Safran SecureSync 2400 - Configuring NTP over Anycast (OSPF Ipv4)

Note: NTP over Anycast is not compatible with DHCP, as it is
designed to be used with static addresses only.
Note: IMPORTANT: For Anycast to function, SecureSync must be in
sync to a valid reference, or to itself.
2.15.12.2 Configuring NTP over Anycast (OSPF IPv4)
To setup the NTP over Anycast functionality, using OSPF IPv4:
1. Confirm that your existing network infrastructure is Anycast capable, and
uses OSPF Version 2 (IPv4). Determine the OSPF area.
2.
In the SecureSync Web UI, navigate to MANAGEMENT > Network > NTP
Setup.
3.
In the Actions Panel, click NTP over Anycast.
4.
In the NTP Anycast window, select the General tab.
5.
On the General tab, select IPv4 as the IP Version.
6.
Configure the Anycast Address to be used.
7. Select the port to associate the Anycast service with (depending on the
option card configuration of your unit, there may be only ETH0 available).
8.
In the NTP Anycast window, navigate to the OSPF tab.
9.
On the OSPF tab, check Enable.
10. Setup the OSPF area.
11.
Click Submit.
12.
Select the port address to associate the Anycast service with (because
there may be multiple 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76).
13. 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.)
138
CHAPTER 2 • SecureSync 2400 User Manual Rev. 5.2
2.15 Configure NTP