Qtech QSW-2900-24T-AC [173/209] Sntp client poll interval configuration

12-171
QTECH(config)#sntp client multicast ttl 5
12.2.6 SNTP client poll interval configuration
Use following command to configure poll-interval of SNTP client in unicast or anycas.:
sntp client poll-interval seconds
no sntp client poll-interval
Only in unicast and anycast mode, configured poll interval can be effective. SNTP client sends requirement in
a poll interval to the server to adjust current time.
For example:
! Configure poll-interval to be 100 seconds
QTECH(config)#sntp client poll-interval 100
12.2.7 SNTP client retransmit configuration
Uses following command to configure retransmit times inunicast and anycast operation mode.:
sntp client retransmit times
no sntp client retransmit
sntp client retransmit-interval seconds
no sntp client retransmit-interval
This command is effective in unicast and anycast operation mode. SNTP requirement packet is UDP packet,
overtime retransmission system is adopted because the requirement packet cannot be guaranteed to send to the
destination. Use above commands to configure retransmit times and the interval.
For example:
! Configure overtime retransmission to be twice and the interval to be 5
QTECH(config)#sntp client retransmit-interval 5
QTECH(config)#sntp client retransmit 2
12.2.8 SNTP client valid server configuration
In broadcast and multicast mode, SNTP client receives protocol packets from all servers without distinction.
When there is malice attacking server (it will not provide correct time), local time cannot be the standard time. To
solve this problem, a series of valid servers can be listed to filtrate source address of the packet.
Corresponded command is as following:
sntp client valid-server ipaddress
no sntp client valid-server
For example:
! Configure servers in network interface 10.1.0.0/16 to be valid servers
QTECH(config)#sntp client valid-server 10.1.0.0 0.0.255.255

Содержание

Скачать
Случайные обсуждения