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Chapter 4
Advanced Configuration
29
10/100 8-Port VPN Router
no more than 64 alphanumeric characters long must be
entered.
Send SNMP Trap to
Enter the IP address or domain name
that should receive the traps sent by the Router.
Click
Save Settings
to save your changes, or click
Cancel
Changes
to undo them.
System Management > Diagnostic
The Router has two built-in tools, DNS Name Lookup
and Ping, which are used for troubleshooting network
problems.
The Internet has a service called the Domain Name Service
(DNS), which allows users to enter an easily remembered
host name, such as www.linksys.com, instead of numerical
TCP/IP addresses to access Internet resources. The DNS
Name Lookup tool will return the numerical TCP/IP address
of a host name.
The ping test bounces a packet off a machine on the
Internet back to the sender. This test shows if the Router
is able to contact the remote host. If users on the LAN
are having problems accessing services on the Internet,
try pinging the DNS server or other machine at the ISP’s
location. If this test is successful, try pinging devices
outside the ISP. This will show if the problem lies with the
ISP’s connection.
Diagnostic
DNS Name Lookup/Ping
Select which tool you want
to use,
DNS Name Lookup
or
Ping
. Then proceed to the
appropriate instructions.
DNS Name Lookup
Before using this tool, make sure the IP address of the DNS
server is entered on the
Setup > Network
screen; otherwise,
this tool will not work.
System Management > Diagnostic > DNS Name Lookup
Look up the name
Enter the host name, and click
Go
.
(Do not add the prefix http:// or else you will get an error
message.) The Router will then query the DNS server and
display the results.
Name
The host name is displayed.
Address
The URL of the host is displayed.
Ping
Before using this tool make sure you know the device or
host’s IP address. If you do not know it, use the Router’s
DNS Name Lookup tool to find the IP address.
System Management > Diagnostic > Ping
Ping host or IP address
Enter the IP address of the device
being pinged, and click
Go
. The test will take a few seconds
to complete. Then the Router will display the results.
Status
The status of the ping test is displayed.
Packets
The number of packets transmitted, number
of packets received, and percentage of packets lost are
displayed.
Round Trip Time
The minimum, maximum, and average
round trip times are displayed.
System Management > Factory Default
Use this screen to clear all of your configuration information
and restore the Router to its factory default settings. Only
use this feature if you wish to discard all the settings and
preferences that you have configured.
System Management > Factory Default