1. Basics
2. OSI Layers
3. TCP/IP Protocols
   1. ICMP
      1. Protocol 1
      2. Types
         1. 0 Echo Reply
         2. 3 Destination Unreachable
         3. 4 Source Quench
         4. 5 Redirect
         5. 8 Echo Request
         6. 11 TTL Expired
   2. TCP
      1. Protocol 6
   3. UDP
      1. Protocol 17
4. Switching
   1. VTP
      1. Modes
         1. Server
            1. DEFAULT!
         2. Client
         3. Transparent
            1. All VLANS are local
      2. Layer 2 Frames
      3. Domains
         1. Revision Number
            1. To re-Set to 0
            2. Change Domain Name
            3. Change Switch Mode
         2. VLANS in domain
         3. Paramaters
            1. Mode
            2. Version 2
            3. Version 2
            4. Pruning
   2. VLANS
   3. Spanning Tree
      1. BPDU
         1. Notication Frames
            1. Note Generated by spanning-tree portfast
         2. Config Frames
         3. Set with Source Mac & root bridge MAC
      2. Security
         1. Root Gurad
            1. Stops new root Bridge BPDUs, allows switches to connect
         2. BPDU Guard
            1. Rejects ANY BPDU
         3. Loop Gurad
            1. Stops Loops forming if no BPDU recieved
         4. UDLC
            1. UNI-Directional Loop Detection
            2. used to detect if tx or rx breaks
            3. Normal Mode = Log
            4. Aggressive Mode = Err_Disable Port
         5. BPDU Filter
            1. Filters Outbound BPDU
   4. Trunking
5. Routing Protocols
   1. RIP
      1. Distance Vector
      2. UDP 520
      3. Admin Distance 120
      4. Load Balance upto 16 paths
      5. Version 1
         1. Broadcast Updates
         2. Classfull
         3. No Authentication
      6. Version 2
         1. Classless, VLSM = ok!
         2. Auto Summary on Class
         3. MULTICAST - 224.0.0.8
         4. Authentication
   2. EIGRP
      1. Admin Distance 90
   3. IGRP
      1. Admin Distance 100
   4. OSPF
      1. Admin Distance 110
   5. BGP
6. IP Multicast