GNS3 – Switching lab part 2 (router on a stick)
Posted by Josh on Tue 29 Jul 2008Categories: Cisco , Cisco Routers , Cisco VOIP , GNS3 - [105] Comments
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.
References:
http://www.gns3-labs.com/2008/06/15/topology-vlan-trunking-gns3-lab-8021q-router-on-a-stick/
July 29th, 2008 at 4:38 am
[...] GNS3 – Switching lab part 2 (router on a stick) Reference:GNS3 – How to build a switching lab Part 1 [...]
July 29th, 2008 at 12:52 pm
Hi,
thanks for this really great tool.
Can you make the tutorial downloadable, or am i doing something wrong?
Thanks for your work,
Meik
July 29th, 2008 at 9:48 pm
meik,
The download link was broken…sorry about that. You should be able to download now.
Josh
July 30th, 2008 at 10:36 am
Is there any way to reduce the CPU Usage when the router is idle for the IOS image you are using?
July 30th, 2008 at 10:53 pm
Ki,
1. Right-Click on the router
2. Click ‘Idle PC’
3. Try different Idle PC values until you find a utilization level you are comfortable with.
Josh
July 31st, 2008 at 11:47 am
[...] Link Leave a Reply [...]
August 1st, 2008 at 2:17 pm
Awesome stuff. Incidentally, what ios image is the one that you’re using for the lab ? I tried with a 3620 platform image and GNS3 is unable to find the slot module after loading the IOS.
August 2nd, 2008 at 9:13 pm
[...] one in a two part series. Part 2 will show you how to configure a “router on a stick”. Click here to see Part 2. A router on a stick is basically when a router is configured to route between two vlans with a [...]
August 2nd, 2008 at 9:54 pm
brokenflea,
I think I am using advanced enterprise image.
Josh
August 3rd, 2008 at 5:56 pm
Very usefull vids. Thanks a million
August 4th, 2008 at 3:22 pm
Hi, Thanks for the lab. Just wanted to point out that you wouldn’t need to configure the vlan database on r0 as it is using a routed (not switchport) port. When using a routed port you only need to specify the vlan tag in the encapsulation dot1q command. With switchports, the vlan must be defined in the vlan database before it will become operational on a switchport.
August 6th, 2008 at 7:59 am
@toti – You’re welcome
@Karl – That is nice to know. I had always added it to the vlan database. My switching knowledge only goes so far…:)
Josh
August 8th, 2008 at 3:12 am
Hi Josh,
Thanks for the video, its a great resource
I am using a 3600 just as you are doing in the video with the NM-16ESW and IOS image
c3640-a3js-mz.124-21.bin which is advance interprise. However I cant use the commands that you are using like “switchport mode access” infact there is no command that starts with “switchport” in the interface config mode.
Do you have any idea where i might be wrong??? Do i need some other IOS version??? Thanks in advance
cheers
bilal
August 14th, 2008 at 6:35 am
Hi Josh,
I’m using a 3700 dynamics gns3 router with the ios c3725-adventerprisek9-mz.124-bin, it allows me to create the vlans but when I go back to priviledge mode and type show vlans, it says no vlan is configured. does this have to do with the code I’m using?
Thanks a lot in advance.
August 14th, 2008 at 9:31 pm
Eyambe,
I haven’t had a chance to test this scenario, but …
You might try applying the vlan database configuration with the ‘apply’ command in vlan database configuration mode.
Or, you could add vlans in global config mode.
Josh
August 19th, 2008 at 6:56 am
Great stuff again, Josh. I’m passing this along to some of my buddies who are looking to lab some switching stuff.
August 19th, 2008 at 3:54 pm
Hello Josh. Thanks for the tutorial. ))
I have same problem, that Bilal has. I don’t hawe “switchport” command.
I am using a 3600 with the NM-16ESW
I’m using:c3660-ik9o3s-mz.124-6.T.bin
How can this be fixed???
Thanks )))
August 20th, 2008 at 3:35 am
Sorry, everything’s workin)))
August 22nd, 2008 at 9:23 pm
Aaron,
Thanks!
Wanderer,
What was the problem?
Josh
August 29th, 2008 at 9:59 pm
Hi Josh,
I just wanted to say thanks a million for these great tutorials. At first, when I found gns3 I was very excited, but quickly became frustrated because I couldn’t get it to work the way I wanted. Thanks to your tutorials, I have a great lab to study, & well on my toward my BCMSN and beyond. I can’t thank you enough!
-Julie
August 31st, 2008 at 12:37 am
Julie,
You’re welcome.
Josh
September 5th, 2008 at 5:47 am
Josh,
Thanks for the tutorials, I have just found GNS3 and these have helped me get it going how I want it. I have some MS certs but am just starting on the Cisco track.
Thanks again.
Eddie
September 7th, 2008 at 5:54 pm
Hi.
Which IOS image do you use for this tutorial?
September 9th, 2008 at 11:14 am
Hi Josh,
Big up from South Africa 2 u for the amazing tutorials u’re providing. I have also just discovered GNS3 & its amazing simulation capabilities.
@wanderer & Bilal – I am experiencing exactly the same prob with IOS c3660-js-mz.124-7a.bin and wonder if this IOS does have trunking support cos I too cannot use the switchport command.
Wot I notice is that after creating the VLans and doin a show vlans command, it immediately tells me no vlans configured.
Am I missin sumthin?
*newbie*
Thanks Gino
September 11th, 2008 at 9:12 pm
josh
thanks for everything on this lab
but if you could point me how to create trunk between vlans will appreciate it
which ios are u using for the switch according to your tutorial that does not help me i guess i need an ios image for the switch
thanks
September 19th, 2008 at 5:49 am
Josh, thats a great lab.
I have an issue however. using the 3640 with the NM-16ESW and the same IOS you use: c3640-ik9o3s-mz.124-18c
The thing is, I type the following commands on the router:
!
interface FastEthernet0/5
switchport trunk encapsulation dot1q
switchport trunk allowed vlan add 5
switchport mode trunk
!
and all are taken without problems. But when I do “sh run” the only config I see is:
!
interface FastEthernet0/5
switchport mode trunk
!
thats, I cant setup the encapsulation and I cant see the vlans that Im allowing
would you had the same problem?, how did you fix it?
Thanks
September 23rd, 2008 at 9:18 pm
Eddie,
Glad to hear the tutorials are helping. Good luck on the Cisco Track!
Josh
September 23rd, 2008 at 9:22 pm
galindro & ginobot & dahir,
I am using c3640-ik9o3s-mz.124-18.bin for this tutorial.
Josh
September 23rd, 2008 at 9:24 pm
javi,
I have not tried configuring allowed vlans. Did you add vlan 5 in the vlan database?
router#vlan database
router(vlan)#vlan 5
router(vlan)#apply
router(vlan)#exit
router#
Josh
October 18th, 2008 at 2:03 pm
Keep it up thanks for such cool video
October 18th, 2008 at 10:16 pm
Hi!
I have som problem with the InterVLAN routing. I´m using a “switch”, 3640 with the 16ESW module and a 3640 as the router. When i try to get ip connectivity between these devices the ARP is not succefull in one direction. I´ve used the “debug ip arp” command and i says “wrong cable”.
Does anybody have an idee what to do?
Regards Johan
October 23rd, 2008 at 4:11 pm
I’m stuck. When I enter the switchport mode trunk on sw0, it trunks to f0/0 not f0/1. I went through the steps in the video several times and I can’t find out what I’m doing wrong. Any ideas?
October 23rd, 2008 at 7:35 pm
Ed,
Can you post the output of your session? I am not following you.
Josh
October 24th, 2008 at 6:51 pm
Hi everyone,
I tried to work on vlan using gns3 router 3600.
I used C3640-IS and also c3640-ik9o3s-mz[1].124-18a. but in both IOS I was unable to use #switchport command
could you please tell me why others pple they have no problem and I am facing this problem.
Please reply me back.
Thank you
October 30th, 2008 at 10:17 am
I can’t replicate it because I forgot to have it save the working configs so all the bin files were deleted. Since then I have not been able to even create the setup you have in the video. None of the devices will start.
In the original problem, when I was performing the step to enter the switchport mode trunk command, the response said it trunked to f0/0 on the switch, not to f0/1 like the video showed. I couldn’t get past that point.
November 1st, 2008 at 2:06 pm
sw0(config)#hostname sw01
sw01(config)#switchport trunk encapsulation dot1q
^
% Invalid input detected at ‘^’ marker.
OK I was describing it wrong. When I reproduced what I did, it did the same thing that happened when I tried it originally. As you see below, f0/0 trunks but I don’t get a message about trunking it to f0/1. Could this be a normal message?
sw01(config)#int f0/0
sw01(config-if)#switchport trunk encapsulation dot1q
sw01(config-if)#switchport mode trunk
sw01(config-if)#
sw01(config-if)#
sw01(config-if)#
*Mar 1 00:09:20.395: %DTP-5-TRUNKPORTON: Port Fa0/0 has become dot1q trunk
sw01(config-if)#
November 27th, 2008 at 10:26 am
very confusing
1)Do I have to create vlan database on real time cisco switch ?
I have created vlan database, vlan 10 and vlan 20. exit and when used show run command at the end it says
interface vlan1
no ip address
we cant assign ip address on switch ports. so as far as my knowledge it should be switchs ip address
2)am I correct?
December 1st, 2008 at 9:29 am
josh/ anyone can help me asap plz
December 3rd, 2008 at 10:31 pm
Remo,
Use the ‘vlan database’ command to configure vlans.
Once you are in vlan configuration mode, type ‘show’ to see the vlans created.
Interface vlan1 in the running config is the layer 3 interface for vlan 1.
I haven’t tested this, but you should be able to type ‘interface vlan 10′ and then an ip address if you wanted to configure an ip address for vlan 10.
Josh
December 16th, 2008 at 8:35 am
Josh,
Thank you for the great tutorials, these are awesome! Just had one comment. I noticed that around 3 minutes into the video you stated that we must assign the following commands to fa0/1 :switchport mode access and assign the port to vlan 10. I noticed that you never typed int fa0/1 you added these commands to fa0/0.
Just something in case people are having issues with their setup.
Thanks,
-ed
December 17th, 2008 at 9:00 am
nevermind, i see that you did type int fa0/1…
it was just hidden in the log messages….
sorry about that.
December 19th, 2008 at 8:02 am
router man,
I watched the video and I noticed it skipped in several areas. I am looking into that. It may have skipped.
Or, it is possible I accidentally deleted that section when editing the video.
Thanks for pointing this out!
Josh
December 23rd, 2008 at 7:18 am
hai josh .. great to see you putting up the switching tutorials .. can we expect more on switching or will this advancement will be final for quite some time ???
keep up the good work
bestwishes
rakesh
December 23rd, 2008 at 7:21 am
Rakesh,
This will probably be it for a while. I am staying pretty busy with the virtual voice lab.
Josh
January 3rd, 2009 at 3:02 pm
Thanks for a great tutorial.
January 9th, 2009 at 4:06 pm
[...] GNS3 – Switching lab part 2 (router on a stick) [...]
January 21st, 2009 at 6:10 am
Hi all,
I have a problem with this even after configuring everything. I am not able to ping to the router IP’s 192.168.1.1 or 192.168.2.1 from both the PC’s(Vlan’s). Please suggest what could be the problem
January 29th, 2009 at 12:31 pm
Hello all,
I have trouble with the nm-16esw module. I can add it to slot 1 (using c2600-j1s3-mz.123-26.bin) and gns3 will let me make ethernet connections, but when I boot the router it doesn’t detect the module for some reason… I can’t see any FastEthernet 1/* stuff. Any ideas?? Does my IOS not support it?
February 1st, 2009 at 10:27 pm
Please post the output of a ‘show version’ and ‘show run’
February 3rd, 2009 at 8:34 pm
joe
You can try to add links with “Manual” and choose port from switch module.
February 9th, 2009 at 11:58 pm
Nucleo,
Yes, I prefer to use the manual network connections.
Josh
March 4th, 2009 at 1:56 pm
Hi it is even not letting me go into vlan database? When i do show ip int brief it is not showing anything there either. Tried to switch the IOS but didn’t work any clue would be appreciated.
Many Thanks
March 5th, 2009 at 9:40 pm
Waseem,
Can you send me your .net configuration file?
Josh
March 22nd, 2009 at 11:36 am
As a Newbie, I am always searching online for articles that can help me. Thank you
March 26th, 2009 at 7:46 pm
Waseem,
its a IOS issue, try different one i’m sure,
good luck
April 6th, 2009 at 7:11 pm
Josh,
I have an image called “c3640-telco-mz.123-11.T.bin” and it works great with switching, but unfortunately it does not support the two features am looking for which are
1 – ssh version 2
2 – security using sticky MAC address
I know for a clue that an image called ” c3550-i5q312-mz.121-20.EA1.bin ” can do both features but I don’t know if I can apply it on the c3600 router, and this image is unavailable on Cisco website for some reason, do you know a website that can provide it? if not then do you know any other image that support switching and those 2 features?
April 12th, 2009 at 1:46 am
your tutorials are great but one thing i want to ask is that i m facing difficulty in connecting 2 3640 router as a switch… bcuz the trunk cable between them doesnot use a cross cable… so i m not able to perform VTP between them… i have checked the commands on other simulations they work perfectly..
kindly reply me as soon as possible… regards shayan
April 16th, 2009 at 8:10 am
Dear All …I am try to build switching lab using GNS3 ..could you help me please to get IOS Image: c3640-ik9o3s-mz.124-18.bin
I will really appreciate your help .
April 16th, 2009 at 8:11 am
Dear All …I am trying to build switching lab using GNS3 ..could you help me please to get IOS Image: c3640-ik9o3s-mz.124-18.bin
I will really appreciate your help .
April 19th, 2009 at 8:22 am
Shayan,
Make sure you are connecting switch ports instead of just the Fa0/0 or Fa0/1 interfaces.
Josh
April 19th, 2009 at 8:23 am
Noah,
This is all the help I can give.
http://www.blindhog.net/gns3-how-to-find-pix-images-pix-serial-numbers-and-ios-images-using-google/
Josh
April 25th, 2009 at 2:20 pm
hi Josh
please tell me from where i can get c3600 cisco ios image
thanks
May 7th, 2009 at 9:05 am
When the lab is complete & saved, it saves the configuration files but it seems that it does NOT save the VLANs. That is probably because VLANs are held in a separate database file & not in the configuration file. So when I opened the saved project, I had to add the VLANs on the NM-16ESW router again to make the topology work.
May 8th, 2009 at 5:22 am
Hi,
Im trying to set this up in a live environment (Have the real equipment handy
)
Im using a cisco 3620 for the router but it does not accept the VLAN Database command? Any idea why this could be?
Thanks
May 18th, 2009 at 10:46 am
Hi josh, Really good job.
I usually use dynamips but watching this video was really cool. Again read some comments here and wanted to point out some things.
COMMENT: ” I notice that after creating the VLans and doing a show vlan command, it immediately tells me no vlans configured.”
In Privilage mode of your Router type:
R1# show vlan-switch
it will display all available VLAN’S INFO.
Thank you Josh, have a nice day.
May 26th, 2009 at 2:25 am
Hi Josh!
Well First I wanna thank you for Vids ))
Than I’ve some Questions and need some help ))
Josh .. Well I’m studying BCMSN )) and using GNS3, I cant use Switches as good as I want.
I mean that, I cant use STP, VTP and so on ..
CAN GNS3 HELP ME WITH SWITCHING TOPOLOGY?
.. you’r free do give me some advices about GNS3, other Simulators.. or what simulators should I use to build switching topology for BCMSN..
thank you! ))
May 27th, 2009 at 9:38 am
I’ve configured everything exactly like the lab. Same IOS, same routers, same ips, same everything.
I can ping from PC1 to the router VLAN 10 sub-if ip
I can ping from PC2 to the Router VLAN 20 sub-if ip
I cannot ping from PC1 to PC2
I cannot ping from PC2 to PC1
I cannot ping from PC1 to the Router vlan 20 sub-if ip
I cannot ping from PC2 to the Router vlan 10 sub-if.
It’s obviously something on the Router than I’m missing – just not sure of what???
June 11th, 2009 at 2:23 pm
hi..how can i get IOS for GNS3?cant use the program as it says i need IOS
June 21st, 2009 at 11:45 am
Hi Josh, Thanks for your video. I was searching something like this for learning and practicing in GNS3. The video about GRE VPN was very interesting and easy to understand. Maybe do you have a tutorial in GNS3 about MPLS technology???…Something simple, please. Thank you.
July 18th, 2009 at 5:52 pm
Jaris,
Sorry, I don’t know anything about MPLS.
Josh
July 30th, 2009 at 8:39 am
Which IOS of 3600 platform supports this tutorial because I have following IOS with me but its not supporting, it gives me message – yo need to manually configure fastethernet .
please help me
Regards,
JKD
August 28th, 2009 at 11:26 am
Great job putting this tutorial together. As a tip to others, if you want to use routers to simulate PCs, as is done in this tutorial, I suggest turning off ip routing on the ‘pc’ (using the no ip routing command) and then using the ‘ip default-gateway’ command to point the ‘pc’ to the router. This will more closely simulate how you configure a normal PC.
-rb
October 10th, 2009 at 4:16 pm
I just want to 2nd RBNetEng’s point.
I banged my head all day trying to figure out why I couldn’t ping across VLANs (like #67.)
“no ip routing” on the “PCs” did the trick.
Not sure if I missed it in the tutorial vid or not.
And thanks a ton for the vid, in 1.5 days I feel well up to speed w/ using GNS to implement labs.
October 19th, 2009 at 6:59 pm
Cant thank you enough for all those who supported in building this fantastic tool.
Thank you all, a million times…!
November 24th, 2009 at 12:38 am
josh,i love you..i thank you for all the tutorial stuffs…….i am a customer from trainsignal……….this gns3 one is ultimate……really i appreciate all of you guys……..small request: can u put more tutorial for switching in gns3? i am ccna beginner….this will help me to get a small job in uae……thank you……
December 20th, 2009 at 4:14 am
How to configure 6500 switch VTP, VLans Edges switches with load balanceing
December 20th, 2009 at 4:15 am
Please show me step by step procedure i am new in this area
January 16th, 2010 at 3:00 pm
Hi Josh, really nice & simplified stuff, I was searching on MPLS cloud configuration to create DMVPN topology, is there anything for me or can u guide me to some alternative way please…
February 10th, 2010 at 8:43 am
hi josh, thanks for this tutorial however i have some questions…im a newbie on networking and i’m having trouble with vlans…on your video @ 5:30 the prompt displays
r1#show run int f0/0
Building configuration…
Current configuration : 83 bytes
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
end
while on my prompt, it showed:
R1#show run int f0/0
Building configuration…
Current configuration : 33 bytes
!
interface FastEthernet0/0
end
i just followed your process step by step.
i am using c3640-jk9s-mz.124-16.bin btw.
where do you think is my problem? and how can i solve this?
just a follow up question, whenever i make a subinterface after the step above here is what my prompt shows:
R1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#int f0/0
R1(config-if)#no shut
R1(config-if)#int f0/0.10
^
% Invalid input detected at ‘^’ marker.
since i am having trouble with these, now i’m stuck.
February 24th, 2010 at 12:28 am
Can anybody help me to deside which exam I should go for doing CCNP?
February 25th, 2010 at 6:30 am
Hi all,
i am using cisco 3660 ios c3660-i-mz.124-15-2.bin to switching purpose.
after configure slot0 and start console, it will be not run.
Please guide for the same.
March 18th, 2010 at 2:18 am
hi all!
can you help me!
why don’t configure ” sw trunk encapsulation do1q and command “sw mode trunk” in fa0/0 interface. I use ios c3640.
my configure as following:
vnptepay-sw(config-if)#switchport trunk encapsulation dot1q
^
% Invalid input detected at ‘^’ marker.
vnptepay-sw(config-if)#switchport mode trunk
^
% Invalid input detected at ‘^’ marker.
vnptepay-sw(config-if)#exit
vnptepay-sw(config)#inter fa0/1
^
% Invalid input detected at ‘^’ marker.
vnptepay-sw(config)#inter fa1/0
vnptepay-sw(config-if)#sw mode acc
vnptepay-sw(config-if)#sw mode access
^
% Invalid input detected at ‘^’ marker.
vnptepay-sw(config-if)#sw access vlan 2
^
% Invalid input detected at ‘^’ marker
help me!
May 8th, 2010 at 12:28 am
hi josh ,
this tutorial is great, you have done an excellent stuff.
thanks,
pp
May 27th, 2010 at 1:35 pm
Hi,
If you are unable to use “switchport” command on interface, it’s probably because you’ve got two slots configured, Leopard (that you cannot remove) and NM-16ESW. You HAVE TO use ports from NM module in order do use switchport command (probably fa1/0 – fa1/15), NOT fa0/0, fa0/1 from Leopard.
June 25th, 2010 at 11:50 pm
Marius is absolutely right!
The “switchport” command is available on the switching module only, not on the other interfaces. Remember: interface type/slot/port. You have to track on which slot you installed the NM-16ESW card. If it`s on slot 1 use interfaces F1/0, F1/1 and so on to connect the other devices to the switch.
July 9th, 2010 at 1:23 am
Hi every one,
i am using GNS3 for my Lab when i am giving command “switchport encapsulation dot1q” my router not supporting and iam using 3640 please give your suggestions
July 27th, 2010 at 8:21 pm
viswa,
It could be that you are not using the proper IOS image.
Josh
August 5th, 2010 at 2:27 pm
Hi,
I am trying to configure VTP on my 3725 switch. While in config t, I enter the command “vtp domain cisco1″ and I get input detected error. Please any suggestions.
August 6th, 2010 at 5:41 am
I think it may depend on the IOS image you are using but try entering ‘vlan database’ at exec prompt.
Router1#Vlan database
Router1(vlan)#vtp server
Router1(vlan)#vtp domain test
Router1(vlan)#vtp password test
Add 2 new Vlans
Router1(vlan)#vlan 2 name A
Router1(vlan)#vlan 3 name B
Router1(vlan)#apply
Router1(vlan)#exit
August 18th, 2010 at 12:16 am
anybody can help me,i’m working with my Laborotory router on a stick. i have done correctly the configuration. but i want to share the internet connection to vlan1,vlan2,vlan3. If anyone can give me the sample configurations how to share connection.
Thanks in advance,
August 18th, 2010 at 8:35 am
waple02,
If you have 3 sub interfaces and one interface for the public, it might look something like this.
int f0
ip address dhcp
ip nat outside
int f1
no ip address
int f1.1
encapsulation dot1q 1
ip address 192.168.1.1 255.255.255.0
ip nat inside
int f1.2
encapsulation dot1q 2
ip address 192.168.2.0 255.255.255.0
ip nat inside
int f1.3
encapsulation dot1q 3
ip address 192.168.3.0 255.255.255.0
ip nat inside
access-list 10 permit 192.168.1.0 0.0.0.255
access-list 10 permit 192.168.2.0 0.0.0.255
access-list 10 permit 192.168.3.0 0.0.0.255
ip nat inside source list 1 interface f0 overload
This might not be exactly correct. Doing it all from memory. I will try to check my work later.
Josh
November 10th, 2010 at 8:24 am
A part answer for Q.47 ::
IF I use the same router for PC1 and PC2 ,
then I can not ping PC1 PC2 .
IF I use the diff router for PC1 and PC2 ,
then I can ping PC1 PC2 .
I do not know why it works or not work..
December 5th, 2010 at 5:31 pm
Wow this was a tough one. First I did not find a VLAN database, after differant configs I now have a VLAN database, but the command “switchport” is unreonized uder global config mode. I never got this to work.
Mark
January 18th, 2011 at 1:25 pm
Hi
how to use run switch and how to use OF NM- 16ESW Becuse don’t work corectlty,becuse i’m run rub protocol hsrp on the etherswich.
can you help me
with tanks esi
February 8th, 2011 at 10:32 pm
I’ve followed part one and two of your tutorial of “router on a stick” twice and everything is directly in line with your instructions. The issue is I can’t ping the router from PC1 or PC2. I can send you my conf files if you want. I’m quite sure you will find them to be correct.(famous last words)
Let me know if you can help.
Thanks for the awesome video!
Keep it up!
February 8th, 2011 at 11:20 pm
Brian,
I know you have probably done this already but can you make sure you created vlans on the router?
Josh
February 9th, 2011 at 11:40 pm
Thanks for getting back. Turns out I didn’t do a no shutdown command on an interface.
I apologize for the bother.
Thanks though!
April 22nd, 2011 at 9:14 am
I am not able to configure sub interface on router.
please suggest!
Router(config)#int f0/0.10
^
% Invalid input detected at ‘^’ marker.
Router(config)#
May 12th, 2011 at 11:02 pm
Ni3 :
do this:
conf t
int fa0/0
no ip add
no shut
int fa0/0.1
encap isl
etc,etc
May 28th, 2011 at 11:45 am
need help in configuring QinQ in gns3
May 30th, 2011 at 3:45 am
Hi, Josh
My query is that how to practice HSRP in Gns3 . Can you please provide me HSRP lab video for Gns3.
June 30th, 2011 at 9:13 pm
Switch#config t
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#hostname sw01
sw01(config)#int f0/0
sw01(config-if)#
sw01(config-if)#switchport trunk encapsulationdot1q
^
% Invalid input detected at ‘^’ marker.
— sir, can you please help me about this error i can’t use the switchport… what should i do?.. thanks
July 2nd, 2011 at 6:03 am
hello
i have a big problem when using 3725 router with GNS3 i created vlans betweens 4 swiches and apply trunks configrations betwen them but i can’t ping between vlans
i do the following troubleshooting :
- removes vlan database and configred it again
- check VTP configrations and removed it and put it again
- delete vlans interfaces and create it again
- relaod teh 4 sws
- reload teh GNS3
all above with no use , pls advise urgent ?
August 25th, 2011 at 1:03 am
if any one have problem regarding the ios, kindly note that this version of ios is also working at my gns3, if anyone is intrested download it
c3640-jk9o3s-mz.124-16.bin size is 33 plus MB
thanks
October 15th, 2011 at 10:30 am
great work josh. thanks a lot
This tutorial works perfect. Initially pings were failing to each other. i stopped and started the switch. after that pings are successful.
Asif