to Trouble shoot WAN ?
eradicate obstacles and monitor the WAN–based
application is an emerging business nowadays, large
numbers of products and solutions are available to fulfill
the requirements of the enterprises and small business.
As it is well described in the previous section that
WAN links are usually built-up through the leased lines,
circuit switching and packet switching methods and other
of the easiest way of troubleshooting every type of
network is done through the free utility which is built
in every TCP/IP stack. The first step in troubleshooting
is to use the “PING” command.
Go to command prompt and at the command prompt type
ping [IP address] where the IP address is the 32 bit
numeric address of the destination computer like 10.11.10.1.
you have followed the same steps as written above and
you get the reply from the remote computer this means
that physical connection between the two computers has
been made and if you get the error message of “Request
Time Out”, it shows that there is some problem
in the connection.
most common problems occur due to faulty network devices
such as LAN card, router,switch, misconfigured router,
misconfigured firewall, too many simultaneous connections,
server crash down, network congestions and inadequate
isolate the root cause of the WAN problems is very essential
and this can be achieved by using the right troubleshooting
tools and right troubleshooting techniques. The tools
can help us determine the nature of the root cause of
The technologies and products which are available for
troubleshooting and optimizing the WAN performance are
rapidly evolving. Before troubleshooting the problem
it is the best approach to divide the components of
are some basic tips that can help you in determining
and isolating the problems in your WAN network.
First of all assure that the network cards settings
are correct on each computer.
• After that check it out that the cables on the
routers are tightly plugged.
• After checking the cables turn off your router
for almost 30 seconds before starting again.
• The most important step is to ping the WAN IP
address of the remote router.
• After pinging the WAN IP address turn on all
the network devices such as switches and routers.
• Another most important thing is to apply the
techniques of local loop testing, framing, clocking,
signaling and signal encoding.
• Bandwidth allocation much be checked inorder
to see how much bandwidth is allocated to each remote
• By using WAN troubleshooting tool check if it
is a genuine WAN problem, network jamming due to the
distributed application or bandwidth problem.
• Find it out if someone is sending large amount
• Searched it out if there is a fault in the remote
routers/switches or centralized router/switches.
• Do confirm the correct configuration of firewall
software or firewall hardware.