From: Jeffrey Biggs (j.biggs@myactv.net)
Date: Wed Nov 14 2007 - 13:32:33 ART
ntp authentication-key
To define an authentication key for Network Time Protocol (NTP), use the ntp
authentication-key global configuration command. Use the no form of this
command to remove the authentication key for NTP.
ntp trusted-key
To authenticate the identity of a system to which Network Time Protocol
(NTP) will synchronize, use the ntp trusted-key global configuration
command. Use the no form of this command to disable authentication of the
identity of the system.
So the Trusted key tell the router what key to trust.
JB
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Gregory Gombas
Sent: Wednesday, November 14, 2007 10:33 AM
To: Cisco certification
Subject: NTP Trusted Key
Can someone please explain what the trusted key is for? It seems like
a redundant command:
Server:
R1(config)#ntp master 1
R1(config)#ntp authentication-key 1 md5 CISCO
Client:
R2(config)#ntp authenticate <-- enables authentication of the server
R2(config)#ntp authentication-key 1 md5 CISCO <-- Defines a key
R2(config)#ntp trusted-key 1 <-- What the hell does this do?
R2(config)#ntp server 12.0.0.1 key 1 <-- Binds the key to the server
Thanks,
Greg
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