!
frr version
frr defaults traditional
hostname {{ inventory_hostname }}
log syslog informational
!
router bgp {{ local_asn }}
 bgp router-id {{ lan_ip }}
 !
 network {{ lan_cidr }}
 network {{ external_cidr }}
 !
 neighbor {{ hostvars['router1'].lan_ip if inventory_hostname != 'router1' else hostvars['router2'].lan_ip }} remote-as {{ local_asn }}
 neighbor {{ hostvars['router1'].lan_ip if inventory_hostname != 'router1' else hostvars['router2'].lan_ip }} update-source eth1
 !
 neighbor {{ gre_main_ip | ipmath(1) }} remote-as {{ remote_asn }}
 neighbor {{ gre_main_ip | ipmath(1) }} update-source gre-main
 neighbor {{ gre_main_ip | ipmath(1) }} timers 10 30
 !
 neighbor {{ gre_backup_ip | ipmath(1) }} remote-as {{ remote_asn }}
 neighbor {{ gre_backup_ip | ipmath(1) }} update-source gre-backup
 neighbor {{ gre_backup_ip | ipmath(1) }} timers 10 30
 !
 address-family ipv4 unicast
  neighbor {{ hostvars['router1'].lan_ip if inventory_hostname != 'router1' else hostvars['router2'].lan_ip }} activate
  neighbor {{ hostvars['router1'].lan_ip if inventory_hostname != 'router1' else hostvars['router2'].lan_ip }} next-hop-self
  neighbor {{ gre_main_ip | ipmath(1) }} activate
  neighbor {{ gre_backup_ip | ipmath(1) }} activate
  neighbor {{ gre_main_ip | ipmath(1) }} route-map SET-PREF-{{ local_pref_main }} in
  neighbor {{ gre_backup_ip | ipmath(1) }} route-map SET-PREF-{{ local_pref_backup }} in
  neighbor {{ hostvars['router1'].lan_ip if inventory_hostname != 'router1' else hostvars['router2'].lan_ip }} route-map OUT-LAN out
  neighbor {{ gre_main_ip | ipmath(1) }} route-map OUT-EXTERNAL out
  neighbor {{ gre_backup_ip | ipmath(1) }} route-map OUT-EXTERNAL out
 exit-address-family
!
route-map SET-PREF-400 permit 10
 set local-preference 400
!
route-map SET-PREF-300 permit 10
 set local-preference 300
!
route-map SET-PREF-200 permit 10
 set local-preference 200
!
route-map SET-PREF-100 permit 10
 set local-preference 100
!
route-map OUT-LAN permit 10
 match ip address prefix-list LAN-ONLY
!
route-map OUT-EXTERNAL permit 10
 match ip address prefix-list EXTERNAL-ONLY
!
ip prefix-list LAN-ONLY seq 5 permit {{ lan_cidr }}
ip prefix-list EXTERNAL-ONLY seq 5 permit {{ external_cidr }}
!
line vty
!