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Page 236 / 331 Scroll up to view Page 231 - 235
Chapter 24 Traffic Status
VMG1312-B Series User’s Guide
236
The following table describes the fields in this screen.
24.3
The LAN Status Screen
Click
System Monitor > Traffic Status
> LAN
to open the following screen. The figure in this
screen shows the interface that is currently connected on the Device.
Table 104
System Monitor > Traffic Status > WAN
LABEL
DESCRIPTION
Connected
Interface
This shows the name of the WAN interface that is currently connected.
Packets Sent
Data
This indicates the number of transmitted packets on this interface.
Error
This indicates the number of frames with errors transmitted on this interface.
Drop
This indicates the number of outgoing packets dropped on this interface.
Packets Received
Data
This indicates the number of received packets on this interface.
Error
This indicates the number of frames with errors received on this interface.
Drop
This indicates the number of received packets dropped on this interface.
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more
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more...
to show more information. Click
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to hide them.
Disabled
Interface
This shows the name of the WAN interface that is currently disconnected.
Packets Sent
Data
This indicates the number of transmitted packets on this interface.
Error
This indicates the number of frames with errors transmitted on this interface.
Drop
This indicates the number of outgoing packets dropped on this interface.
Packets Received
Data
This indicates the number of received packets on this interface.
Error
This indicates the number of frames with errors received on this interface.
Drop
This indicates the number of received packets dropped on this interface.
Page 237 / 331
Chapter 24 Traffic Status
VMG1312-B Series User’s Guide
237
Figure 136
System Monitor > Traffic Status > LAN
The following table describes the fields in this screen.
24.4
The NAT Status Screen
Click
System Monitor > Traffic Status
> NAT
to open the following screen. The figure in this
screen shows the NAT session statistics for hosts currently connected on the Device.
Table 105
System Monitor > Traffic Status > LAN
LABEL
DESCRIPTION
Refresh Interval
Select how often you want the Device to update this screen.
Interface
This shows the LAN or WLAN interface.
Bytes Sent
This indicates the number of bytes transmitted on this interface.
Bytes Received
This indicates the number of bytes received on this interface.
more...hide
more
Click
more...
to show more information. Click
hide more
to hide them.
Interface
This shows the LAN or WLAN interfaces.
Sent (Packets)
Data
This indicates the number of transmitted packets on this interface.
Error
This indicates the number of frames with errors transmitted on this interface.
Drop
This indicates the number of outgoing packets dropped on this interface.
Received (Packets)
Data
This indicates the number of received packets on this interface.
Error
This indicates the number of frames with errors received on this interface.
Drop
This indicates the number of received packets dropped on this interface.
Page 238 / 331
Chapter 24 Traffic Status
VMG1312-B Series User’s Guide
238
Figure 137
System Monitor > Traffic Status > NAT
The following table describes the fields in this screen.
Table 106
System Monitor > Traffic Status > NAT
LABEL
DESCRIPTION
Refresh Interval
Select how often you want the Device to update this screen.
Device Name
This displays the name of the connected host.
IP Address
This displays the IP address of the connected host.
MAC Address
This displays the MAC address of the connected host.
No. of Open
Session
This displays the number of
NAT sessions currently opened for the connected
host.
Total
This displays what percentage of NAT sessions the Device can support is currently
being used by all connected hosts.
Page 239 / 331
VMG1312-B Series User’s Guide
239
C
HAPTER
25
ARP Table
25.1
Overview
Address Resolution Protocol (ARP) is a protocol for mapping an Internet Protocol address (IP
address) to a physical machine address, also known as a Media Access Control or MAC address, on
the local area network.
An IP (version 4) address is 32 bits long. In an Ethernet LAN, MAC addresses are 48 bits long. The
ARP Table maintains an association between each MAC address and its corresponding IP address.
25.1.1
How ARP Works
When an incoming packet destined for a host device on a local area network arrives at the device,
the device's ARP program looks in the ARP Table and, if it finds the address, sends it to the device.
If no entry is found for the IP address, ARP broadcasts the request to all the devices on the LAN.
The device fills in its own MAC and IP address in the sender address fields, and puts the known IP
address of the target in the target IP address field. In addition, the device puts all ones in the target
MAC field (FF.FF.FF.FF.FF.FF is the Ethernet broadcast address). The replying device (which is either
the IP address of the device being sought or the router that knows the way) replaces the broadcast
address with the target's MAC address, swaps the sender and target pairs, and unicasts the answer
directly back to the requesting machine. ARP updates the ARP Table for future reference and then
sends the packet to the MAC address that replied.
Page 240 / 331
Chapter 25 ARP Table
VMG1312-B Series User’s Guide
240
25.2
ARP Table Screen
Use the ARP table to view IP-to-MAC address mapping(s). To open this screen, click
System
Monitor
>
ARP Table
.
Figure 138
System Monitor > ARP Table
The following table describes the labels in this screen.
Table 107
System Monitor > ARP Table
LABEL
DESCRIPTION
#
This is the ARP table entry number.
IPv4/IPv6
Address
This is the learned IPv4 or IPv6 IP address of a device connected to a port.
MAC Address
This is the MAC address of the device with the listed IP address.
Device
This is the type of interface used by the device. You can click on the device type to go to its
configuration screen.

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