<s>
An	O
Ethernet	B-Protocol
virtual	I-Protocol
connection	I-Protocol
or	O
Ethernet	O
virtual	O
circuit	O
(	O
EVC	O
)	O
defines	O
a	O
data	B-Protocol
link	I-Protocol
layer	I-Protocol
bridging	O
architecture	O
that	O
supports	O
Ethernet	O
services	O
.	O
</s>
<s>
An	O
EVC	O
is	O
defined	O
by	O
the	O
Metro-Ethernet	O
Forum	O
(	O
MEF	O
)	O
as	O
an	O
association	O
between	O
two	O
or	O
more	O
user	O
network	O
interfaces	O
that	O
identifies	O
a	O
point-to-point	B-Architecture
or	O
multipoint-to-multipoint	O
path	O
within	O
the	O
service	O
provider	O
network	O
.	O
</s>
<s>
A	O
bridge	O
domain	O
is	O
a	O
local	O
broadcast	O
domain	O
that	O
exists	O
separately	O
from	O
VLANs	B-General_Concept
.	O
</s>
