Juniper ACX2000 Configuration Guide

Configuring Load Balancing and Routing Policies
If you enable protocol-independent load balancing for Layer 3 VPNs by including the
multipath statement and if you also include the load-balance per-packet statement in
the routing policy configuration, packets are not load-balanced.
For example, a PE router has the following VRF routing instance configured:
[edit routing-instances]
load-balance-example {
instance-type vrf;
interface fe-0/1/1.0;
interface fe-0/1/1.1;
route-distinguisher 2222:2;
vrf-target target:2222:2;
routing-options {
multipath;
}
protocols {
bgp {
group group-example {
import import-policy;
family inet {
unicast;
}
export export-policy;
peer-as 4444;
local-as 3333;
multipath;
as-override;
neighbor 10.12.33.22;
}
}
}
}
The PE router also has the following policy statement configured:
[edit policy-options policy-statement export-policy]
from protocol bgp;
then {
load-balance per-packet;
}
When you include the multipath statement in the VRF routing instance configuration, the
paths are no longer marked as BGP paths but are instead marked as multipath paths.
Packets from the PE router are not load-balanced.
To ensure that VPN load-balancing functions as expected, do not include the from
protocol statement in the policy statement configuration. The policy statement should
be configured as follows:
[edit policy-options policy-statement export-policy]
then {
load-balance per-packet;
}
Copyright © 2017, Juniper Networks, Inc.854
ACX Series Universal Access Router Configuration Guide

Juniper ACX2000 Specifications

General

Brand	Juniper
Model	ACX2000
Category	Network Router
Language	English