Ip Route to NULL0?

Apr 24, 2006 2 Replies
Ip Route to NULL0? open original image

We received a Router from an ISP and they have the Following Line in it.



ip route A.B.C.0 255.255.255.0 Null0 254 permanent



Where the local Ethernet Interface is: A.B.C.1 255.255.255.0



What is the Purpose of this? If the Ethernet interface is Down, route all traffic to NULL?



Thanks, Scott


The purpose is to prevent routing loops.

Here is an example

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Good Luck

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