CCNA Icnd110 s02l03
- 1. © 2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.0—2-1 Ethernet LANs Exploring the Packet Delivery Process
- 2. © 2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.0—2-2 Layer 2 Addressing Uses MAC address Assigned to end devices
- 3. © 2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.0—2-3 Layer 3 Addressing Each NOS has its own Layer 3 address format. OSI uses NSAP. TCP/IP uses IP.
- 4. © 2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.0—2-4 Host-to-Host Packet Delivery (1 of 10)
- 5. © 2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.0—2-5 Host-to-Host Packet Delivery (2 of 10)
- 6. © 2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.0—2-6 Host-to-Host Packet Delivery (3 of 10)
- 7. © 2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.0—2-7 Host-to-Host Packet Delivery (4 of 10)
- 8. © 2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.0—2-8 Host-to-Host Packet Delivery (5 of 10)
- 9. © 2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.0—2-9 Host-to-Host Packet Delivery (6 of 10)
- 10. © 2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.0—2-10 Host-to-Host Packet Delivery (7 of 10)
- 11. © 2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.0—2-11 Host-to-Host Packet Delivery (8 of 10)
- 12. © 2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.0—2-12 Host-to-Host Packet Delivery (9 of 10)
- 13. © 2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.0—2-13 Host-to-Host Packet Delivery (10 of 10)
- 14. © 2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.0—2-14 Summary Layer 2 addresses are MAC addresses. Layer 3 addresses are IP addresses. If the MAC address is not known, ARP is used to map Layer 2 to Layer 3. Switches learn the MAC addressing to port mapping by monitoring the source addresses of frames. When a switch forwards a frame, it does not change the source or destination Layer 2 address.
- 15. © 2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.0—2-15
Editor's Notes
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