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Troubleshooting Tips
SURFboard® SBG6700-AC Wireless Cable Modem Gateway
User Guide
50
365-095-25781 x.1
Troubleshooting Tips
If the solutions listed in this section do not solve your problem, contact your service provider for
assistance.
Your service provider may ask for the status of the LEDs as described in
Front Panel LED Icons and Error
Conditions
.
You may have to reset the SBG6700-AC gateway configuration to its original factory settings if the
gateway is not functioning properly.
Solutions
Table 5: Troubleshooting Solutions
Gateway Problem
Possible Solution
POWER LED Icon is OFF
Check the power connection on the gateway and to the
electrical outlet.
Check that the electrical outlet is working. Is the outlet
controlled by a light switch?
If so, disconnect the gateway power cord and connect it to
another electrical outlet that is not controlled by a light switch.
Cannot Send or
Receive Data
Check each end of the coaxial cable connection on the gateway
and cable outlet. Hand tighten each connector, if necessary.
Check the Ethernet cable to make sure it is properly connected
to the gateway and computer.
On the front panel, check the status of the LED icons and refer
to
Front Panel LED Icons and Error Conditions
to identify the
problem.
If you have cable television service, check your television to
ensure your cable service is operating properly.
If none of the above solutions resolves the problem, contact
your service provider or call ARRIS Technical Support at
1-877-466-8646
for assistance.
Cannot Access the
Internet
Check that all cable and power connections on your gateway
and computer are properly connected.
Check that the Power, Online, and Wireless LED icons on the
front panel are lit up solid.
Contact your service provider for assistance.
A
Page 62 / 86
Troubleshooting Tips
SURFboard® SBG6700-AC Wireless Cable Modem Gateway
User Guide
51
365-095-25781 x.1
Gateway Problem
Possible Solution
Wireless devices cannot
send or receive data
If the problem still persists after checking the coaxial cable and
Ethernet connections and your IP address, check the
Wireless
Security Mode
setting on the Wireless Primary Network screen.
If you enabled
WPA
and configured a passphrase on the gateway, be
sure each affected wireless client has the identical passphrase. If this
does not solve the problem, check if the wireless client supports WPA.
If you enabled
WEP
and configured a key on the gateway, be sure
each affected wireless client has the identical WEP key. If this does not
solve the problem, check whether the client’s wireless adapter
supports the type of WEP key configured on the gateway.
Front Panel LED Icons and Error Conditions
The SBG6700-AC front panel LED icons provide status information for the following error conditions:
Table 6: Front Panel LED Icons and Error Conditions
Led Icon
Status
If, During Startup:
If, During Normal
Operation
OFF
Gateway is not properly plugged
into the electrical outlet
Gateway is unplugged
BLINKING
Downstream receive channel
cannot be acquired
Downstream channel is
lost
BLINKING
Upstream send channel cannot
be acquired
Upstream channel is lost
BLINKING
IP registration is unsuccessful
IP registration is lost
OFF
Led is disabled
Led is disabled
OFF
Led is disabled
Led is disabled
Page 63 / 86
Gateway Configuration Screen Definitions
SURFboard® SBG6700-AC Wireless Cable Modem Gateway
User Guide
52
365-095-25781 x.1
Gateway Configuration
Screen Definitions
This section provides detailed field definitions for the following ARRIS SBG6700-AC network
configuration screens:
Basic
Advanced
Firewall
Basic Screens
Setup
You can use the SBG6700-AC Basic Setup screen to configure basic SBG6700-AC IP-related configuration
data, including your local network configuration, and WAN connection type.
Figure 45 – Basic Setup Screen
B
Page 64 / 86
Gateway Configuration Screen Definitions
SURFboard® SBG6700-AC Wireless Cable Modem Gateway
User Guide
53
365-095-25781 x.1
Table 7: Basic Setup Screen-Field Descriptions
Field
Description
Gateway Mode
Sets the device mode:
Routed
: Allows the internal network devices to use IP addresses from
the WAN subnet.
Bridged
: Disables the network address and port translation settings on
the gateway.
Primary Network
Only Mode
Sets the device mode for the primary network only:
Routed
: Allows the internal network devices to use IP addresses from
the WAN subnet.
Bridged
: Disables the network address and port translation settings on
the gateway.
LAN
IP Address
MAC Address
The IP address of the SBG6700-AC on your home network (LAN).
Media Access Control address is set of 12 hexadecimal digits that are
assigned during manufacturing to uniquely identify the hardware
address of the SBG6700-AC access point.
WAN
IP Address
The public WAN IP address of your SBG6700-AC, which is either
dynamically or statically assigned by the cable operator
MAC Address
Media Access Control address — a set of 12 hexadecimal digits assigned
during manufacturing that uniquely identifies the hardware address of
the SBG6700-AC access point.
Duration
Describes how long before your Internet connection expires, The WAN
lease will automatically renew itself when it expires.
Expires
Displays the exact time and date the WAN lease expires
IPv4 DNS Servers
Displays the IP address of the server that converts web site names into
Internet addresses. The IP address is assigned by the cable company.
Release WAN Lease
Click to release the WAN lease
Renew WAN Lease
Click to renew the WAN lease
DHCP
You can use the Basic DHCP (Dynamic Host Configuration Protocol) screen to configure the IP settings
of your SBG6700-AC gateway and the DHCP server on your home network. You can also view the status
of the optional internal SBG6700-AC DHCP server.
WARNING!
Do not modify these setting unless you are an experienced network
administrator with a strong understanding of IP addressing, sub-netting, and DHCP.
Page 65 / 86
Gateway Configuration Screen Definitions
SURFboard® SBG6700-AC Wireless Cable Modem Gateway
User Guide
54
365-095-25781 x.1
Figure 46 – Basic DHCP Screen
Table 8: Basic DHCP Screen-Field Descriptions
Field
Description
LAN Network Configuration
LAN IP Address
The IP address of the SBG6700-AC on your home network (LAN).
Enable DHCP Server
Checkmark
Enabled
to enable the SBG6700-AC DHCP Server.
Uncheck
Enabled
to disable the SBG6700-AC DHCP Server.
Starting Local Address
Enter the starting IP address to be assigned by the SBG6700-AC
DHCP server to clients in dotted-decimal format.
Default is
192.168.0.2
.
Max Number of Network
Devices
Sets the maximum number of clients for the SBG6700-AC DHCP
server to assign a private IP address.
Lease Time
Sets the time in seconds that the SBG6700-AC DHCP server leases
an IP address to a client. The default is 3600 seconds (60
minutes).
Reserve IP Address
Lists clients in which the DHCP server reserves a specific IP
address on the home network (LAN)
Client List
Lists the DHCP client device information.

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