Date and Time Commands
Page 346 7750 SR OS Basic System Configuration Guide
authenticate — Specifies whether or not to require authentication of NTP PDUs. When enabled,
NTP PDUs are authenticated upon receipt.
multicast
Syntax multicast [version version] [key-id key-id]
no multicast
Context config>system>time>ntp
Description
This command configures NTP the node to transmit multicast packets on the
CPMCCM MGMT
port. Broadcast and multicast messages can easily be spoofed; authentication is strongly
recommended.
The no form of this command removes the multicast address from the configuration.
Parameters version version — Specifies the NTP version number that is generated by this node. This parameter
does not need to be configured when in client mode in which case all three versions are accepted.
Values 2 — 4
Default 4
key-id key-id — Specifies the configured authentication key and authentication type used by this
version to transmit NTP packets. If this command is omitted from the configuration, packets are
sent un-encrypted.
Values 1 — 255
Default None
multicastclient
Syntax multicastclient [authenticate]
no multicastclient
Context config>system>time>ntp
Description
This command configures the node to receive multicast NTP messages on the
CPMCCM MGMT
port. If multicastclient is not configured, received NTP multicast traffic will be ignored. Use the show
command to view the state of the configuration.
The no construct of this message removes the multicast client for the specified interface from the
configuration.
Parameters authenticate — This optional parameter makes authentication a requirement. If authentication is
required, the authentication key-id received must have been configured in the “authentication-
key” command, and that key-id’s type and key value must also match.
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