<s>
Communications	B-Application
Controller	I-Application
for	I-Application
Linux	I-Application
(	O
Communications	B-Application
Controller	I-Application
for	I-Application
Linux	I-Application
on	O
System	O
z	O
or	O
CCL	O
)	O
is	O
an	O
IBM	O
software	O
product	O
announced	O
in	O
2005	O
that	O
runs	O
under	O
Linux	B-Application
on	I-Application
IBM	I-Application
Z	I-Application
and	O
emulates	O
an	O
IBM	B-Device
37xx	I-Device
communications	O
controller	O
.	O
</s>
<s>
CCL	O
runs	O
unmodified	O
IBM	B-Protocol
Network	I-Protocol
Control	I-Protocol
Program	I-Protocol
(	O
NCP	O
)	O
to	O
allow	O
consolidation	O
of	O
an	O
SNA	B-Architecture
network	O
infrastructure	O
to	O
IP	O
.	O
</s>
<s>
According	O
to	O
IBM	O
"	O
SNA	B-Architecture
traffic	O
enters	O
and	O
leaves	O
CCL	O
as	O
SNA	B-Architecture
network	O
flows	O
over	O
an	O
OSA	O
adapter	O
.	O
</s>
<s>
However	O
,	O
your	O
wide	O
area	O
network	O
infrastructure	O
does	O
not	O
need	O
to	O
be	O
SNA	B-Architecture
.	O
</s>
<s>
You	O
can	O
consolidate	O
your	O
SNA	B-Architecture
traffic	O
and	O
use	O
tunneling	O
such	O
as	O
data	B-Protocol
link	I-Protocol
switching	I-Protocol
(	O
DLSw	B-Protocol
)	O
to	O
encapsulate	O
the	O
SNA	B-Architecture
communication	O
over	O
an	O
IP	O
network.	O
"	O
</s>
<s>
CCL	O
supports	O
Ethernet	O
and	O
Token	B-Device
Ring	I-Device
local	B-General_Concept
area	I-General_Concept
network	I-General_Concept
(	O
LAN	B-General_Concept
)	O
connectivity	O
directly	O
,	O
and	O
other	O
connectivity	O
through	O
a	O
DLSw	B-Protocol
router	O
.	O
</s>
<s>
X.25	B-Protocol
requires	O
IBM	O
's	O
NPSI	O
software	O
plus	O
a	O
third	O
party	O
package	O
.	O
</s>
<s>
CCL	O
does	O
not	O
support	O
Bisync	B-Protocol
or	O
start-stop	O
.	O
</s>
