[ovs-discuss] [BUG] multi-/broadcast counter, sFlow

[Christoffer Loeffler]

Hello,

I ran in a curious measurement when I looked at sFlowTool and sFlowTrend
numbers.

Several counters display 4,294,967,295. These are ifInBroadcastPkts,
ifInUnknownProtos, ifOutMulticastPkts, ifOutBroadcastPkts.

My setup uses the software at [1] and I start it with [2]. For enabling
multicasting I run the following command [0] in each lxc-shell
[0] route add -net 224.0.0.0 netmask 240.0.0.0 dev eth0

Is there a possible workaround I can use to reset the sFlow database
entries to numbers which are more useable? Looks like this uint(?) was set
to -1..

Chris


[1]Installed Software:
openvswitch-1.4.0, sflowtool-3.25, Ubuntu 11.10 Kernel 3.0.0-12 in
VirtualBox, connecting lxc-containers via brctl compatiblity mode.

[2]Reproduce via:

cd ~/openvswitch-1.4.0 && sudo -s
rmmod bridge
insmod ./datapath/linux/openvswitch_mod.ko
insmod ./datapath/linux/brcompat_mod.ko
ovsdb-tool create /usr/local/etc/openvswitch/conf.db
vswitchd/vswitch.ovsschema
ovsdb-server --remote=punix:/usr/local/var/run/openvswitch/db.sock
--remote=db:Open_vSwitch,manager_options --pidfile --detach
ovs-vsctl --no-wait init
ovs-vswitchd --pidfile --detach
ovs-brcompatd --pidfile --detach
brctl addbr br0
ovs-vsctl -- --id=@s create sFlow agent=lo target=\"127.0.0.1:6343\"
header=128 sampling=64 polling=1 -- set Bridge br0 sflow=@s

lxc.conf:
> lxc.utsname = one
> lxc.network.type = veth
> lxc.network.flags = up
> lxc.network.link = br0
> lxc.network.ipv4 = 10.0.0.1/24

mkdir /cgroup
mount -t cgroup cgroup /cgroup
lxc-create -n one -f lxc.conf
lxc-start -n /bin/bash

sflowtool