EXFO FTB-8500 Series for FTB-500 - Manual (Page 346)

EtherSAM Tabs
332 FTB-8500 Series and FTB-8120NGE/8130NGE
Services (Configuration)

CIR+EIR sets the best effort allowed traffic for the service. The
EIR (Excess Information Rate) value is equal to the “CIR+EIR” value
minus “CIR”. The CIR+EIR check box is cleared by default.

Rate Unit allows the selection of Mbit/s (default) or Gbit/s as the rate
unit for CIR, CIR+EIR, Ramp Traffic Policing Rate, and Burst Max
Rate.
Note: Changing a criteria value (CIR, CIR+EIR, Ramp Traffic Policing, or Burst
Max Rate) may affect the other criteria values in order to comply to the
following rules:
CIR  CIR+EIR  Ramp Traffic Policing Rate  Line Rate
CIR  CIR+EIR  Burst Max Rate  Line Rate
However, make sure that the criteria values comply to the following rule
with an adequate margin, as per ITU-T Y.1564 standard, for a burst test to
be valid:
CIR  CIR+EIR  Burst Max Rate  Line Rate
Note: The minimum rate is 1Mbit/s when the Frame Size is Random.
Burst Size

CBS sets the maximum committed burst size to which services’ frames
will be sent and be CIR-compliant. The CBS minimum and maximum
values are affected by the CIR, Burst Max Rate, and Frame Size
values. CBS is only available when Burst Test (see page 326) and CIR
are enabled.

EBS sets the maximum excess burst size to which services’ frames will
be sent and be CIR+EIR compliant. The EBS minimum and maximum
values are affected by the CIR+EIR, Burst Max Rate, and Frame Size
values. EBS is only available when Burst Test (see page 326) and
CIR+EIR are enabled.

Burst Unit allows the selection of Bytes (default) or ms as the burst
size unit for CBS and EBS.