arp

  • 0
  • 1
  • Question
  • Updated 2 years ago
  • Answered
  • (Edited)
Hi All

When machines send packets through L2 to L3, if the L3 forwards the same packet to a different VLAN, it drops the original MAC ID and in turn uses its own (replaces) interface MAC ID in the forward. 

can be configured to pass on MAC IDs
Photo of Mohammed Jasheer

Mohammed Jasheer

  • 916 Points 500 badge 2x thumb

Posted 2 years ago

  • 0
  • 1
Photo of Curtis Parish

Curtis Parish

  • 3,332 Points 3k badge 2x thumb
No,  L2 and L3 broadcast domains are different.  The MAC is only used within the L2 broadcast domain.   Once the packet has been forwarded to another L2 broadcast domain (VLAN) via L3 routing  the source MAC has to be replaced with the  MAC of the router  that forwarded it to the new L2 domain.  
(Edited)