System Command Reference
Page 358
7950 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 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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Страница 502: ...Index Page 502 7950 SR OS Basic System Configuration Guide system parameters 252 system time elements 256 timing 294...