Command Manual – MPLS 
Quidway S8500 Series Routing Switches  Chapter 2  BGP/MPLS VPN Configuration Commands
 
Huawei Technologies Proprietary 
2-21 
2.1.23  ipv4-family 
Syntax 
BGP view, VPN-instance sub-address family view or VPNv4 sub-address family view: 
ipv4-family { vpn-instance vpn-instance-name | vpnv4 [ unicast ] } 
undo ipv4-family { vpn-instance vpn-instance-name | vpnv4 [ unicast ] } 
RIP view: 
ipv4-family [ unicast ] vpn-instance vpn-instance-name 
undo ipv4-family [ unicast ] vpn-instance vpn-instance-name 
View 
BGP view, VPN-instance sub-address family view or VPNv4 sub-address family view, 
and RIP view. 
Parameter 
vpn-instance vpn-instance-name: Associates a specified VPN-instance with the 
MBGP address family. This parameter is used to enter MBGP VPN-instance 
subaddress family view. 
vpnv4:  Enters MBGP VPNv4 address family view. 
unicast: Uses unicast sub–address family. 
Description 
Use the ipv4-family vpn-instance command to enter MBGP VPN-instance 
subaddress family view. 
Use the undo ipv4-family vpn-instance command to delete the association of a 
VPN-instance with MBGP address family, and return to BGP unicast view. 
Use the ipv4-family vpnv4 command to enter MBGP VPNv4 subaddress family view. 
Use the undo ipv4-family vpnv4 command to delete the configuration of MBGP 
VPNv4 subaddress family view. 
By default, unicast address is used when VPNv4 address family is configured. 
By default, use the unicast address when configuring the MBGP address family. 
Use this command to enter address family view and configure parameters related to 
BGP address family in this view. 
Related command: peer enable. 
Example 
# Associate a specified VPN-instance with MBGP address family to enter MBGP 
VPN-instance subaddress family view. You must first configure VPN-instance before 
you perform that configuration.