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show ip cef x.x.x.x detail

Zhixin Cui
Level 1
Level 1

SW1#sh ip cef 2.2.2.2 de
2.2.2.2/32, epoch 0, flags [attached]
Adj source: IP adj out of Vlan2, addr 2.2.2.2 12F2FA40
Dependent covered prefix type adjfib, cover 0.0.0.0/0
attached to Vlan2

 

what does "12F2FA40" mean?

 

thanks.

1 Accepted Solution

Accepted Solutions

balaji.bandi
Hall of Fame
Hall of Fame

As per i know  and i learned from docment, here is my notes :

 

The Cisco Express Forwarding table points to 16 hash buckets (load share table), which point to the adjacency table for parallel paths.
Each packet to be switched is broken up into the source and destination address pair and checked against the loadshare table".

 

as per the output load share table that identifies 1 path(s) or more and hash buckets are distributed equally among the 1 path(s).
The hex numbers(12F2FA40) simply identifies the path and these simple indicate which hash bucket belong to which path.

 

Some information for reference :

 

https://blog.ipspace.net/2014/02/this-is-not-host-route-youre-looking-for.html

 

BB

***** Rate All Helpful Responses *****

How to Ask The Cisco Community for Help

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3 Replies 3

balaji.bandi
Hall of Fame
Hall of Fame

As per i know  and i learned from docment, here is my notes :

 

The Cisco Express Forwarding table points to 16 hash buckets (load share table), which point to the adjacency table for parallel paths.
Each packet to be switched is broken up into the source and destination address pair and checked against the loadshare table".

 

as per the output load share table that identifies 1 path(s) or more and hash buckets are distributed equally among the 1 path(s).
The hex numbers(12F2FA40) simply identifies the path and these simple indicate which hash bucket belong to which path.

 

Some information for reference :

 

https://blog.ipspace.net/2014/02/this-is-not-host-route-youre-looking-for.html

 

BB

***** Rate All Helpful Responses *****

How to Ask The Cisco Community for Help

pman
Spotlight
Spotlight

Hi,

 

I found someone who asked a similar question and got a great answer to it, attaching a link on the subject:

 

https://community.cisco.com/t5/routing/cef-load-sharing/td-p/2464585

thanks.

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