Orolia Spectracom VelaSync 1232, User Manual

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3.
Select the parent interface [eth0-eth5], type in your VLAN ID, and click submit.
Repeat the process as necessary.
Your new VLAN interfaces will now be displayed in the VLAN Setup panel, listed as eth[#].
[VLAN ID].
2.10 Configure NTP
Network Time Protocol (NTP) and Simple Network Time Protocol (SNTP) are client-
server protocols that are used to synchronize time on IP networks. NTP provides greater
accuracy and better error checking capabilities than SNTP does, but requires more
resources.
For many applications, it is not necessary to modify the NTP factory default configuration
settings. It is possible, however, to change most of the settings in order to support specific
NTP applications which may require a non-standard configuration:
These features include MD5 authentication to block NTP access to parts of the network
and to broadcast NTP data to the network’s broadcast address. NTP and SNTP are used to
synchronize time on any computer equipment compatible with the Network Time Pro-
tocol. This includes Cisco routers and switches, UNIX machines, and Windows machines
with suitable clients. To synchronize a single workstation, several freeware or shareware
NTP clients are available on the Internet. The software running on the PC determines
whether NTP or SNTP is used.
When the NTP service is enabled, VelaSync will “listen” for NTP request messages from
NTP clients on the network. When an NTP request packet is received, VelaSync will send
an NTP response time packet to the requesting client. Under typical conditions, VelaSync
can service several thousand NTP requests per second without MD5 authentication
enabled, and at a somewhat lower rate with MD5 authentication enabled.
You can either enable or completely disable the NTP Service. When NTP is disabled, no
NTP time packets will be sent out to the network. When enabled, by default, the NTP Ser-
vice operates in
Unicast mode, i.e. the NTP Service responds to NTP requests only.
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2.10 Configure NTP