NOTE: The [edit logical-systems] hierarchy level is not applicable in ACX
Series routers.
When you include the multipath statement at the following hierarchy levels,
protocol-independent load balancing is applied to the specified routing table:
•
[edit routing-instances routing-instance-name routing-options rib routing-table-name]
•
[edit logical-systems logical-system-name routing-instances routing-instance-name
routing-options rib routing-table-name]
NOTE: The [edit logical-systems] hierarchy level is not applicable in ACX
Series routers.
The vpn-unequal-cost statement is optional:
•
When you include it, protocol-independent load balancing is applied to VPN routes
that are equal until the IGP metric with regard to route selection.
•
When you do not include it, protocol-independent load balancing is applied to VPN
routes that are equal until the router identifier with regard to route selection.
NOTE: The vpn-unequal-cost statement is not applicable in ACX Series
routers.
The equal-external-internal statement is also optional. When you include it,
protocol-independent load balancing is applied to both internal and external BGP paths.
You can configure this in conjunction with egress IP header filtering (enabled with the
vrf-table-label statement). For more information, see Load Balancing and IP Header
Filtering for Layer 3 VPNs.
NOTE: You can include the vpn-unequal-cost equal-external-internal statement
and the l3vpn statement at the [edit routing-options forwarding-options
chained-composite-next-hop ingress] hierarchy level simultaneously. However,
if you do this, EBGP does not work. This means that when there are both
paths with chained next hops and paths with nonchained next hops as
candidates for EBGP equal-cost multipath (ECMP), the paths using chained
next hops are excluded. In a typical case, the excluded paths are the internal
paths.
853Copyright © 2017, Juniper Networks, Inc.
Chapter 26: Configuring Layer 3 VPNs
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