Building Larger LANs: Bridges Extend reach of a single shared medium Connect two or more"segments"by copying data frames between them >)Only copy data when needed key difference from repeaters/hubs >)Reduce collision domain compared with single LAN >)Separate segments can send at once> much greater bandwidth Challenge: learning which packets to copy across links LAN 1 LAN 2 66 Building Larger LANs: Bridges Extend reach of a single shared medium Connect two or more “segments” by copying data frames between them » Only copy data when needed → key difference from repeaters/hubs » Reduce collision domain compared with single LAN » Separate segments can send at once → much greater bandwidth Challenge: learning which packets to copy across links 6 LAN 1 LAN 2