Data-Centric Network (Unit 4)

Layer 2 Networking

STP - Purpose

• Redundancy in layer 2 switches
• Loop intervention
  
  
  
• Better than redundant switch links
  

STP - Loop free

1. Elect root bridge
   
2. Elect root ports

   

   
   
3. Elected designated ports

   

   
   
4. Elect alternate ports

   

Ethernet Standards

• MSTI
• IEEE 802.3ba
  
• 40GB Ethernet VS 100GB Ethernet
  
  
  
• EVB
• TOR
• EOR
• VEB
  
  
  
• VEPA
  
• TRILL
• FCOE VS FCIP