Activate IPv6 Address Family for a BGP Peer Group Using Default VRF

To configure multi-protocol BGP for exchanging IPv6 prefixes over IPv4 BGP Sessions for a BGP peer group using default VRF, do the following:

Access global configuration mode.
```
 device# configure terminal 
```
Access BGP configuration mode.
```
device(config)# router bgp
```
Specify the autonomous system in which your device resides.
```
device(config-bgp-router)# local-as 1000
```

Navigate into the Peer Group context.

device(config-bgp-router)# neighbor pgMain peer-group
	%Warning: Please activate Peer-group for IPv6 address-family

Specify the autonomous system in which the remote peer-group resides. Assign the remote AS to the peer-group.
```
device(config-bgp-router)# neighbor pgMain remote-as 1001
```

Assign the BGP neighbor to the Peer Group.

device(config-bgp-router)# neighbor 192.0.2.10 peer-group pgMain

Configure the IPv6 address family for the default VRF.

device(config-bgp-router)# address-family ipv6 unicast
device(config-bgp-ipv6u)#

Activate the IPv6 Address Family for the peer group.
```
device(config-bgp-ipv6u)# neighbor pgMain activate
```

Example

The following is a consolidation of tasks to perform to activate IPv6 address family for a BGP peer using default VRF.

router bgp
local-as 1000
neighbor pgMain peer-group
neighbor pgMain remote-as 1001
neighbor 192.0.2.10 peer-group pgMain
address-family ipv6 unicast 
neighbor pgMain activate