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System Time
System Time Options
Cisco Small Business 200 1.1 Series Smart Switch Administration Guide 35
5
System Time Options
System time can be set manually by the user, dynamically by using an SNTP
server, or synchronized from the pc running the GUI. If an SNTP server is chosen,
the manual time settings are overwritten when communications with the server
are established.
As part of the boot process, the switch always configures the time, time zone, and
DST in some way. These parameters are obtained from DHCP, from the pc running
the GUI, from SNTP, from values set manually, or if all else fails from the factory
defaults.
Time
Time
The following methods are available for obtaining or setting the time on the switch:
• SNTP—Time can be received from time servers. SNTP that ensures
accurate network time synchronization of the switch up to the millisecond by
using an SNTP server for the clock source.
NOTE This method is recommended for the sake of accuracy.
• Manual—The user can manually set the time.
• From Browser—Time can be received from the time of the PC using
browser information. If this feature is enabled, the switch uses the system
time from the configuring computer, unless the time has been configured on
the switch manually by the user or SNTP server support is not available or
enabled.
After the time has been set by any of the three time sources, it is not set
again by the browser.
The configuration of time from browser is saved to the Running
Configuration file. You must copy the Running Configuration to the Startup
Configuration in order to enable the device to use the time from browser
after reboot. The time after reboot is set during the first WEB login to the
device.
When the user applies this feature for the first time, if the time was not
already set, the device sets the time from the browser.
The time from browser works with both HTTP and HTTPS connections.
- ADMINISTRATION 1
- Contents 2
- Chapter 1: Getting Started 1 2
- Chapter 5: System Time 55 3
- Getting Started 8
- Logging In 9
- Password Expiration 10
- Logging Out 10
- Window Navigation 13
- Management Buttons 14
- Viewing Statistics 17
- Viewing Etherlike Statistics 18
- Viewing 802.1X EAP Statistics 20
- Managing RMON 21
- Managing System Logs 24
- Setting System Log Settings 25
- Remote Log Servers 26
- Remote Log 26
- Servers 26
- Add Remote Log Server 26
- Viewing Memory Logs 27
- Flash Memory 28
- Managing System Files 29
- Language Files 34
- Copying Configuration Files 38
- Save Configuration 39
- DHCP Auto Configuration 40
- Auto Configuration 41
- System Time 42
- System Time Options 43
- Configuring System Time 44
- SNTP Settings 45
- Authentication 45
- Adding an SNTP Server 47
- In Process 48
- Add SNTP Server 48
- Defining SNTP Authentication 49
- Add SNTP Authentication 50
- Operations 51
- TCP/UDP Services 52
- System Information 53
- Switch Models 54
- Rebooting the Switch 56
- Idle Session Timeout 57
- Pinging a Host 58
- Configuring Discovery 60
- LLDP and CDP 61
- Configuring LLDP 63
- Setting LLDP Properties 64
- Editing LLDP Port Settings 65
- LLDP Properties 66
- LLDP MED 67
- LLDP MED Network Policy 68
- Add LLDP MED Network Policy 69
- Network Policy 70
- Displaying LLDP Port Status 71
- Local Information 73
- Endpoint Class 1 75
- Endpoint Class 2 75
- Endpoint Class 3 75
- Neighbors Information 77
- Accessing LLDP Statistics 81
- LLDP Overloading 81
- Configuring CDP 84
- Bridging 85
- Filtering 85
- Flooding 85
- Administration > 87
- CDP Local Information 88
- CDP Neighbors Details 90
- Viewing CDP Statistics 91
- Port Management 92
- is disabled 94
- Link Aggregation Overview 96
- LAG Management 97
- Defining LAG Management 98
- Configuring LAG Settings 99
- Configuring Link Aggregation 100
- Configuring LACP 101
- Edit LACP 102
- Configuring Green Ethernet 103
- 802.3az EEE Overview 104
- 802.3az EEE 105
- Smartports 110
- What is a Smartport 111
- Smartport Types 111
- Special Smartport Types 113
- Smartport Macros 114
- Smartport 116
- Interface Settings 116
- Auto Smartport 117
- Identifying Smartport Type 118
- Error Handling 121
- Default Configuration 121
- Compatibility 121
- Common Smartport Tasks 122
- Port Type 123
- Properties 124
- Smartport Type Settings 125
- STEP 4 Smartport Diagnostic 127
- Built-in Smartport Macros 129
- Managing Device Diagnostics 152
- MSA-compatible SFPs 154
- Port and 156
- VLAN Mirroring 156
- Add Port/VLAN Mirroring 156
- CPU Utilization 158
- PoE on the Switch 159
- PoE Operation 160
- Configuring PoE Properties 161
- PoE Properties 162
- Port Limit 162
- Class Limit 162
- PoE Settings 163
- VLAN Management 166
- Creating VLANs 170
- Defining VLAN Membership 173
- Configuring VLAN Membership 174
- Join VLAN To Port 175
- Interface 175
- Settings 175
- Voice VLAN 177
- Dynamic Voice VLAN Modes 178
- Voice End-Points 179
- Defaults 179
- Voice VLAN Triggers 180
- Auto Voice VLAN 180
- Voice VLAN QoS 182
- Voice VLAN Constraints 182
- Configuring Voice VLAN 183
- Auto Voice 186
- Configuring Telephony OUI 187
- Add Telephony OUI 188
- Telephony OUI Interface 189
- Edit Interface Settings 189
- STP Flavors 190
- STEP 2 Enter the parameters 191
- STEP 3 Enter the parameters 193
- MSTP Workflow 197
- Managing MAC Address Tables 198
- Dynamic MAC Addresses 199
- Querying Dynamic Addresses 200
- Multicast Forwarding 202
- Typical Multicast Setup 203
- Multicast Operation 204
- Multicast Registration 204
- Multicast Address Properties 205
- Defining Multicast Properties 206
- Adding MAC Group Address 207
- Configuring IGMP Snooping 211
- IGMP Snooping 212
- Edit IGMP Snooping 212
- MLD Snooping 213
- Edit MLD Snooping 215
- IGMP/MLD IP Multicast Group 216
- MAC Group Address 216
- MAC Multicast 216
- Multicast Router Port 217
- Forward All 218
- Unregistered Multicast 219
- Configuring IP Information 221
- Management and IP Interfaces 222
- Defining an IPv4 Interface 223
- Managing IPv6 224
- Defining an IPv6 Interface 225
- Defining IPv6 Addresses 226
- Add IPv6 Address 227
- Reachable 228
- Configuring IPv6 Tunnels 229
- Viewing IPv6 Route Tables 232
- IPv6 Routes 233
- Configuring ARP 234
- Domain Name Systems 235
- Defining DNS Servers 236
- Mapping DNS Hosts 237
- Configuring Security 239
- Defining Users 240
- Configuring RADIUS Parameters 243
- Defining Access Profiles 246
- Access Profiles 247
- Network Mask 248
- Prefix Length 248
- Defining Profile Rules 249
- Configuring TCP/UDP Services 251
- Defining Storm Control 252
- Configuring Port Security 253
- Configuring 802.1X 255
- 802.1X Parameters Workflow 256
- Defining 802.1X Properties 257
- Force Authorized 258
- Denial of Service Prevention 262
- QoS Features and Components 265
- Configuring QoS - General 266
- Interface QoS Settings 268
- Configuring QoS Queues 268
- CoS/802.1p to Queue 270
- Mapping DSCP to Queue 271
- Configuring Bandwidth 272
- Managing QoS Statistics 274
- Viewing Queues Statistics 275
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