I am attempting to apply a prefix list to filter EIGRP routes (via a distribute-list) but it is not working.
R2 is connected to R4 via point-to-point frame relay on DLCI 204 (frame-relay map is up and they are EIGRP neighbours). R4 has 192.168.4.0/24 as a LAN and is advertsing it to R2 (connected via DLCI 402).
R2 (sub) interface has IP 192.168.24.1
R4 interface has IP 192.168.24.2
My goal is to filter any route for 192.168.4.0/24 that R4 sends to R2. This will force R2 to learn about a route to 192.168.4.0/24 via 10.4.4.1 (this is R1 - a router also connected to R4). But the prefix list, despite being applied to the distribution list is not working. My setup is as follows:
R2#show ip prefix-list ip prefix-list block4: 2 entries seq 5 deny 192.168.4.0/24 seq 10 permit 0.0.0.0/0 le 32 R2#show run | s router router eigrp 12 network 10.2.2.0 0.0.0.3 network 10.4.4.0 0.0.0.3 network 172.16.23.0 0.0.0.255 network 172.16.24.0 0.0.0.255 distribute-list block4 in Serial0/0.204 no auto-summary R2#show ip int br Interface IP-Address OK? Method Status Protocol FastEthernet0/0 10.2.2.1 YES NVRAM up up Serial0/0 unassigned YES NVRAM up up Serial0/0.203 172.16.23.1 YES NVRAM up up Serial0/0.204 172.16.24.1 YES NVRAM up up FastEthernet0/1 10.4.4.2 YES NVRAM up up Serial0/1 unassigned YES NVRAM administratively down down R2#show ip route 192.168.4.0 Routing entry for 192.168.4.0/24 Known via "eigrp 12", distance 90, metric 2195456, type internal Redistributing via eigrp 12 Last update from 172.16.24.2 on Serial0/0.204, 00:05:29 ago Routing Descriptor Blocks: * 172.16.24.2, from 172.16.24.2, 00:05:29 ago, via Serial0/0.204 Route metric is 2195456, traffic share count is 1 Total delay is 21000 microseconds, minimum bandwidth is 1544 Kbit Reliability 255/255, minimum MTU 1500 bytes Loading 1/255, Hops 1
As you can see, despite the application of the distribution list, R2 is still getting the route for 192.168.4.0/24 from R4...
This working using a standard ACL.
I can post a full network diagram if you wish but hopefully this should be enough information. Can anyone help?
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.