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4.9
the
www.it-ebooks.info
of 24 b
64-bit
with fi
VXLAN
the UD
This p
domain
It s
VXLAN
4.3. NV
Encap
Ano
NVGR
Encaps
Micros
an inte
network
encapsu
encapsu
Etherne
shows
origina
the basic Eth
bits, meaning
UDP field,
elds, source
N. The basic
DP message,
property ena
n. These enca
hould be no
N frame add
VGRE (Net
psulation)
other protoco
RE (Netwo
sulation). It i
oft. This pro
ermediary n
k. In order
ulate the b
ulated in fra
et frame is re
the tunnel w
al frame.
hernet frame
g we can achi
which is th
e address, de
c Ethernet fr
which, itsel
ables us to
apsulations a
oted that th
ds 36 bytes to
Figure 4.8. V
twork Virtu
ol which is al
ork Virtua
s supported
otocol, like t
network bet
to preserve
basic Ethern
ames, to pass
etrieved on th
which is ope
, we add a V
ieve over 16
en encapsul
estination an
rame therefo
lf, is transpo
create VLA
are represente
e overload
o the basic fr
VXLAN encap
ualization u
lso being dri
alization u
by various in
the former, e
tween two
the value o
net frame
s through the
he other side
ened in the I
New-generat
VXLAN iden
million VLA
ated in an E
nd VLAN, a
re forms the
orted in an E
ANs beyond
ed in Figure
is significan
rame.
psulation
using Gen
ven forward
using Gene
ndustrial pla
enables us to
datacenters,
of the VLAN
in an IP
e IP network
e of the netw
P network t
ion Protocols
ntification zo
ANs and then
Ethernet fram
associated w
e “data” part
Ethernet fram
d an Ethern
4.8.
nt because t
eric Routin
by the IETF
eric Routi
ayers, includi
o pass throu
using an
N, we need
packet, its
k. The origin
work. Figure 4
o transport t
91
one
n a
me
with
of
me.
net
the
ng
F is
ing
ing
ugh
IP
to
self
nal
4.9
the
www.it-ebooks.info
