Orolia Spectracom VelaSync 1232, User Manual

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The Unicast mode is activated at the initiative of the Slaves. Each Slave, which wants to
run in Unicast mode, shall first negotiate Unicast contracts with the Master.
Sync Rate : The rate at which Sync messages are sent, in packets per second. [1 =
1 packet/sec.; 2 = 2 packets/sec.; 0.5 = 1 packet/2 sec.]
Announce Rate : [see Sync Rate above] The rate at which Announce messages are
sent, in packets per second.
Delay Req Rate : Interval between request messages sent by the slave to the mas-
ter.
Best Master Clock Algorithm : [On or OFF] When set to ON, the Master will listen
for traffic from other Masters and become passive if another master on the network
has better credentials according to the Best Master Clock Algorithm (Section 9.3 of
IEEE 1588-2008). A passive master will not transmit any protocol messages as long
as another 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 val-
ues. This is usually the priority value that a Slave is set to.) See IEEE 1588-2008, Sec-
tion 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 packets.
Management Mechanism tab
Request Peer Information : [ON/OFF] Enable/disable management requests.
Request Peer Information 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.
Network tab
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 spe-
cified in IEEE Std 1588-2008 Annex D.3.
2.11 Configuring PTP
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