3Com 8800 Configuration Manual page 725

3Com Switch 8800 Configuration Guide
II. Configuring NTP Peer Mode
Set a remote server whose ip address is ip-address as the peer of the local equipment.
In this case, the local equipment operates in symmetric active mode. ip-address
specifies a host address other than a broadcast, multicast or reference clock IP
address. In this mode, both the local Ethernet Switch and the remote server can
synchronize their clocks with the clock of opposite end.
Perform the following configuration in system view.
Table 49-2 Configure NTP peer mode
Configure NTP peer mode
Cancel NTP peer mode
NTP version number number ranges from 1 to 3 and defaults to 3; the authentication
key ID keyid ranges from 1 to 4294967295; interface-name or interface-type
interface-number specifies an interface, from which the source IP address of the NTP
packets sent from the local Ethernet Switch to the peer will be taken, the interface can
be VLAN interface and Loopback interface; priority indicates the peer will be the first
choice for time server.
III. Configuring NTP Broadcast Server Mode
Designate an interface on the local Ethernet Switch to transmit NTP broadcast packets.
In this case, the local equipment operates in broadcast mode and serves as a
broadcast server to broadcast messages to its clients regularly.
Perform the following configuration in VLAN interface view.
Table 49-3 Configure NTP broadcast server mode
Configure NTP broadcast server mode
Cancel NTP broadcast server mode
NTP version number number ranges from 1 to 3 and defaults to 3; the authentication
key ID keyid ranges from 1 to 4294967295; This command can only be configured on
the interface where the NTP broadcast packets will be transmitted.
Operation
Operation
Command
ntp-service unicast-peer ip-address [ version
number | authentication-key
source-interface { interface-name | interface-type
interface-number } | priority ]*
undo ntp-service unicast-peer ip-address
ntp-service
[ authentication-keyid keyid version
number ]*
undo ntp-service broadcast-server
49-4
Chapter 49 NTP Configuration
keyid
Command
broadcast-server
|