Netgear Cm400 High Speed Cable Modem Docsis 3 0 User Manual
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![Page 14
Manage and Monitor 14
CM400 High Speed Cable Modem
The user name is
admin. The default password is password . The user name and
password are case-sensitive.
The BASIC Home screen displays.
4. Select Cable Connection.
The Cable Connection screen displays.
The Startup Procedure section displays the initialization progress.
The Downstream Bonded Channels section displays the status of each chann\
el.
5. T
o see the Upstream Bonded Channels section and system time, scroll down.\
View Cable Modem...](http://img.usermanuals.tech/thumb/55/59050/w64_cm400-high-speed-cable-modem-docsis-3-0-user-manual-13.png "Page 14
Manage and Monitor 14
CM400 High Speed Cable Modem
The user name is
admin. The default password is password . The user name and
password are case-sensitive.
The BASIC Home screen displays.
4. Select Cable Connection.
The Cable Connection screen displays.
The Startup Procedure section displays the initialization progress.
The Downstream Bonded Channels section displays the status of each chann\
el.
5. T
o see the Upstream Bonded Channels section and system time, scroll down.\
View Cable Modem...")
![Page 17
Manage and Monitor 17
CM400 High Speed Cable Modem
5.
Type the old password.
6. T
ype the new password in the Set Password field.
7. T
ype the new password in the Repeat New Password field.
8. Click the Apply button.
Your change takes effect.
Reboot the Cable Modem
Rebooting the cable modem disconnects all computers from the cable modem\
’s local area
network (LAN). After the cable modem is finished booting and reestablishes a connection\
with the cable provider’s network, the devices...](http://img.usermanuals.tech/thumb/55/59050/w64_cm400-high-speed-cable-modem-docsis-3-0-user-manual-16.png "Page 17
Manage and Monitor 17
CM400 High Speed Cable Modem
5.
Type the old password.
6. T
ype the new password in the Set Password field.
7. T
ype the new password in the Repeat New Password field.
8. Click the Apply button.
Your change takes effect.
Reboot the Cable Modem
Rebooting the cable modem disconnects all computers from the cable modem\
’s local area
network (LAN). After the cable modem is finished booting and reestablishes a connection\
with the cable provider’s network, the devices...")
![Page 18
Manage and Monitor 18
CM400 High Speed Cable Modem
5.
In the Cable Information pane, click the Reboot button.
A confirmation message displays.
6. Click the OK button.
The cable modem reboots.
Reset the Cable Modem to Factory Default Settings
To reset the cable modem to factory default settings, you can use either \
the Reset button on the back panel of the cable modem or the Factory Reset software button. However, if you
changed the default password to access the cable modem and lost the pass\...](http://img.usermanuals.tech/thumb/55/59050/w64_cm400-high-speed-cable-modem-docsis-3-0-user-manual-17.png "Page 18
Manage and Monitor 18
CM400 High Speed Cable Modem
5.
In the Cable Information pane, click the Reboot button.
A confirmation message displays.
6. Click the OK button.
The cable modem reboots.
Reset the Cable Modem to Factory Default Settings
To reset the cable modem to factory default settings, you can use either \
the Reset button on the back panel of the cable modem or the Factory Reset software button. However, if you
changed the default password to access the cable modem and lost the pass\...")
![Page 19
Manage and Monitor 19
CM400 High Speed Cable Modem
3.
Release the Reset button.
The configuration is reset to factory default settings. When the reset i\
s complete, the cable modem reboots.
This process takes about one minute.
WARNING:
To avoid the risk of corrupting the firmware, do not interrupt the
reset. For example, if you are connected to the web management
interface, do not close the browser, click a link, or load a new page.
Do not turn off the cable modem.
Use the Factory Reset...](http://img.usermanuals.tech/thumb/55/59050/w64_cm400-high-speed-cable-modem-docsis-3-0-user-manual-18.png "Page 19
Manage and Monitor 19
CM400 High Speed Cable Modem
3.
Release the Reset button.
The configuration is reset to factory default settings. When the reset i\
s complete, the cable modem reboots.
This process takes about one minute.
WARNING:
To avoid the risk of corrupting the firmware, do not interrupt the
reset. For example, if you are connected to the web management
interface, do not close the browser, click a link, or load a new page.
Do not turn off the cable modem.
Use the Factory Reset...")
![Page 22
Troubleshooting 22
CM400 High Speed Cable Modem
Use LEDs to Troubleshoot
The following table provides help when you are using the LEDs for troubl\
eshooting.
Table 2. Troubleshooting with LEDs
LED BehaviorAction
All LEDs are off when the cable modem is plugged in. Make sure that the power cord is properly connected to your cable modem \
and
that the power supply adapter is properly connected to a functioning pow\
er
outlet.
Check that you are using the 12 VDC power adapter from NETGEAR for this \...](http://img.usermanuals.tech/thumb/55/59050/w64_cm400-high-speed-cable-modem-docsis-3-0-user-manual-21.png "Page 22
Troubleshooting 22
CM400 High Speed Cable Modem
Use LEDs to Troubleshoot
The following table provides help when you are using the LEDs for troubl\
eshooting.
Table 2. Troubleshooting with LEDs
LED BehaviorAction
All LEDs are off when the cable modem is plugged in. Make sure that the power cord is properly connected to your cable modem \
and
that the power supply adapter is properly connected to a functioning pow\
er
outlet.
Check that you are using the 12 VDC power adapter from NETGEAR for this \...")
![Page 24
24
A
A. Technical Specifications
The following table lists the technical specifications for the cable mod\
em.
Table 3. Technical specifications
FeatureSpecification
Power adapter • Input: 1
10–120V, 47–60 Hz
• Output: 12 VDC, 1A
Physical specifications • Dimensions: 5.8 x 3.8 x 1.8 in. (147 x 96 x 30 mm)
• W
eight: 0.44 lb (0.19 kg)
Environmental • Operating temperature: 32° to 104°F (0° to 40°C)
• Operating humidity: 90% maximum relative humidity
, noncondensing
Interface • Local: 10/100/1000...](http://img.usermanuals.tech/thumb/55/59050/w64_cm400-high-speed-cable-modem-docsis-3-0-user-manual-23.png "Page 24
24
A
A. Technical Specifications
The following table lists the technical specifications for the cable mod\
em.
Table 3. Technical specifications
FeatureSpecification
Power adapter • Input: 1
10–120V, 47–60 Hz
• Output: 12 VDC, 1A
Physical specifications • Dimensions: 5.8 x 3.8 x 1.8 in. (147 x 96 x 30 mm)
• W
eight: 0.44 lb (0.19 kg)
Environmental • Operating temperature: 32° to 104°F (0° to 40°C)
• Operating humidity: 90% maximum relative humidity
, noncondensing
Interface • Local: 10/100/1000...")
21 3 3. Troubleshooting This chapter provides information about troubleshooting your cable modem. The chapter includes the following sections: •Use LEDs to Troubleshoot •Cannot Log In to the Cable Modem •Troubleshoot the Cable Internet Connection Note:NETGEAR provides helpful articles and documentation at support.netgear.com.
Troubleshooting 22 CM400 High Speed Cable Modem Use LEDs to Troubleshoot The following table provides help when you are using the LEDs for troubl\ eshooting. Table 2. Troubleshooting with LEDs LED BehaviorAction All LEDs are off when the cable modem is plugged in. Make sure that the power cord is properly connected to your cable modem \ and that the power supply adapter is properly connected to a functioning pow\ er outlet. Check that you are using the 12 VDC power adapter from NETGEAR for this \ product. If the error persists, a hardware problem occurred. Contact technical su\ pport. All LEDs stay on. • Clear the configuration of the cable modem to its factory defaults. This operation sets the IP address of the cable modem to 192.168.100.1. • If the error persists, a hardware problem occurred. Contact technical support. Ethernet LED is off for a port with an Ethernet connection. • Make sure that the Ethernet cable connections are secure at the cable modem and at the computer , router, or WiFi router. • Make sure that power is turned on to the connected hub or computer . • Be sure that you are using the correct cable. Internet LED is off and the cable modem is connected to the cable wall jack. • Make sure that the coaxial cable connections are secure at the cable modem and at the wall jack. • Make sure that your cable Internet provider provisioned your cable Inter\ net service. Your provider can verify that the signal quality is good enough for cable modem service. • Remove any excessive splitters that you installed on your cable line. Ru\ n a “home run” back to the point where the cable enters your home. Cannot Log In to the Cable Modem If you cannot access the cable modem from computer that is connected to \ the cable modem or to a router that is connected the cable modem, check the following: • If your computer is connected to the cable modem with an Ethernet cable,\ check the connection. • Make sure that your computer ’s IP address is on the same subnet as the cable modem.The IP address of your computer must be in the range of 192.168.10\ 0.2 to 192.168.100.254. • Make sure Java, JavaScript, or ActiveX is enabled in your browser. If you are using Internet Explorer, click the Refresh button to make sure that the Java applet is loaded. • T ry quitting the browser and launching it again. • Make sure that you are using the correct login information. The cable modem user name admin is lowercase (Caps Lock is off). The default password is password.
Troubleshooting 23 CM400 High Speed Cable Modem If the cable modem does not save changes you made, do the following: • When entering configuration settings, be sure to click the Apply button before moving to another screen, or your changes are lost. • Click the Refresh or Reload button in the web browser . The changes occurred, but the web browser might be caching the old configuration. Troubleshoot the Cable Internet Connection If your cable modem cannot access the Internet but the Internet LED lights green, register the cable MAC address or device MAC address of your cable modem\ with your cable Internet provider (see Contact Your Cable Internet Provider and Activate Your Internet Service on page 9).
24 A A. Technical Specifications The following table lists the technical specifications for the cable mod\ em. Table 3. Technical specifications FeatureSpecification Power adapter • Input: 1 10–120V, 47–60 Hz • Output: 12 VDC, 1A Physical specifications • Dimensions: 5.8 x 3.8 x 1.8 in. (147 x 96 x 30 mm) • W eight: 0.44 lb (0.19 kg) Environmental • Operating temperature: 32° to 104°F (0° to 40°C) • Operating humidity: 90% maximum relative humidity , noncondensing Interface • Local: 10/100/1000 RJ-45 Gigabit Ethernet port • Internet: Coaxial cable connector DOCSIS 3.0: Backward compatible with DOCSIS 2.0 Memory • 128 MB Flash • 128 MB RAM Certifications CableLabs certified for U.S. cable Internet services