US Region
Grandmetric LLC
Brookfield Place Office
200 Vesey Street
New York, NY 10281
EIN: 98-1615498
+1 302 691 94 10
info@grandmetric.com
EMEA Region
GRANDMETRIC Sp. z o.o.
ul. Metalowa 5, 60-118 Poznań, Poland
NIP 7792433527
+48 61 271 04 43
info@grandmetric.com
Technology: Network Services
Area: Network Time Protocol (NTP)
Vendor: Cisco
Software: IOS 12.X , 15.X
Platform: Catalyst Switches, Routers
The Network Time Protocol (NTP) is able to synchronize the time of day between time servers and clients which are distributed so that the events can correlate when receiving system logs and other time-specific events from multiple network devices. NTP uses the User Datagram Protocol (UDP) as its transport protocol.
To configure an NTP server of IP 192.0.2.10 as a time reference:
switch# configure terminal
switch(config)# ntp server 192.0.2.10
If NTP server supports authentication, use key command:
switch(config)# ntp server 192.0.2.10 key Cisco
To configure ntp in ipv6 environment:
switch(config)# ntp peer 2001:0db8::4101
To verify ntp settings:
switch(config)# show ntp peers
--------------------------------------------------
Peer IP Address Serv/Peer
--------------------------------------------------
2001:0db8::4101 Peer (configured)
192.0.2.10 Server (configured)
Use also:
switch(config)# show ntp association
switch(config)# show ntp status
