The Ptp Statistics Panel - Spectracom PRISMA VelaSync User Manual

Management Mechanism tab
Network tab
2.11.1.2 The PTP Statistics Panel
This panel provides statistics for each Ethernet port. If the PTP is set to OFF for a specific port,
this screen will not display any information.
All statistics shown are based on the traffic that is detectable by VelaSync, i.e. in a Unicast envir-
onment, VelaSync may only detect traffic that is addressed to it, based on switch configuration.
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Master is active as the Best Master on the network.
When set to OFF, the Master will act as an active master no matter whether or not other
masters are present. This may be required for certain PTP profiles.
Clock Priority 1 : [0 to 255] (0 is highest priority. Default is 128 for both priority values.
This is usually the priority value that a Slave is set to.) See IEEE 1588-2008, Section
8.10.1, 8.10.2.
Clock Priority 2 : [0 to 255] (same as above).
Current UTC Offset : to convert to civil time.
Network Transport : [Ethernet, IPv4/UDP] Selects the transport protocol used for PTP pack-
ets.
Request Peer Information : [ON/OFF] Enable/disable management requests.
Request Peer Inforamtion Rate : [0.2 = one request every five seconds] Request rate in
seconds for PTP Management messages.
Respond to Peer Information Requests : [ON/OFF] Enable/disable management responses.
Multicast Ttl : [1 through 255] Time-to-live (packet lifespan) — Sets the TTL field for PTP
packets except for Peer-to-Peer packets for which TTL is forced to 1 as specified in IEEE
Std 1588-2008 Annex D.3.
Unicast Ttl : [64] Time to live for Unicast packets.
2.11 Configuring PTP
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