Switch

Switch > Monitor > Switch
Label	Description
	Select to view the device information and connection status in the past two hours, day, week or month.
Tag	Select one or multiple switches and click this button to create a new tag for the switch(es) or delete an existing tag.
Move	Select one or multiple switches and click this button to move the switch(es) to another site or remove the switch(es) from the current site.
Search	Specify your desired filter criteria to filter the list of switches.
Switch	This shows the number of switches connected to the site network.
Export	Click this button to save the switch list as a CSV or XML file to your computer.
Status	This shows whether the switch is online (green), has generated alerts (yellow), goes off-line (red) or has been off-line for at least six days (gray).
Name	This shows the descriptive name of the switch.
Tag	This shows the user-specified tag for the switch.
MAC address	This shows the MAC address of the switch.
LAN IP	This shows the local (LAN) IP address of the switch.
Public IP	This shows the global (WAN) IP address of the switch.
Model	This shows the model number of the switch.
# Port	This shows the number of the switch port which is connected to the NCC.
Configuration status	This shows whether the configuration on the switch is up-to-date.
Bandwidth Utilization	This shows what percentage of the upstream/downstream bandwidth is currently being used by the switch’s uplink port.
Production information	This shows the production information of the switch.
Connectivity	This shows the switch connection status. Nothing displays if the switch is off-line. The gray time slot indicates the connection to the NCC is down, and the green time slot indicates the connection is up. Move the cursor over a time slot to see the actual date and time when a switch is connected or disconnected.
Description	This shows the user-specified description for the switch.
Serial number	This shows the serial number of the switch.
Usage	This shows the amount of data that has been transmitted or received by the switch’s clients.
	Click this icon to display a greater or lesser number of configuration fields.

Switch > Monitor > Switch: Switch Details
Label	Description
Configuration Click the edit icon to change the device name, description, tags and address. You can also move the device to another site.
Name	This shows the descriptive name of the switch.
MAC Address	This shows the MAC address of the switch.
Serial Number	This shows the serial number model number of the switch.
Description	This shows the user-specified description for the switch.
Address	This shows the user-specified address for the switch.
Tags	This shows the user-specified tag for the switch.
Status
LAN IP	This shows the local (LAN) IP address of the switch. It also shows the IP addresses of the gateway and DNS servers. Click the edit icon to open a screen where you can change the IP address, VLAN ID number and DNS server settings.
DHCP Server	This shows the IP address of the DHCP server.
Public IP	This shows the global (WAN) IP address of the switch.
Topology	Click Show to go to the SITE-WIDE > Monitor > Topology screen. See Topology.
RSTP Status	This shows Disabled when RSTP is disabled on the switch. Otherwise, it shows the name or MAC address of the switch that is the root bridge of the spanning tree.
PoE Status	This shows the amount of power the switch is currently supplying to the connected PoE-enabled devices and the total power the switch can provide to the connected PoE-enabled devices on the PoE ports. Click the edit icon to open the PoE Configuration screen. See PoE Configuration.
History	Click Event log to go to the SWITCH > Monitor > Event log screen.
Configuration status	This shows whether the configuration on the switch is up-to-date.
Firmware	This shows whether the firmware on the switch is up-to-date or there is firmware update available for the switch.
Map	This shows the location of the switch on the Google map.
Photo	This shows the photo of the switch.
Ports This shows the ports on the switch. You can click a port to see the individual port statistics. See Switch Port Details.
Configure ports	Click this button to go to the Switch > Configure > Switch ports screen, where you can view port summary. See Switch Ports.
Live tools
Ping	Enter the host name or IP address of a computer that you want to perform ping in order to test a connection and click Ping.
Port Power Cycle	Enter the number of the port(s) and click the Reset button to disable and enable the port(s) again.
MAC table	This shows what device MAC address, belonging to what VLAN group (if any) is forwarded to which port(s). You can define how it displays and arranges the data in the summary table below.
Reboot switch	Click the Reboot button to restart the switch.
Locator LED	Enter a time interval between 1 and 60 minutes to stop the locator LED from blinking. The locator LED will start to blink for the number of minutes set here Click the button to turn on the locator feature, which shows the actual location of the switch between several devices in the network.
Uplink usage Move the cursor over the chart to see the transmission rate at a specific time.
Zoom	Select to view the statistics in the past twelve hours, day, week, month, three months or six months.
Pan	Click to move backward or forward by one day or week.
Power Consumption
	Select to view the switch power consumption in the past two hours, day, week or month.
	This shows the current, total, maximum and minimum power consumption of the switch.

Switch > Monitor > Switch: Switch Details: PoE Configuration
Label	Description
PoE Mode	Select the power management mode you want the switch to use. Classification mode - Select this if you want the switch to reserve the Max Power (mW) to each powered device (PD) according to the priority level. If the total power supply runs out, PDs with lower priority do not get power to function. Consumption mode - Select this if you want the switch to manage the total power supply so that each connected PD gets a resource. However, the power allocated by the switch may be less than the Max Power (mW) of the PD. PDs with higher priority also get more power than those with lower priority levels.
Port	This is the port index number.
Priority	When the total power requested by the PDs exceeds the total PoE power budget on the switch, you can set the PD priority to allow the switch to provide power to ports with higher priority. Select Critical to give the highest PD priority on the port. Select Medium to set the switch to assign the remaining power to the port after all critical priority ports are served. Select Low to set the switch to assign the remaining power to the port after all critical and medium priority ports are served.
Power-up	Set how the switch provides power to a connected PD at power-up. 802.3af - the switch follows the IEEE 802.3af Power over Ethernet standard to supply power to the connected PDs during power-up. Legacy - the switch can provide power to the connected PDs that require high inrush currents at power-up. Inrush current is the maximum, instantaneous input current drawn by the PD when first turned on. Pre-802.3at - the switch initially offers power on the port according to the IEEE 802.3af standard, and then switches to support the IEEE 802.3at standard within 75 milliseconds after a PD is connected to the port. Select this option if the switch is performing 2-event Layer-1 classification (PoE+ hardware classification) or the connected PD is NOT performing Layer 2 power classification using Link Layer Discovery Protocol (LLDP). 802.3at - the switch supports the IEEE 802.3at High Power over Ethernet standard and can supply power of up to 30W per Ethernet port. IEEE 802.3at is also known as PoE+ or PoE Plus. An IEEE 802.3at compatible device is referred to as Type 2. Power Class 4 (High Power) can only be used by Type 2 devices. If the connected PD requires a Class 4 current when it is turned on, it will be powered up in this mode.
Close	Click this button to exit this screen without saving.
Saving	Click this button to save your changes and close the screen.

Switch > Monitor > Switch: Switch Details: Port Details
Label	Description
Switch / Port	Select to view the port information and connection status in the past two hours, day, week or month.
Port	This drawing shows the ports on the switch. Click a port to go to the corresponding port details screen. The selected port is highlighted in green or gray color.
Configuration Click the edit icon to open the Switch ports screen and show the port(s) that match the filter criteria (the selected port number). See Switch Ports.
Summary	This shows the port’s VLAN settings.
RSTP	This shows whether RSTP is disabled or enabled on the port.
Port mirroring	This shows whether traffic is mirrored on the port.
Status
Name	This shows the name of the port.
Status	This shows the status of the port.
LLDP	This shows the LLDP (Link Layer Discovery Protocol) information received on the port.
History	Click Event log to go to the SWITCH > Monitor > Event log screen.
Bandwidth Utilization
Current Utilization	This shows what percentage of the upstream/downstream bandwidth is currently being used by the port.
Maximum Utilization	This shows the maximum upstream/downstream bandwidth utilization (in percentage).
Minimum Utilization	This shows the minimum upstream/downstream bandwidth utilization (in percentage).
y-axis	The y-axis represents the transmission rate in Kbps (kilobits per second).
x-axis	The x-axis shows the time period over which the traffic flow occurred.
Power Consumption
Total	This shows the total power consumption of the port.
Current Consumption	This shows the current power consumption of the port.
Maximum Consumption	This shows the maximum power consumption of the port.
Minimum Consumption	This shows the minimum power consumption of the port.
y-axis	The y-axis shows how much power is used in Watts.
x-axis	The x-axis shows the time period over which the power consumption is recorded.
Packets Counters
TX/RX Unicast	This shows the number of good unicast packets transmitted/received on the port.
TX/RX Multicast	This shows the number of good multicast packets transmitted/received on the port.
TX/RX Broadcast	This shows the number of good broadcast packets transmitted/received on the port.
TX/RX Pause	This shows the number of 802.3x Pause packets transmitted/received on the port.
Error Packets
RX CRC	This shows the number of packets received with CRC (Cyclic Redundant Check) error(s).
Length	This shows the number of packets received with a length that was out of range.
Runt	This shows the number of packets received that were too short (shorter than 64 octets), including the ones with CRC errors.
IPv4 Address	This shows the IP address of the incoming frame which is forwarded on the port.
MAC Address	This shows the MAC address of the incoming frame which is forwarded on the port.
VLAN	This shows the VLAN group to which the incoming frame belongs.
Cable Diagnostics
Diagnose	Click Diagnose to perform a physical wire-pair test of the Ethernet connections on the port. The following fields display when you diagnose a port.
Channel	An Ethernet cable usually has four pairs of wires. A 10BASE-T or 100BASE-TX port only use and test two pairs, while a 1000BASE-T port requires all four pairs. This displays the descriptive name of the wire-pair in the cable.
Pair Status	OK: The physical connection between the wire-pair is okay. Open: There is no physical connection (an open circuit detected) between the wire-pair. Short: There is an short circuit detected between the wire-pair. Unknown: The Switch failed to run cable diagnostics on the cable connected this port. Unsupported: The port is a fiber port or it is not active.
Cable Length	This displays the total length of the Ethernet cable that is connected to the port when the Pair Status is OK and the switch chipset supports this feature. This shows N/A if the Pair Status is Open or Short. Check the Distance to fault. This shows Unsupported if the switch chipset does not support to show the cable length.
Distance to fault (m)	This displays the distance between the port and the location where the cable is open or shorted. This shows N/A if the Pair Status is OK. This shows Unsupported if the switch chipset does not support to show the distance.
DDMI	This section is available only on an SFP (Small Form Factor Pluggable) port.
DDMI	Click DDMI (Digital Diagnostics Monitoring Interface) to display real-time SFP transceiver information and operating parameters on the port. You can also see the alarm and warning thresholds for temperature, voltage, transmission bias, transmission and receiving power.
Port	This shows the number of the port on the switch.
Vendor	This shows the vendor name of the transceiver installed in the port.
PN	This shows the part number of the transceiver installed in the port.
SN	This shows the serial number of the transceiver installed in the port.
Revision	This shows the firmware version of the transceiver installed in the port.
Date-code	This shows the date the installed transceiver’s firmware was created.
Transceiver	This shows the type and the Gigabit Ethernet standard supported by the transceiver installed in the port.
Calibration	This shows whether the diagnostic information is internally calibrated or externally calibrated.
Current	This shows the current operating parameters on the port, such as transceiver temperature, laser bias current, transmitted optical power, received optical power and transceiver supply voltage.
High Alarm Threshold	This shows the high alarm threshold for temperature, voltage, transmission bias, transmission and receiving power. A trap is sent when the operating parameter is above the threshold.
High Warn Threshold	This shows the high warning threshold for temperature, voltage, transmission bias, transmission and receiving power.
Low Warn Threshold	This shows the low alarm threshold for temperature, voltage, transmission bias, transmission and receiving power. A trap is sent when the operating parameter is below the threshold.
Low Alarm Threshold	This shows the low warning threshold for temperature, voltage, transmission bias, transmission and receiving power.

Switch > Monitor > Client
Label	Description
Switch - Client	Select to view the device information and connection status in the past two hours, day, week or month.
Search	Specify your desired filter criteria to filter the list of clients.
Clients	This shows the number of clients connected to the site network.
Export	Click this button to save the client list as a CSV or XML file to your computer.
Status	This shows whether the client is online (green), or goes off-line (red).
Description	This shows the descriptive name of the client. Click the name to display the individual client statistics. See Client Details.
MAC Address	This shows the MAC address of the client.
Connected to	This shows the name of the Nebula managed switch to which the client is connected. Click the name to display the individual switch statistics. See Switch Details.
Port	This shows the number of the switch port to which the client is connected.
VLAN	This shows the ID number of the VLAN to which the client belongs.
First seen	This shows the first date and time the client was discovered.
Last seen	This shows the last date and time the client was discovered.
LLDP	This shows the LLDP (Link Layer Discovery Protocol) information received from the remote device.
IPv4 address	This shows the IP address of the client.
	Click this icon to display a greater or lesser number of configuration fields.

Switch > Monitor > Client: Client Details
Label	Description
Basic Information
Status	This shows whether the client is online (green), or goes off-line (red). It also shows the last date and time the client was discovered.
LLDP information	This shows the LLDP (Link Layer Discovery Protocol) information received from the remote device.
Manufacturer	This shows the manufacturer of the client device.
Network
IP address	This shows the IP address of the client.
MAC address	This shows the MAC address of the client.

Switch > Monitor > Summary Report
Label	Description
Switch - Summary report	Select to view the report for the past day, week or month. Alternatively, select Select range... to specify a time period the report will span. You can also select the number of results you want to view in a table.
Email report	Click this button to send summary reports by email, change the logo and set email schedules.
Consumption
Total	This shows the total power consumption of the switch ports.
Current Consumption	This shows the current power consumption of the switch ports.
Min Consumption	This shows the minimum power consumption of the switch ports.
Max Consumption	This shows the maximum power consumption of the switch ports.
y-axis	The y-axis shows how much power is used in Watts.
x-axis	The x-axis shows the time period over which the power consumption is recorded.
Top power consumption
	This shows the index number of the Nebula switch.
Name	This shows the descriptive name of the Nebula switch.
Model	This shows the model number of the Nebula switch.
Power Usage	This shows the total amount of power consumed by the Nebula switch’s connected PoE device(s) during the specified period of time.
Peak Power
	This shows the index number of the Nebula switch.
Name	This shows the descriptive name of the Nebula switch.
Model	This shows the model number of the Nebula switch.
Max Power	This shows the maximum power consumption for the Nebula switch’s connected PoE device(s) during the specified period of time.
Power %	This shows what percentage of the Nebula switch’s total power budget has been consumed.
Top uplink port
	This shows the index number of the Nebula switch.
Name	This shows the descriptive name of the Nebula switch.
Model	This shows the model number of the Nebula switch.
Usage	This shows the amount of data that has been transmitted through the switch’s uplink port.
Top port
	This shows the index number of the Nebula switch port.
Name	This shows the descriptive name of the Nebula switch.
Port	This shows the port number on the Nebula switch.
Model	This shows the model number of the Nebula switch.
Usage	This shows the amount of data that has been transmitted through the switch’s port.
Location This shows the location of the Nebula switches on the map.

Switch > Configure > Switch ports
Label	Description
Switch ports	Select to view the detailed information and connection status of the switch port in the past two hours, day, week or month.
Edit	Select the port(s) you want to configure and click this button to configure switch settings on the port(s), such as link aggregation, PoE schedule, LLDP and STP.
Aggregate	Select more than one port and click this button to group the physical ports into one logical higher-capacity link.
Split	Select a trunk group and click this button to delete the trunk group. The ports in this group then are not aggregated. A trunk group is one logical link containing multiple ports.
Tag	Click this button to create a new tag or delete an existing tag.
Search	Specify your desired filter criteria to filter the list of switch ports.
Switch ports	This shows the number of ports on the switch.
Export	Click this button to save the switch port list as a CSV or XML file to your computer.
Switch/Port	This shows the switch name and port number. If the port is added to a trunk group, this also shows whether it is configured as a static member of the trunk group (Static) or configured to join the trunk group via LACP (LACP). Click details to display the port details screen. See Switch Port Details.
Port name	This shows the descriptive name of the port.
#Port	This shows the port number.
LLDP	This shows whether Link Layer Discovery Protocol (LLDP) is supported on the port.
Received broadcast packets	This shows the number of good broadcast packets received.
Received bytes	This shows the number of bytes received on this port.
Received packets	This shows the number of received frames on this port.
Sent broadcast packets	This shows the number of good broadcast packets transmitted.
Sent bytes	This shows the number of bytes transmitted on this port.
Sent multicast packets	This shows the number of good multicast packets transmitted.
Sent packets	This shows the number of transmitted frames on this port.
Total bytes	This shows the total number of bytes transmitted or received on this port.
Enabled	This shows whether the port is enabled or disabled.
Link	This shows the speed of the Ethernet connection on this port. Auto (auto-negotiation) allows one port to negotiate with a peer port automatically to obtain the connection speed and duplex mode that both ends support.
Status	This shows the connection status of the port. The gray time slot indicates the connection to an Ethernet device is down, and the green time slot indicates the connection is up. Move the cursor over a time slot to see the actual date and time when a port is connected or disconnected.
RADIUS policy	This shows the name of RADIUS authentication policy applied to the port.
Allowed VLAN	This shows the VLANs from which the traffic comes is allowed to be transmitted or received on the port
PoE	This shows whether PoE is enabled on the port.
RSTP	This shows whether RSTP is enabled on the port
Schedule	This shows the name of the PoE schedule applied to the port.
Type	This shows the port type (Trunk or Access).
PVID	This shows the port VLAN ID. It is a tag that adds to incoming untagged frames received on the port so that the frames are forwarded to the VLAN group that the tag defines.
Tag	This shows the user-specified tag that the switch adds to the outbound traffic on this port.
Storm Control	This shows whether traffic storm control is enabled or disabled on the port.
Broadcast (pkt/s)	This shows the maximum number of broadcast packets the switch accepts per second on this port.
Multicast (pkt/s)	This shows the maximum number of multicast packets the switch accepts per second on this port.
DLF (pkt/s)	This shows the maximum number of DLF packets the switch accepts per second on this port.
Loop Guard	This shows whether loop guard is enabled or disabled on the port.
	Click this icon to display a greater or lesser number of configuration fields.

Switch > Configure > Switch ports: Edit
Label	Description
Switch ports	This shows the switch name and port number for the port(s) you are configuring in this screen.
Name	Enter a descriptive name for the port(s).
Tags	Select or create a new tag for outgoing traffic on the port(s).
Enabled	Select to enable or disable the port(s). A port must be enabled for data transmission to occur.
RSTP	Select to enable or disable RSTP on the port(s).
STP guard	Select Root guard to prevent the switch(es) attached to the port(s) from becoming the root bridge. Select BPDU guard to have the switch shut down the port(s) if there is any BPDU received on the port(s). Otherwise, select Disable.
LLDP	Select to enable or disable LLDP on the port(s).
PoE	Select Enable to provide power to a PD connected to the port(s).
Link	Select the speed and the duplex mode of the Ethernet connection on the port(s). Choices are Auto-1000M, 10M/Half Duplex, 10M/Full Duplex, 100M/Half Duplex, 100M/Full Duplex and 1000M/Full Duplex (Gigabit connections only).
PoE schedule	This field is available only when you enable PoE. Select a pre-defined schedule (created using the Switch > Configure > PoE schedule screen) to control when the switch enables PoE to provide power on the port(s). You must select Unschedule in the PoE schedule field before you can disable PoE on the port(s). If you enable PoE and select Unschedule, PoE is always enabled on the port(s).
Loop guard	Select to enable or disable loop guard on the port(s). The loop guard feature can not be enabled on the ports that have Spanning Tree Protocol (RSTP, MRSTP or MSTP) enabled.
Storm Control	Select to enable or disable broadcast storm control on the port(s).
Broadcast (pkt/s)	Specifies the maximum number of broadcast packets the switch accepts per second on the port(s).
Multicast (pkt/s)	Specifies the maximum number of multicast packets the switch accepts per second on the port(s).
DLF (pkt/s)	Specifies the maximum number of DLF packets the switch accepts per second on the port(s).
Type	Set the type of the port. Select Access to configure the port as an access port which can carry traffic for just one single VLAN. Frames received on the port are tagged with the port VLAN ID. Select Trunk to configure the port as a trunk port which can carry traffic for multiple VLANs over a link. A trunk port is always connected to a switch or router.
PVID	A PVID (Port VLAN ID) is a tag that adds to incoming untagged frames received on a port so that the frames are forwarded to the VLAN group that the tag defines. Enter a number between 1and 4094 as the port VLAN ID.
RADIUS policy	This field is available only when you select Access in the Type field. Select the name of the pre-configured RADIUS policy that you want to apply to the port(s). Select Open if you don’t want to enable port authentication on the port(s).
Allowed VLANs	This field is available only when you select Trunk in the Type field. Specify the VLANs from which the traffic comes is allowed to be transmitted or received on the port(s).

Switch > Configure > IP filtering
Label	Description
	Click the icon of a rule and drag the rule up or down to change the order.
Policy	Select to allow or deny traffic that matches the filtering criteria in the rule.
Protocol	Select the type of IP protocol used to transport the traffic to which the rule is applied.
Source	Enter the source IP address of the packets that you want to filter.
Src port	Enter the source port number(s) that defines the traffic type.
Destination	Enter the destination IP address of the packets that you want to filter
Dst port	Enter the destination port number(s) that defines the traffic type.
VLAN	Enter the ID number of the VLAN group to which the matched traffic belongs.
Description	Enter a descriptive name for the rule.
Delete	Click the delete icon to remove the rule.
Add	Click this button to create a new rule.

Switch > Configure > RADIUS policy
Label	Description
Password for MAC-Base Auth	Type the password the switch sends along with the MAC address of a client for authentication with the RADIUS server. You can enter up to 32 printable ASCII characters.
Name	Enter a descriptive name for the policy.
RADIUS policy type	Select MAC-Base if you want to validate access to the port(s) based on the MAC address and password of the client. Select 802.1x if you want to validate access to the port(s) based on the user name and password provided by the client.
Guest VLAN	A guest VLAN is a pre-configured VLAN on the switch that allows non-authenticated users to access limited network resources through the switch. Enter the number that identifies the guest VLAN.
Port security	Click On to enable port security on the port(s). Otherwise, select Off to disable port security on the port(s).
Limited numbers of MAC address	This field is configurable only when you enable port security. Specify the maximum number of MAC addresses that may be learned on a port.
Switch ports	This shows the number of the switch ports to which this policy is applied.
Add	Click this button to create a new policy.

Switch > Configure > PoE schedule: Add
Label	Description
Name	Enter a descriptive name for this schedule for identifying purposes.
Schedule templates	Select a pre-defined schedule template or select Custom schedule and manually configure the day and time at which PoE is enabled.
Day	This shows the day of the week.
Availability	Click On to enable PoE on this day. Otherwise, select Off to turn PoE off.
From - To	Specify the hour and minute when the schedule begins and ends each day
Time display	Select the time format in which the time is displayed.
Close	Click this button to exit this screen without saving.
Add	Click this button to save your changes and close the screen.

Switch > Configure > Switch configuration
Label	Description
VLAN configuration
Management VLAN	Enter the VLAN identification number associated with the switch IP address. This is the VLAN ID of the CPU and is used for management only. The default is "1". All ports, by default, are fixed members of this "management VLAN" in order to manage the device from any port. If a port is not a member of this VLAN, then users on that port cannot access the device. To access the switch make sure the port that you are connected to is a member of Management VLAN.
STP configuration
Rapid spanning tree protocol (RSTP)	Select On to enable RSTP on the switch. Otherwise, select Off.
STP bridge priority	Bridge priority is used in determining the root switch, root port and designated port. The switch with the highest priority (lowest numeric value) becomes the STP root switch. If all switches have the same priority, the switch with the lowest MAC address will then become the root switch. The lower the numeric value you assign, the higher the priority for this bridge. Click the button to create a new entry. Select the switch(es) for which you want to configure the bridge priority, and select a value from the drop-down list box.
Quality of service
Quality of service	Enter a VLAN ID and select the priority level that the switch assigns to frames belonging to this VLAN. Click Add to create a new entry.
IGMP snooping
IGMP snooping	Select On to enable IGMP snooping on the switch. Otherwise, select Off.
Port mirroring
Port mirroring	Click Add to create a new entry. Select the switch for which you want to configure port mirroring, specify the destination port you copy the traffic to in order to examine it in more detail without interfering with the traffic flow on the original port(s), and also enter the source port on which you mirror the traffic.
Authentication servers
RADIUS server	Click Add to create a new RADIUS server entry. Enter the IP address of an external RADIUS server, the port of the RADIUS server for authentication (default 1812), and a password (up to 32 alphanumeric characters) as the key to be shared between the external RADIUS server and the switch.
Voice VLAN
Voice VLAN	Select On to enable the Voice VLAN feature on the switch. Otherwise, select Off. It groups the voice traffic with defined priority into an assigned VLAN which enables the separation of voice and data traffic coming onto the switch port.
Voice VLAN ID	Enter a VLAN ID number.
Priority	Select the priority level of the Voice VLAN from 1 to 6.
OUI	Click the button to add MAC address of IP phones from specific manufacturers by using its ID from the Organizationally Unique Identifiers (OUI). You also need to type the mask for the specified MAC address to determine which bits a packet’s MAC address should match. Enter “f” for each bit of the specified MAC address that the IP phone’s MAC address should match. Enter “0” for the bit(s) of the IP phone’s MAC address, which can be of any hexadecimal character(s).
DHCP Server Guard
DHCP Server Guard	Select On to enable the DHCP server guard feature on the switch in order to prevent illegal DHCP servers. Only the first DHCP server that assigned the switch IP address is allowed to assign IP addresses to devices in this management VLAN. Otherwise, select Off to disable it.