<s>
A	O
switch	B-Protocol
virtual	I-Protocol
interface	I-Protocol
(	O
SVI	O
)	O
represents	O
a	O
logical	O
layer-3	O
interface	O
on	O
a	O
switch	O
.	O
</s>
<s>
On	O
layer-3	B-Application
switches	I-Application
it	O
is	O
accomplished	O
by	O
the	O
creation	O
of	O
layer-3	O
interfaces	O
(	O
SVIs	O
)	O
.	O
</s>
<s>
SVI	O
or	O
VLAN	O
interface	O
,	O
is	O
a	O
virtual	O
routed	O
interface	O
that	O
connects	O
a	O
VLAN	O
on	O
the	O
device	O
to	O
the	O
Layer	O
3	O
router	B-Protocol
engine	O
on	O
the	O
same	O
device	O
.	O
</s>
<s>
Allow	O
traffic	O
to	O
be	O
routed	O
between	O
VLANs	O
by	O
providing	O
a	O
default	B-Protocol
gateway	I-Protocol
for	O
the	O
VLAN	O
.	O
</s>
<s>
Much	O
faster	O
than	O
router-on-a-stick	B-Protocol
,	O
because	O
everything	O
is	O
hardware-switched	O
and	O
routed	O
.	O
</s>
<s>
No	O
need	O
for	O
external	O
links	O
from	O
the	O
switch	O
to	O
the	O
router	B-Protocol
for	O
routing	O
.	O
</s>
<s>
Layer	O
2	O
EtherChannels	B-Protocol
can	O
be	O
used	O
between	O
the	O
switches	O
to	O
get	O
more	O
bandwidth	O
.	O
</s>
