Safran SecureSync 2400 - 2.15.12.5 Configuring Anycast Via NTP Expert Mode

14. Next, specify the maximum TFOM Setting (Time Figure of Merit), and the
Holdover Timeout value. These two parameters determine SecureSync's
accuracy "tolerance window": A small window will cause SecureSync to
deliver a more accurate time window, but also will cause it to quickly with-
draw from the Anycast server pool, i.e. declare itself an invalid reference.
(For more information about TFOM, see "Configuring the Oscillator" on
page252.)
Navigate to Management > Disciplining, and click the GEAR icon in the
top-right corner of the Status panel.
15.
Set the value Maximum TFOM for Sync to4 (this will make SecureSync to
go out of sync if the phase error is greater than 1μs).
16.
Set the value for Holdover Timeout to 10s, to allow SecureSync to exit
holdover quickly.
17.
Leave the Phase Error Limit at 0, and do not check any of the checkboxes
(or, for more information, see "Configuring the Oscillator" on page252).
2.15.12.5 Configuring Anycast via NTP Expert Mode
Advanced Anycast configuration is possible via the NTP Expert Mode (see also
"NTP Expert Mode" on page146), which allows you to write directly into the
Anycast configuration files (zebra.conf; ospfd.conf; ospf6d.conf and bgp-
d.conf).
The zebra.conf file is required for both IPv4, and IPv6 Anycast. The ospfd.conf
file is required for IPv4 OSPF only, the ospf6d.conf file is required for IPv6 OSPF
only, and the bgpd.conf file has multiprotocol functionality, hence it can be used
for both IPv4, and IPv6 Anycast.
Caution: Expert Mode should only be utilized by advanced users, as
incorrectly altering the Anycast files can cause Anycast to stop work-
ing.
Caution: Any configurations made in Expert Mode will be lost as
soon as Expert Mode is disabled.
1.
To access Expert Mode, navigate to MANAGEMENT > NTP Setup.
2.
Enable the switch for Expert Mode in the panel NTP Services.
2.15 Configure NTP
CHAPTER 2 • SecureSync 2400 User Manual Rev. 5.2
141