To Next Page

To Previous Page

• The default setting is to exchange IPv4 addresses in unicast mode from the default

router.

• This command takes effect immediately.

• Examples

host1:vr1(config-router)#address-family ipv4 multicast

host1:vr1(config-router)#address-family vpnv4

host1:vr1(config-router)#address-family ipv4 unicast vrf vr2

• Use the no version to disable the exchange of a type of prefix.

• See address-family.

exit-address-family

• Use to exit Address Family Configuration mode and access Router Configuration mode.

• Example

host1:vr1(config-router-af)#exit-address-family

• There is no no version.

• See exit-address-family.

neighbor activate

• Use to specify a peer with which routes of the current address family are exchanged.

• A peer can be activated in more than one address family. By default, a peer is activated

only for the IPv4 unicast address family.

• The peer must be created in unicast IPv4 or VPN IPv4 before you can activate it in

another address family.

• 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.

• The address families that are actively exchanged over a BGP session are negotiated

when the session is established.

• This command takes effect immediately. 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.

• Example

host1:vr1(config-router-af)#neighbor 192.168.1.158 activate

JunosE 11.2.x BGP and MPLS Configuration Guide

Juniper JUNOSE 11.2.X BGP AND MPLS User Manual

Questions and Answers: