Firmware Version: 1.12
Hardware Version: A2
Product Page: DIR-855
Setup Advanced Tools Status Support

Device Info

All of your Internet and network connection details are displayed on the Device Info page. The firmware version is also displayed here.

Note: Some browsers have limitations that make it impossible to update the WAN status display when the status changes. Some browsers require that you refresh the display to obtain updated status. Some browsers report an error condition when trying to obtain WAN status.

Depending on the type of WAN connection, you can take one of the following sets of actions:

DHCP Connection
Clicking the DHCP Release button unassigns the router's IP address. The router will not respond to IP messages from the WAN side until you click the DHCP Renew button or power-up the router again. Clicking the DHCP Renew button causes the router to request a new IP address from the ISP's server.
PPPoE, PPTP, L2TP Connection
Depending on whether the WAN connection is currently established, you can click either the Connect to attempt to establish the WAN connection or the Disconnect to break the WAN connection.
Static IP
Static IP mode is always on, so no action buttons are available.
Wireless LAN
This area of the screen reflects configuration settings from the Setup → Wireless Settings page, the Advanced → WISH page and the Advanced → Wi-Fi Protected Setup page. The MAC Address is the factory-assigned identifier of the wireless card.
LAN Computers
This area of the screen continually updates to show all DHCP enabled computers and devices connected to the LAN side of your router. The detection "range" is limited to the address range as configured in DHCP Server. Computers that have an address outside of this range will not show. If the DHCP Client (i.e. a computer configured to "Automatically obtain an address") supplies a Host Name then that will also be shown. Any computer or device that has a static IP address that lies within the detection "range" may show, however its host name will not.
IGMP Multicast memberships
If IGMP is enabled, this area of the screen shows all multicast groups of which any LAN devices are members.

Wireless

The wireless section allows you to view the wireless clients that are connected to your wireless router.

MAC Address
The Ethernet ID (MAC address) of the wireless client.
IP Address
The LAN-side IP address of the client.
Mode
The transmission standard being used by the client. Values are 11a, 11b, 11g, or 11n for 802.11a, 802.11b, 802.11g, or 802.11n respectively.
Rate
The actual transmission rate of the client in megabits per second.
Signal
This is a relative measure of signal quality. The value is expressed as a percentage of theoretical best quality. Signal quality can be reduced by distance, by interference from other radio-frequency sources (such as cordless telephones or neighboring wireless networks), and by obstacles between the router and the wireless device.

WISH Sessions

The WISH Sessions page displays full details of active local wireless sessions through your router when WISH has been enabled. A WISH session is a conversation between a program or application on a wirelessly connected LAN-side computer and another computer, however connected.

Originator
The IP address and, where appropriate, port number of the computer that originated a network connection.
Target
The IP address and, where appropriate, port number of the computer to which a network connection has been made.
Protocol
The communications protocol used for the conversation.
State
State for sessions that use the TCP protocol.
  • NO: None -- This entry is used as a placeholder for a future connection that may occur.
  • SS: SYN Sent -- One of the systems is attempting to start a connection.
  • EST: Established -- the connection is passing data.
  • FW: FIN Wait -- The client system has requested that the connection be stopped.
  • CW: Close Wait -- the server system has requested that the connection be stopped.
  • TW: Time Wait -- Waiting for a short time while a connection that was in FIN Wait is fully closed.
  • LA: Last ACK -- Waiting for a short time while a connection that was in Close Wait is fully closed.
  • CL: Closed -- The connection is no longer active but the session is being tracked in case there are any retransmitted packets still pending.
Priority
The priority given to packets sent wirelessly over this conversation by the WISH logic. The priorities are:
  • BK: Background (least urgent).
  • BE: Best Effort.
  • VI: Video.
  • VO: Voice (most urgent).
Time Out
The number of seconds of idle time until the router considers the session terminated. The initial value of Time Out depends on the type and state of the connection.
300 seconds
UDP connections.
240 seconds
Reset or closed TCP connections. The connection does not close instantly so that lingering packets can pass or the connection can be re-established.
7800 seconds
Established or closing TCP connections.

Logs

The router automatically logs (records) events of possible interest in its internal memory. If there is not enough internal memory for all events, logs of older events are deleted, but logs of the latest events are retained. The Logs option allows you to view the router logs. You can define what types of events you want to view and the level of events to view. This router also has internal Syslog Server support so you can send the log files to a computer on your network that is running a Syslog utility.

What to View
Select the kinds of events that you want to view.
  • Firewall and Security
  • System
  • Router Status
View Levels
Select the level of events that you want to view.
  • Critical
  • Warning
  • Informational
Apply Log Settings Now
Click this button after changing Log Options to make them effective and permanent.
Refresh
Clicking this button refreshes the display of log entries. There may be new events since the last time you accessed the log.
Clear
Clicking this button erases all log entries.
Email Now
If you provided email information with the Tools → Email screen, clicking the Email Now button sends the router log to the configured email address.
Save Log
Select this option to save the router log to a file on your computer.

Statistics

The Statistics page displays all of the LAN, WAN, and Wireless packet transmit and receive statistics.

Sent
The number of packets sent from the router.
Received
The number of packets received by the router.
TX Packets Dropped
The number of packets that were dropped while being sent, due to errors, collisions, or router resource limitations.
RX Packets Dropped
The number of packets that were dropped while being received, due to errors, collisions, or router resource limitations.
Collisions
The number of packets that were dropped due to Ethernet collisions (two or more devices attempting to use an Ethernet circuit at the same time).
Errors
The number of transmission failures that cause loss of a packet. A noisy radio-frequency environment can cause a high error rate on the wireless LAN.

Internet Sessions

The Internet Sessions page displays full details of active Internet sessions through your router. An Internet session is a conversation between a program or application on a LAN-side computer and a program or application on a WAN-side computer.

Local
The IP address and, where appropriate, port number of the local application.
NAT
The port number of the LAN-side application as viewed by the WAN-side application.
Internet
The IP address and, where appropriate, port number of the application on the Internet.
Protocol
The communications protocol used for the conversation.
State
State for sessions that use the TCP protocol.
  • NO: None -- This entry is used as a placeholder for a future connection that may occur.
  • SS: SYN Sent -- One of the systems is attempting to start a connection.
  • EST: Established -- the connection is passing data.
  • FW: FIN Wait -- The client system has requested that the connection be stopped.
  • CW: Close Wait -- the server system has requested that the connection be stopped.
  • TW: Time Wait -- Waiting for a short time while a connection that was in FIN Wait is fully closed.
  • LA: Last ACK -- Waiting for a short time while a connection that was in Close Wait is fully closed.
  • CL: Closed -- The connection is no longer active but the session is being tracked in case there are any retransmitted packets still pending.
Dir
The direction of initiation of the conversation:
Out
Initiated from LAN to WAN.
In
Initiated from WAN to LAN.
Priority
The preference given to outbound packets of this conversation by the QoS Engine logic. Smaller numbers represent higher priority.
Time Out
The number of seconds of idle time until the router considers the session terminated. The initial value of Time Out depends on the type and state of the connection.
300 seconds
UDP connections.
240 seconds
Reset or closed TCP connections. The connection does not close instantly so that lingering packets can pass or the connection can be re-established.
7800 seconds
Established or closing TCP connections.