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Page 51 / 74 Scroll up to view Page 46 - 50
Troubleshooting Tips
SURFboard® SBG6580 Wireless Cable Modem Gateway
•
User Guide
40
365-095-25397-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 gateway LEDs as described in
Front Panel LED Icons
and Error Conditions
.
You may have to reset the SBG6580 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 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 resolves the problem, contact your service
provider for further assistance or call ARRIS Technical Support for
assistance at
1-877-466-8646
.
Cannot Access the
Internet
•
Check that all cable and power connections 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 52 / 74
Troubleshooting Tips
SURFboard® SBG6580 Wireless Cable Modem Gateway
•
User Guide
41
365-095-25397-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 SBG6580 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
FLASHING
Downstream receive channel
cannot be acquired
Downstream channel is
lost
FLASHING
Upstream send channel cannot
be acquired
Upstream channel is lost
FLASHING
IP registration is unsuccessful
IP registration is lost
OFF
Led is disabled
Led is disabled
Page 53 / 74
Gateway Configuration Screen Definitions
SURFboard® SBG6580 Wireless Cable Modem Gateway
•
User Guide
42
365-095-25397-x.1
Gateway Configuration
Screen Definitions
This section provides detailed field definitions for the following ARRIS SBG6580 network configuration
screens:
•
Basic
•
Advanced
•
Firewall
Basic Screens
Basic Setup
You can use the SBG6580 Basic Setup screen to configure basic SBG6580 IP-related configuration data,
including your local network configuration, and WAN connection type.
Figure 38 – Basic Setup Screen
B
Page 54 / 74
Gateway Configuration Screen Definitions
SURFboard® SBG6580 Wireless Cable Modem Gateway
•
User Guide
43
365-095-25397-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.
NAPT
: Network Address Port Translation – this is the most common
form of network address translation (NAT) between public and private IP
addresses. NAPT maps one public IP address to multiple private IP
addresses. If NAPT is set on the Basic Setup screen, one public IP address
is mapped to an individual private IP address for up to 245 LAN clients.
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 SBG6580 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 SBG6580 access point.
WAN
IP Address
The public WAN IP address of your SBG6580, 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 SBG6580 access point.
WAN (continued)
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
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 SBG6580 gateway and the DHCP server on your home network. You can also view the status of
the optional internal SBG6580 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 55 / 74
Gateway Configuration Screen Definitions
SURFboard® SBG6580 Wireless Cable Modem Gateway
•
User Guide
44
365-095-25397-x.1
Figure 39 – Basic DHCP Screen
Table 8: Basic DHCP Screen-Field Descriptions
Field
Description
LAN Network Configuration
LAN IP Address
The IP address of the SBG6580 on your home network (LAN).
Enable DHCP Server
Checkmark
Enabled
to enable the SBG6580 DHCP Server.
Uncheck
Enabled
to disable the SBG6580 DHCP Server.
Starting Local Address
Enter the starting IP address to be assigned by the SBG6580
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 SBG6580 DHCP
server to assign a private IP address.
Lease Time
Sets the time in seconds that the SBG6580 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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