User Manual
Table Of Contents
- 24-Port and 48-Port Gigabit Ethernet PoE+ Smart Switches with 4 SFP Ports
- Contents
- 1 Get Started
- Available publications
- Switch management options and default management mode
- Manage the switch by using the device UI
- About on-network and off-network access
- Access the switch on-network and connected to the Internet
- Use se a Windows-based computer to access the switch on-network and connected to the Internet
- Use the NETGEAR Insight mobile app to discover the IP address of the switch
- Use the NETGEAR Switch Discovery Tool to discover the switch when it is connected to the Internet
- Discover the switch in a network with a DHCP server using the Smart Control Center
- Use other options to discover the switch IP address
- Access the switch on-network when you know the switch IP address
- Access the switch off-network and not connected to the Internet
- Credentials for the device UI
- Register the switch
- Change the language of the device UI
- Change the management mode of the switch
- Use the Device View of the device UI
- Configure interface settings
- Access the NETGEAR support website
- Access the user manual online
- 2 Configure System Information
- View or define system information
- Configure the IP network settings for management access
- Configure the time settings
- Configure denial of service settings
- Configure DNS settings
- Configure green Ethernet settings
- Use the Device View
- Configure Power over Ethernet
- Configure SNMP
- Configure Link Layer Discovery Protocol
- Configure a DHCP L2 relay
- Configure DHCP snooping
- Configure Dynamic ARP Inspection
- Set up PoE timer schedules
- 3 Configure Switching
- Configure the port settings and maximum frame size
- Configure link aggregation groups
- Configure VLANs
- Configure a voice VLAN
- Configure Auto-VoIP
- Configure Spanning Tree Protocol
- Configure multicast
- Manage IGMP snooping
- Configure IGMP snooping
- Configure IGMP snooping for interfaces
- View, search, or clear the IGMP snooping table
- Configure IGMP snooping for VLANs
- Modify IGMP snooping settings for a VLAN
- Disable IGMP snooping on a VLAN and remove it from the table
- Configure one or more IGMP multicast router interfaces
- Configure an IGMP multicast router VLAN
- IGMP snooping querier overview
- Configure an IGMP snooping querier
- Configure an IGMP snooping querier for VLANs
- Display the status of the IGMP snooping querier for VLANs
- Manage MLD snooping
- Enable MLD snooping
- Configure MLD snooping for interfaces
- Configure the MLD VLAN settings
- Modify the MLD snooping settings for a VLAN
- Remove MLD snooping from a VLAN
- Configure one or more MLD multicast router interfaces
- Configure an MLD multicast router VLAN
- Configure an MLD snooping querier
- Configure the MLD snooping querier VLAN settings
- Configure multicast VLAN registration
- View, search, and manage the MAC address table
- Configure Layer 2 loop protection
- 4 Configure Routing
- 5 Configure Quality of Service
- 6 Manage Device Security
- Change the device admin password for the device UI
- Manage the RADIUS settings
- Configure the TACACS+ settings
- Configure authentication lists
- Manage the Smart Control Center
- Configure management access
- Control access with profiles and rules
- Configure port authentication
- Set up traffic control
- Configure access control lists
- Use the ACL Wizard to create a simple ACL
- Configure a MAC ACL
- Configure MAC ACL rules
- Configure MAC bindings
- View or delete MAC ACL bindings in the MAC binding table
- Configure a basic or extended IPv4 ACL
- Configure rules for a basic IPv4 ACL
- Configure rules for an extended IPv4 ACL
- Configure an IPv6 ACL
- Configure rules for an IPv6 ACL
- Configure IP ACL interface bindings
- View or delete IP ACL bindings in the IP ACL binding table
- Configure VLAN ACL bindings
- 7 Monitor the Switch and the Traffic
- 8 Maintain or Troubleshoot the switch
- A Configuration Examples
- B Specifications and Default Settings
24-Port and 48-Port Gigabit Ethernet PoE+ Smart Switches with 4 SFP Ports
Configure System Information User Manual71
6. Select System > Management > Time > Time Configuration.
When you select the SNTP option as the clock source, the SNTP Global Status is
displayed below the SNTP Global Configuration section.
7. Click the Refresh button to refresh the page with the latest information about the switch.
The following table displays the nonconfigurable SNTP Global Status information.
Table 13. SNTP Global Status information
Field Description
Version The SNTP version that the client supports.
Supported mode The SNTP modes that the client supports. Multiple modes can be supported by
a client.
Last Update Time The local date and time (UTC) that the SNTP client last updated the system
clock.
Last Attempt Time The local date and time (UTC) of the last SNTP request or receipt of an
unsolicited message.
Last Attempt Status The status of the last SNTP request or unsolicited message for both unicast
and broadcast modes. If no message was received from a server
, a status of
Other is displayed. These values are appropriate for all operational modes.
• Other.
The status of the last request is unknown.
• Success. The SNTP operation was successful and the system time was
updated.
• Request Timed Out. After an SNTP request was sent to an SNTP server,
the response timer expired before a response from the server was
received.
• Bad Date Encoded. The time provided by the SNTP server is not valid.
• Version Not Supported. The SNTP version supported by the server is
not compatible with the version supported by the client.
• Server Unsynchronized. The SNTP server is not synchronized with its
peers. This is indicated by the leap indicator field in the SNTP message.
• Server Kiss Of Death. The SNTP server indicated that no further queries
were to be sent to this server. This is indicated by a stratum field equal to
0 in a message received from a server.
Server IP Address The IP address of the server for the last received valid packet. If no message
was received from any server
, an empty string is shown.
Address Type The address type of the SNTP server address for the last received valid
packet.
Server Stratum The claimed stratum of the server for the last received valid packet.
Reference Clock ID The reference clock identifier of the server for the last received valid packet.
Server mode The mode of the server for the last received valid packet.
Unicast Server Max Entries The maximum number of unicast server entries that can be configured on this
client.