Transmitting Delay-Measure Requests - Edge-Core ECS4810-12M Layer 2 Management Manual

Use the Administration > CFM (Transmit Delay Measure) page to send
T
RANSMITTING
periodic delay-measure requests to a specified MEP within a maintenance
D -M
ELAY EASURE
association.
R
EQUESTS
CLI R
"ethernet cfm delay-measure two-way" on page 1336
◆
C
OMMAND
Delay measurement can be used to measure frame delay and frame
◆
delay variation between MEPs.
A local MEP must be configured for the same MA before you can use
◆
this function.
If a MEP is enabled to generate frames with delay measurement (DM)
◆
information, it periodically sends DM frames to its peer MEP in the same
MA., and expects to receive DM frames back from it.
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)
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:
MD Index – Domain index. (Range: 1-65535)
◆
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)
Target
◆
■
■
EFERENCES
U
SAGE
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
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C 14
HAPTER
Connectivity Fault Management