NTS-6001 WEB CONFIGURATION
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server address [options ...]
peer address [options ...]
broadcast address [options ...]
manycastclient address [options ...]
-
These four commands specify the time server name or address to be used and the mode in
which to operate. The address can be either a DNS name or an IP address in dotted-quad
notation. Additional information on association behaviour can be found in the Association
Management page.
server
-
For type s and r addresses (only), this command normally mobilises a persistent client mode
association with the specified remote server or local reference clock. If the pre-empt flag is
specified, a pre-emptible association is mobilised instead.
In client mode the client clock can synchronise to the remote server or local reference clock, but the
remote server can never be synchronised to the client clock. This command should NOT be used for
type b or m addresses.peer
-
For type s addresses (only), this command mobilises a persistent symmetric-active mode
association with the specified remote peer. In this mode the local clock can be synchronised
to the remote peer or the remote peer can be synchronised to the local clock.
This is useful in a network of servers where, depending on various failure scenarios, either the local
or remote peer may be the better source of time. This command should NOT be used for type b, m
or r addresses.
broadcast
-
For type b and m addresses (only), this command mobilises a persistent broadcast mode
association. Multiple commands can be used to specify multiple local broadcast interfaces
(subnets) and/or multiple multicast groups.
Note that local broadcast messages go only to the interface associated with the subnet specified, but
multicast messages go to all interfaces.
In broadcast mode the local server sends periodic broadcast messages to a client population at the
address specified, which is usually the broadcast address on (one of) the local network(s) or a
multicast address assigned to NTP.
The IANA has assigned the multicast group address IPv4 224.0.1.1 and IPv6 ff05::101 (site local)
exclusively to NTP, but other non-conflicting addresses can be used to contain the messages within
administrative boundaries.
Ordinarily, this specification applies only to the local server operating as a sender; for operation as a
broadcast client, see the broadcastclient or multicastclient commands below.
manycastclient
