B&B Electronics 858-18121 - Manual - Manual (Page 23)

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Press the down arrow on the computer keyboard to access the additional
configuration commands.
Bandwidth (bw)
Displays settings for Bandwidth configuration.
SFP A/B Ports
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.