cisco-ios-xr.config

# BGP Session Culling Example - Cisco IOS XR
# Culling type: Involuntary BGP Session Teardown

ipv6 access-list acl-ipv6-permit-all-except-bgp
   10 deny tcp 2001:db8:2::/64 eq bgp 2001:db8:2::/64
   20 deny tcp 2001:db8:2::/64 2001:db8:2::/64 eq bgp
   30 permit ipv6 any any
!
ip access-list acl-ipv4-permit-all-except-bgp
   10 deny tcp 192.0.2.0/24 eq bgp 192.0.2.0/24
   20 deny tcp 192.0.2.0/24 192.0.2.0/24 eq bgp
   30 permit ip any any
!
interface Ethernet33
   description IXP Participant Affected by Maintenance
   ip access-group acl-ipv4-permit-all-except-bgp in
   ipv6 access-group acl-ipv6-permit-all-except-bgp in
!