Try ethtool -k eth0 | grep vlan
Verify it says they're off. If it does, they're operationally disabled and you don't need to restart the networking services or anything like that. On Fri, Oct 19, 2012 at 3:02 PM, Ryan Jensen <[email protected]> wrote: > Thanks for the ideas. I tried disabling vlan offloading and didnt have much > luck. Do I need to restart networking or anything? How do i create a > generic NIO vs the Linux one? > > On Fri, Oct 19, 2012 at 2:30 PM, Bob McCouch <[email protected]> wrote: > > > sudo ethtool -K eth0 rxvlan off ; sudo ethtool -K eth0 txvlan off > > > > Substitute your NIC in if it's not eth0. > > > > Ubuntu 12.04 started using NIC VLAN tag offloading whereas 10.X and 11.X > > did not. I had the exact same issue -- frames from virtual routers were > > making it out to the switch, but not back in. > > > > Regards, > > Bob > > > > > > PS -- Theoretically speaking, if anyone ever used IOU, they might > discover > > that iou2net.pl needs the opposite. They might find it seems to work > > *only* with VLAN tag offloading enabled in Ubutnu 12.04. > > > > > > > > On Fri, Oct 19, 2012 at 2:19 PM, Ryan Jensen <[email protected]> wrote: > > > >> Hey All, > >> I followed the guide on IPE's site here: > >> > >> > http://blog.ipexpert.com/2011/02/28/gns3-and-physical-switches-breakout-switch/#more-6136 > >> > >> I have a 24-port 3750 as my Breakout switch and my Lab Cat1-4 are also > >> 3750 > >> switches. I had a fine-working setup for a while, but I had a situation > >> where I had to upgrade my server hardware (ahh shucks right?). Previous > >> server was a Dell 2850 running Ubuntu 10.x LTS, 4gb RAM, dual dual-core > >> CPU, dual NICs. New setup is a Dell 2950 running Ubuntu 12.04.1 LTS, > 32gb > >> RAM, dual quad-core CPU, 8 NICs (two on-board, 2 on a PCIX card, and 4 > >> more > >> on a PCIX card). With the old server, this worked flawlessly. > >> The problem I'm hitting is that my Physical switches aren't able to > >> communicate with my Virtual routers. My switches see CDP from the > virtual > >> routers, but the reverse is not true. I can ping Physical <-> Physical > and > >> Virtual <-> Virtual, but not Physical <-> Virtual. My physical switches > >> are > >> getting ARP from the virtual routers, but that's about it. I.E. My Cat4 > >> has > >> an ARP resolution for R9's Fa0/1 interface, but R9 does not have a > >> resolution for CAT4s vlan2300 IP. > >> I'm not sure if it's an OS thing or maybe a NIC thing? I've tried using > >> different NICs. Tried the onboard (didnt work at all), and now I'm > using a > >> NIC on the dual-port card. I could try a port on the quad-port card as > >> well. > >> > >> Has anyone had a similar problem? > >> Here's some config info: > >> Server NIC config: > >> eth0 Link encap:Ethernet HWaddr 00:15:17:25:d4:38 > >> inet6 addr: fe80::215:17ff:fe25:d438/64 Scope:Link > >> UP BROADCAST RUNNING PROMISC MULTICAST MTU:1536 Metric:1 > >> RX packets:4106983 errors:0 dropped:13869 overruns:0 frame:0 > >> TX packets:89768 errors:0 dropped:0 overruns:0 carrier:0 > >> collisions:0 txqueuelen:1000 > >> RX bytes:401023113 (401.0 MB) TX bytes:29160705 (29.1 MB) > >> Interrupt:17 Memory:d5ee0000-d5f00000 > >> > >> I noticed the NIC is showing quite a few dropped packets, the dropped > >> packets are incrementing, but slowly. If I start a ping from CAT4 to R9, > >> the dropped packets aren't incrementing with the ping. > >> > >> Breakout switch has system MTU set to 1546. > >> > >> I layed down the Ubuntu OS, ran recommended patches, then installed GNS3 > >> and followed the above guide. That's all I've done to the host. Any > >> thoughts? Thanks. > >> _______________________________________________ > >> 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
