<s>
In	O
a	O
Frame	B-Protocol
Relay	I-Protocol
network	I-Protocol
,	O
committed	B-Protocol
information	I-Protocol
rate	I-Protocol
(	O
CIR	O
)	O
is	O
the	O
bandwidth	O
for	O
a	O
virtual	B-Protocol
circuit	I-Protocol
guaranteed	O
by	O
an	O
internet	O
service	O
provider	O
to	O
work	O
under	O
normal	O
conditions	O
.	O
</s>
<s>
Committed	B-Protocol
data	I-Protocol
rate	I-Protocol
(	O
CDR	O
)	O
is	O
the	O
payload	O
portion	O
of	O
the	O
CIR	O
.	O
</s>
<s>
Frame	B-Protocol
Relay	I-Protocol
carriers	O
define	O
and	O
package	O
CIRs	O
differently	O
,	O
and	O
CIRs	O
are	O
adjusted	O
with	O
experience	O
.	O
</s>
