Network Analysis Using Wireshark Chapter 09 ethernet and lan switching
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This document provides a lesson on Ethernet and LAN switching using Wireshark, focusing on understanding the Ethernet frame structure and resolving Ethernet problems. Key topics include the details of Ethernet frames, errors to look for such as checksum errors, and other LAN-related issues. The lesson aims to equip participants with the knowledge to analyze network captures effectively.
Network Analysis Using Wireshark Chapter 09 ethernet and lan switching
- 1. Network Analysis Using Wireshark Version 2Network Analysis using Wireshark V.2 [email protected] Network analysis using Wireshark V2 [email protected] 1 Network analysis Using Wireshark Lesson 9: Ethernet and LAN Switching
- 2. Network Analysis Using Wireshark Version 2Network Analysis using Wireshark V.2 [email protected] Network analysis using Wireshark V2 [email protected] 2 • By the end of this lesson, the participant will be able to: ▫ Understand Ethernet frame structure ▫ Use Wireshark for resolving Ethernet problems Lesson Objectives
- 3. Network Analysis Using Wireshark Version 2Network Analysis using Wireshark V.2 [email protected] Network analysis using Wireshark V2 [email protected] 3 [email protected] For More lectures, Courses & Keynote Speaking Contact Me to:
- 4. Network Analysis Using Wireshark Version 2Network Analysis using Wireshark V.2 [email protected] Network analysis using Wireshark V2 [email protected] 4 Ethernet frame structure What problems to look for Chapter Content
- 5. Network Analysis Using Wireshark Version 2Network Analysis using Wireshark V.2 [email protected] Network analysis using Wireshark V2 [email protected] 5 The Ethernet Frame Destination MAC Source MAC Protocol Type 802.1q Data FCS 6 bytes 6 bytes 2 bytes 2 bytes 46–1,500 bytes 4 bytes Priority CFI VLAN ID Tag protocol identifier Tag control field Proprietary 2-byte number 16 bits 3 bits 1 bit 12 bits Protocol Type 2 bytes 802.1Q Tag Tag ID: 8100 for 802.1Q 8a88 for 802.1ad Priority: 8 levels, 0-7 CFI: Always set to “0” VLAN ID: 0 – No VLAN 1 – Native VLAN 2-4096 Std. VLANs
- 6. Network Analysis Using Wireshark Version 2Network Analysis using Wireshark V.2 [email protected] Network analysis using Wireshark V2 [email protected] 6 Frame Information Frame details
- 7. Network Analysis Using Wireshark Version 2Network Analysis using Wireshark V.2 [email protected] Network analysis using Wireshark V2 [email protected] 7 Ethernet Information Source Address Destination Address
- 8. Network Analysis Using Wireshark Version 2Network Analysis using Wireshark V.2 [email protected] Network analysis using Wireshark V2 [email protected] 8 Ethernet frame structure What problems to look for Chapter Content
- 9. Network Analysis Using Wireshark Version 2Network Analysis using Wireshark V.2 [email protected] Network analysis using Wireshark V2 [email protected] 9 Checksum Errors Bad checksum
- 10. Network Analysis Using Wireshark Version 2Network Analysis using Wireshark V.2 [email protected] Network analysis using Wireshark V2 [email protected] 10 Broadcasts 10Mbps ~10µS’s between packets
- 11. Network Analysis Using Wireshark Version 2Network Analysis using Wireshark V.2 [email protected] Network analysis using Wireshark V2 [email protected] 11 Summary • In this lesson we talked about: ▫ The Ethernet Protocol and what to look for in a capture fule ▫ LAN and Ethernet problems that might happen in your network Thanks for your time Yoram Orzach [email protected]
- 12. Network Analysis Using Wireshark Version 2Network Analysis using Wireshark V.2 [email protected] Network analysis using Wireshark V2 [email protected] 12 [email protected] For More lectures, Courses & Keynote Speaking Contact Me to: