Edge-Core ECS4660-28F, Management Manual, Page: 573 / 2020

C
HAPTER
14
| Basic Administration Protocols
Connectivity Fault Management
– 573 –
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Frame delay measurement can be made only for two-way
measurements, where the MEP transmits a frame with DM request
information with the TxTimeStampf (Timestamp at the time of sending
a frame with DM request information), and the receiving MEP responds
with a frame with DM reply information with TxTimeStampf copied from
the DM request information, RxTimeStampf (Timestamp at the time of
receiving a frame with DM request information), and TxTimeStampb
(Timestamp at the time of transmitting a frame with DM reply
information):
Frame Delay = (RxTimeStampb-TxTimeStampf)-(TxTimeStampb-
RxTimeStampf)
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The MEP can also make two-way frame delay variation measurements
based on its ability to calculate the difference between two subsequent
two-way frame delay measurements.
P
ARAMETERS
These parameters are displayed:
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MD Index – Domain index. (Range: 1-65535)
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MA Index – MA identifier. (Range: 1-2147483647)
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Source MEP ID – The identifier of a source MEP that will send the
delay-measure message. (Range: 1-8191)
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Target
■
MEP ID – The identifier of a remote MEP that is the target of a
delay-measure message. (Range: 1-8191)
■
MAC Address – MAC address of a remote MEP that is the target of
a delay-measure message. This address can be entered in either of
the following formats: xx-xx-xx-xx-xx-xx or xxxxxxxxxxxx
◆
Count – The number of times to retry sending the message if no
response is received before the specified timeout. (Range: 1-5;
Default: 5)
◆
Packet Size – The size of the delay-measure message.
(Range: 64-1518 bytes; Default: 64 bytes)
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Interval – The transmission delay between delay-measure messages.
(Range: 1-5 seconds; Default: 1 second)
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Timeout – The timeout to wait for a response. (Range: 1-5 seconds;
Default: 5 seconds)