Routers (Cont.)
Operations
- Strip off the header and trailer of the incoming L2 frame
- Examine the destination address of the network layer
- Build a new frame around the packet
- Choose the “best” route for a packet (via routing tables)
- Send it out onto another network segment
Compared to Bridges
- Perform more processing
- Process L3 messages (no changes made)
- Form new L2 messages for outgoing packets
- Processes only messages specifically addressed to it