104 lines
3.1 KiB
Django/Jinja
104 lines
3.1 KiB
Django/Jinja
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!
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! FRR BGP Configuration Template (Managed by Ansible)
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!
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frr version
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frr defaults traditional
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hostname {{ inventory_hostname }}
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log syslog informational
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!
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! Static route for originating a network in BGP if it's not directly connected
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!
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! Interface configurations
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interface eth1
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ip address {{ lan_ip }}/{{ lan_network_prefix }}
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interface gre-main
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ip address {{ gre_main_ip }}/30
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interface gre-backup
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ip address {{ gre_backup_ip }}/30
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!
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! BGP Configuration
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router bgp {{ local_asn }}
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bgp router-id {{ lan_ip }}
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!
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! Networks to originate from this router
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network {{ lan_cidr }}
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!
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! iBGP neighbor configuration
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neighbor {{ remote_ibgp_peer }} remote-as {{ local_asn }}
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neighbor {{ remote_ibgp_peer }} update-source eth1
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!
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! eBGP neighbors configuration
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neighbor {{ gre_main_ip | ipmath(1) }} remote-as {{ remote_asn }}
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neighbor {{ gre_main_ip | ipmath(1) }} ebgp-multihop 255
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neighbor {{ gre_main_ip | ipmath(1) }} update-source gre-main
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neighbor {{ gre_main_ip | ipmath(1) }} timers 10 30
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neighbor {{ gre_backup_ip | ipmath(1) }} remote-as {{ remote_asn }}
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neighbor {{ gre_backup_ip | ipmath(1) }} ebgp-multihop 255
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neighbor {{ gre_backup_ip | ipmath(1) }} update-source gre-backup
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neighbor {{ gre_backup_ip | ipmath(1) }} timers 10 30
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!
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address-family ipv4 unicast
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! Activate neighbors
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neighbor {{ remote_ibgp_peer }} activate
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neighbor {{ gre_main_ip | ipmath(1) }} activate
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neighbor {{ gre_backup_ip | ipmath(1) }} activate
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! Policy configurations for neighbors
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neighbor {{ remote_ibgp_peer }} next-hop-self
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neighbor {{ remote_ibgp_peer }} route-map ALLOW-RFC1918-OUT out
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neighbor {{ gre_main_ip | ipmath(1) }} route-map FROM-MAIN-PEER in
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neighbor {{ gre_main_ip | ipmath(1) }} route-map TO-MAIN-PEER out
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neighbor {{ gre_backup_ip | ipmath(1) }} route-map FROM-BACKUP-PEER in
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neighbor {{ gre_backup_ip | ipmath(1) }} route-map TO-BACKUP-PEER out
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exit-address-family
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!
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!
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! Route Maps for BGP Policy
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! Inbound policy from the main external peer
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route-map FROM-MAIN-PEER permit 10
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match ip address prefix-list RFC1918-NETS
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set local-preference {{ local_pref_main | default(400) }}
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! Inbound policy from the backup external peer
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route-map FROM-BACKUP-PEER permit 10
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match ip address prefix-list RFC1918-NETS
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set local-preference {{ local_pref_backup | default(300) }}
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!
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! Outbound policy for the main external peer
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route-map TO-MAIN-PEER permit 10
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match ip address prefix-list RFC1918-NETS
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set metric {{ bgp_med_main }}
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!
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! Outbound policy for the main external peer
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route-map TO-BACKUP-PEER permit 10
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match ip address prefix-list RFC1918-NETS
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set metric {{ bgp_med_backup }}
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!
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!
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! Prefix List for RFC1918 networks and default route filtering
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! Rule 1: Explicitly deny the default route
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ip prefix-list RFC1918-NETS seq 5 deny 0.0.0.0/0
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! Rule 2: Permit 10.0.0.0/8 and all its subnets
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ip prefix-list RFC1918-NETS seq 10 permit 10.0.0.0/8 le 32
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! Rule 3: Permit 172.16.0.0/12 and all its subnets
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ip prefix-list RFC1918-NETS seq 15 permit 172.16.0.0/12 le 32
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! Rule 4: Permit 192.168.0.0/16 and all its subnets
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ip prefix-list RFC1918-NETS seq 20 permit 192.168.0.0/16 le 32
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!
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! VTY lines for management access
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line vty
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!
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