Page 191 / 198 Scroll up to view Page 186 - 190
Diagnostics and Troubleshooting
191
AC1600 WiFi Cable Modem Router
Changes Are Not Saved
If the modem router does not save the changes that you make in the modem router web
management interface, do the following:
When entering configuration settings, always click the
Apply
button before moving to
another page or tab, or your changes are lost.
Click the
Refresh
or
Reload
button in the web browser. The changes occurred, but the
old settings might be in the web browser’s cache.
Troubleshoot the WiFi Connectivity
If you are experiencing trouble connecting over WiFi to the modem router, try to isolate the
problem:
Make sure that the WiFi settings in your WiFi device and modem router match exactly.
For a device that is connected over WiFi, the WiFi network name (SSID) and WiFi
security settings of the modem router and WiFi computer must match exactly. The default
SSID and password are on the product label (see
Product Label
on page
23).
Does the WiFi device that you are using find your WiFi network?
If a WiFi LED stays off, the associated WiFi radio in the modem router is off. For
information about turning on the WiFi radio, see
Control the WiFi Radios
on page
155.
If you turn on the 2.4 GHz WiFi radio, the 2.4 GHz WiFi LED
lights green.
If you turn on the 5 GHz WiFi radio, the 5 GHz WiFi LED
lights green.
If you disabled the modem router’s SSID broadcast, your WiFi network is hidden and
does not display in your WiFi client’s scanning list. (By default, SSID broadcast is
enabled.) For more information, see
Manage the Basic WiFi Settings and WiFi Security of
the Main Network
on page
36.
Does your WiFi device support the security that you are using for your WiFi network
(WEP, WPA, or WPA2)? For information about changing the WiFi security, see
Manage
the Basic WiFi Settings and WiFi Security of the Main Network
on page
36.
Tip:
If you want to change the WiFi settings of the modem router’s main
network, use a wired connection to avoid being disconnected when
the new WiFi settings take effect.
If your WiFi device finds your network but the signal strength is weak, check these conditions:
Is your modem router too far from your WiFi device or too close? Place your WiFi device
near the modem router but at least 6 feet (1.8 meters) away and see whether the signal
strength improves.
Are objects between the modem router and your WiFi device blocking the WiFi signal?
Page 192 / 198
Diagnostics and Troubleshooting
192
AC1600 WiFi Cable Modem Router
TCP/IP Network Not Responding
Most TCP/IP terminal devices and routers provide a ping utility for sending an echo request
packet to the designated device. The device responds with an echo reply to tell whether a
TCP/IP network is responding to requests.
Test the LAN Path to Your Modem Router
You can ping the modem router from your computer to verify that the LAN path to your
modem router is set up correctly.
To ping the modem router from a Windows computer:
1.
From the Windows taskbar, click the
Start
button and select
Run
.
2.
In the field provided, type
ping
followed by the IP address of the modem router, as in this
example:
3.
Click the
OK
button.
A message such as the following one displays:
Pinging <IP address> with 32 bytes of data
If the path is working, you see this message:
Reply from < IP address >: bytes=32 time=NN ms TTL=xxx
If the path is not working, you see this message:
Request timed out
If the path is not functioning correctly, the network might not be configured correctly. Do
the following:
Verify that the Ethernet card driver software and TCP/IP software are both installed
and configured on your computer or workstation.
Verify that the IP address for your modem router and your computer are correct and
that the addresses are on the same subnet.
Test the Path from Your Computer to a Remote Device
After you verify that the LAN path works correctly, test the path from your computer to a
remote device:
1.
From the Windows toolbar, click the
Start
button and select
Run
.
2.
In the field provided, type
ping -n 10
IP address
where
IP address
is the IP address of a remote device such as your cable service
provider’s DNS server.
Page 193 / 198
Diagnostics and Troubleshooting
193
AC1600 WiFi Cable Modem Router
If the path is functioning correctly, replies as described in
Test the LAN Path to Your Modem
Router
on page
192 display. If you do not receive replies, do the following:
Check to see that your computer uses the IP address of your modem router as the default
modem router. If the IP configuration of your computer is assigned by DHCP, this
information is not visible in your computer’s Network Control Panel. Verify that the IP
address of the modem router is listed as the default router.
Check to see that the network address of your computer (the portion of the IP address
specified by the netmask) is different from the network address of the remote device.
If the modem router cannot obtain an IP address from the cable service provider, the
cable service provider might check for a host name, a domain name, or both. Assign the
host name, domain name, or both. For more information, see
View or Manually Set Up
the IPv4 Internet Settings
on page
30.
Page 194 / 198
194
A
A.
Factory Default Settings and
Specifications
This appendix includes the factory default settings and technical specifications for the modem
router.
This appendix contains the following sections:
Factory Default Settings
Technical and Environmental Specifications
Page 195 / 198
Factory Default Settings and Specifications
195
AC1600 WiFi Cable Modem Router
Factory Default Settings
You can return the modem router to its factory default settings (see
Return the Modem
Router to Its Factory Default Settings
on page
113). The following table shows the factory
default settings.
Table 6.
Factory default settings
Feature
Default Settings
Router login
User login URL
User name (case-sensitive)
admin
Login password (case-sensitive)
password
Local area network
(LAN)
LAN IP address
192.168.0.1
Subnet mask
255.255.255.0
DHCP server
Enabled
DHCP range
192.168.0.10 to 192.168.0.254
DHCP start IP address
192.168.0.11
DHCP end IP address
192.168.0.254
Reserved IP address for
ReadySHARE
192.168.0.10
UPnP
Enabled
Wide area network
(WAN) and security
Port scan and DoS protection
Disabled
Default DMZ server
Disabled
Respond to ping on Internet port
Disabled
MTU size
Uses the maximum MTU value for best throughput
SIP ALG
Enabled
Remote management over WAN
Disabled
Inbound communication from the
Internet
Disabled, except for traffic on port 80 (the HTTP port)
in response to requests from the LAN
Outbound communication to the
Internet
Enabled
Network address translation
Enabled (nonconfigurable)
Stateful packet inspection
Enabled (nonconfigurable)
Sites blocked
None
Services blocked
None

Rate

4.7 / 5 based on 3 votes.

Bookmark Our Site

Press Ctrl + D to add this site to your favorites!

Share
Top