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NTP 335
Switch A uses this information to set the local clock and to synchronize it with the
clock on Switch B.
Configuring NTP is described in the following sections:
■ Configuring NTP
■ NTP Configuration Examples
Configuring NTP NTP configuration includes the tasks described in the following sections:
■ Configuring NTP Operating Mode
■ Configuring NTP ID Authentication
■ Setting the NTP Authentication Key
■ Setting the Specified Key to Be Reliable
■ Designating an Interface to Transmit the NTP Message
■ Setting the NTP Master Clock
■ Enabling or Disabling an Interface to Receive an NTP Message
■ Setting the Authority to Access a Local Switch
■ Setting Maximum Local Sessions
■ Displaying and Debugging NTP
Configuring NTP Operating Mode
The Switch 8800 can only serve as an NTP client but not as an NTP server.
You can set the NTP operating mode of the Switch 8800 according to its location
in the network, and the network structure. For example, you can set a remote
server as the time server of the local equipment. In this case the local Switch 8800
works as an NTP client. If you set a remote server as a peer of the local Switch
8800, the local equipment operates in symmetric active mode. If you configure an
interface on the local switch to transmit NTP broadcast packets, the local switch
will operate in broadcast mode. If you configure an interface on the local switch to
receive NTP broadcast packets, the local switch will operate in broadcast client
mode. If you configure an interface on the local switch to transmit NTP multicast
packets, the local switch will operate in multicast mode. You may also configure
an interface on the local switch to receive NTP multicast packets, the local switch
will operate in multicast client mode.
The following sections describe how to configure NTP modes:
■ Configuring NTP Server Mode
■ Configuring NTP Peer Mode
■ Configuring NTP Broadcast Server Mode
■ Configuring NTP Broadcast Client Mode
■ Configuring NTP Multicast Server Mode
■ Configuring NTP Multicast Client Mode
Configuring NTP Server Mode Set a remote server whose IP address is
ip-address as the local time server. ip-address specifies a host address other than a