I had a similar problem when I upgraded Ubuntu. It looked like the NIC or Linux was stripping VLANs on inbound. I fixed it by using Generic Ethernet NIO on the GN GNS3 cloud instead of the Linux Ethernet NIO one. Which are you using?
Keller Giacomarro [email protected] On Tue, Aug 28, 2012 at 4:07 PM, Tony Singh <[email protected]> wrote: > CDP uses vlan 1, make sure other tagged vlan frames are getting through - > wireshark is your friend > > -- > BR > > Sent from my iPhone on 3 > > On 28 Aug 2012, at 18:03, Joe Sanchez <[email protected]> wrote: > >> is your GNS router going directly into the cloud, or through the GNS3 >> switch? Can you post your config's for the GNS3 router to include the IOS >> version your using? >> >> On Tue, Aug 28, 2012 at 9:13 AM, Bob McCouch <[email protected]> wrote: >> >>> Thanks CJ. Yeah, I think the VLANs are working. I have CDP working properly >>> and even untagged frames from the routers are landing where they should, >>> but it seems when I send a tagged frame from the Dynamips router, that's >>> not making it through. If the VLANs to separate each router weren't working >>> CDP would be all jumbled up. >>> >>> I still have the hard drive with my old install but I hate thinking my >>> setup was impossible to replicate again! >>> >>> Bob >>> -- >>> Sent from my iPhone, please excuse any typos. >>> >>> On Aug 28, 2012, at 10:02 AM, CJ <[email protected]> wrote: >>> >>> Is 802.1q support properly installed on Ubuntu? >>> >>> Did you rebuild the subinterfaces on the server? If so, then yea 802.1q is >>> most likely working. >>> >>> I would try to capture on the server and also on the switch interface, >>> ingress from the router. >>> >>> So what the traffic looks like, if both tags are there. >>> >>> My guess, some package or some weird setting needs to be set on the server. >>> >>> Are you using ubuntu server or desktop? I also found issues with NICs when >>> trying to use the GUI to manage the NICS. The GUI and what you configure on >>> the CLI don't match all the time because Ubuntu has changed the way the OS >>> manages the interfaces. >>> >>> Hope that helps, if I think of something more useful I'll let you know. >>> >>> CJ >>> >>> On Tue, Aug 28, 2012 at 8:34 AM, Bob McCouch <[email protected]> wrote: >>> >>>> Hi all, >>>> >>>> Sorry for the semi-off topic question, but so few people do this >>>> specific server config I thought if anyone has an answer to this they >>>> might be here. >>>> >>>> I just rebuilt my lab server last night using Ubuntu server edition >>>> 12.04. My design uses a breakout switch to support QinQ so the routers >>>> can have VLAN subinterfaces and integrate with physical switches. >>>> Dynamips interfaces are tied to VLAN subinterfaces on the server using >>>> the Dynamips nio_linux feature. >>>> >>>> Keep in mind, this all *worked fine* under Ubuntu 11.04. I rebuilt the >>>> box for other reasons. No changes to the breakout switch, same >>>> Ethernet adapters used, etc. >>>> >>>> Now, the real switch integration works using untagged frames from the >>>> virtual routers, but if I use VLAN subinterfaces on the routers they >>>> don't seem to make it through. So it's really the double-tagged frames >>>> that seem to be a problem, or frames that are already tagged when they >>>> hit the server. >>>> >>>> Again, this all worked under a previous Ubuntu, so just curious if >>>> anyone knows of a difference with 12.04 vs earlier versions that might >>>> need tweaking. >>>> >>>> Thanks. Please feel free to reply off-list to keep the noise down and >>>> I will repost a solution I I find one. >>>> >>>> Thanks! >>>> >>>> Bob >>>> -- >>>> Sent from my iPhone, please excuse any typos. >>>> _______________________________________________ >>>> For more information regarding industry leading CCIE Lab training, please >>>> visit www.ipexpert.com >>>> >>>> Are you a CCNP or CCIE and looking for a job? Check out >>>> www.PlatinumPlacement.com >>>> >>>> http://onlinestudylist.com/mailman/listinfo/ccie_rs >>>> >>> >>> >>> >>> -- >>> CJ >>> >>> http://convergingontheedge.com <http://www.convergingontheedge.com> >>> _______________________________________________ >>> For more information regarding industry leading CCIE Lab training, please >>> visit www.ipexpert.com >>> >>> Are you a CCNP or CCIE and looking for a job? Check out >>> www.PlatinumPlacement.com >>> >>> http://onlinestudylist.com/mailman/listinfo/ccie_rs >>> >> _______________________________________________ >> For more information regarding industry leading CCIE Lab training, please >> visit www.ipexpert.com >> >> Are you a CCNP or CCIE and looking for a job? Check out >> www.PlatinumPlacement.com >> >> http://onlinestudylist.com/mailman/listinfo/ccie_rs > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > http://onlinestudylist.com/mailman/listinfo/ccie_rs _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs
