Ping
-• Ping is used to test if a destination host is
reachable.
Nestat
• Netstat is
an important network utility that can be
used to verify active TCP
connections.
• Netstat
lists the protocol in use, the local address
and port
number, the foreign address and port
number, and
the state of the connection
Ipconfig
• Ipconfig is
used to display the
current IP
configuration
information for a host.
• Display the
basic configuration information
including: IP
address, subnet mask and default
gateway.
Tracert
• Tracert
utility provides connectivity information
about the
path a packet takes to reach the
destination
and about every router (hop) along the
way.
• Tracert can
help identify where a packet may have been
lost or delayed due to bottlenecks or
slowdowns in
the network.
Nslookup
• nslookup
utility allows an end-user to look up
information
about a particular DNS
name in the DNS
server
EXTRA FOR NETWORK TROUBLESHOOTING TOOL
PuTTy/Tera Term
When connecting to a
variety of different types of equipment, a telnet, SSH or serial client is
required; when this is required both the puTTY and Tera Term programs are able
to provide thesefunctionalities.
-Subnet and IP
Calculator
One of the most important
tools in the belt of a junior network engineer is an IP network calculator.
These can be used to unsure a correct IP address selection and with this a
correct IP address configuration. While this type of tool is used by senior
level network engineers, much of the information obtained from the tool becomes
simpler to calculate the longer and more experience you have in the
field.
-Pathping/mtr
In an effort to
take advantage of the benefits of both the ping and tracert/traceroute
commands, the pathping and mtr utilities were developed. Both of these tools
take the functionality and information that can be obtained from these types of
tools and provide a more detailed single picture of the path characteristics
from a specific host to a specific destination.
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