Transcript Network Management LAB

Perform Network Fault Isolation Techniques
Terms
•
Host: The computer to be tested
•
Gateway: The router connected to that part of
the network
•
PDU: Protocol Data Unit
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Perform Network Fault Isolation Techniques
Commands
•
Ipconfig: Shows the IP address of the host
•
Ipconfig /all: Show additional information of the
host
– IP Addressing:
• Static - Assigned by the administrator
• Dynamic - Assigned by a DHCP Server
• Arp: Address Resolution Protocol, maps
IP Address to MAC Address
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Perform Network Fault Isolation Techniques
Commands
•
Ping: Used to test whether a particular host is
reachable across an IP network
– Ping 127.0.0.1: tests the NIC only (Local
Loop Back test)
– Ping (ip address of host): tests connection to
the switch (Loopback test)
– Ping (ip address of another host): tests
connection between two nodes
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Simulation
Mode
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Add PDU
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Event List
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Delete PDU
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172.16.0.0 Network
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172.16.0.0 Network
172.16.40.0
Sub-net
172.16.50.0
Sub-net
172.16.10.0
Sub-net
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172.16.0.0 Network
172.16.40.0
Sub-net
Static IP
172.16.50.0
Sub-net
Dynamic IP
172.16.10.0
Sub-net
Static IP
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172.16.0.0 Network
Routers (Gateways)
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172.16.0.0 Network
Switches
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Chart 1 - Packet Tracer Checkout and Troubleshooting
Step
1
2
3
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Action
Check IP
Address
Correct IP
Address
Procedure
Normal
If Indication is If Indication is
Indication
Abnormal
Normal
• Click on the computer to IP Address
Proceed to
Proceed to
be checked
matches the IP Step 2 after
Step 3
address shown closing
• Select ‘Desktop’
on the
command
• Select ‘Command Prompt’ configuration prompt screen
• At the command prompt Chart 3
type: ‘ipconfig’
• On desktop screen
Repeat Step
• Select ‘IP Config’
1
• Enter correct Static IP
Address or select DHCP as
required on configuration
chart 1 on the answer
sheet
Perform local • At the command prompt Good ping
loopback test
type: ‘ping 127.0.0.1’
Reinstall or
replace the
NIC, repeat
step 1
Proceed to
Step 4
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Chart 1 - Packet Tracer Checkout and Troubleshooting
Step
4
5
6
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Action
Normal
Indication
Perform
• At the command prompt Good Ping
loopback test
ping the IP address of the
host to be checked as
indicated in step 1
Check the NIC • Select ‘Config’ tab
Configuration
configuration
correct
• Select ‘Fast Ethernet’
button
Check switch
port
configuration
Procedure
• Verify configuration
against fig x.1 or x.2
• Select the switch to be
checked
If Indication is If Indication is
Abnormal
Normal
Proceed to
Proceed to
Step 5
Step 8
Make required
correction to
configuration
and repeat
step 4
Proceed to
Step 6 after
closing host
configuration
screen
Configuration Make required Proceed to
correct
correction to Step 7
configuration
• Select ‘Config’ tab
and repeat
• Select the port to be
Step 4 after
checked according to the
closing
configuration chart
configuration
screen
• Verify configuration
against fig x.3
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After reading
the scenario,
then close or
move the PT
Activity screen
to the side
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Clicking on a
computer will
bring up the
physical view
screen, then
select the
Desktop Tab
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On the desktop
screen select
Command
Prompt
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Step 1
To check the IP
configuration,
type ipconfig,
then hit enter.
Check
information
against Chart 1
in the handout
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Step 2 (if
required)
To correct the IP
configuration,
close the
command
prompt screen
and select IP
Configuration
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Step 3
If IP configuration
is correct, then
ping 127.0.0.1 to
test the NIC
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Step 4
Ping the IP
address of the
computer to
check connection
to the switch
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Step 5 (if
required)
Select the Config
tab and
FastEthernet tab
and compare the
setting with the
figures in the
handout
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Step 6 (if
required)
Select the switch
to be checked,
then select Config
tab and the port to
be checked. This
information is
found on the
Configuration
Chart in the
handout
Check against
trhe figure in the
handout
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Step 7
To remove a
cable select the
X, then select the
cable to be
removed
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Step 7
To install a cable
select the buttons
identified below
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Step 8
Ping the IP
address of the
gateway to
check
connection to
the router
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Network 172.16.0.0
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Subnet 172.16.40.0
Network 172.16.0.0
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Subnet 172.16.50.0
Network
Network172.16.0.0
172.16.0.0
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Network 172.16.0.0
Subnet 172.16.10.0
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Switches
Network 172.16.0.0
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Routers (Default Gateways)
Network 172.16.0.0
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Step
1
2
3
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Action
Procedure
Normal
Indication
If Indication is If Indication is
Normal
Abnormal
Check IP
 Double click on the
IP
Proceed to
Proceed to
Configuration
computer to be checked Configuration Step 3
Step 2
 At the command prompt matches
type “ipconfig”, the
Configuration
press enter
Chart 1
 Right click on the host
icon
 Select ‘Configs’
 Enter correct IP
information as shown
on RouterSim
Configuration chart.
Click OK, and Close.
Perform
 At the command prompt Good Ping
loopback test
ping the IP address of
the host to be checked
Correct IP
Address
Repeat Step 1
Proceed to
Step 4
Repeat Step 1
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Step
Action
Procedure
Normal
Indication
Good ping
If Indication is If Indication is
Normal
Abnormal
Test complete Proceed to
Step 5
4
Test
connectivity
to the
gateway
 From the host machine
command prompt
screen, ping the IP
address of the gateway
router
5
Check cables
6
Remove a
cable
 Visually check that the Cable properly Go to Step 1 To remove
cable in installed and
connected
and repeat the cable go to
connected to the correct
lab.
Step 6
location
To Install a
(Chart 5)
cable go to
step 7
 Right click the device,
Proceed to
then right click on the
Step 7 for
port of the cable to be
installation of
removed. Select ‘Yes’ at
a cable
the Remove pop-up
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Step
7
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Action
Procedure
Install a cable  Refer to Chart 5 for the
correct configuration.
Right click on the device
to be connected, then
right click on the port
cable is to be connected
to.
 Right click the device
and port for the
opposite end of the
cable.
Normal
Indication
If Indication is If Indication is
Normal
Abnormal
Repeat Step 4
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Ex: Fault; MTL-2 cannot access
the network
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Double left click on MTL-2 to enter
Console screen
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Using IPCONFIG to check IP Configuration
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Compare IP Configuration to the IP configuration chart
All hosts use static IP addresses
Host
IP Address
Subnet Mask
Gateway
Connected to
MTL-1
172.16.50.3
255.255.255.0
172.16.50.1
Connors Manor Port 8
MTL-2
172.16.50.5
255.255.255.0
172.16.50.1
Connors Manor Port 4
MTL-3
172.16.50.9
255.255.255.0
172.16.50.1
Connors Manor Port 5
Rm 102
172.16.10.5
255.255.255.0
172.16.10.1
Dolan hall Port 1
Rm 105
172.16.10.6
255.255.255.0
172.16.10.1
Dolan Hall Port 8
Rm 201
172.16.10.7
255.255.255.0
172.16.10.1
Wolfe Hall Port 2
Rm 210
172.16.10.8
255.255.255.0
172.16.10.1
Wolfe Hall Port 8
Help Desk
172.16.40.3
255.255.255.0
172.16.40.1
Network Support Port 1
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To correct IP configuration, Right click the
computer (MTL-2) to get Host screen, then
select Configs to enter configuration screen
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IP Configuration screen
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PING command to test local loopback
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Perform Network Fault Isolation
Network Flow Control
“Ping” command
–
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A failed “ping” command
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PING command to default gateway
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If ping to gateway is bad, then
ping another host on same
switch.
Good ping indicates faulty cable
between switch and router.
Bad ping indicates bad cable
between host and switch
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Right click on a switch to view
connections
To remove a connection, left
click on the port to be
disconnected
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Right click on router to see connections
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When done DO NOT save changes
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