[Xen-devel] openvswitch and vlan, big size packets dropped

[<Philippe.Simonet@xxxxxxxxxxxx>]

Hi

 

i have the following setting :

 

xen-hypervisor-4.1-amd64                  4.1.1-2

linux-image-3.0.0-1-amd64                 3.0.0-3  as dom0

 

network(cisco switch,mode trunk) ---- eth10 (dom0 phys) ---- xbr10 ---- vif32.0 ---- eth0(domu)

eth10 is connect on a cisco switch, 802.1q trunk, with 5 vlans (10,20,30,40,50)

 

I use openvswitch to build the bridge, like that :

 

ovs-vsctl add-br xbr10

ovs-vsctl add-port xbr10 eth10

 

I use following script as vif-bridge :

http://dev.slackverse.org/slackbuilds/13.37/openvswitch/xen/vif-openvswitch

 

and following config in my cfg :

 

vif             = [

                        'bridge=xbr10.10',

                ]

 

all is working well, but packst of bigger size as 1468 bytes (based on ping –s 1468)

are dropped (somewhere), in fact tcpdump on domu indicates that only the

last fragmented packet  is arriving, other not.

 

8: eth10: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000

    link/ether f4:ce:46:a5:79:0a brd ff:ff:ff:ff:ff:ff

75: xbr10: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN

    link/ether f4:ce:46:a5:79:0a brd ff:ff:ff:ff:ff:ff

92: vif32.0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 32

    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff

 

any suggestions ?

 

thanks and regards

 

Philippe

 

 

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