IPv6 unicast address family

The IPv6 unicast address family configuration level provides access to commands that allow you to configure BGP4+ unicast routes. The commands that you enter at this level apply only to the IPv6 unicast address family.

BGP4+ supports the IPv6 address family configuration level.

You can generate a configuration for BGP4+ unicast routes that is separate and distinct from configurations for IPv4 unicast routes.

The commands that you can access while at the IPv6 unicast address family configuration level are also available at the IPv4 unicast address family configuration levels. Each address family configuration level allows you to access commands that apply to that particular address family only.

Where relevant, this chapter discusses and provides IPv6-unicast-specific examples. You must first configure IPv6 unicast routing for any IPv6 routing protocol to be active.

The following configuration options are allowed under BGP IPv6 address family unicast mode: 

device(config-bgp-ipv6u)# ?

Possible completions:

  aggregate-address               Configure BGP aggregate entries
  always-propagate                Allow readvertisement of best BGP routes not
                                  in IP Forwarding table
  bgp-redistribute-internal       Allow redistribution of iBGP routes into IGPs
  client-to-client-reflection     Configure client to client route reflection
  dampening                       Enable route-flap dampening
  default-information-originate   Originate Default Information
  default-metric                  Set metric of redistributed routes
  graceful-restart                Enables the BGP graceful restart capability
  maximum-paths                   Forward packets over multiple paths
  multipath                       Enable multipath for ibgp or ebgp neighbors
                                  only
  neighbor                        Specify a neighbor router
  network                         Specify a network to announce via BGP
  next-hop-enable-default         Enable default route for BGP next-hop lookup
  next-hop-recursion              Perform next-hop recursive lookup for BGP
                                  route
  redistribute                    Redistribute information from another
                                  routing protocol
  table-map                       Map external entry attributes into routing
                                  table
  update-time                     Configure igp route update interval

The following neighbor configuration options are allowed under BGP IPv6 address family unicast mode: 

device(config-bgp-ipv6u)# neighbor 2001:2018:8192::125 ?

Possible completions:
  activate                 Allow exchange of route in the current family mode
  advertisement-interval   Minimum interval between sending BGP routing updates
  allowas-in               Accept as-path with my AS present in it
  as-override              Override matching AS-number while sending update
  capability               Advertise capability to the peer
  default-originate        Originate default route to peer
  description              Neighbor by description
  ebgp-btsh                Enable EBGP TTL Security Hack Protection
  ebgp-multihop            Allow EBGP neighbors not on directly connected
                           networks
  filter-list              Establish BGP filters
  local-as                 Assign local-as number to neighbor
  maximum-prefix           Maximum number of prefix accept from this peer
  next-hop-self            Disable the next hop calculation for this neighbor
  password                 Enable TCP-MD5 password protection
  peer-group               Assign peer-group to neighbor
  prefix-list              Prefix List for filtering routes
  remote-as                Specify a BGP neighbor
  remove-private-as        Remove private AS number from outbound updates
  route-map                Apply route map to neighbor
  route-reflector-client   Configure a neighbor as Route Reflector client
  send-community           Send community attribute to this neighbor
  shutdown                 Administratively shut down this neighbor
  soft-reconfiguration     Per neighbor soft reconfiguration
  timers                   BGP per neighbor timers
  unsuppress-map           Route-map to selectively unsuppress suppressed routes
  update-source            Source of routing updates
  weight                   Set default weight for routes from this neighbor
Parent topic: BGP4+