This attribute provides the actual Committed Information Rate
(CIR) enforced for this DLCI. This number is in units of 800 bits/
sec, since that is the internal resolution of Passport rate
enforcement. If rateEnforcement is off, then this number does not
have meaning. Normally, this attribute matches the provisioned CIR
for the DLCI. But when Rate Adaptation is active, then this number
will vary to represent the actual Allowed CIR at the moment that
this attribute is collected.