Altera Triple Speed Ethernet MegaCore Function User Manual
Page 77
Figure 4-29: PTP Frame over UDP/IPv6
Version | Traffic Class | Flow Label
Payload Length
4 Octet
2 Octets
Source IP Address
16 Octets
Destination IP Address
16 Octets
Source Port
2 Octets
Destination Port = 319 / 320
2 Octets
Hop Limit
Next Header = 0x11
1 Octet
1 Octet
Length/Type = 0x86DD
Source Address
Destination Address
2 Octets
6 Octets
6 Octets
Checksum
Length
2 Octets
2 Octets
flagField
correctionField
transportSpecific | messageType
reserved | versionPTP
reserved
1 Octet
1 Octet
1 Octet
2 Octets
8 Octets
reserved
4 Octets
SourcePortIdentify
10 Octets
sequenceId
2 Octets
controlField
1 Octet
logMessageInterval
1 Octet
TimeStamp
10 Octets
extended bytes
2 Octets
CRC
4 Octets
domainNumber
messageLength
2 Octets
1 Octet
MAC Header
UDP Header
IP Header
PTP Header
(1)
0..1500/9600
Octets
Payload
Note to
:
1. For frames with VLAN or Stacked VLAN tag, add 4 or 8 octets offsets before the length/type field.
Altera Corporation
Functional Description
4-41
PTP Frame over UDP/IPv6
UG-01008
2014.06.30
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