Troubleshooting networks – wired.

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Instructor, PACE-IT Program – Edmonds Community College

Areas of Expertise Industry Certifications

PC Hardware

Network Administration

IT Project Management

Network Design

User Training

IT Troubleshooting

Qualifications Summary

Education

M.B.A., IT Management, Western Governor’s University

B.S., IT Security, Western Governor’s University

Entrepreneur, executive leader, and proven manger with 10+ years of experience turning complex issues into efficient and effective solutions.

Strengths include developing and mentoring diverse workforces, improving processes, analyzing business needs and creating the solutions required— with a focus on technology.

Brian K. Ferrill, M.B.A.

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Troubleshooting networks – wired. PACE-IT.

– Common symptoms.

– Common tools.

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Common symptoms.Troubleshooting networks – wired.

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Common symptoms.Troubleshooting networks – wired.

No connectivity.The most likely cause is the network interface.

Check link lights, cables, and connections.

APIPA address.The most likely cause is incorrect DHCP settings.

If the address begins with 169.254.XXX.XXX, check the property settings for IPv4.

Limited connectivity.The most likely cause is the device or the router.

If you can’t connect to a local device, check the device. If you can’t connect to other networks, check the router.

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Common symptoms.Troubleshooting networks – wired.

Local connectivity only.The most likely cause is the default gateway.

A default gateway is required to reach other networks; the setting could be wrong or the router could be offline.

Intermittent connectivity.The cause is most likely one of three things.

This could be caused by a bad cable, a NIC that’s about to go down, or a bad port on the switch or router.

IP conflict.The most likely cause is a misconfigured address.

This doesn’t happen often using DHCP; however, it is more likely when using static addressing.

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Common tools.Troubleshooting networks – wired.

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Common tools.Troubleshooting networks – wired.

– Loop back plug.» Used to check the functionality of a NIC.» As the name implies, sends a signal out and then

right back in.

– Cable tools.» Cable tester: used to test the integrity of the

cable.» Toner probe: used to trace the path of the cable.» Punch down tools: used to place wires in a

punch down block.» Wire strippers: used to remove insulated jacket

from cables.» Crimper: used to secure cable into the proper

termination end.

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Common tools.Troubleshooting networks – wired.

– Software network utilities.» Ipconfig (Internet protocol configuration):

used to review IP configuration on a node.• C:\ipconfig /all

» Ping: uses ICMP echo requests to test for basic connectivity between two nodes.

• C:\ping 192.168.0.1» Tracert: uses ICMP echo requests to map the

path between two nodes on separate networks.• C:\tracert www.google.com

» Netstat (network statistics): used to identify which applications are using network connections.

• C:\netstat -a» Nbtstat: used to troubleshoot NetBIOS name

resolution issues .• C:\nbstat -A

» Net: commonly used to establish the path to a network share.

• C:\net use

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What was covered.Troubleshooting networks – wired.

Network troubleshooting can be tricky; many of the symptoms that are manifested can be difficult for the end user to nail down for you. Using a solid methodology will ease the process. Problems with NICs, cables, and settings can all interrupt the user’s ability to access the network.

Topic

Common symptoms.

Summary

Network tools can be broken out into two categories—software utilities and hardware tools. Software utilities include: Ipconfig, Ping, Tracert, Netstat, Nbtstat, and Net. Hardware tools include loopback plugs, cable testers, punch down tools, toner probes, wire strippers, and crimpers.

Common tools.

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THANK YOU!

This workforce solution was 100 percent funded by a $3 million grant awarded by the U.S. Department of Labor's Employment and Training Administration. The solution was created by the grantee and does not necessarily reflect the official position of the U.S. Department of Labor. The Department of Labor makes no guarantees, warranties, or assurances of any kind, express or implied, with respect to such information, including any information on linked sites and including, but not limited to, accuracy of the information or its completeness, timeliness, usefulness, adequacy, continued availability or ownership. Funded by the Department of Labor, Employment and Training Administration, Grant #TC-23745-12-60-A-53.

PACE-IT is an equal opportunity employer/program and auxiliary aids and services are available upon request to individuals with disabilities. For those that are hearing impaired, a video phone is available at the Services for Students with Disabilities (SSD) office in Mountlake Terrace Hall 159. Check www.edcc.edu/ssd for office hours. Call 425.354.3113 on a video phone for more information about the PACE-IT program. For any additional special accommodations needed, call the SSD office at 425.640.1814. Edmonds Community College does not discriminate on the basis of race; color; religion; national origin; sex; disability; sexual orientation; age; citizenship, marital, or veteran status; or genetic information in its programs and activities.