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Configure an SNTP server

You can enable automatic syncing of system time after you configure at least one SNTP
server providing you also:

•

Configure the SNTP client mode to use either a public SNTP server, or a clock and
SNTP server within your own network. For more information, see Configure the SNTP
client mode on page 87.

•

Activate automated time management. For more information, see Enable system
time to synchronize with an SNTP server on page 90.

To configure an SNTP server:

1. Open a web browser from a computer that is connected to the same network as the

switch, or connected directly to the switch through an Ethernet cable.

2. Enter the IP address that is assigned to the switch.

A login window opens.

3. Enter the device management password.

The password is the one that you specified the first time that you logged in. The
password is case-sensitive.

The HOME page displays.

4. Select Settings > SNTP

The SNTP options display.

5. In the SYSTEM TIME section, click the down arrow to expand the menu.

The system time options display.

6. Click the SNTP Server Configuration tab.

7. Click the purple Add button.

The SNTP server configuration menu options display.

8. From the Server Type menu, select either IPv4 or DNS.

9. In the Address field, enter the address in the format compatible with Server Type.

10. In the Port field, enter the number of the port to use for UDP transmissions: 123, or

1025 to 36465.
For unicast transmissions between the SNTP client and an external SNTP server, this
port must be open in the firewall to allow access.
When the SNTP client mode is broadcast, only allow the internal SNTP server to
access the port.

User Manual

89

Maintain and Monitor the Switch

Gigabit Ethernet Plus Switches

Содержание GS316EP

Страница 1: ...User Manual Gigabit Ethernet Plus Switches Models GS316EP GS316EPP NETGEAR Inc 350 E Plumeria Drive June 2021 San Jose CA 95134 USA 202 12181 01...

Страница 2: ...etgear com about regulatory See the regulatory compliance document before connecting the power supply For NETGEAR s Privacy Policy visit https www netgear com about privacy policy By using this device...

Страница 3: ...he switch 18 Set a fixed IP address for the switch through a network connection 18 Assign a fixed IP address by connecting directly to the switch off network 19 Change the language of the device UI 21...

Страница 4: ...fy a port PVID for an advanced 802 1Q VLAN 53 Set an existing advanced 802 1Q VLAN as the voice VLAN and adjust the CoS value 54 Change the OUI table for the voice VLAN 55 Delete an advanced 802 1Q VL...

Страница 5: ...mode 83 Manage the power saving mode 83 Control the port LEDs 84 Change the switch device name 85 View system information 86 Date and time settings 86 Configure the system time manually 86 Configure...

Страница 6: ...default settings 106 Technical specifications 107 Model GS316EP technical specifications 107 Model GS316EPP technical specifications 107 Appendix B Additional Switch Discovery and Access Information...

Страница 7: ...warnings Note This user manual complements the installation guide that came with your switch You can also download the installation guide by visiting netgear com support download For more information...

Страница 8: ...Table 1 Supported switch models Name Model 16 Port Gigabit Ethernet Plus Switch with PoE GS316EP 16 Port Gigabit Ethernet Plus Switch with High Power PoE GS316EPP LEDs This section describes the LED...

Страница 9: ...Mbps port link is established Blinking yellow 100 Mbps or 10 Mbps activity on this port Off No link is detected on this port Left port LED Solid green The port is delivering PoE power Off The port is...

Страница 10: ...FP transceiver 1000BASE T AGM734 1G Ethernet copper Switch label The switch label on the bottom panel of the switch shows the serial number MAC address and default login information of the switch Safe...

Страница 11: ...AR product which might not be covered by NETGEAR s warranty to the extent permissible by applicable law Observe and follow service markings Do not service any product except as explained in your produ...

Страница 12: ...uch as South Korea and Taiwan 100V 50 Hz in eastern Japan and 100V 60 Hz in western Japan 230V 50 Hz in most of Europe the Middle East and the Far East Be sure that attached devices are electrically r...

Страница 13: ...the ampere ratings limit for the extension cable or power strip To help protect your system from sudden transient increases and decreases in electrical power use a surge suppressor line conditioner o...

Страница 14: ...and use the IP address to access the switch s device UI so you can set up manage and monitor the switch The chapter contains the following sections Set up the switch in your network and power on the...

Страница 15: ...nect your PoE devices to the lowest lowest number ports starting with port 1 and then connect any non PoE devices For more information see PoE considerations for switches that support PoE or PoE on pa...

Страница 16: ...dress and access the device UI The NETGEAR Switch Discovery Tool NSDT discovers the switch in your network so you can access the device UI of the switch from a web browser To install the NSDT discover...

Страница 17: ...Enter the switch password The default password is password The password is case sensitive The HOME page displays The right pane or depending on the size of your browser window the middle pane shows th...

Страница 18: ...IP address of the switch by using an Ethernet cable to connect a directly to the switch see Assign a fixed IP address by connecting directly to the switch off network on page 19 Set a fixed IP addres...

Страница 19: ...If you cannot connect to the switch over a network connection you can set the IP address of the switch by using an Ethernet cable to connect directly to the switch To disable the switch s DHCP client...

Страница 20: ...n the complete fixed IP address You can bookmark it later 10 Click the APPLY button Your settings are saved Your switch web session disconnects when you change the IP address 11 Disconnect the switch...

Страница 21: ...nu select a language 6 Click the APPLY button A pop up warning window opens 7 Click the CONTINUE button Your settings are saved and the language changes Change the switch password The default password...

Страница 22: ...tch or you can also register the switch through the device UI in which case the switch must be connected to the Internet To register the switch through the device UI 1 Open a web browser from a comput...

Страница 23: ...witch Performance This chapter describes how you can optimize the performance of the switch and contains the following sections Set the quality of service mode and port rate limits Manage individual p...

Страница 24: ...ich you can set for individual ports in either QoS mode simply means that the switch slows down all traffic on a port so that traffic does not exceed the limit that you set for that port If you set th...

Страница 25: ...selection from the QoS Mode menu is 802 1P DSCP do the following to change the selection to Port Based a From the QoS Mode menu select Port Based A pop up warning window opens b Click the CONTINUE but...

Страница 26: ...trol the port prioritization on the switch because the device that sends the traffic that is the packets to the switch prioritizes the traffic However you can set the rate limits for individual ports...

Страница 27: ...Click the APPLY button Your settings are saved and the Storm Control Rate column displays the limit that you set Manage broadcast filtering and set port storm control rate limits A broadcast storm is...

Страница 28: ...change the QoS mode a From the QoS Mode menu select Port Based or 802 1P DSCP A pop up warning window opens b Click the CONTINUE button The pop up window closes and the QoS mode is changed 6 Click the...

Страница 29: ...he quality of service mode and port rate limits on page 24 To set rate limits for incoming and outgoing traffic on a port 1 Open a web browser from a computer that is connected to the same network as...

Страница 30: ...ies on page 24 1 Open a web browser from a computer that is connected to the same network as the switch or connected directly to the switch through an Ethernet cable 2 Enter the IP address that is ass...

Страница 31: ...indow opens 3 Enter the device management password The password is the one that you specified the first time that you logged in The user name and password are case sensitive The HOME page displays The...

Страница 32: ...ys The PORT STATUS pane displays on the right or the bottom of the HOME page depending on the size of your browser window A port that is in use shows as UP A port that is not in use shows as AVAILABLE...

Страница 33: ...t is assigned to the switch A login window opens 3 Enter the device management password The password is the one that you specified the first time that you logged in The password is case sensitive The...

Страница 34: ...Your settings are saved User Manual 34 Optimize the Switch Performance Gigabit Ethernet Plus Switches...

Страница 35: ...segment traffic on the switchj and contains these sections VLAN overview Activate the Basic Port Based VLAN mode and assign VLANs Manage advanced port based VLANs Manage basic 802 1Q VLANs Manage adva...

Страница 36: ...o the number of ports on the switch Advanced Port Based VLAN In an advanced port based VLAN configuration ports with the same VLAN ID are also placed into the same VLAN but you can assign a single por...

Страница 37: ...tagging Yes Yes trunk port only Yes No Multiple VLANs on a single port Yes No No No Voice VLAN Activate the Basic Port Based VLAN mode and assign VLANs By default all types of VLANs are disabled on t...

Страница 38: ...VLAN select a VLAN ID from the VLAN menu for the individual port Each port can be assigned to a single VLAN only However for the port that you want to use as the uplink port to the Internet connection...

Страница 39: ...ndow opens informing you that the current VLAN settings will be lost 7 Click the CONTINUE button Your settings are saved and the pop up window closes By default VLAN 1 is added and all ports are membe...

Страница 40: ...lect the ports that you want to include in the VLAN through a combination of the following actions Click the icon for an unselected port to add the port to the VLAN Click the icon for a selected port...

Страница 41: ...IT button The Advanced Port Based VLAN pane displays 7 Change the settings for the VLAN VLAN Name Enter a name from 1 to 14 characters You cannot change the VLAN ID If you need to change the VLAN ID d...

Страница 42: ...From the menu at the top of the page select SWITCHING The QOS page displays 5 From the menu on the left select VLAN The VLAN page displays 6 In the Advanced Port Based VLAN section click the VLAN that...

Страница 43: ...ess that is assigned to the switch A login window opens 3 Enter the device management password The password is the one that you specified the first time that you logged in The password is case sensiti...

Страница 44: ...itch A login window opens 3 Enter the device management password The password is the one that you specified the first time that you logged in The password is case sensitive The HOME page displays 4 Fr...

Страница 45: ...enter a number from 1 to 4093 d Click the APPLY button The pop up window closes The VLAN is added as a possible selection in the VLAN menu for each individual port e For each port that you want to mak...

Страница 46: ...hernet cable 2 Enter the IP address that is assigned to the switch A login window opens 3 Enter the device management password The password is the one that you specified the first time that you logged...

Страница 47: ...BASED PORT CONFIGURATION pane displays 6 To change the name for the VLAN do the following a Click the Edit VLAN button The 802 1Q BASED VLAN CONFIGURATIONS BASIC MODE pane displays b Click the VLAN t...

Страница 48: ...The password is case sensitive The HOME page displays 4 From the menu at the top of the page select SWITCHING The QOS page displays 5 From the menu on the left select VLAN The VLAN page displays 6 Cl...

Страница 49: ...ed or untagged ports Port tagging allows a port to be associated with a particular VLAN and allows the VLAN ID tag to be added to data packets that are sent through the port The tag identifies the VLA...

Страница 50: ...port from the VLAN Tag All Make all ports tagged members of the VLAN Untag All Make all ports untagged members of the VLAN Exclude All Exclude ports from the VLAN d Click the APPLY button Your settin...

Страница 51: ...racters b In the VLAN ID field enter a number from 1 to 4094 c Use a combination of the following options to select port tags and set whether ports are members of the VLAN T Make the port a tagged mem...

Страница 52: ...n click anywhere in the row for the VLAN 7 Click the EDIT button 8 Change the VLAN settings as needed In the VLAN Name field enter a name from 1 to 14 characters You cannot change the VLAN ID If you n...

Страница 53: ...a port 1 Open a web browser from a computer that is connected to the same network as the switch or connected directly to the switch through an Ethernet cable 2 Enter the IP address that is assigned t...

Страница 54: ...efault Class of Service CoS value for the voice VLAN is 6 which you can adjust to any value from 0 the lowest priority to 7 the highest priority The voice VLAN CoS value applies to all traffic on the...

Страница 55: ...oIP phones of specific manufacturers All traffic received on voice VLAN ports from VoIP phones with a listed OUI is forwarded on the voice VLAN You can add change and remove OUIs including the default...

Страница 56: ...want to change and click the EDIT button b Change the OUI the description or both c Click the APPLY button Your settings are saved 11 To delete an OUI that you no longer need select the OUI and click...

Страница 57: ...In the table in the right pane click the VLAN that you want to delete you can click anywhere in the row for the VLAN 7 Click the DELETE button Your settings are saved The VLAN is deleted Deactivate a...

Страница 58: ...age displays 5 From the menu on the left select VLAN The VLAN page displays 6 In the NO VLANs section click the ACTIVATE MODE button A pop up window opens informing you that the current VLAN settings...

Страница 59: ...how you can manage the switch in your network The chapter contains the following sections Manage NETGEAR Switch Discovery Protocol Set up static link aggregation Manage multicast Change the IP addres...

Страница 60: ...he left select SWITCH DISCOVERY The SWITCH DISCOVERY page displays 6 Enable or disable NSDP by clicking the button in the NSDP section When NSDP is enabled the button bar displays green 7 Click the AP...

Страница 61: ...the ports on the switch that will participate in the LAG as described in this task To set up a LAG on the switch 1 Open a web browser from a computer that is connected to the same network as the switc...

Страница 62: ...ut changing these settings on the switch see Manage individual port settings on page 29 To make link aggregation connections between the switch and another network device Using Ethernet cables connect...

Страница 63: ...you want to enable The button bar for a LAG that is enabled displays green 7 Click the APPLY button Your settings are saved Manage multicast Multicast IP traffic is traffic that is destined to a host...

Страница 64: ...ST The MULTICAST page displays 6 Enable or disable IGMP snooping by clicking the button in the IGMP Snooping section When IGMP snooping is enabled the button bar displays green 7 Click the APPLY butto...

Страница 65: ...raffic from unknown addresses is allowed To manage blocking of unknown multicast addresses 1 Open a web browser from a computer that is connected to the same network as the switch or connected directl...

Страница 66: ...er from a computer that is connected to the same network as the switch or connected directly to the switch through an Ethernet cable 2 Enter the IP address that is assigned to the switch A login windo...

Страница 67: ...s that is assigned to the switch A login window opens 3 Enter the device management password The password is the one that you specified the first time that you logged in The password is case sensitive...

Страница 68: ...password is case sensitive The HOME page displays 4 Select IP Address DHCP On The IP address fields display but you cannot change them yet The button bar in the DHCP section displays green because the...

Страница 69: ...logged in The password is case sensitive The HOME page displays 4 Select IP Address Fixed IP The button bar in the DHCP section displays gray because the DHCP client of the switch is disabled 5 Click...

Страница 70: ...eturn the switch to its factory default settings Control access to the device UI HTTP and HTTPS management access Change or lift access restrictions to the switch Manage the DoS prevention mode Manage...

Страница 71: ...of the page select SETTINGS The CONFIGURATION FILE page displays 5 From the menu on the left select FIRMWARE The FIRMWARE page displays The page also shows the UPDATE FIRMWARE section The FIRMWARE VER...

Страница 72: ...uration settings to your computer so that you can restore the configuration settings from this backup file later if needed To back up the configuration settings switch of the switch 1 Open a web brows...

Страница 73: ...the menu at the top of the page select SETTINGS 5 From the menu on the left select CONFIGURATION FILE The RESTORE CONFIGURATION page displays 6 Click the purple file icon navigate to the saved configu...

Страница 74: ...ss erases all settings that you configured on the switch To reset the switch to factory default settings 1 On the front of the switch locate the recessed RESET button 2 Using a straightened paper clip...

Страница 75: ...e displays 6 Click the RESTORE DEFAULT SETTINGS button A warning pop up window opens 7 Click the CONTINUE button The switch is reset to factory default settings and reboots WARNING Do not interrupt th...

Страница 76: ...dresses repeat the previous three steps HTTP and HTTPS management access You can configure HTTP and HTTPS to allow management access to the switch s device UI on a web browser You can enable one or bo...

Страница 77: ...ote access via HTTP When this setting is enabled the button displays on the right side of the slide and the slide turns green 6 In the HTTP Session Timeout Minutes field type the number of minutes tha...

Страница 78: ...dge Microsoft Edge displays this message or a similar warning There is a problem with this website s security certificate Select Details Go on to the webpage Microsoft Internet Explorer Microsoft Inte...

Страница 79: ...ht side of the slide and the slide turns green 6 In the HTTPS Port field type in the number of the port The default is port 443 or you can set a number in the range from 1025 to 65535 7 In the HTTPS S...

Страница 80: ...plays Yes You can now enable HTTPS Transfer an SSL certificate from a TFTP server for HTTPS access You can transfer an SSL certificate from a TFTP server to the switch for HTTPS access After you insta...

Страница 81: ...n 8 Select the Start File Transfer check box 9 Click the APPLY button The Certificate Generation Status field displays Certificate generation in progress When the certificate is generated the Certific...

Страница 82: ...must enter a password to access the device UI To change or lift access restrictions to the switch 1 Open a web browser from a computer that is connected to the same network as the switch or connected...

Страница 83: ...d is password The password is case sensitive The HOME page displays 4 From the menu at the top of the page select SETTINGS 5 From the menu on the left select DOS PREVENTION The DOS PREVENTION page dis...

Страница 84: ...the IP address that is assigned to the switch A login window opens 3 Enter the device management password The password is the one that you specified the first time that you logged in The password is...

Страница 85: ...ar displays gray 6 Click the APPLY button Your settings are saved Change the switch device name By default the device name of the switch is the same as the model number This device name shows in for e...

Страница 86: ...you logged in The password is case sensitive The HOME page displays 4 Select System Info The system information fields display Date and time settings You can set the system time manually or set up SNT...

Страница 87: ...SNTP client mode as unicast or broadcast Note Automated time syncing depends on the switch knowing how to contact your SNTP servers and then activating automated time syncing For more information see...

Страница 88: ...e to add the IP address or DNS name of one or more SNTP servers for the switch to poll For more information see Configure an SNTP server on page 89 7 In the Port field specify the local UDP port on wh...

Страница 89: ...password is the one that you specified the first time that you logged in The password is case sensitive The HOME page displays 4 Select Settings SNTP The SNTP options display 5 In the SYSTEM TIME sec...

Страница 90: ...SNTP server time 1 Open a web browser from a computer that is connected to the same network as the switch or connected directly to the switch through an Ethernet cable 2 Enter the IP address that is a...

Страница 91: ...port status and drill down for details about the port To view the status of a port 1 Open a web browser from a computer that is connected to the same network as the switch or connected directly to the...

Страница 92: ...the highest numbered port up to its total power budget If the power requirements for the attached powered devices PDs exceed the total power budget of the switch the PD on the highest numbered port is...

Страница 93: ...ower PoE and PoE 3 13 0W 25 5W 30 0W High power PoE 4 Monitor PD health You can use PD health monitoring to test the health of a powered device PD that is connected to a PoE port You can enable automa...

Страница 94: ...ct 10 or 20 from the menu The option is disabled by default with the count set to 5 11 When your settings are complete click the APPLY button The ping test on the PD begins Total Count The number of p...

Страница 95: ...e the Power Cycle Ports feature to forcibly reset one or more PoE ports To power cycle PoE ports through the device UI 1 Open a web browser from a computer that is connected to the same network as the...

Страница 96: ...ort settings display 6 Click the EDIT button The PoE port options display 7 Choose any of the following options to manage the PoE settings on the port a Port Power Enable The port s ability to deliver...

Страница 97: ...ports if the total power that the switch is capable of delivering exceeds the total power budget Low Low priority This is the default setting High High priority Critical Critical priority e Power Lim...

Страница 98: ...to view Port status information displays Output Voltage V The voltage that is delivered to the PD in volts Output Current mA The current that is delivered to the PD in milliamps Temperature The temper...

Страница 99: ...PoE port on page 96 To set up and enable a PoE schedule for one or multiple ports 1 Open a web browser from a computer that is connected to the same network as the switch or connected directly to the...

Страница 100: ...password is the one that you specified the first time that you logged in The password is case sensitive The HOME page displays 4 Select POE The Power over Ethernet PoE page displays 5 Select POE SCHE...

Страница 101: ...end points of the range together so that they overlap The start and end times for the range slider display identical time values For example if the RANGE1 sliders are pulled all the way to the left th...

Страница 102: ...7 Diagnostics and Troubleshooting This chapter covers the following topics Test cable connections Resolve a subnet conflict to access the switch PoE troubleshooting suggestions 102...

Страница 103: ...ectly to the switch through an Ethernet cable 3 Enter the IP address that is assigned to the switch A login window opens 4 Enter the device management password The password is the one that you specifi...

Страница 104: ...ure that the Ethernet cables are plugged in correctly For each powered device PD that is connected to the switch the associated PoE port LED on the switch lights solid green If the associated PoE port...

Страница 105: ...A Factory Default Settings and Technical Specifications This appendix contains the following sections Factory default settings Technical specifications 105...

Страница 106: ...is not connected to a network with a DHCP server IP address 255 255 255 0 Subnet mask Enabled DHCP mode Enabled IGMP snooping None configured LAGs Disabled If enabled by default all ports are members...

Страница 107: ...01 x 27 mm Dimensions W x D x H GS316EP 0 86 lb 0 39 kg Weight 32 to 104 F 0 to 40 C Operating temperature 10 90 maximum relative humidity noncondensing Operating humidity KC Class B FCC part 15 Class...

Страница 108: ...27 mm Dimensions W x D x H GS316EPP 2 0 lb 0 88 kg Weight 32 to 104 F 0 to 40 C Operating temperature 10 90 maximum relative humidity noncondensing Operating humidity KC Class B FCC part 15 Class B RC...

Страница 109: ...overy and Access Information This appendix provides additional information about how you can discover and access the switch in your network The appendix contains the following section Access the switc...

Страница 110: ...sword The password is case sensitive The HOME page displays The right pane or depending on the size of your browser window the middle pane shows the IP address that is assigned to the switch Tip You c...

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