Next hop router

[Sulaiman Ejaz]

what is next hop router? "The router which will be one router hop closer to the destination, is next-hop router" please explain this

[cadet alain]

Hi,

This the Layer 3 device that your router is going to forward routed packets to for non directly connected networks.

Regards

Alain

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[chandra_rc16]

Hi Ejaz,

The next hop router, is nothing but telling the device what/where is the next step..

For ex:

R1(Fa0/1)----(Fa0/1)R2(Fa0/2)----(Fa0/1)R3(Fa0/2)-----(Fa0/2)R4

Inorder to tell the R1 to reach R3...  you'll configure ono R1 that the next hop router is R2 and the interface is Fa0/1.

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Regards,

Chandu

[Rolf Fischer]

Just an addition to what Alain and Chandu already stated:

Remember that a basic operation of routers when forwarding packets on multiaccess-interfaces is the layer-2 encapsulation for the associated layer-2 segment next in the path. So a router has to know the next-hop in order to resolve its layer-2 address, which then will be used as the destination address for the layer-2 frames send to the next-hop. When the next-hop router receives the frame, the layer-2 header will be removed and the encapsulation process starts again for the next segment in the path.

HTH

Rolf