User Manual
COGE5, COGE5-F
page 48 of 110
© KEYMILE December 2015
EN/LZTBU 372 144/3 RA
110
Functional Description
5.4.3.3
Transparent Clock Application
A Transparent Clock network element has several PTP ports, one acting as
Slave port and all others acting as Master ports.
Risk of operating trouble!
Transparent ports are not operable with the port types “MPLS-TP” and
“PWAC”.
→ A transparent PTP port must be configured to the Customer VLAN
Port (CVP) port type. The bridge parameters must assure the packet
forwarding between all transparent ports.
Please note:
A Transparent Clock cannot be used as PTP source for the PETS synchroni-
zation.
→ In order to synchronize the PETS to a Transparent Clock, connect a
Transparent Clock (Master) to an (additional) COGE5 front port con-
figured as Ordinary/Boundary Clock (Slave).
Figure 15:
PTP Transparent Clock
For a Transparent Clock network element the XMC20 and the COGE5 have
to be configured as follows:
• COGE5, AP: /unit-x, Configuration - PTP - Clock Type:
− Disabled (preferred).
− Boundary Clock.
− Ordinary Clock.
• COGE5, AP: /unit-x/port-y, Configuration - PTP - PTP Mode:
− Transparent Clock.
• COGE5, AP: /unit-x/port-y, Configuration - PTP - Role:
− Slave (for ports with a fixed Slave role).
− Master (for ports with a fixed Master role).
Front port-y
PTP mode:
Transparent Clock
Front port-x
PTP port role:
Slave
PTP port role:
Master
PTP clock type:
Disabled
PTP mode:
Transparent Clock
Front port-z
PTP port role:
Master
Residence
time
correction
Residence
time
correction
PTP mode:
Transparent Clock
COGE5
