layer 3 layer 3 Switch/ Bridges / Hubs works at layer 2 as they utilizes MAC address to communicate. However i aggree above stated answer as there are some layer three switches that work at Layer3 i.e. Network Layer. Dhruv
Routers and layer 3 switches work at Layer 3 of OSI model.
Routers operate in layer 3 because they must use the logical network address to determine which network to route the packet to. Logical addressing is a feature of layer 3, therefore a router is a layer 3 device.
It is work at Network layer.
On a packet switched network, data travels between layers 1, 2 and 3 of the OSI model using routers (layer 3), switches (layer 2), and media (layer 1).
Layer 1 - the physical layer
All layers - but to the greatest extent, the distinctive work done by the router - specifically, routing packets - corresponds to layer 3.
Application Layer
Layer 2 , Data Link Layer
Switches / Bridges and hubs work at data link layer, but there are layer three switches which operate at network layer. Dhruv
Network layer or layer 3
2