lab 26-10-2020 BGP AS PATH prepend

[Marco Bonola < >]

Dear students,

attached the configuration files.

HOMEWORK: configure R1 to remove the private AS number from its customer.

Ciao

Marco

!

!
upgrade fpd auto
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
no ip icmp rate-limit unreachable
ip cef
!
!
!
!
no ip domain lookup
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
 log config
  hidekeys
! 
!
!
!
ip tcp synwait-time 5
!
!
!
!
interface Loopback0
 ip address 1.0.0.1 255.0.0.0
!
interface FastEthernet0/0
 no ip address
 shutdown
 duplex half
!
interface FastEthernet1/0
 ip address 10.1.6.1 255.255.255.252
 duplex auto
 speed auto
!
interface FastEthernet1/1
 ip address 10.1.2.1 255.255.255.252
 duplex auto
 speed auto
!
interface FastEthernet2/0
 ip address 10.1.3.1 255.255.255.252
 duplex auto
 speed auto
!
interface FastEthernet2/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
router bgp 1
 no synchronization
 bgp log-neighbor-changes
 network 1.0.0.0
 neighbor 10.1.2.2 remote-as 2
 neighbor 10.1.2.2 route-map SET_AS_PATH out
 neighbor 10.1.3.2 remote-as 3
 no auto-summary
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
!
logging alarm informational
no cdp log mismatch duplex
!
!
!
route-map SET_AS_PATH permit 10
 set as-path prepend 1 1
!
!
!
!
control-plane
!
!
!
!
!
!
!
gatekeeper
 shutdown
!
!
line con 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
 stopbits 1
line aux 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
 stopbits 1
line vty 0 4
 login
!
!
end
!

!
upgrade fpd auto
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R2
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
no ip icmp rate-limit unreachable
ip cef
!
!
!
!
no ip domain lookup
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
 log config
  hidekeys
! 
!
!
!
ip tcp synwait-time 5
!
!
!
!
interface Loopback0
 ip address 2.0.0.1 255.0.0.0
!
interface FastEthernet0/0
 no ip address
 shutdown
 duplex half
!
interface FastEthernet1/0
 ip address 10.1.2.2 255.255.255.252
 duplex auto
 speed auto
!
interface FastEthernet1/1
 ip address 10.2.5.1 255.255.255.252
 duplex auto
 speed auto
!
interface FastEthernet2/0
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface FastEthernet2/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
router bgp 2
 no synchronization
 bgp log-neighbor-changes
 network 2.0.0.0
 neighbor 10.1.2.1 remote-as 1
 neighbor 10.2.5.2 remote-as 5
 no auto-summary
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
!
logging alarm informational
no cdp log mismatch duplex
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
gatekeeper
 shutdown
!
!
line con 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
 stopbits 1
line aux 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
 stopbits 1
line vty 0 4
 login
!
!
end
!

!
upgrade fpd auto
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R3
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
no ip icmp rate-limit unreachable
ip cef
!
!
!
!
no ip domain lookup
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
 log config
  hidekeys
! 
!
!
!
ip tcp synwait-time 5
!
!
!
!
interface Loopback0
 ip address 3.0.0.1 255.0.0.0
!
interface FastEthernet0/0
 no ip address
 shutdown
 duplex half
!
interface FastEthernet1/0
 ip address 10.1.3.2 255.255.255.252
 duplex auto
 speed auto
!
interface FastEthernet1/1
 ip address 10.3.4.1 255.255.255.252
 duplex auto
 speed auto
!
interface FastEthernet2/0
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface FastEthernet2/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
router bgp 3
 no synchronization
 bgp log-neighbor-changes
 network 3.0.0.0
 neighbor 10.1.3.1 remote-as 1
 neighbor 10.3.4.2 remote-as 4
 no auto-summary
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
!
logging alarm informational
no cdp log mismatch duplex
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
gatekeeper
 shutdown
!
!
line con 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
 stopbits 1
line aux 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
 stopbits 1
line vty 0 4
 login
!
!
end
!

!
upgrade fpd auto
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R4
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
no ip icmp rate-limit unreachable
ip cef
!
!
!
!
no ip domain lookup
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
 log config
  hidekeys
! 
!
!
!
ip tcp synwait-time 5
!
!
!
!
interface Loopback0
 ip address 4.0.0.1 255.0.0.0
!
interface FastEthernet0/0
 no ip address
 shutdown
 duplex half
!
interface FastEthernet1/0
 ip address 10.3.4.2 255.255.255.252
 duplex auto
 speed auto
!
interface FastEthernet1/1
 ip address 10.4.5.1 255.255.255.252
 duplex auto
 speed auto
!
interface FastEthernet2/0
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface FastEthernet2/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
router bgp 4
 no synchronization
 bgp log-neighbor-changes
 network 4.0.0.0
 neighbor 10.3.4.1 remote-as 3
 neighbor 10.4.5.2 remote-as 5
 no auto-summary
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
!
logging alarm informational
no cdp log mismatch duplex
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
gatekeeper
 shutdown
!
!
line con 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
 stopbits 1
line aux 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
 stopbits 1
line vty 0 4
 login
!
!
end
!

!
upgrade fpd auto
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R5
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
no ip icmp rate-limit unreachable
ip cef
!
!
!
!
no ip domain lookup
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
 log config
  hidekeys
! 
!
!
!
ip tcp synwait-time 5
!
!
!
!
interface Loopback0
 ip address 5.0.0.1 255.0.0.0
!
interface FastEthernet0/0
 no ip address
 shutdown
 duplex half
!
interface FastEthernet1/0
 ip address 10.4.5.2 255.255.255.252
 duplex auto
 speed auto
!
interface FastEthernet1/1
 ip address 10.2.5.2 255.255.255.252
 duplex auto
 speed auto
!
interface FastEthernet2/0
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface FastEthernet2/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
router bgp 5
 no synchronization
 bgp log-neighbor-changes
 network 5.0.0.0
 neighbor 10.2.5.1 remote-as 2
 neighbor 10.4.5.1 remote-as 4
 no auto-summary
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
!
logging alarm informational
no cdp log mismatch duplex
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
gatekeeper
 shutdown
!
!
line con 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
 stopbits 1
line aux 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
 stopbits 1
line vty 0 4
 login
!
!
end
!
!
!
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R6
!
ip cef
no ip domain-lookup
no ip icmp rate-limit unreachable
ip tcp synwait 5
no cdp log mismatch duplex
!
line con 0
 exec-timeout 0 0
 logging synchronous
 privilege level 15
 no login
line aux 0
 exec-timeout 0 0
 logging synchronous
 privilege level 15
 no login
!
!
end

Attachment: topology.png
Description: PNG image