3com 8807 Reference Guide

C

HAPTER

 55: NTP C

ONFIGURATION

 C

OMMANDS

By default, there is no authentication key.

Only MD5 authentication is supported for the NTP authentication key settings.

# Set MD5 authentication key 10 as 3com.

<SW8800> system-view

 

System View: return to User View with Ctrl+Z.

 

[SW8800] ntp-service authentication-keyid 10 authentication-mode md5 3com 

ntp-service broadcast-client

undo ntp-service broadcast-client

VLAN interface view

None

Use the ntp-service broadcast-client command to configure NTP broadcast 
client mode.

Use the undo ntp-service broadcast-client command to disable the NTP 
broadcast client mode.

By default, the NTP broadcast client mode is disabled.

Designate an interface on the local Ethernet Switch to receive NTP broadcast 
messages and operate in broadcast client mode. The local Ethernet Switch listens 
to the broadcast from the server. When it receives the first broadcast packet, it 
starts a brief Client/Server mode to switch messages with a remote server for 
estimating the network delay. Thereafter, the local Ethernet Switch enters 
Broadcast Client mode and continues listening to the broadcast and synchronizes 
the local clock according to the arrived broadcast message.

# Configure to receive NTP broadcast packets through Vlan-Interface1.

<SW8800> system-view

 

System View: return to User View with Ctrl+Z.

 

[SW8800] interface vlan-interface1

 

[3Com-Vlan-interface1] ntp-service broadcast-client 

ntp-service broadcast-server [ authentication-keyid keyid version number ]

undo ntp-service broadcast-server