practice in gns3..
In this video, Jeremy looks like one of your students 😭😭
Removing Dynamips totally is just plain stupid.
For many people buying old router is the only legal way to get IOS image (and run it on Dynamips).
If this will be removed, people will simply use pirated VIRL images from warez sites.
I hope Dynamips will be available (even if it is not recommended anymore)
Similar problem with VPC. Very useful things, especially when you want to share a lab, because they are bulit-in GNS3. I suppose a Core Linux will be used if VPC is killed.
Don't worry, as Jeremy said, neither is not going to be removed anytime soon :) They are not recommended because of their inherent issues, but will be there for those that want to use them.
Sir , please Tell me want is difference between courses on udemy And courses on your Site ?
The self paced courses are basically the same. On my site you get additional content and access to livelabs3 if you are part of the monthly subscription service. I suggest if you are only wanting one course to get it from Udemy. If you want a lot of courses and want access to physical equipment, then get the monthly subscription on my site. I hope that helps.
@@davidbombal Thank you Sir
DAVID has many experiences
Yes... I am an old guy :)
In this case GNS3 is not more free because yes or yes you have to buy Viral and it´s not cheap :(
This doesn't just affect GNS3, but all the virtualization platforms out there (GNS3, EVE-NG and VIRL). This is Cisco specific as other vendors make their software freely available. You can download Arista or Cumulus Linux images for free for example. So, not the fault of GNS3. But, I agree - it is not nice :( Wish it was freely available for all to use. Dynamips is old and is limited compared to VIRL. So, best to use VIRL, but as Jeremy said, GNS3 will most likely keep Dynamips, but make it more hidden.
I bit the bullet and paid for VIRL. It was well worth the money for the images you get. I use them in GNS3 nearly everyday for my CCNP R&S studies.
Where are you live in?