Contribution to create a virtual host for GNS3

xsimio · **Joined:** Fri Nov 07, 2008 12:04 pm **Posts:** 127

things very usefull on linux (microcore):

quagga (we could get experience on that one also, a lot of people are using it in production)

mtr command (traceroute is ok, mtr is better)

brezular · **Posted:** Sat Jul 03, 2010 7:39 pm

Quote:

quagga (we could get experience on that one also, a lot of people are using it in production)

I added quagga to linux-microcore-2.11.5.img but I am not able to get it working for microcore linux. If you want to play with it, this is the image:

Quote:

http://rapidshare.com/files/404752444/linux-microcore-2.11.5.img.html

Cheers,

brezular · **Posted:** Sun Jul 04, 2010 7:42 pm

I made some progress I hope I will release a microcore image with configured quaggea(zebra) and write "How to" for those who would like to configure microcore for quagge by them own.

Cheers,

UPDATE: The tutorial and microcore with configured Quagga is here:

topic2282.html

I tested Qaugga running RIP against to Cisco in GNS3 - it runs OK.

kaage · **Posted:** Tue Jul 27, 2010 11:46 am

Hi all,

1. Are you able to use console with microcore? I mean Qemu terminal works well but console using telnet doesn't. Console opens but it's like freezed (not connected).

2. Are you able to run multiple host at the same time?

ezrasam · **Posted:** Wed Aug 04, 2010 10:53 am

Do we have a server host image?
May be, we can have smaller individual servers for DHCP, DNS...

we may have our own server farm running in GNS rather than a full fledged OS running on a 3rd party emulator

this is just a wish, you may share if you already have one

karthiksk · **Posted:** Thu Sep 02, 2010 4:05 am

thank you for the post

cmadiam · **Posted:** Wed Dec 01, 2010 5:05 pm

Hi Guys,

Its seems that my microcore and router doesnt ping each other. I tried connecting two qemu instances and the ping works.

Can someone help me on this?

I'm using GNS3 0.7.2 running on windows 7.

Thanks!!!

tranzitwww · **Posted:** Fri Dec 17, 2010 2:46 pm

There is a nasty bug in "linux-tinycore-2.11.5.img", you can't use arrow keys on X (gui) is also in SDL and many others

Another one with iptables...
I need to modify TTL field in all traffic from [Internet] -> [my PC], because my ISP sucks so much and send all traffic with TTL=1 :(
So I can't use a dynamips router directly connected to the Internet and have to put first a Qemu Host to modify that field.

Both tinycore/microcore latest versions have this "bug"...
In fact there are some module missing "ipt_ttl".

Code:

root@box:~# uname -a
Linux box 2.6.29.1-tinycore #1337 SMP Fri Apr 10 19:12:39 EEST 2009 i686 GNU/Linux

root@box:~# iptables -v -t mangle -A PREROUTING -i eth1 -j TTL --ttl-set 50
TTL  all opt -- in eth1 out *  0.0.0.0/0  -> 0.0.0.0/0  TTL set to 50
iptables: No chain/target/match by that name.

root@box:~# modprobe ipt_ttl
modprobe: module ipt_ttl not found in modules.dep

root@box:~# iptables -V
iptables v1.4.3.2

It will be great to include all basic iptables modules in next release

Code:

ip_tables iptable_filter iptable_mangle iptable_nat
ipt_limit ipt_multiport ipt_tos ipt_TOS ipt_REJECT ipt_TCPMSS ipt_tcpmss ipt_ttl ipt_LOG ipt_length
ip_conntrack ip_conntrack_ftp ip_conntrack_irc ipt_conntrack ipt_state ipt_helper ip_nat_ftp ip_nat_irc

A small suggestion to add "dhclient" as well :))

brezular · **Posted:** Wed Dec 22, 2010 7:45 am

Hi,
1.

Quote:

There is a nasty bug in "linux-tinycore-2.11.5.img", you can't use arrow keys on X (gui) is also in SDL and many others

Left click on Tinycore desktop and dialog menu appears (Appbrowser, terminal, Applications etc.). Now I can navigate trough menu items with arrows keys. Is it same with you?
I can't select icons on bottom toolbar with arrow keys (only mouse is working). Not sure if it should work.
I test it with Tinycore 2.11.5.
Did you try use option "-k en-us" for Qemu? Does it change something?
http://tinycorelinux.com/forum/index.php?topic=1202.0;prev_next=prev#new

2.

Quote:

A small suggestion to add "dhclient" as well :))

I can't find dhclient in tce repository. Is it somehow better than udhcpc?

3.

Quote:

Another one with iptables...
I need to modify TTL field in all traffic from [Internet] -> [my PC], because my ISP sucks so much and send all traffic with TTL=1 :(
So I can't use a dynamips router directly connected to the Internet and have to put first a Qemu Host to modify that field.

Both tinycore/microcore latest versions have this "bug"...
In fact there are some module missing "ipt_ttl".

Except of ip_tables and "iptable_filter" all other modules can be loaded for iptables 1.4.10. I will proved them in next release Microcore 3.4.

tranzitwww · **Posted:** Wed Dec 22, 2010 12:43 pm

Hi and thanks for reply!

Quote:

Did you try use option "-k en-us" for Qemu? Does it change something?

Yes I've try 'en-us', 'fi', and many more, but no luck. (There are many posts on the Internet with this problem, and that was the fix)
I'm running Qemu on Windows and I think this is the problem, Qemu is not loading 'keymaps'.
I renamed 'keymaps' sub-folder from GNS3 (all-in-one-version), try again and no error nothing, even put all keymaps files in the same folder with the qemu binary...
In linux it load them from '/usr/share/qemu/keymaps', but windows ??
In manual it said to use '-L', I use it '-L G:\Work\Programs\GNS3 -k en-us' and same old story.
I don't need arrow keys to select icons, but to modify files with 'vi'...

Code:

-L path set the directory for the BIOS, VGA BIOS and keymaps

Quote:

I can't find dhclient in tce repository. Is it somehow better than udhcpc?

Thanks! I didn't know about that one, and for sure I'll make a alias or symbolic link to dhclient :)) (hard to remember)

Quote:

Except of ip_tables and "iptable_filter" all other modules can be loaded for iptables 1.4.10. I will proved them in next release Microcore 3.4.

Thanks!! Can't wait to see it ;) Right now I'm using a ubuntu-10.10, but the image is too big...

Contribution to create a virtual host for GNS3

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