Configuring Anycast Via Ntp Expert Mode - Spectracom SecureSync 1200 User Reference Manual

2.15 Configuring NTP
11.
Input the neighbor's AS number.
12.
Click Submit .
13.
Select the port address to associate the Anycast service with (because there may be mul
tiple addresses on a single port), and click Submit. If no addresses appear, an IP
address must be added to the port (see "Network Ports" on page 56).
14.
Next, specify the maximum
Timeout
dow": A small window will cause SecureSync to deliver a more accurate time window,
but also will cause it to quickly withdraw from the Anycast server pool, i.e. declare itself
an invalid reference. (For more information about TFOM, see "Configuring the Oscil
lator" on page 196.)
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 196).

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 127), which allows you to write directly into the Anycast configuration files
(
zebra.conf
The
zebra.conf
required for IPv4 OSPF only, the
bgpd.conf
Anycast.
1.
To access Expert Mode, navigate to MANAGEMENT > NTP Setup .
2.
Enable the switch for Expert Mode in the panel NTP Services .
122
TFOM Setting
value. These two parameters determine SecureSync's accuracy "tolerance win
; ;
ospfd.conf ospf6d.conf
file is required for both IPv4, and IPv6 Anycast. The
ospf6d.conf
file has multiprotocol functionality, hence it can be used for both IPv4, and IPv6
Caution: Expert Mode should only be utilized by advanced users, as incorrectly
altering the Anycast files can cause Anycast to stop working.
Any configurations made in Expert Mode will be lost as soon as Expert
Caution:
Mode is disabled.
(Time Figure of Merit), and the
and
bgpd.conf
file is required for IPv6 OSPF only, and the
CHAPTER •
2 SecureSync User Reference Guide Rev. 23
Holdover
).
file is
ospfd.conf