B&B Electronics 858-18121 - Manual - Manual (Page 24)

20
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 be sent. If the internal
buffers are full, excess traffic will be dropped. The Unit
Rate Control can be used to alleviate this.
TX1/2
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 BW 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
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 be sent. If the internal buffers are full, excess
traffic will be dropped. The Unit Rate Control can be
used to alleviate this.