VDEQ(1)VDEQ(1)NAMEvdeq - Virtual Distributed Ethernet wrapper for QEMU/KVM virtual
machines
SYNOPSISvdeq qemu [ --mod octalmode ] QEMU_OPTIONS -net
vde[,vlan=n][,sock=socketpath][,port=n] QEMU_OPTIONS
vdeq kvm [ --mod octalmode ] KVM_OPTIONS -net vde[,vlan=n][,sock=sock‐
etpath][,port=n] KVM_OPTIONS
vde{qemu_name} [ --mod octalmode ] QEMU_OPTIONS -net
vde[,vlan=n][,sock=socketpath][,port=n] QEMU_OPTIONS
OLD SYNOPSISvdeq qemu [ --mod octalmode ] [ -sock socketpath [ ,socketpath [ ,...
] ] ] [ qemu_args ]
vde{qemu_name} [ -sock socketpath [ ,socketpath [ ,... ] ] ] [
qemu_args ]
DESCRIPTIONvdeq is a wrapper to start a QEMU/KVM virtual machine connected to a
VDE network. It uses the qemu/kvm -tun-fd parameter to set up the
connection with a vde_switch.
The command
vdeq qemu -b c -hda=sampledisk
starts a qemu machine which boots from the sampledisk image and has a
ne2000 ethernet interface connected to the standard vde_switch. The
command
vdeq kvm -b c -hda=sampledisk
starts a kvm machine which boots from the sampledisk image and has a
ne2000 ethernet interface connected to the standard vde_switch.
It is also possible to create symbolic links to the vdeq executable to
have a simpler command. If the link has a name that begins with vde the
remaining part of the name is taken as the qemu command. For example if
vdeq is linked to vdeqemu:
vdeqemu -b c -hda=sampledisk
starts qemu as above. If vdeq is linked to vdekvm:
vdekvm -b c -hda=sampledisk
starts kvm with the same parameters.
The new syntax is consistent with the new Qemu 0.8.0 network parame‐
ters. Using vdeq is possible to specify a vde interface in the same
way as user,tap or socket interfaces. The sock= parameter can be used
to use a specific socket. Please note that what qemu names as vlan is
not related to the 802.1q VLAN managed by the vde_switch. port= can be
used to specify the port of the switch, otherwise the first allocatable
port is assigned. The following command run a qemu VM with two ether‐
net interface connected to the standard switch and to the switch with
local socket "/tmp/my.ctl", port 10, respectively
vde qemu -net nic,vlan=0 -net nic,vlan=1 -net vde,vlan=0 -net
vde,vlan=1,sock=/tmp/my.ctl,port=10
vdeqemu -net nic,vlan=0 -net nic,vlan=1 -net vde,vlan=0 -net
vde,vlan=1,sock=/tmp/my.ctl,port=10
The following command run a kvm VM with two ethernet interface con‐
nected to the standard switch and to the switch with local socket
"/tmp/my.ctl", port 10, respectively
vde kvm -net nic,vlan=0 -net nic,vlan=1 -net vde,vlan=0 -net
vde,vlan=1,sock=/tmp/my.ctl,port=10
vdekvm -net nic,vlan=0 -net nic,vlan=1 -net vde,vlan=0 -net
vde,vlan=1,sock=/tmp/my.ctl,port=10
The old syntax can be used with Qemu 0.8.0 but all the vde interfaces
are assigned to vlan 0.
vdeq qemu -sock /tmp/vde.ctl,/tmp/my.ctl -b c -hda=sampledisk
vdeqemu -sock /tmp/vde.ctl,/tmp/my.ctl -b c -hda=sampledisk
both start qemu with one ethernet interface connected both to the stan‐
dard switch and to the switch with local socket "/tmp/my.ctl".
OPTIONS--mod octalmode, specify the mode for comm socket.
-sock socketpath, specify the UNIX socket to be used by local programs
for joining the VDE. The default value is "/tmp/vde.ctl" It is
also possible to indicate several socketpath (comma separated,
no blanks): in this case several interfaces are defined. The
first socketpath is connected to the first ne2k interface and so
on.
-h, -help, --help
print a Usage help.
NOTE
Qemu has changed its syntax for networking (cvs Nov.15 2005). As a
temporary solution use vdeoq and vdeoqemu instead of vdeq and vdeqemu
if you are running a qemu with the old syntax.
By default qemu uses the same MAC address for every virtual machine, so
if you plan to use several instances of qemu be sure to explicitly set
a different MAC address for each virtual machine. While generating your
address beware to not use broadcast/multicast reserved MACs, ethernet
rules say: the multicast bit is the low-order bit of the first byte,
which is "the first bit on the wire". For example 34:12:de:ad:be:ef is
an unicast address, 35:12:de:ad:be:ef is a multicast address (see ETH‐
ERNET MULTICAST ADDRESSES section in http://www.iana.org/assign‐
ments/ethernet-numbers for more informations).
NOTICE
Virtual Distributed Ethernet is not related in any way with www.vde.com
("Verband der Elektrotechnik, Elektronik und Informationstechnik" i.e.
the German "Association for Electrical, Electronic & Information Tech‐
nologies").
SEE ALSOvde_switch(1), vde_plug(1), vde_plug2tap(1), dpipe(1).
AUTHOR
VDE is a project by Renzo Davoli <renzo@cs.unibo.it>
Virtual Distributed Ethernet December 6, 2006 VDEQ(1)
