BGP: Difference between revisions
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* BGP Synchronization |
* BGP Synchronization |
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* BGP Handling of Next Hop Address |
* BGP Handling of Next Hop Address |
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=== Configurations === |
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;R1 Config: |
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<pre> |
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! |
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interface Loopback1 |
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ip address 1.1.1.1 255.255.255.255 |
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! |
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! |
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interface Serial1/0 |
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ip address 10.1.13.1 255.255.255.0 |
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serial restart-delay 0 |
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! |
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interface Serial1/1 |
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ip address 10.1.12.1 255.255.255.0 |
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serial restart-delay 0 |
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! |
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! |
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router ospf 1 |
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log-adjacency-changes |
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network 0.0.0.0 255.255.255.255 area 0 |
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! |
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router bgp 5500 |
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no synchronization |
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bgp log-neighbor-changes |
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neighbor IBGP_PEERS peer-group |
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neighbor IBGP_PEERS remote-as 5500 |
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neighbor IBGP_PEERS update-source Loopback1 |
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neighbor IBGP_PEERS next-hop-self |
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neighbor 2.2.2.2 peer-group IBGP_PEERS |
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neighbor 3.3.3.3 peer-group IBGP_PEERS |
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neighbor 4.4.4.4 remote-as 5500 |
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neighbor 4.4.4.4 update-source Loopback1 |
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no auto-summary |
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! |
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</pre> |
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;R2 Config: |
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<pre> |
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! |
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interface Loopback1 |
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ip address 2.2.2.2 255.255.255.255 |
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! |
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! |
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interface Serial1/0 |
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ip address 10.1.24.1 255.255.255.0 |
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serial restart-delay 0 |
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! |
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interface Serial1/1 |
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ip address 10.1.12.2 255.255.255.0 |
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serial restart-delay 0 |
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! |
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! |
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router ospf 1 |
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log-adjacency-changes |
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network 0.0.0.0 255.255.255.255 area 0 |
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! |
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router bgp 5500 |
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no synchronization |
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bgp log-neighbor-changes |
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neighbor IBGP_PEERS peer-group |
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neighbor IBGP_PEERS remote-as 5500 |
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neighbor IBGP_PEERS update-source Loopback1 |
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neighbor IBGP_PEERS next-hop-self |
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neighbor 1.1.1.1 peer-group IBGP_PEERS |
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neighbor 3.3.3.3 peer-group IBGP_PEERS |
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neighbor 4.4.4.4 peer-group IBGP_PEERS |
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no auto-summary |
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! |
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</pre> |
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;R3 Config: |
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<pre> |
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! |
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interface Loopback1 |
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ip address 3.3.3.3 255.255.255.255 |
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! |
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! |
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interface Serial1/0 |
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ip address 10.1.13.2 255.255.255.0 |
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serial restart-delay 0 |
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! |
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interface Serial1/1 |
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ip address 10.1.34.1 255.255.255.0 |
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serial restart-delay 0 |
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! |
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! |
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router ospf 1 |
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log-adjacency-changes |
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network 0.0.0.0 255.255.255.255 area 0 |
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! |
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router bgp 5500 |
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no synchronization |
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bgp log-neighbor-changes |
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neighbor IBGP_PEERS peer-group |
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neighbor IBGP_PEERS remote-as 5500 |
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neighbor IBGP_PEERS update-source Loopback1 |
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neighbor IBGP_PEERS next-hop-self |
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neighbor 1.1.1.1 peer-group IBGP_PEERS |
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neighbor 2.2.2.2 peer-group IBGP_PEERS |
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neighbor 4.4.4.4 peer-group IBGP_PEERS |
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no auto-summary |
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! |
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</pre> |
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;R4 Config: |
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<pre> |
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! |
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interface Loopback1 |
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ip address 4.4.4.4 255.255.255.255 |
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! |
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! |
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interface Serial1/0 |
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ip address 10.1.24.2 255.255.255.0 |
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serial restart-delay 0 |
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! |
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interface Serial1/1 |
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ip address 10.1.34.2 255.255.255.0 |
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serial restart-delay 0 |
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! |
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interface Serial1/2 |
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ip address 10.1.45.1 255.255.255.0 |
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serial restart-delay 0 |
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! |
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! |
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router ospf 1 |
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log-adjacency-changes |
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network 0.0.0.0 255.255.255.255 area 0 |
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! |
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router bgp 5500 |
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no synchronization |
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bgp log-neighbor-changes |
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neighbor IBGP_PEERS peer-group |
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neighbor IBGP_PEERS remote-as 5500 |
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neighbor IBGP_PEERS update-source Loopback1 |
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neighbor IBGP_PEERS next-hop-self |
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neighbor 1.1.1.1 peer-group IBGP_PEERS |
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neighbor 1.1.1.1 update-source Loopback1 |
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neighbor 2.2.2.2 peer-group IBGP_PEERS |
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neighbor 3.3.3.3 peer-group IBGP_PEERS |
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neighbor 5.5.5.5 remote-as 6500 |
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neighbor 5.5.5.5 ebgp-multihop 2 |
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neighbor 5.5.5.5 update-source Loopback1 |
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no auto-summary |
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! |
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ip route 5.5.5.5 255.255.255.255 10.1.45.2 |
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! |
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! |
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</pre> |
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;R5 Config: |
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<pre> |
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! |
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interface Loopback0 |
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ip address 200.1.1.1 255.255.255.255 |
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! |
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interface Loopback1 |
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ip address 200.1.2.1 255.255.255.255 |
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! |
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interface Loopback2 |
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ip address 200.1.3.1 255.255.255.255 |
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! |
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interface Loopback3 |
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ip address 200.1.4.1 255.255.255.255 |
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! |
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interface Loopback4 |
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ip address 200.1.5.1 255.255.255.255 |
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! |
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interface Loopback5 |
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ip address 200.1.6.1 255.255.255.255 |
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! |
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interface Loopback6 |
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ip address 50.1.1.1 255.255.255.0 |
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! |
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interface Loopback7 |
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ip address 5.5.5.5 255.255.255.255 |
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! |
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interface Serial1/2 |
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ip address 10.1.45.2 255.255.255.0 |
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serial restart-delay 0 |
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! |
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! |
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router bgp 6500 |
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no synchronization |
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bgp log-neighbor-changes |
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network 50.1.1.0 mask 255.255.255.0 |
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redistribute connected route-map FILTER |
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neighbor 4.4.4.4 remote-as 5500 |
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neighbor 4.4.4.4 ebgp-multihop 2 |
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neighbor 4.4.4.4 update-source Loopback7 |
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no auto-summary |
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! |
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ip route 4.4.4.4 255.255.255.255 10.1.45.1 |
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! |
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! |
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! |
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access-list 50 permit 200.1.1.1 |
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access-list 50 permit 200.1.2.1 |
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access-list 50 permit 200.1.3.1 |
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access-list 50 permit 200.1.4.1 |
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! |
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route-map FILTER permit 10 |
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match ip address 50 |
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! |
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</pre> |
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<br /> |
<br /> |
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