C

CBQ

Class-Based Queuing

CBR

Constant Bit Rate

CBS

Committed Burst Size

CGI

Common Gateway Interface

CIR

Committed Information Rate

CLEC

Competitive Local Exchange Carrier

CMP

Container Managed Persistence

Congestion Window

A congestion window added by slow start to the sender's TCP: the congestion window, called cwnd. When a new connection is established with a host on another network, the congestion window is initialized to one segment (that is, the segment size announced by the other end).