On 7 July 2015 at 20:51, Martinx - ジェームズ <[email protected]> wrote:
> Guys, > > I have an "all-in-one" OpenStack Juno setup, with LinuxBridges, where I'm > planning to use it with two tagged networks. > > Like this: > > For "Instance #1", "brctl show" returns: > > ---- > root@openstack-1:~# brctl show > bridge name bridge id STP enabled interfaces > > brqfac384d5-cd 8000.ecf4bbd0417a no eth2.100 > > tap47417a6d-3b > ---- > > For "Instance #2", "brctl show" returns: > > ---- > bridge name bridge id STP enabled interfaces > > brq50721b16-1c 8000.ecf4bbd0417a no eth2.101 > > tap15f2960f-54 > ---- > > "Instance #1" works as expected, I can see the the packets arriving inside > the Instance attached to the TAP "tap15f2960f-54". > > Also, I can run "tcpdump -c 100 -eni tap15f2960f-54" or "tcpdump -c 100 > -eni brq50721b16-1c" to see the packets. > > BUT, my second "Instance #2" doesn't receive the packets!! > > > # "Wire" > > If I run "tcpdump -c 100 -eni eth2", I can see both "vlan 100" and "vlan > 101" packets arriving. > > # vlan 100 - okay > If I run "tcpdump -c 100 -eni brqfac384d5-cd", as I said before, I can see > the packets. > > If I run "tcpdump -c 100 -eni tap47417a6d-3b", as I said before, I can see > the packets. > > # vlan 101 - not okay > If I run "tcpdump -c 100 -eni brq50721b16-1c", I can see the packets. > > If I run "tcpdump -c 100 -eni tap15f2960f-54", BOOM! I am unable to see > the packets!! > > -- > > > Why the packets are being dropped between "brq50721b16-1c" and > "tap15f2960f-54" ??? > > "ifconfig tap15f2960f-54" shows packets being dropped. > > "ifconfig tap47417a6d-3b" shows 0 packets being dropped. > > > I already double checked everything!! Also, I tried to raise txqueue, > checked ebtabled, iptables... I have no clue about whats going on here... > > I really appreciate any help! > > Thanks! > Thiago > BTW, the symptoms are weird... After a reboot (and starting the Intance #2 with bigger txqueue from the beginning), I'm not seeing the packets being dropped @ the tap interface but, they to not arrive anyway... I would love to know what can cause the packets arriving the "brqXXX-yy" interface but not its "tapXXX-YY"... Very weird... Thanks in advance!
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