15 Responses to “Topology: VLAN Trunking GNS3 Lab - 802.1Q - Router On A Stick”

1. LBSources
   June 15th, 2008 at 6:13 pm

   Here is the config steps for those interested.. I modified them to the interfaces in this topology

   PC1#configure terminal
   no ip routing
   ip default-gateway 192.168.1.10
   interface e0/0
   ip address 192.168.1.1 255.255.255.0
   no shutdown
   end

   PC2#configure terminal
   no ip routing
   ip default-gateway 192.168.2.20
   interface e0/0
   ip address 192.168.2.1 255.255.255.0
   no shutdown
   end

   PC3#configure terminal
   no ip routing
   ip default-gateway 192.168.1.10
   interface e0/0
   ip address 192.168.1.2 255.255.255.0
   no shutdown
   end

   PC4#configure terminal
   no ip routing
   ip default-gateway 192.168.2.20
   interface e0/0
   ip address 192.168.2.2 255.255.255.0
   no shutdown
   end

   R1#configure terminal
   interface FastEthernet0/0
   no shutdown
   interface FastEthernet0/0.10
   encapsulation dot1Q 10
   ip address 192.168.1.10 255.255.255.0
   interface FastEthernet0/0.20
   encapsulation dot1Q 20
   ip address 192.168.2.20 255.255.255.0
   end

   ——SW1——-
   SW1#vlan database
   vlan 10 name vlan10
   vlan 20 name vlan20
   exit
   configure terminal
   interface f0/1
   switchport mode access
   switchport access vlan 10
   no shutdown
   exit
   interface f0/2
   switchport mode access
   switchport access vlan 20
   no shutdown
   exit
   interface f0/12
   switchport mode trunk
   switchport trunk encapsulation dot1q
   no shutdown
   exit
   interface f0/0
   switchport mode trunk
   switchport trunk encapsulation dot1q
   no shutdown
   end

   ——SW2——-
   SW2#vlan database
   vlan 10 name vlan10
   vlan 20 name vlan20
   exit
   configure terminal
   Enter configuration commands, one per line. End with CNTL/Z.
   interface f0/1
   switchport mode access
   switchport access vlan 10
   no shutdown
   exit
   interface f0/2
   switchport mode access
   switchport access vlan 20
   no shutdown
   exit
   interface f0/12
   switchport mode trunk
   switchport trunk encapsulation dot1q
   no shutdown
   end

2. csplau
   June 20th, 2008 at 10:37 pm

   Hello,
   How can I create Sw1 and Sw2? Using cisco3600 router? I did it. But, the switchmode port trunk command is not support? vlan also cannot be created!!!

3. LBSources
   June 20th, 2008 at 10:45 pm

   remember that you must load the NM-16ESW port module in the slot.

4. GNS3 Tutorials: BlindHog - How to build a switching lab | GNS3 Labs :: Cisco Router Simulator Network Topologies
   July 25th, 2008 at 11:40 am

   [...] case you have had a look at our Topology: VLAN Trunking GNS3 Lab - 802.1Q - Router On A Stick & need some help with configurations have a look over at [...]

5. blindhog.net » GNS3 - Switching lab part 2 (router on a stick)
   July 29th, 2008 at 2:57 am

   [...] References: http://www.gns3-labs.com/2008/06/15/topology-vlan-trunking-gns3-lab-8021q-router-on-a-stick/ [...]

6. GNS3 Tutorials: BlindHog - How to build a switching lab Part 2 | GNS3 Labs :: Cisco Router Simulator Network Topologies
   July 29th, 2008 at 6:37 am

   [...] You can also find some help in my lab GNS3-Labs:: Topology: VLAN Trunking GNS3 Lab - 802.1Q - Router On A Stick [...]

7. Chris SMith
   October 4th, 2008 at 5:52 pm

   Great lab - but no step by step testing or explanations for beginners.

8. LBSources
   October 4th, 2008 at 6:04 pm

   Hey Chris.. As I have said elsewhere..

   Hey Chris .. These are not my goals. My goals are to compile complete labs I use for my own testing, or that others share, package them nicely and share with you all. You can then do your own testing and break-fix scenarios. I’m far from an instructor or have the knowledge to build test labs for others to solve.

   You can learn more about the site here: http://www.gns3-labs.com/about-gns3-labs/

9. Chris Smith
   October 4th, 2008 at 8:50 pm

   LBSources . . . I hear you and I still appreciate your lab. Dynamips and GNS3 are very good stuff. I’ve been going over your “Router on a Stick” lab and was at least expecting to have been able to ping 1 pc to another in the other vlan (or even in the same vlan) but was not able to. So I have to go over the configs to see if anything is missing. I was still pleasantly surprised to have it displayed and running on my instance of GNS3. The blindhog videos are great as well. I just need to read up on some networking material it seems. Thanks.

10. LBSources
    October 5th, 2008 at 12:09 pm

    Sounds like you already have a scenario in the lab which you must fix. All labs on this site are delivered fully working.. This lab in particular is also the #1 topology of the site and I’m sure that someone else would have reported it non-working it truly was broken ..

11. Chris Smith
    October 6th, 2008 at 12:29 am

    mmmmmm . . . sounds like reverse psychology to me. You wanted to come up with a broken lab so that people would have to work to fix it in the first place. Very good idea on your part!

12. Nhan
    November 19th, 2008 at 9:56 am

    I has run Vlantrunklab, after finish load the configuration, From any PC, I can’t ping the default gateway and the PC in same VLAN, it’s only ping successfully it’s Ip address.
    Please help me.
    I use the lastest GNS3.

13. LBSources
    November 21st, 2008 at 10:48 pm

    Nhan .. Thats the idea of labs buddy to sort it all out and get it working

14. rcastro
    December 10th, 2008 at 3:33 pm

    I followed all the step, IOS c3640-jk9s-mz.124-16a, loaded the NM-16ESW port module, I’m using GNS3-0.5, and dynamips-0.2.8-RC2-x86. my operative system is Kubuntu 8.4 with KDE 3, everything works as should, but the trunk isn’t working. Do you have any idea why this happen? Thanks a lot.

15. LBSources
    December 11th, 2008 at 7:22 am

    @rcastro That’s for you to figure out

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