B&B Electronics 856-14205--29 - Manual - Manual (Page 30)

Configuration
25
OPTICS PORT
Ingress Bandwidth
Limit
(CIR)
Monitors the traffic entering the unit (ingress),
discarding traffic that exceeds a fixed Committed
Information Rate (CIR) plus Burst Allocation (BA).
Frames are not held in queue, they either meet the
bandwidth limits and are accepted into the unit or
they are dropped.
Max Burst Allocation
size (BA) The BA size is specified in bits; the # of bits above
the bandwidth limit before packets are thrown
away.
Ingress Burst
Allocation Bandwidth limiting can be set at Ingress of each
port individually by setting the MAX Bandwidth
Limit in bits/sec. and the BA in bits. Traffic in
excess of the bandwidth limit plus BA for any time
interval will be dropped. This function utilizes an
advanced “Leaky Token-Bucket” algorithm to
provide typical resolution under 5% of the set
values at all data rate and frames sizes.
Egress Traffic
Shaping Egress Traffic shaping actively controls the
transmitter and hard limits the maximum frame
rate that can be sent. Frames can be delayed in
the internal buffers of the unit, waiting their turn to