
C
HAPTER
24
| System Management Commands
NTP Commands
– 950 –
ntp server
This command sets the IP addresses of the servers to which NTP time
requests are issued. Use the
no
form of the command to clear a specific
time server or all servers from the current list.
S
YNTAX
ntp server
ip-address
[
key
key-number
]
no ntp server
[
ip-address
]
ip-address
- IP address of an NTP time server.
key-number
- The number of an authentication key to use in
communications with the server. (Range: 1-65535)
D
EFAULT
S
ETTING
Version number: 3
C
OMMAND
M
ODE
Global Configuration
C
OMMAND
U
SAGE
◆
This command specifies time servers that the switch will poll for time
updates when set to NTP client mode. It issues time synchronization
requests based on the interval set with the
ntp poll
command. The
client will poll all the time servers configured, the responses received
are filtered and compared to determine the most reliable and accurate
time update for the switch.
◆
You can configure up to 50 NTP servers on the switch. Re-enter this
command for each server you want to configure.
◆
NTP authentication is optional. If enabled with the
ntp authenticate
command, you must also configure at least one key number using the
ntp authentication-key
command.
◆
Use the
no
form of this command without an argument to clear all
configured servers in the list.
E
XAMPLE
Console(config)#ntp server 192.168.3.20
Console(config)#ntp server 192.168.3.21
Console(config)#ntp server 192.168.5.23 key 19
Console(config)#
R
ELATED
C
OMMANDS
Summary of Contents for ECS4660-28F
Page 1: ...Management Guide www edge core com ECS4660 28F Layer 3 Gigabit Ethernet Switch...
Page 2: ......
Page 4: ......
Page 12: ...ABOUT THIS GUIDE 12...
Page 64: ...CONTENTS 64...
Page 90: ...TABLES 90...
Page 92: ...SECTION I Getting Started 92...
Page 122: ...SECTION II Web Configuration 122 Multicast Routing on page 825...
Page 148: ...CHAPTER 3 Using the Web Interface Navigating the Web Browser Interface 148...
Page 224: ...CHAPTER 5 Interface Configuration VLAN Trunking 224 Figure 68 Configuring VLAN Trunking...
Page 262: ...CHAPTER 6 VLAN Configuration Configuring VLAN Translation 262...
Page 304: ...CHAPTER 9 Congestion Control Automatic Traffic Control 304...
Page 340: ...CHAPTER 11 Quality of Service Attaching a Policy Map to a Port 340...
Page 452: ...CHAPTER 13 Security Measures DHCP Snooping 452...
Page 740: ...CHAPTER 17 IP Services Configuring the PPPoE Intermediate Agent 740...
Page 866: ...CHAPTER 21 Multicast Routing Configuring PIMv6 for IPv6 866...
Page 882: ...CHAPTER 22 Using the Command Line Interface CLI Command Groups 882...
Page 1024: ...CHAPTER 26 Remote Monitoring Commands 1024...
Page 1030: ...CHAPTER 27 Flow Sampling Commands 1030...
Page 1088: ...CHAPTER 28 Authentication Commands PPPoE Intermediate Agent 1088...
Page 1162: ...CHAPTER 29 General Security Measures Configuring Port based Traffic Segmentation 1162...
Page 1186: ...CHAPTER 30 Access Control Lists ACL Information 1186...
Page 1214: ...CHAPTER 31 Interface Commands Transceiver Threshold Configuration 1214...
Page 1238: ...CHAPTER 33 Port Mirroring Commands RSPAN Mirroring Commands 1238...
Page 1258: ...CHAPTER 34 Congestion Control Commands Automatic Traffic Control Commands 1258...
Page 1270: ...CHAPTER 36 UniDirectional Link Detection Commands 1270...
Page 1276: ...CHAPTER 37 Address Table Commands 1276...
Page 1336: ...CHAPTER 39 ERPS Commands 1336...
Page 1386: ...CHAPTER 40 VLAN Commands Configuring Voice VLANs 1386...
Page 1406: ...CHAPTER 41 Class of Service Commands Priority Commands Layer 3 and 4 1406...
Page 1424: ...CHAPTER 42 Quality of Service Commands 1424...
Page 1536: ...CHAPTER 43 Multicast Filtering Commands MLD Proxy Routing 1536...
Page 1602: ...CHAPTER 45 CFM Commands Delay Measure Operations 1602...
Page 1624: ...CHAPTER 47 Domain Name Service Commands 1624...
Page 1646: ...CHAPTER 48 DHCP Commands DHCP Server 1646...
Page 1974: ...SECTION IV Appendices 1974...
Page 1980: ...APPENDIX A Software Specifications Management Information Bases 1980...