Common Configuration Tasks
Page 256 7750 SR OS Basic System Configuration Guide
NTP
Network Time Protocol (NTP) is defined in RFC 1305, Network Time Protocol (Version 3)
Specification, Implementation and Analysis. It allows for participating network nodes to keep time
more accurately and maintain time in a synchronized manner between all participating network
nodes.
NTP time elements include:
• Authentication-check on page 256
• Authentication-key on page 257
• Broadcast on page 257
• Broadcastclient on page 258
• Multicast on page 259
• Multicastclient on page 259
• NTP-Server on page 260
• Peer on page 260
• Server on page 261
Authentication-check
The authentication-check command provides for the option to skip the rejection of NTP PDUs that
do not match the authentication key or authentication type requirements. The default behavior
when authentication is configured is to reject all NTP protocol PDUs that have a mismatch in
either the authentication key-id, type, or key.
When authentication-check is configured, NTP PDUs are authenticated on receipt. However,
mismatches cause a counter to be increased, one counter for key-id, one for type, and one for key
value mismatches.
CLI Syntax: config>system>time>ntp
authentication-check
Example
: config>system>time>ntp#
config>system>time>ntp# authentication-check
config>system>time>ntp# no shutdown
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