# neighbor activate

#### Syntax

[ no | default ] neighbor { ipAddress | ipv6Address | peerGroupName } activate

#### Release Information

Command introduced before JunosE Release 7.1.0.
ipv6Address variable added in JunosE Release 8.0.0.

#### Description

Specifies a peer or peer group with which routes of the current address family are exchanged. A peer or peer group can be activated in more than one address family. By default, a peer or peer group is activated only for the IPv4 unicast address family. The address families that are actively exchanged over a BGP session are negotiated when the session is established. This command takes effect immediately. The no version indicates that routes of the current address family should not be exchanged with the peer or peer group. The default version removes the explicit configuration from the peer or peer group and reestablishes inheritance of the feature configuration.

If dynamic capability negotiation was not negotiated with the peer, the session is automatically bounced so that the exchanged address families can be renegotiated in the open messages when the session comes back up.

If dynamic capability negotiation was negotiated with the peer, BGP sends a capability message to the peer to advertise or withdraw the multiprotocol capability for the address family in which this command is issued.

If a neighbor is activated, BGP also sends the full contents of the BGP routing table of the newly activated address family.

#### Options

- ipAddress—IP address of BGP neighbor
- ipv6Address—IPv6 address of BGP neighbor
- peerGroupName—Name of a BGP peer group. If you specify a BGP peer group by using the peerGroupName argument, all the members of the peer group inherit the characteristic configured with this command, unless it is overridden for a specific peer.

#### Mode

Address Family Configuration, Router Configuration

#### Related Documentation

- Configuring BGP Signaling for L2VPNs and Configuring BGP Signaling for VPLS in the JunosE BGP and MPLS Configuration Guide