Next-Hop Options

In this article we will discuss Next-Hop Options, will make brief discussion on Next-Hop Options, In last article we discuss about IP route Command.

None of the routers have any knowledge of any networks beyond their directly connected interfaces.

For example, R1 has no knowledge of networks:

  • 172.16.1.0/24 – LAN on R2
  • 192.168.1.0/24 – Serial network between R2 and R3
  • 192.168.2.0/24 – LAN on R3

Figure 4 displays a successful ping from R1 to R2. Figure 5 displays an unsuccessful ping to the R3 LAN. This is because R1 does not have an entry in its routing table for the R3 LAN network.

The next hop can be identified by an IP address, exit interface, or both. How the destination is specified creates one of the three following route types:

  • Next-hop route – Only the next-hop IP address is specified
  • Directly connected static route – Only the router exit interface is specified
  • Fully specified static route – The next-hop IP address and exit interface are specified

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