VeEX VePal TX130M+, Руководство пользователя

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16.1.2 Bandwidth Profile
The Bandwidth Profile specifies how much traffic the customer is authorized to transmit and how the frames are prioritized within
the network. Under the Bandwidth tab, the user specifies the following bandwidth criteria:
Frame Size:
Input a fixed frame size within the range of 64-10000 bytes.
CIR
: Committed Information Rate. This is the guaranteed maximum rate at which the customer can send frames that are
assured to be forwarded through the network without being dropped. Tap on the box to enter a rate and choose between
IR Mbps
or
ULR Mbps
. Allowed values range from 0.01Mbps to the line bandwidth.
Information Rate (IR):
Measures the average Ethernet frame rate starting at the MAC address field and ending at
the CRC.
Utilized Line Rate (ULR):
Measures the average Ethernet frame rate starting with the overhead and ending at the
CRC.
V-SAM Services - Bandwidth
Excess Information Rate (EIR):
Maximum rate above the CIR at which the customer can send frames that will be
forwarded on a best effort basis, but may be dropped in the event of congestion within the network. The combined CIR
and EIR must not exceed the line bandwidth. Traffic beyond CIR + EIR will be dropped when it enters the carrier's
network. Tap on the box to enter a rate. EIR is expressed in terms
IR Mbps
or
ULR Mbps
. Select a term to express EIR
or select
Disable
to disable the test.
Traf. Policing:
Enable or Disable the traffic policing test. For this test, traffic is transmitted at 25% higher than the
CIR+EIR. The Policing test fails if the higher traffic rate is allowed through the network.
CBS
and
EBS
: Committed Burst Size (CBS) and Excess Burst Size (EBS).
CBS can be enabled without enabling EBS
If EBS is enabled, then CBS is automatically enabled too
Values between 4 KBytes and 100 KBytes can be input for both CBS and EBS
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16.1.3 Thresholds
The user establishes Pass/Fail test criteria for the following Service Acceptance Criteria. Values define the minimum requirements
to ensure that the service meets the Service Level Agreement (SLA):
FLR:
Ratio of lost frames to the total transmitted frames.
FTD:
Measures the transfer time that the frames can take to travel from source to destination. Values are measured in us,
ms, or sec. Input a value within the digital range of .001-999 and 1 us-999sec. The user can also choose to
Disable
the
FTD threshold evaluation. FTD will be measured regardless, but the value will not contribute toward passing or failing the
service.
IFDV:
Measures the frame jitter.
AVAIL:
Minimum percentage of service availability allowed to still be compliant with the SLA. The service becomes
unavailable if more than 50% of the frames are errored or missing in a one second interval. Availability is only guaranteed
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