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sh ip cef

Answered Question
Aug 26th, 2012
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What are different types of entries and their meaning in the "Next hop" field from the "sh ip cef" command

Correct Answer by Julio Carvajal about 4 years 12 months ago

Hello Sabari,


Prefix: The longest match for a specific subnet or IP address. ( Could be a host or a network, this is what makes the difference from the routing table and the forwarding information table because you seldom see host Ip's on the routing table unless configured or advertised) This will provide a better performance at the time to do a route lookup.


Next hop:  1-Attached: Directly connected

                2- x.x.x.x : Ip address of the next hop Ip address

                3-Receive: No next hop defined so need to be sent to the Router Engine (RE) for further lookup


Hope this could help


Julio


Remember to rate all the helpful posts


Julio

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Correct Answer
Julio Carvajal Sun, 08/26/2012 - 14:40
User Badges:
  • Purple, 4500 points or more

Hello Sabari,


Prefix: The longest match for a specific subnet or IP address. ( Could be a host or a network, this is what makes the difference from the routing table and the forwarding information table because you seldom see host Ip's on the routing table unless configured or advertised) This will provide a better performance at the time to do a route lookup.


Next hop:  1-Attached: Directly connected

                2- x.x.x.x : Ip address of the next hop Ip address

                3-Receive: No next hop defined so need to be sent to the Router Engine (RE) for further lookup


Hope this could help


Julio


Remember to rate all the helpful posts


Julio

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