Transition Networks
S4224 Web User Guide
33558 Rev. C
Page 367 of 669
Dlm
Configurable member
delayMechanism
: the delay mechanism used for the port (e.g.,
p2pt
for Peer
to Peer Transparent), where:
e2e
: End to end delay measurement.
p2p
: Peer to peer delay measurement.
dsbl
: Delay is disabled.
Dlm
can be defined per port in an Ordinary/Boundary clock. In a transparent clock, all ports use the
same delay mechanism, as determined by the clock type.
MPR
The interval for issuing
Delay_Req
messages for the port in E2e mode. This value is announced from
the master to the slave in an announce message. The value is reflected in the MDR field in the Slave.
This is the interval for issuing
Pdelay_Req
messages for the port in P2P mode.
The valid range is
-7
to
5
.
Note
: The interpretation of this parameter has changed from v 1.2 to v 2.0. In earlier versions the
value was interpreted relative to the Sync interval; this was a violation of the standard, so now the
value is interpreted as an interval (i.e., MPR = 0 => 1 Delay_Req pr sec, independent of the Sync
rate).
Delay Asymmetry
If the transmission delay for a link is not symmetric, the asymmetry can be configured here (e.g.,
0.000,000,000
). See IEEE 1588 Section 7.4.2 Communication path asymmetry.
The valid range is
-1000000
to
1000000
.
Ingress Latency
Ingress latency measured in ns (nanoseconds), as defined in IEEE 1588 Section 7.3.4.2.
The valid range is
-1000000
to
1000000
.
Egress Latency
Egress latency measured in ns (nanoseconds), as defined in IEEE 1588 Section 7.3.4.2.
The valid range is
-1000000
to
1000000
.
Version
The current implementation supports PTP version
2
(e.g., version 2) only.
Buttons
Save
: Click to save changes.
Reset
: Click to undo any changes made locally and revert to previously saved values.
