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tech:network:cisco:bgp:bgp:no-auto-summary:no-auto-summary

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BGP: no auto-summary

Topology

IP

Project name: ccna-bgp32-no-auto-summary

  • R1
enable
configure terminal
!
hostname R1
no ip domain-lookup
line console 0
exec-timeout 0 0
logging synchronous
exit
!
interface Loopback 1
ip address 100.10.1.1 255.255.255.0
no shutdown
exit
interface Loopback 2
ip address 100.10.2.1 255.255.255.0
no shutdown
exit
interface Loopback 3
ip address 100.10.3.1 255.255.255.0
no shutdown
exit
interface Loopback 4
ip address 100.10.4.1 255.255.255.0
no shutdown
exit
interface Loopback 5
ip address 100.10.5.1 255.255.255.0
no shutdown
exit
interface Loopback 6
ip address 100.10.6.1 255.255.255.0
no shutdown
exit
interface Loopback 7
ip address 100.10.7.1 255.255.255.0
no shutdown
exit
interface Loopback 8
ip address 100.10.8.1 255.255.255.0
no shutdown
exit
interface Loopback 9
ip address 100.10.9.1 255.255.255.0
no shutdown
exit
interface Loopback 10
ip address 100.10.10.1 255.255.255.0
no shutdown
exit
interface Loopback 11
ip address 100.10.11.1 255.255.255.0
no shutdown
exit
interface Loopback 12
ip address 100.10.12.1 255.255.255.0
no shutdown
exit
interface Loopback 13
ip address 100.10.13.1 255.255.255.0
no shutdown
exit
interface Loopback 14
ip address 100.10.14.1 255.255.255.0
no shutdown
exit
interface Loopback 15
ip address 100.10.15.1 255.255.255.0
no shutdown
exit
interface Loopback 16
ip address 100.10.16.1 255.255.255.0
no shutdown
exit
interface Loopback 17
ip address 100.10.17.1 255.255.255.0
no shutdown
exit
interface Loopback 18
ip address 100.10.18.1 255.255.255.0
no shutdown
exit
interface Loopback 19
ip address 100.10.19.1 255.255.255.0
no shutdown
exit
interface Loopback 20
ip address 100.10.20.1 255.255.255.0
no shutdown
exit
interface GigabitEthernet 0/0
ip address 101.1.2.1 255.255.255.0
no shutdown
exit
!
end
write
  • R2
enable
configure terminal
!
hostname R2
no ip domain-lookup
line console 0
exec-timeout 0 0
logging synchronous
exit
!
interface Loopback 1
ip address 102.20.1.2 255.255.255.0
no shutdown
exit
interface GigabitEthernet 0/0
ip address 101.1.2.2 255.255.255.0
no shutdown
exit
!
end
write

Basic BGP Configuration

  • R1
configure terminal
!
router bgp 10
network 100.10.1.0 mask 255.255.255.0
neighbor 101.1.2.2 remote-as 20
exit
!
end
  • R2
configure terminal
!
router bgp 20
network 102.20.1.0 mask 255.255.255.0
neighbor 101.1.2.1 remote-as 10
exit
!
end
R1#show running-config all | section router bgp 10
router bgp 10
 no synchronization
 bgp fast-external-fallover
 bgp route-map-cache
 no bgp asnotation dot
 no bgp consistency-checker
 bgp client-to-client reflection
 bgp client-to-client reflection intra-cluster cluster-id any
 bgp transport path-mtu-discovery
 bgp enforce-first-as
 bgp log-neighbor-changes
 bgp dynamic-med-interval 600
 bgp listen limit 100
 bgp update-delay 120
 bgp refresh stalepath-time 0
 bgp refresh max-eor-time 0
 bgp regexp deterministic
 bgp default ipv4-unicast
 bgp default ipv6-nexthop
 bgp default local-preference 100
 bgp default route-target filter
 bgp aggregate-timer 30
 bgp update-group split as-override
 bgp nexthop trigger enable
 bgp nexthop trigger delay 5
 bgp scan-time 60
 network 100.10.1.0 mask 255.255.255.0
 timers bgp 60 180 0
 neighbor 101.1.2.2 remote-as 20
 distance bgp 20 200 200
 distance mbgp 20 200 200
 no auto-summary

References

tech/network/cisco/bgp/bgp/no-auto-summary/no-auto-summary.1550637974.txt.gz · Last modified: 2019/02/20 13:46 by wnoguchi