My name is Chris Welsh and I am a professional computer networking instructor – Cisco, TCP/IP, VoIP – ie general networking technologies.
The RedNectar tag has some history. Some Australians who went to school between 1983 and 1988 might remember the Aussie MicroBee computer. Or “the Bee” as we affectionately called it.
I wrote some software for the Bee – and marketed it through my company name “Nectar Software” (Nectar for the Bee of course).
I don’t do software any more, but my company has kept the Nectar in the form of “Nectar Network Knowledge”. http://www.nnk.com.au
When looking for a username one day, I tried “nectar”. The response I got was that “nectar was too short. Why not try blue_nectar or nectar_123?” I thought about that, and decided that RED_Nectar had a much better ring to it than blue_nectar, so now I use the RedNectar tag (or a variation thereof) wherever I can – including this site. You can follow me on twitter @rednectarchris and blame me for any wikipedia edits by Rednectar.chris. You can also find me on Google+.
Mohammed – I’d love to help but after spending 10mins trying to draw a diagram of what you have I gave up. Sorry.
Thanks alot, Mr. Chris, I really appreciate ur care, the thing was I had 2 optical fiber megaplexes ( a device like the optimux as a think). The input to the megaplex could be pbx lines or data lines of rj-45, and the output is optical fiber line, that optical fiber is received by another megaplex that converts data travelling along that optical fiber cable to the original pbx and data lines again. that megaplex device uses TDMA. to send multiple data lines through the megaplex a hub is used for sure, with that megaplex connected to one of the hub ports as the other data lines connected to the hub as well. in my case there were one data line to be sent, so I connected that data line directly to the UTP port of the megaplex without using the hub,,, so no connection established !!
the data line I tried to connect to the megaplex,, was a connection to a PC uses the old 3com Etherlink xl LAN card,, when tried to connect another PC instead of that old one, the connection was successful,,, well, at ;last; I put the hub in between the old PC and megaplex,,, and the connection was OK then !! I just went to the conclusion that 3com old LAN can’t get connected to a megaplex directly !!!!!!!!!!!!!!
but, thank you, sir, for time and care, I really appreciated
Hi, Red, I just wanna to ask a question, I have a windows NT 4.0 PC, used to monitor a system 2 km away, and so, I got that PC’s NIC connected to a TDMA megaplex, by an ordinary straight RJ45 and by turn the megaplex outputs the data after gettn TDMAed through an optical fiber to an identical megaplex in that remote station which is connected, I mean the megaplex, to an internal LAN containing an identical windows NT PC, that LAN I have mentioned is an old token ring network with a hub as a member, from that hub an RJ cable connected to the megaplex of the station, well, I couldn’t ping the station, I mean that PC of the remote station, through my monitor PC !! but,when I replaced that monitor PC with my win7 laptop I was able to ping the station,, I tried to ping my monitor winNT PC with my laptop, through a cross over cable, I was able to get replies,, but when pinged the laptop using the monitor PC I got my requests time outed !!!! I don’t know how can a PC ping another one, but that other one can’t ping that PC
”’ the problem is not just pinging but that the software of the monitor PC can’t then connect to the station,,, please help, I wanna that monitor PC sees the station !!
Hi Chris, I just wanted to say thank you for putting together this bundled vm. It’s fantastic to have everything in one place, nicely organized and simple to use. Beats my old rack full of test routers any day!
Thanks. Most of the magic and kudos goes to the GNS3 developers, and of course Chris Filot who gave us dynamips
I did try downloading the vmdk files, converted to ‘ovf’ and then ran under virtualbox. No qemu binary anywhere, pix images don’t work.
Nothing I could do would get gns3 to work. I get fine interfaces, and I also get fine ubuntu. Previous verison with same process works great.
Any Ideas? I searched the entire filesystem for a qemu something binary, NOTHING on entire system.
Thomas
I didn’t set up Qemu/Pemu/PIX on the distribution – but that shouldn’t stop the main emulator (dynamips) from working within GNS3 – did you try running the VMWare version using VMWare Player?
hahaha…that definitely looks like it will do the trick. It is gonna take me a couple of days to get all of those files downloaded on my hotel wi-fi, but I’m positive that will fix the problem…thanks again.
Chris, I am trying to load the GNS Workbench on my laptop, but having been having problems. I downloaded the file from sourceforge.net, and I also have loaded VMWare Player on my laptop. I am following the directions here on the website, but everytime that I copy the workbench file into the Virtual Machine folder (it is showing up as a .vmdk file, not a .vmx file), I get the error that it is not a valid Win32 application when I try to open it up. Any ideas?
- Mike Gage
Mike – read this and if it doesn’t help, get back to me.
Wow Chris, you are awesome. That was a VERY fast reply!! Thanks, I will check that out right now and let you know.
You were just lucky – I’ve just wrapped up my work day and checked my email and it was an easy answer … (I think)
I am having issues with an mpls network I have set up in GNS3. I followed the configuration examples and guide you assisted with in the GNS3 forum. The issue I am having is my ce routers establish a bgp neighbor with the pe router. In the pe router with sh ip bgp vpnv4 all I can see all the routes from both ce routers however they are not being populated to the ce routers. I cannot ping across my network. I am using 3700 series routers with advipservicesk9 12.4 as the os. Any insight would be greatly appreciated.
Sorry about taking this off topic.
Sounds like a a redistribution problem. If you want to send me your configs (to my gmail account for rednectar.chris) I’ll try and have a look (your topology.net and the configs directory).
Chris,
I just want to say a big Thank You for developing GNS3 Workbench, I have been a user for a long time and just downloaded your latest version. It is awesome. To recognise you for your efforts I have done a great blog post on my CCIE Blog site http://www.rogerperkin.co.uk/ccie/index.php/gns3/gns3-workbench-awesome/ If you google GNS3 Workbench is awesome you will see it come up!
Anyway I wonder if you could put a link back to my site http://www.rogerperkin.co.uk/ccie with the title Roger’s CCIE Blog in your Blogroll?
I am pursuing my CCIE and blogging about CCIE related topics and also other random network stuff I come across – like a wireless Console cable! Watch the blog for that one soon.
I look forward to hearing from you and Thanks again
Roger
UK
OOps.
I started writing the script, didn’t get it working so removed it from the distro – but forgot to remove the link in the /opt/GNS3/IOS directory.
I’ll post it when I get it working.
Sorry about that
C
No script for GNS3 Vault IOS firmware change?
script to change GNS3 Vault firmware image -> /opt/GNS3/READMEs & Scripts/script to change GNS3 Vault firmware image
The file “script to change GNS3 Vault firmware image” does not exist in the directory “/opt/GNS3/READMEs & Scripts”
Chris, Thank you for the work that you did with VMware and GNS3. Allot time was put into that and it is really a very valuable tool. However, my problem is that I cannot get a copy of c3725-adventerprisek9-mz.124-15.T10.bin to make it work and your scripts that will allow me to use any IOS are a bit cumbersome. Any ideas?
Thanks..
Until Cisco publicly announce that they will allow users to use IOS on simulated platforms without breaking the licence agreement, I have no way of publicly helping you. Sorry about that.
Hi Chris, are you planning a release for GNS3 0.74? I still seem to have issues emulating an ASA 8.0.
Thanks
Since you’ve asked, I’ll do it when I finish my current assignment – which doesn’t finish till 9 July.
Hi Chris,
For your information SecureCRT released a new updated version for Linux ( Ubuntu 10.x 32 & 64 bit, RHEL 5.5 32 & 64 bit), You are using Konsole as a terminal emulator for tabbed sessions and it needs more space and more packages that are not needed for GNS3, but this securecrt has got more features and requires less space
Hi Chris,
Sorry but am a little confused about something. I’ve got VMWorkstation running on Win7 and see in one of your exercises “Your Windows PC” … Can you point me to where I can get that working please? I’ve got a “loopback on my win7″ but how do I get it into this VM excercise?
This is a little confusing I admit – Perhaps one day I’ll get around to writing a bit more detail, but for the quick answer:
1. Firstly, as you assumed “Your PC” is the host PC, – your Windows PC as apposed to your “Ubuntu Virtual PC”
2. You don’t need a loopback (as you would if you were running GNS3 directly on your Windows PC) – what you need is a way of connecting your Virtual PC’s interface to your Windows PC’s interface.
3. To do this on VMWare Player, go to the Virtual Machine’s Settings and make sure theFirst “Network Adapter” is set to Bridged
3a. Now make sure your PC’s network connection is “live” – ie plugged into a switch or something (There are ways around this but it gets messy)
4. GIve your PC’s network adapter an IP address that is on the same subnet as the Router interface that you are connecting to. If this is a router being set up for SDM for the first time, it will have to be in the range of 10.10.10.2-10.10.10.6
Note: Alternative step 3 – If the VM is already running, click on the VMWare Player menu – Virtual Machine->Removable Devices->Network Adapter->Bridged
If this doesn’t get you out of trouble, let me know.
Chris (RedNectar)
Hi Chris,
I used a tool called winimage to convert the disk to thin, then grew it in vmware and then reallocated the partitions using the gparted live disk.
I am struggling to get the ASA working at the moment, it keeps saying its powered up but I can console to it despite having verified working images (windows) Same with JunOS..
I think this is an issue with Qemu, any advice welcome.
Thanks
Scott
Scott,
I am having the same issue with the ASA. Did you ever find a resolution?
Hi Chris,
First of all thanks for taking the time to produce the GNS3 vmware enviroment, Excellent work.
I have a few questions though;
1) Was there a specific reason why you pre-allocate the disk. Will it not function on a say a 10Gb thin disk? I only ask as I am trying to add an olive image for Junos but the disk is now full, the olive is very large.
2) With the above in mind, I will also be unable to add my ASA + PIX, PEMU HOST.
Thanks again for all your work, I am going to convert the disk to thin and would be happy to share.
Thanks
Scott
Hi Scott,
The reason for the pre-allocated disk was because I have been trying to keep this to a size that will burn to a single DVD – when I was using a “growable” disk I kept sneaking over the size for a DVD – this keeps me disciplined and under DVD size. You can convert the disk to a non-fixed size, but it takes a few commands – I don’t have time to work out the commands right now, but if you manage to work out how to do it I’d love you to tell me and I’ll add it as an article to the GNS3-Workbench page
Chris