Filter
Top Products
340 CHAPTER 11: SYSTEM MANAGEMENT
Perform the following configurations in VLAN interface view.
This configuration task must be performed on the interface to be disabled from
receiving an NTP message.
Setting the Authority to Access a Local Switch
Set the authority to access the NTP services on a local switch. This is a basic and
brief security measure. An access request will be matched with peer, serve, serve
only, and query only in an ascending order of the limitation. The first matched
authority will be granted.
Perform the following configurations in system view.
IP address ACL number is specified through the acl-number parameter and ranges
from 2000 to 2999. The meanings of other authority levels are as follows:
■ query: Allow control query for the local NTP service only.
■ synchronization: Allow request for local NTP time service only.
■ serve: Allow local NTP time service request and control query. However, the
local clock will not be synchronized by a remote server.
■ peer: Allow local NTP time service request and control query. And the local
clock will also be synchronized by a remote server.
Setting Maximum Local Sessions
This configuration task sets the maximum local sessions.
Perform the following configurations in system view.
number specifies the maximum number of local sessions, ranges from 0 to 100,
and defaults to 100.
Table 75 Enabling or Disabling an Interface to Receive an NTP Message
Operation Command
Enable an interface to receive an NTP message undo ntp-service in-interface disable
Disable an interface from receiving an NTP
message
ntp-service in-interface disable
Table 76 Setting the Authority to Access a Local Switch
Operation Command
Set authority to access a local Ethernet switch ntp-service access { query |
synchronization | serve | peer } acl-number
Cancel settings of the authority to access a
local Ethernet switch
undo ntp-service access { query |
synchronization | serve | peer }
Table 77 Setting the Maximum Local Sessions
Operation Command
Set the maximum local sessions ntp-service max-dynamic-sessions number
Resume the maximum number of local
sessions
undo ntp-service max-dynamic-sessions