-
Access global configuration mode.
device# configure terminal
-
Access BGP configuration mode.
device(config)# router bgp
-
Enable exchanging IPv6 prefixes over IPv4 for BGP.
device(config-bgp-router)# peer-group ipv6prefix-over-ipv4peer
Note
When the IPv6 address family is already activated under a peer-group and
the command peer-group ipv6prefix-over-ipv4peer is
executed, the Neighbor NLRI Negotiation capabilities are modified from
IPv4 Unicast Routes to IPv4 and IPv6 Unicast
Routes. This will reset the existing BGP IPv4 connections,
those that are mapped to a peer-group and have IPv6 address family
enabled.
This reset also happens when IPv6 Address Family is already
activated under a peer-group, and CLI peer-group
ipv6prefix-over-ipv4peer is being disabled.
This enables the exchanging of IPv6 addresses over IPv4 BGP sessions.
This configuration only applies to those BGP neighbors who are members of a peer
group.
-
Create a peer group.
device(config-bgp-router)# neighbor mypeergroup1 peer-group
This example shows the neighbor command, the peer group
name (mypeergroup1), and the peer-group keyword.
-
Specify the autonomous system number (ASN) of the peer group.
device(config-bgp-router)# neighbor mypeergroup1 remote-as 11
This example associates ASN 11 to the new peer group.
-
Associate a neighbor with the peer group.
device(config-bgp-router)# neighbor 192.168.10.125 peer-group mypeergroup1
This example shows the neighbor command, the IPv4 address
of the neighbor, the peer-group keyword, and the name of
the peer group (mypeergroup1).
-
Repeat Step 6 as needed to associate more neighbors with the peer group.
- Optional:
To associate an IPv6 neighbor with the peer group, use the following command.
device(config-bgp-router)# neighbor 2001:2018:8192::125 peer-group mypeergroup1
This example shows the neighbor command, the IPv6 address
of the neighbor, the peer-group keyword, and the name of
the peer group (mypeergroup1).
-
Access IPv6 address family configuration mode.
device(config-bgp-router)# address-family ipv6 unicast
-
Activate an IPv6 BGP session with the new peer group.
device(config-bgp-ipv6u)# neighbor mypeergroup1 activate
The following example summarizes the commands in this procedure
device# configure terminal
device(config)# router bgp
device(config-bgp-router)# peer-group ipv6prefix-over-ipv4peer
device(config-bgp-router)# neighbor mypeergroup1 peer-group
device(config-bgp-router)# neighbor mypeergroup1 remote-as 11
device(config-bgp-router)# neighbor 192.168.10.125 peer-group mypeergroup1
device(config-bgp-router)# address-family ipv6 unicast
device(config-bgp-ipv6u)# neighbor mypeergroup1 activate
