<Philippe.Simonet@swisscom.com>
2011-Oct-13 12:34 UTC
[Xen-devel] openvswitch and vlan, big size packets dropped
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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James Harper
2011-Oct-13 13:03 UTC
RE: [Xen-devel] openvswitch and vlan, big size packets dropped
> all is working well, but packst of bigger size as 1468 bytes (based onping -s> 1468) >Increase the MTU on eth10 to 1504. James _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
<Philippe.Simonet@swisscom.com>
2011-Oct-13 13:51 UTC
RE: [Xen-devel] openvswitch and vlan, big size packets dropped
yes, it worked, many thanks !> -----Original Message----- > From: James Harper [mailto:james.harper@bendigoit.com.au] > Sent: Thursday, October 13, 2011 3:04 PM > To: Simonet Philippe, ITS-SDL-EIS-CNV-DLE-TLC; xen- > devel@lists.xensource.com > Subject: RE: [Xen-devel] openvswitch and vlan, big size packets dropped > > > all is working well, but packst of bigger size as 1468 bytes (based on > ping -s > > 1468) > > > > Increase the MTU on eth10 to 1504. > > James_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel