There is a fundamental question: “how is bridging different from routing?”. It’s impossible to give a concise answer .
ROUTING-: Routing or routeing is the process of selecting paths in a network along which to send network traffic.
BRIDGING-: Bridging is a forwarding technique used in packet-switched computer networks. Unlike routing, bridging makes no assumptions about where in a network a particular address is located. Instead, it depends on flooding and examination of source addresses in received packet headers to locate unknown devices. Once a device has been located, its location is recorded in a table where the MAC address is stored so as to preclude the need for further broadcasting. The utility of bridging is limited by its dependence on flooding, and is thus only used in local area networks.
NOW THE DIFFERENCES BETWEEN THESE TWO--
ROUTING-: Routing or routeing is the process of selecting paths in a network along which to send network traffic.
BRIDGING-: Bridging is a forwarding technique used in packet-switched computer networks. Unlike routing, bridging makes no assumptions about where in a network a particular address is located. Instead, it depends on flooding and examination of source addresses in received packet headers to locate unknown devices. Once a device has been located, its location is recorded in a table where the MAC address is stored so as to preclude the need for further broadcasting. The utility of bridging is limited by its dependence on flooding, and is thus only used in local area networks.
NOW THE DIFFERENCES BETWEEN THESE TWO--
Design scope. IP was designed to support global packet switching network infrastructure. Ethernet bridging was designed to emulate a single shared cable. Various design decisions made in IP or Ethernet bridging were always skewed by these perspectives: scalability versus transparency.
Forwarding. IP routers forward
