26.1.2 Support function
The following tables show PTP functions supported by the Switch.
|
Item |
Support |
||
|---|---|---|---|
|
Interface type |
Ethernet interface |
OK |
|
|
Port Channel Interface |
NG |
||
|
Management port |
NG |
||
|
VLAN type |
Port VLAN |
OK |
|
|
Protocol VLAN |
NG |
||
|
MAC VLAN |
NG |
||
|
Frame formats for forwarding PTP messaging |
IEEE802.3-MAC |
NG |
|
|
UDP/IPv4 |
OK |
||
|
UDP/IPv6 |
NG |
||
|
Type of the destination address |
Multicast |
OK |
|
|
unicast |
NG |
||
|
Supported PTP Versions |
PTP Version 2 |
||
|
PTP device type |
Master device |
NG |
|
|
Slave unit |
NG |
||
|
TC |
E2E-TC |
OK |
|
|
P2P-TC |
NG |
||
|
MN |
NG |
||
|
Send time notification method |
E2E |
One-step clock |
OK |
|
Two-step clock |
NG |
||
|
Management function |
NG |
||
Legend OK: Supported; NG: Not supported
- <Structure of this section>
(1) PTP messaging
The following tables describe the messaging and intended use of PTP's E2E.
|
Message type |
Purpose of Use |
|
|---|---|---|
|
Master Decision |
Announce |
Messages Used for PTP Master Decision Periodic transmission is performed at the interval (Announce Interval) set on the master and slave devices. |
|
Time Synchronization |
Sync |
Time synchronization messages from the master unit to the slave unit Periodic transmission is performed at the interval (Sync Interval) set on the master device. |
|
Follow_Up |
Time synchronization messages from the master unit to the slave unit |
|
|
Average transmission delay time measurement |
Delay_Req |
Message that measures the average transmission delay time between the master and slave devices |
|
Delay_Resp |
Message that measures the average transmission delay time between the master and slave devices |
|
|
Acquire and set PTP device data |
Management |
Messages for acquiring and setting PTP devices* |
#: The Switch supports only NOT_SUPPORTED replies.