# How to configure Prefix-List on Cisco Router **URL:** \ **Category:** Lessons Discussion\ **Created:** [December 24, 2016, 6:18pm UTC](https://forum.networklessons.com/t/how-to-configure-prefix-list-on-cisco-router/944 "2016-12-24T18:18:27Z")\ **Posts on this page:** 1\ **Showing post:** 52
**Author:** ![alex.w.deel](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/alex.w.deel/32/1085_2.png) [@alex.w.deel](https://forum.networklessons.com/u/alex.w.deel)\ **Post date:** [July 24, 2018, 11:56pm UTC](https://forum.networklessons.com/t/how-to-configure-prefix-list-on-cisco-router/944/52 "2018-07-24T23:56:32Z")
Rene, I currently have set up R2 connected to R4. R4 is advertising in EIGRP: 192.168.0.1/24 192.168.1.1/30 (255.255.255.252) 192.168.2.1/29 (255.255.255.248 192.168.3.1/28 (255.255.255.240) I’m simply just practicing with prefix-list and wanted to filter out the /30 /29 /28 routes, and only advertise the /24 On R4 I have done: ``` R4(config#) ip prefix-list test deny 192.168.0.0/16 ge 28 le 30 R4(config#) ip prefix-list test permit 0.0.0.0/0 le 32 R4(config-router#) distribute-list test out serial0/0/0 ``` However, R2 is still showing all of the above mentioned routes in its routing table. I also tried filtering the same routes IN on R2 but to no effect. Where am I going wrong? Thank you so much! --- _[View the full topic](https://forum.networklessons.com/t/how-to-configure-prefix-list-on-cisco-router/944)._