IP Troubleshooting Duration: 3 days

IP Troubleshooting
CONTENT
This course contains the repetition required, and the practical and theoretical exercises needed, to provide the students with the skills for becoming a troubleshooter of generic IP networks.
Firstly, the course contains theory chapters to ensure that the students understand how the data link layer work together with the TCP/IP protocol suite, and the common used features that can cause problems in your network. This includes issues such as auto-sensing, VLANs, subnetting, as well as redundancy logic on both layer 2(spanning tree) and layer 3(routing).
The course will attempt to help students to learn a method for how to perform structured troubleshooting in any generic IP network, including higher layer functions such as TCP/UDP, DHCP and DNS.

TARGET AUDIENCE
This course is suitable for anyone who works with hosts and/or network equipment and that needs to be able to troubleshoot network problems quickly and efficiently, with a good understanding of the bigger picture of IP networks and their functions.

PREREQUISITES
The students need basic knowledge of TCP/IP and generic data communication, but repetition of these subjects will be included in the course.

EXCERCISES
This is a theoretical training with practical exercises.

NOTE: This course is not delivered with the FoldOut methodology.

Ethernet, Switching and VLAN
•        HUBs, Bridges and Switches
•        VLAN and 802.1Q
•        Layer 2 redundancy

Learning to use Wireshark
•        Basic traffic analysis
•        Understanding display filtering
•        Customizing Wireshark
•        Viewing Flows

Practical Exercises
•        Using Wireshark

Basic troubleshooting methodology
•        How to troubleshoot
•        Baselines and documentation
•        Reference models
•        Isolating the error

IP Fundamentals
•        Addressing and Subnetting
•        Error handling; ICMP, Ping, Traceroute
•        Network address translation
•        Basics IPv6

IP Routing and Forwarding
•        Using the routing table
•        Static and default routing
•        Dynamic routing protocols; RIP and OSPF

Theoretical Exercises
•        Subnetting
•        IP Routing

Practical Exercise
•        Switching and VLAN problems

Higher layers
•        TCP and UDP
•        Basics of Firewalls
•        Domain name resolution (DNS)
•        DHCP/BOOTP
•        SNMP
•        Overview of VoIP and QoS

Practical Exercises
•        Lab 2 – Addressing, Static IP Routing. Using ping and traceroute
•        Lab 3 – Routing, ACLs, Higher layers

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