Linksys E8400 User manual

User Guide
AC2400
DUAL-BAND
GIGABIT ROUTER
Model # E8400

Contents
Product Overview .........................................................................................................3
Top view.............................................................................................................................................................3
Back view...........................................................................................................................................................4
Setting Up: Basics ........................................................................................................5
Where to find more help ...............................................................................................................................5
How to install your router............................................................................................................................5
Advanced Configuration ............................................................................................8
How to open the browser-based utility...................................................................................................8
Basic Router Settings...................................................................................................................................9
Language........................................................................................................................................................10
Internet Setup
.............................................................................................................................................. 10
Basic Wireless Settings ............................................................................................................................11
Wireless Security.......................................................................................................13
Security Option Settings..........................................................................................................................13
WPA2/WPA Mixed Mode, WPA2 Personal ..........................................................................................13
WEP...................................................................................................................................................................13
Disabled...........................................................................................................................................................14
Troubleshooting .........................................................................................................15
Your router was not successfully set up.............................................................................................15
Your Internet cable is not plugged in message.................................................................................16
Cannot access your router message....................................................................................................17
After setup.....................................................................................................................................................18
The Internet appears to be unavailable ...............................................................................................18
Specifications .............................................................................................................19
Linksys E8400 .............................................................................................................................................19
Environmental...............................................................................................................................................19
2

Product Overview
Top view
3

Back view
1. Adjustable external antennas—This router ships with four adjustable external antennas that
should be connected to the router before powering it on. To connect the antennas, twist the
antenna clockwise onto the antenna connector on the router.
Note—For best performance, position the side antennas vertically as shown in the picture.
2. USB 3.0 port—Connect and share a USB drive or USB printer on your network or on the Internet.
3. Combo USB 2.0/eSATA port------Connect and share a USB/eSATA drive or a USB printer on your
network or on the Internet.
4. Ethernet ports------Connect Ethernet cables (also called network or Internet cables) to these
Gigabit Ethernet (10/100/1000) ports and to other wired devices on your network.
5. Internet port------ Connect an Ethernet cable to this port and to your modem.
6. Wi-Fi button------Press to turn the wireless function on and off.
7. Wi-Fi Protected Setup™ (WPS) button------Press to easily configure wireless security on Wi-Fi
Protected Setup-enabled network devices.
8. Reset button------Press and hold until all port lights blink at the same time to reset the router to
its factory defaults.
9. Power port------Connect the included AC power adapter to this port.
10. Power switch------ Press | (on) to power on the router.
4

Setting Up: Basics
Where to find more help
In addition to this user guide, you can find help at Linksys.com/support/E8400 (documentation,
downloads, FAQs, technical support, live chat, forums)
Note—Licenses and notices for third party software used in this product may be viewed on
http://support.linksys.com/en-us/license. Please contact http://support.linksys.com/en-
us/gplcodecenter for questions or GPL source code requests.
How to install your router
1. If replacing an existing router, disconnect that router first.
2. Connect the antennas and plug in the router to a power source. Press power switch to | (on) to
power on the router.
3. Connect the Internet cable from your modem to the yellow Internet port on your router. Wait
until the flashing green LED between the Reset button and power port is solid.
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4. Connect to the network name shown in the Quick Start Guide that came with your router. (You
can change the network name and password later.) Select the option to automatically connect
to this network in the future. If you need help connecting to the network refer to your device
documentation on the provided CD.
Note—You will not have Internet access until router setup is complete.
5. Type 192.168.1.1 in a browser to start setup.
Tip—Print the next page, then record your router and account settings in the table as a
reference. Store your notes in a safe place.
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2.4 GHz Network
Name
Network Password
5 GHz Network
Name
Network Password
Router Password
Guest Network
Name
Guest Network
Password
7

Advanced Configuration
How to open the browser-based utility
To access some advanced settings, you need to open the browser-based utility. Make sure you are
connected to the router, open a web browser and go to 192.168.1.1.
The router will prompt you for a username and password.
If you changed the password during setup, enter ‘‘admin’’ in the Username field and the new password.
Click LOGIN. If you didn’t change the password, or skipped setup altogether, the default username
and password are ‘‘admin’’ and ‘‘admin’’.
8

Basic Router Settings
This screen allows you to change the router’s basic configuration.
9

Language
Select your language—To change language, select one from the drop-down menu. The language of
the browser-based utility will change within five seconds.
Internet Setup
The Internet Setup section configures the router to your Internet connection. This information can be
provided by your Internet Service Provider (ISP).
Internet Connection Type—Select the type of Internet connection your ISP provides from the drop-
down menu.
oAutomatic Configuration – DHCP (default)
Keep the default only if your ISP supports DHCP or if you connect using a dynamic IP
address. (This option usually applies to cable connections.)
oStatic IP
Select if you are required to use a fixed IP address to connect to the Internet.
oPPPoE
Select if you have a DSL connection and your ISP uses Point-to-Point Protocol over
Ethernet (PPPoE).
oPPTP
Point-to-Point Tunneling Protocol (PPTP) is a service that generally applies to connections
in Europe. If your PPTP connection supports DHCP or a dynamic IP address, select Obtain
an IP Address Automatically. If you are required to use a fixed IP address to connect to the
Internet, select Specify an IP Address and configure the options that appear.
oL2TP
Layer 2 Tunneling Protocol (L2TP) is a service that generally applies to connections in Israel.
Note—Connect on Demand or Keep Alive are options when choosing PPPoE, PPTP and
L2TP. They let you choose whether the router connects to the Internet only as needed
(useful if your ISP charges for connect time), or if the router should always be connected.
Select the appropriate option.
oTelstra Cable
Telstra Cable is a service that generally applies to connections in Australia.
oBridge Mode
Bridge Mode disables all router capabilities and turns the router into an access point. The
router will cease to act as a DHCP server and its built-in firewall as well as the NAT
features will no longer be in effect.
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oDS-Lite
The Dual Stack Lite (DS-Lite) feature enables legacy IPv4 hosts and server
communication over both IPv4 and IPv6 networks. For advanced users with older
networking equipment.
oWireless Bridge
A wireless bridge wirelessly connects to your main router and can share the Internet
connection with devices connected to the bridge’s Ethernet ports.
Basic Wireless Settings
Network Mode------Select the wireless standards your network will support.
oMixed (default)
Keep the default if you have Wireless-N (2 4 GHz), Wireless-G, and Wireless-B devices in
your network.
oWireless-B/G Only
Select if you have both Wireless-B and Wireless-G (2.4 GHz) devices in your network.
oWireless-B Only
Select if you have only Wireless-B devices.
oWireless-G Only
Select if you have only Wireless-G devices.
oWireless-N Only
Select if you have only Wireless-N (2.4 GHz) devices.
oDisabled
Select if you have no Wireless-B, Wireless-G, and Wireless-N (2.4 GHz) devices in your
network.
Note—You may select Mixed, Wireless-A/N Only or Disabled for the 5 GHz band. If you are
not sure which mode to select, keep the default, Mixed.
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Network Name (SSID)
The Service Set Identifier (SSID) is a name used by devices to connect to a wireless network. SSIDs
are case-sensitive and must not exceed 32 characters. The default SSIDs for the 2.4 GHz and 5 GHz
networks are LinksysXXXXX and LinksysXXXXX_5GHz, respectively. The Xs represent the last five
digits of the router’s serial number, which can be found on the bottom of the router. If you changed
the SSID, both bands have the new SSIDs. You may give them different names through the browser-
based utility.
Note—If you restore the router’s factory default settings (by pressing the Reset button or
using the Administration > Factory Defaults screen), the Network Name will return to its
default value. Change the Network Name back to its original name, or you will have to
reconnect all devices on your wireless network to the new network name.
Channel Width
Keep the default, Auto (20 MHz or 40 MHz), for best performance in a 2.4 GHz network using
Wireless-B, Wireless-G and Wireless-N (2.4 GHz) devices. For a channel width of 20 MHz, select 20
MHz only. For the best performance in a 5 GHz network, keep the default 20, 40 or 80 MHz.
Channel
Select the channel from the drop-down list. Keep the default, Auto, if you are not sure which channel
to select.
SSID Broadcast
Keep the default, Enabled, to broadcast the router’s SSID. When wireless clients survey the local area
for wireless networks to associate with they will detect the SSID broadcast by the router. Attempting
to hide your Wi-Fi name does not make your Wi-Fi more secure. Anyone truly interested in accessing
your network can find it even if you turn off this feature. If you still do not want to broadcast the
router’s SSID, select Disabled.
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Wireless Security
The router offers the following wireless security options:
WPA2/WPA Mixed Mode, WPA2 Personal and WEP. (WPA stands for Wi-Fi Protected Access. WEP
stands for Wireless Equivalent Privacy).
Security Option Strength
WPA2 Personal Strongest
WPA2/WPA Mixed Mode WPA2: Strongest
WPA: Strong
WEP Basic
Security Option Settings
WPA2/WPA Mixed Mode, WPA2 Personal
Notes—If you select WPA2/WPA Mixed Mode, each device in your wireless network MUST
use WPA2/WPA and the same passphrase.
If you select WPA2 Personal, each device in your wireless network MUST use WPA2 Personal
and the same passphrase.
Passphrase------Enter a passphrase of 8-63 characters. This is the Wi-Fi password that provides
access to the network. It can be the same as entered in setup.
WEP
WEP is a basic encryption method, which is not as secure as WPA2/WPA. WEP is not available on 5
GHz network.
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Note—If you select WEP, each device in your wireless network MUST use WEP and the same
encryption and shared key.
Encryption------ Select a level of WEP encryption: 40/64-bit, 10 hex digits or 104/128-bit, 26 hex
digits. The default is 40/64-bit, 10 hex digits.
Passphrase------Enter a passphrase to automatically generate WEP keys. Then click Generate.
Key 1------ If you did not enter a passphrase, enter the WEP key manually.
Disabled
If you choose to disable wireless security, you will be informed that wireless security is disabled when
you first attempt to access the Internet. You will be given the option to enable wireless security, or
confirm that you understand the risks but still wish to proceed without wireless security.
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Troubleshooting
You can find more help from our award-winning customer support at Linksys.com/support/E8400.
Your router was not successfully set up
If you could not complete setup in the browser-based interface, you can try the following:
•Press and hold the Reset button on your router with a paperclip or pin until the illuminated
Linksys logo turns off and starts blinking (about 10 seconds). Type 192.168.1.1 in a
browser to try setup again.
•Temporarily disable your computer’s firewall (see the security software’s instructions for
help). Install the router again.
•If you have another computer, use that computer to install the router.
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Your Internet cable is not plugged in message
If you get a “Your Internet cable is not plugged in” message when trying to set up your router:
•Make sure that an Ethernet or Internet cable (or a cable like the one supplied with your router)
is securely connected to the yellow Internet port on the back of the router and to the
appropriate port on your modem. This port on the modem is usually labeled Ethernet.
•Make sure that your modem is connected to power and is turned on.
•If your Internet service is cable, verify that the cable modem’s CABLE port is connected to the
coaxial cable provided by your ISP.
•If your Internet service is DSL, make sure that the DSL phone line is connected to the modem’s
DSL port.
•If your computer was previously connected to your modem with a USB cable, disconnect the
USB cable.
•Install the router again.
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Cannot access your router message
To access your router, you must be connected to your own network. If you currently have wireless
Internet access, the problem may be that you have accidentally connected to a different wireless
network.
To fix the problem on Windows computers, do the following*:
1. On your Windows desktop, click on the wireless icon in the system tray. A list of available
networks will appear.
2. Click your own network name. Click Connect. In the example below, the computer was
connected to another wireless network named wraith_5GHz. The wireless network name of the
Linksys E8400 router, Damaged_Beez2.4 in this example, is shown selected.
3. If you are prompted to enter a network security key, type your password (security key) into the
network security key field. Click OK.
4. Your computer will connect to the network, and you should be able to access the router.
*Depending on your version of Windows, there could be some differences in wording or icons in these
steps.
To fix the problem on Mac computers, do the following:
1. In the menu bar across the top of the screen, click the Wi-Fi icon. A list of wireless networks will
appear.
2. In the example below, the computer was connected to another wireless network named
wraith_5GHz. The wireless network name of the Linksys E8400 router, Damaged_Beez2.4 in
this example, is shown selected.
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3. Click the wireless network name of your Linksys E8400 router (Damaged_Beez2.4 in the
example).
4. Type your wireless network password (Security Key) into the Password field. Click OK.
After setup
The Internet appears to be unavailable
If the Internet has difficulty communicating with your router, the problem may appear as a “Cannot
find [Internet address]” message in your Web browser. If you know that the Internet address is
correct, and if you’ve tried several valid Internet addresses with the same result, the message could
mean that there’s a problem with your ISP or modem communicating with your router.
Try the following:
•Make sure that the network and power cables are securely connected.
•Make sure that the power outlet that your router is connected to has power.
•Reboot your router.
•Contact your ISP and ask about outages in your area.
The most common method of troubleshooting your router is to turn it off, then back on again. Your
router can then reload its custom settings, and other devices (such as the modem) will be able to
rediscover the router and communicate with it. This process is called rebooting.
To reboot your router using the power cord, do the following:
1. Disconnect the power cord from the router and the modem.
2. Wait 10 seconds, and reconnect the power cord to the modem. Make sure it has power.
3. Wait until the modem’s online indicator has stopped blinking (about two minutes). Reconnect
the power cord to the router.
4. Wait until the flashing green LED between the Reset button and power port is solid. Wait two
minutes before trying to connect to the Internet from a computer.
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Specifications
Linksys E8400
Model Name
AC2400 Dual-Band Gigabit Router
Model Number E8400
Switch Port Speed 10/100/1000 Mbps (Gigabit Ethernet)
Radio Frequency
2.4 GHz and 5 GHz
# of Antennas 4 external
Ports USB 2.0 / eSATA combo, USB 3.0, Ethernet (1-
4), Internet, Power
Buttons
Wi-Fi Protected Setup, Reset, Wi-Fi, Power
LEDs Back panel: Ethernet (1-4), Internet, Wi-Fi, Wi-Fi
Protected Setup
UPnP
Supported
Security Features
WEP (2.4 GHz network only), WPA, WPA2
Security Key Bits
Up to 128-bit encryption
Storage File System Support
FAT, NTFS, and HFS+
Environmental
Dimensions 10.09“ x 2.21” x 7.22”
(256.3 mm x 56.2 mm x 183.5 mm) without
antennas
Unit Weight 19.55 oz (554.2 g) without antennas
22.16 oz (628.2 g) with antennas
Power
12V, 3A
Certifications FCC, IC, CE, Wi-Fi (IEEE 802.11 a/b/g/n/ac),
Windows 7, Windows 8
Operating Temperature
32 to 104°F (0 to 40°C)
Storage Temperature
-4 to 140°F (-20 to 60°C)
Operating Humidity
10% to 80% relative humidity, non-condensing
Storage Humidity
5% to 90% non-condensing
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Notes:
For regulatory, warranty, and safety information, see the CD that came with your router or go to
Linksys.com/support/E8400.
Specifications are subject to change without notice.
Maximum performance derived from IEEE Standard 802.11 specifications. Actual performance can
vary, including lower wireless network capacity, data throughput rate, range and coverage.
Performance depends on many factors, conditions and variables, including distance from the access
point, volume of network traffic, building materials and construction, operating system used, mix of
wireless products used, interference and other adverse conditions.
BELKIN, LINKSYS and many product names and logos are trademarks of the Belkin group of
companies. Third-party trademarks mentioned are the property of their respective owners. Licenses
and notices for third party software used in this product may be viewed here:
http://support.linksys.com/en-us/license. Please contact http://support.linksys.com/en-
us/gplcodecenter for questions or GPL source code requests.
© 2016 Belkin International, Inc. and/or its affiliates. All rights reserved.
LNKPG-00334 Rev. A00
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