route-filter 0.0.0.0/0 through 0.0.0.0/7 reject;

high1432007

Hi all,

Qusetion from JNCIP study guide,

No default route or any 0.x prefix with a mask length up to /7

I believe answer is below,

route-filter 0.0.0.0/0 through 0.0.0.0/7 reject;

My question is above statement can be replace by below

route-filter 0.0.0.0/0 prefix-length-range /0-/7 reject; ????

tks

dwater2010

I guess in 0.0.0.0/0 prefix length you will match the any prefix not the default route. You can try it quickly in lab to see, I have tried it once and if I remember it then it was not giving me the desired output. Lets wait what experts says about it.

Aldur

dwater2010 wrote: »

I guess in 0.0.0.0/0 prefix length you will match the any prefix not the default route.

Yup, dwater is right, that'll block any prefix and not just defaults.