Lantronix SISPM1040-xxxx-L3 Web User Guide
33856 Rev. A https://www.lantronix.com/ 334
PTP > 802.1AS Statistics
This page lets you view 802.1AS Clock Instance Specific Statistics. IEEE 802.1AS is an adaptation of PTP for use
with Audio Video Bridging and Time-Sensitive Networking. TSN requires switches that are 802.1AS compliant to
allow for priority packet scheduling. IEEE 802.1AS was introduced based on IEEE 1588. It specifies a profile for
use of IEEE 1588-2008 for time synchronization over a virtual bridged local area network (as defined by IEEE
802.1Q). This standard enables stations attached to bridged LANs to meet the respective jitter, wander, and time
synchronization requirements for time-sensitive applications.
Instance: At the Clock Instance dropdown select the desired instance (PTP Clock Instance
0-3) or CMLDS (Common Mean Link Delay Service). Note that the CMLDS option allows
multiple PTP implementations in different domains, but sharing a physical port to use receive
link delay information without repeating peer delay messages.
802.1AS Received counters
SyncCount: A counter that increments every time when synchronization information is received.
FollowUpCount: A counter that increments every time when a Follow Up message is received.
PdelayRequestCount: A counter that increments every time when a Pdelay_Req message is received.
PdelayResponseCount: A counter that increments every time when a Pdelay_Resp message is received.
PdelayResponseFollowUpCount: A counter that increments every time when a Pdelay_Resp_Follow_Up
message is received.
AnnounceCount: A counter that increments every time when an Announce message is received.
PTPPacketDiscardCount: A counter that increments every time when a PTP message is discarded.
syncReceiptTimeoutCount: A counter that increments every time when sync receipt timeout occurs.
announceReceiptTimeoutCount: A counter that increments every time when announce receipt timeout occurs.
pdelayAllowedLostResponsesExceededCount: A counter that increments every time the value of the variable
lostResponses exceeds the value of the variable allowedLostResponses.
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