Suppress denied prefix

[Roel Reyes]

Hi all, 

Can anyone give me thoughts or idea why would someone create prefix-list with deny action matched it with route map then apply it to suppress route? Why not simple let the route empty meaning dont apply suppress at all since your prefix list has deny action meaning dont suppress. 

Thanks, 

[Georg Pauwen]

Hello,

can you post the (part of the) configuration that you are referring to ? Basically, you deny what you don't want to suppress.

So:

ip prefix-list UNSUPPRESS seq 10 deny 1.1.1.1/32
!
route-map UNSUPPRESS_MAP permit 1
match ip address prefix-list UNSUPPRESS
!
route-map UNSUPPRESS_MAP permit 2

is the same as:

ip prefix-list UNSUPPRESS seq 10 permit 1.1.1.1/32
!
route-map UNSUPPRESS_MAP deny 1
match ip address prefix-list UNSUPPRESS
!
route-map UNSUPPRESS_MAP permit 2

[Roel Reyes]

Hi sir thanks for your sample,

Your example is for unsuppress and currently i have suppress config


aggregate-address 192.168.84.0 255.255.252.0 suppress-map SuppressMap

ip prefix-list Specific seq 10 deny 192.168.84.0/24
ip prefix-list Specific seq 15 deny 192.168.85.0/24
ip prefix-list Specific seq 20 deny 192.168.86.0/24
ip prefix-list Specific seq 25 deny 192.168.87.0/24
ip prefix-list Specific seq 100 permit 0.0.0.0/0 le 32

route-map SuppressMap permit 10
match ip address prefix-list Specific