• Use the show ip bgp vpnv4 vrf vrfName summary or show bgp ipv6 vpnv6 vrf vrfName
summary command to verify your ECMP configuration. The output includes a line
indicating the equal-cost paths:
Maximum number of both EBGP and IBGP equal-cost paths is 16
• Use the no version to restore the default value, 1.
• See maximum-paths.
Enabling VPN Address Exchange
To limit the exchange of routes to those from within the VPN-IPv4 address family, and
to set other desired BGP parameters:
1. Specify that the router exchanges addresses within a VPN by choosing the VPN-IPv4
address family.
2. Specify individual neighbors or peer groups to exchange routes with from only within
the current (VPN-IPv4) address family.
3. Configure BGP parameters for VPN services.
See “Configuring BGP Routing” on page 3, for information about configuring BGP
sessions. The section “Understanding BGP Command Scope” on page 18 has tables
that list BGP commands according to their scope. From Address Family Configuration
mode, you can issue the commands in Table 7 on page 19 and Table 9 on page 21.
4. Exit Address Family Configuration mode.
address-family
• Use to configure the router to exchange IPv4 addresses in VPN mode.
• The default setting is to exchange IPv4 addresses in unicast mode from the default
router.
• This command takes effect immediately.
• Example
host1:vr1(config-router)#address-family vpnv4
• 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
Copyright © 2010, Juniper Networks, Inc.444
JunosE 11.2.x BGP and MPLS Configuration Guide
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