Ceragon FibeAir IP-20 All-Outdoor Series, User Manual

Page: 369 / 825

User Guide for FibeAir® IP-20 All-Outdoor Products, CeraOS 10.5
Page 369 of 825
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10 Select a radio interface or Multi-Carrier ABC group and click Edit . The 1588
Transparent Clock – Edit page opens.
Figure 285: 1588 Transparent Clock – Edit Page
11 In the Port direction field, select Upstream or Downstream . This field must be
set to different values on the two sides of the link, so that if you set the local
side to
Upstream , you must set the remote side to Downstream , and vice
versa. Otherwise than that, it does not matter how you set this field.
12 Click Apply , then Close .
13 1588 packets should be mapped to CoS 7. By default, 1588 packets are not
mapped to any CoS. To map 1588 packets to CoS 7, you must disable CoS
preservation for 1588 packets. This must be performed via CLI, using the
following command:
root> ethernet generalcfg ptp-tc cos-preserve set admin disable
14 To map 1588 packets to CoS 7, enter the following command:
root> ethernet generalcfg ptp-tc cos-preserve cos value 7
After you enter these commands, 1588 packets will automatically be mapped
to CoS 7.
Note: If necessary, you can use the
ethernet generalcfg ptp-tc cos-
preserve cos value
command to map a different CoS value (0-7) to
1588 packets, but it is recommended to map 1588 packets to CoS 7.
To disable Transparent Clock synchronization:
1 Select
Sync > 1588 > General Configuration . The 1588 – General Configuration
page opens ( Figure 283 ).
2 In the 1588 PTP field, select Disable .
3 Click Apply .
Note: Disabling 1588 PTP disables both Transparent Clock and Boundary
Clock, and can drastically affect time synchronization performance in
the entire network.