LIBVDEPLUG_SWITCH(1) General Commands Manual LIBVDEPLUG_SWITCH(1)
NAME
libvdeplug_switch - multiplexing vdeplug module: switch
SYNOPSIS
libvdeplug_switch.so
DESCRIPTION
This is a libvdeplug multiplex module implementing a vde switch.
This module of libvdeplug4 can be used in any program supporting vde
like vde_plug, kvm, qemu, user-mode-linux and virtualbox.
The vde_plug_url syntax of this module is the following:
switch://[path]
switch://[path][[OPTION][/OPTION][/OPTION]...]
If path is omitted the path of the switch is /tmp/vdenode_$USERNAME
(e.g. /tmp/vdenode_john if the username is john).
This switch supports 801.1Q vlan as a trunk switch, i.e. all the VLAN
tagged packets are forwarded as such. The forwarding table uses a key
including both the MAC address and th VLAN id.
OPTIONS
hashsize=NUM
set the size of the forwarding hash table. (default value 256)
expiretime=SECONDS
set the expire time of the forwarding table entries. (default
value 120)
hashseed=NUM
set a hash seed, in case the hash function generates too many
collisions.
mode=MODE
define the permissions for the switch (see chmod). MODE is an
octal number. The standard permission mask is: 0600 (only pro-
cesses owning to the same user can join the network).
dirmode=DIRMODE
define the permissions for the switch control directory(see
chmod). MODE is an octal number. If omitted, is computed from
mode.
grp=GROUP
define the group ownership of the switch.
EXAMPLES
switch:///tmp/switch
Other virtual machines, namespaces or vde_plug can join this switch us-
ing vde:///tmp/switch or simply /tmp/switch
switch:///tmp/switch[mode=0666/hashsize=1024]
It is the same switch, but everybody is allowed to connect their pro-
cesses and the hash table has 1024 entries.
The null plug can be used to create a stand-alone vde switch:
vde_plug null:// switch:///tmp/myswitch
The following command creates a switch connected to a tap virtual in-
terface
vde_plug tap://mytap switch:///tmp/myswitch
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 ALSO
vde_plug(1),
Virtual Distributed Ethernet April 30, 2017 LIBVDEPLUG_SWITCH(1)
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