Cisco: Route Filtering ip prefix-list

ip-prefix-list, Route-Filtering, Cisco, Networking

My Learning topics result may not be accurate because of my misunderstanding!!!!

I STRONGLY RECOMMENDED to read the Official Documents(cisco.com a.k.a. CCO) and RFCs, any other books, sites.

And learn foundation, create lab yourself, configure, and verify any topics.

TODO

Topology 42bc1e5c-e081-4f89-82d4-4ea181c272c6 ip prefix-list lab

CML-P 2.0 Lab: routing-concepts.ip prefix-list.42bc1e5c.yaml · master · CCIE Enterprise Infrastructure v1.0 / labs · GitLab
Topology diagram: topologies.vsdx · master · CCIE Enterprise Infrastructure v1.0 / My Documents · GitLab

Lab Specification

Environment: CML-P 2.0
IGP: EIGRP

Base Configuration

Common Configuration Snippet

R1

R1

configure terminal
!
interface Loopback 0
 ip address 172.16.0.1 255.255.255.0
interface Loopback 1
 ip address 172.16.1.1 255.255.255.128
interface Loopback 2
 ip address 172.16.2.1 255.255.255.192
interface Loopback 3
 ip address 172.16.3.1 255.255.255.224
interface Loopback 4
 ip address 172.16.4.1 255.255.255.240
interface Loopback 5
 ip address 172.16.5.1 255.255.255.248
interface Loopback 6
 ip address 172.16.6.1 255.255.255.252
interface Loopback 7
 ip address 172.16.7.1 255.255.255.0
interface Loopback 8
 ip address 172.16.8.1 255.255.255.0
interface Loopback 9
 ip address 172.16.9.1 255.255.255.0
interface Loopback 10
 ip address 172.16.10.1 255.255.255.255
interface Loopback 11
 ip address 172.16.11.1 255.255.255.255
interface GigabitEthernet 0/0
 ip address 10.1.2.1 255.255.255.0
 no shutdown
!
router eigrp 1
 network 172.16.0.1 0.0.0.0
 network 172.16.1.1 0.0.0.0
 network 172.16.2.1 0.0.0.0
 network 172.16.3.1 0.0.0.0
 network 172.16.4.1 0.0.0.0
 network 172.16.5.1 0.0.0.0
 network 172.16.6.1 0.0.0.0
 network 172.16.7.1 0.0.0.0
 network 172.16.8.1 0.0.0.0
 network 172.16.9.1 0.0.0.0
 network 172.16.10.1 0.0.0.0
 network 172.16.11.1 0.0.0.0
 network 10.1.2.1 0.0.0.0
exit
!
end

R2

R2

configure terminal
!
interface Loopback 0
 ip address 172.16.0.17 255.255.255.240
interface Loopback 1
 ip address 172.16.0.33 255.255.255.240
interface GigabitEthernet 0/0
 ip address 10.2.3.2 255.255.255.0
 no shutdown
interface GigabitEthernet 0/1
 ip address 10.1.2.2 255.255.255.0
 no shutdown
interface GigabitEthernet 0/2
 ip address dhcp
 no shutdown
!
router eigrp 1
 ! redistribute from static to eigrp
 ! bandwidth[kbps], delay[10us], reliability 100%, load 1, MTU 1500 
 redistribute static metric 1000000 1 255 1 1500
 network 10.2.3.2 0.0.0.0
 network 10.1.2.2 0.0.0.0
 network 172.16.0.17 0.0.0.0
 network 172.16.0.33 0.0.0.0
exit
!
end

R3

R3

configure terminal
!
interface Loopback 0
 ip address 192.168.0.3 255.255.255.0
interface Loopback 1
 ip address 192.168.1.3 255.255.255.128
interface Loopback 2
 ip address 192.168.2.3 255.255.255.192
interface Loopback 3
 ip address 192.168.3.3 255.255.255.224
interface Loopback 4
 ip address 192.168.4.3 255.255.255.240
interface Loopback 5
 ip address 192.168.5.3 255.255.255.248
interface Loopback 6
 ip address 192.168.6.3 255.255.255.0
interface Loopback 7
 ip address 192.168.7.3 255.255.255.0
interface Loopback 8
 ip address 192.168.8.3 255.255.255.0
interface Loopback 9
 ip address 192.168.9.3 255.255.255.0
interface GigabitEthernet 0/1
 ip address 10.2.3.3 255.255.255.0
 no shutdown
!
router eigrp 1
 network 192.168.0.3 0.0.0.0
 network 192.168.1.3 0.0.0.0
 network 192.168.2.3 0.0.0.0
 network 192.168.3.3 0.0.0.0
 network 192.168.4.3 0.0.0.0
 network 192.168.5.3 0.0.0.0
 network 192.168.6.3 0.0.0.0
 network 192.168.7.3 0.0.0.0
 network 192.168.8.3 0.0.0.0
 network 192.168.9.3 0.0.0.0
 network 10.2.3.3 0.0.0.0
exit
!
end

Configure ip prefix-list basics 28773325-623a-41d7-9b43-389b7f293208

R2

configure terminal
!
ip prefix-list PRE01 permit 172.16.0.0/24
ip prefix-list PRE01 permit 172.16.1.0/24
ip prefix-list PRE01 permit 172.16.2.0/26
ip prefix-list PRE01 permit 172.16.3.0/26
ip prefix-list PRE01 permit 172.16.4.0/28
!
ip prefix-list PRE02 permit 172.16.0.0/16 ge 27
!
ip prefix-list PRE03 permit 172.16.0.0/16 le 28
!
ip prefix-list PRE04 permit 172.16.0.0/22 le 32
!
ip prefix-list PRE05 permit 172.16.0.0/16 ge 25 le 27
!
ip prefix-list PRE06 permit 0.0.0.0/0
!
ip prefix-list PRE07 permit 0.0.0.0/0 ge 32
!
ip prefix-list PRE08 deny 172.16.2.0/23 ge 26
ip prefix-list PRE08 permit 0.0.0.0/0 le 32
!
access-list 9 permit 172.16.4.0 0.0.1.255
! is euqivalent
ip prefix-list PRE09 permit 172.16.4.0/23 le 32
!
! if you want to match only 172.16.0.0/24 route
! ACL is matches 172.16.0.0/24 but also matches 172.16.0.16/28, 172.16.0.32/28
access-list 10 permit 172.16.0.0 0.0.0.255
! ip prefix-list is match only 172.16.0.0/24
ip prefix-list PRE10 permit 172.16.0.0/24
!
router eigrp 1
 distribute-list prefix PRE01 out GigabitEthernet 0/0
 ! or
 distribute-list prefix PRE02 out GigabitEthernet 0/0
 ! or
 distribute-list prefix PRE03 out GigabitEthernet 0/0
 ! or
 distribute-list prefix PRE04 out GigabitEthernet 0/0
 ! or
 distribute-list prefix PRE05 out GigabitEthernet 0/0
 ! or
 distribute-list prefix PRE06 out GigabitEthernet 0/0
 ! or
 distribute-list prefix PRE07 out GigabitEthernet 0/0
 ! or
 distribute-list prefix PRE08 out GigabitEthernet 0/0
 ! or
 distribute-list 9 out GigabitEthernet 0/0
 distribute-list prefix PRE09 out GigabitEthernet 0/0
 ! or
 distribute-list 10 out GigabitEthernet 0/0
 distribute-list prefix PRE10 out GigabitEthernet 0/0
exit
!
end

Verification ip prefix-list basics 28773325-623a-41d7-9b43-389b7f293208

show ip route eigrp
show ip prefix-list detail
show access-lists
traceroute 172.16.12.2
traceroute 172.16.0.1

R1 Console Log

R2 Console Log

References

PG1X WIKI

Table of Contents

Cisco: Route Filtering ip prefix-list

TODO

Topology 42bc1e5c-e081-4f89-82d4-4ea181c272c6 ip prefix-list lab

Lab Specification

Base Configuration

Configure ip prefix-list basics 28773325-623a-41d7-9b43-389b7f293208

Verification ip prefix-list basics 28773325-623a-41d7-9b43-389b7f293208

References

PG1X WIKI

User Tools

Site Tools

Table of Contents

Cisco: Route Filtering ip prefix-list

TODO

Topology 42bc1e5c-e081-4f89-82d4-4ea181c272c6 ip prefix-list lab

Lab Specification

Base Configuration

Configure ip prefix-list basics 28773325-623a-41d7-9b43-389b7f293208

Verification ip prefix-list basics 28773325-623a-41d7-9b43-389b7f293208

References

Page Tools