Hi I'm trying to do load balancing for service instances. Those instances will be accessed externally so this traffic will be delivered via gateway.
My setup is based on configuration dedicated for MX gateway covered in document : http://www.opencontrail.org/how-to-setup-opencontrail-gateway-juniper-mx-cisco-asr-and-software-gw/ My setup consists of Gateway EX9200 with Junos 14.2R3.8 and Contrail 2.20 (build 64) I'm seeing multiple paths announced by controllers. However there is no performed ECMP like for other paths from OSPF/BGP. >show route table VRF-7-public 10.11.12.11/32 10.11.12.11/32 *[BGP/170] 00:17:46, localpref 100, from 10.10.10.12 AS path: 64799 ?, validation-state: unverified > via gr-0/3/0.32772, Push 35 [BGP/170] 00:17:46, localpref 100, from 10.10.10.1 AS path: 64799 ?, validation-state: unverified > via gr-0/3/0.32772, Push 35 [BGP/170] 00:17:46, localpref 100, from 10.10.10.1 AS path: 64799 ?, validation-state: unverified > via gr-0/3/0.32774, Push 33 [BGP/170] 00:17:46, localpref 100, from 10.10.10.2 AS path: 64799 ?, validation-state: unverified > via gr-0/3/0.32774, Push 33 [BGP/170] 00:17:46, localpref 100, from 10.10.10.3 AS path: 64799 ?, validation-state: unverified > via gr-0/3/0.32772, Push 35 [BGP/170] 00:17:46, localpref 100, from 10.10.10.3 AS path: 64799 ?, validation-state: unverified > via gr-0/3/0.32774, Push 33 >show route forwarding-table table VRF-7-public matching 10.11.12.11/32 Routing table: VRF-7-public.inet Internet: Destination Type RtRef Next hop Type Index NhRef Netif 10.11.12.11/32 user 0 indr 1048659 6 Push 35 1149 2 gr-0/3/0.32772 After adding following command under RI configuration for second VRF. Situation slightly changes set routing-instances VRF-6-public routing-options rib VRF-6-public.inet.0 multipath >show route table VRF-6-public 10.11.12.251/32 VRF-6-public.inet.0: 9 destinations, 42 routes (9 active, 0 holddown, 0 hidden) @ = Routing Use Only, # = Forwarding Use Only + = Active Route, - = Last Active, * = Both 10.11.12.251/32 @[BGP/170] 02:05:30, localpref 100, from 10.10.10.2 AS path: 64799 ?, validation-state: unverified > via gr-0/3/0.32775, Push 23 [BGP/170] 02:05:29, localpref 100, from 10.10.10.1 AS path: 64799 ?, validation-state: unverified > via gr-0/3/0.32775, Push 23 [BGP/170] 02:05:29, localpref 100, from 10.10.10.1 AS path: 64799 ?, validation-state: unverified > via gr-0/3/0.32772, Push 35 [BGP/170] 02:05:30, localpref 100, from 10.10.10.2 AS path: 64799 ?, validation-state: unverified > via gr-0/3/0.32772, Push 35 [BGP/170] 02:05:30, localpref 100, from 10.10.10.3 AS path: 64799 ?, validation-state: unverified > via gr-0/3/0.32775, Push 23 [BGP/170] 02:05:30, localpref 100, from 10.10.10.3 AS path: 64799 ?, validation-state: unverified > via gr-0/3/0.32772, Push 35 #[Multipath/255] 01:00:09, metric2 0 via gr-0/3/0.32775, Push 23 > via gr-0/3/0.32772, Push 35 Unfortunately Still I can see only one path in forwarding table. >show route forwarding-table table VRF-6-public matching 10.11.12.251/32 Routing table: VRF-6-public.inet Internet: Destination Type RtRef Next hop Type Index NhRef Netif 10.11.12.251/32 user 0 indr 1048674 5 Push 35 1180 2 gr-0/3/0.32772 Also I've tried add additional following configuration but there is no change in behaviour set routing-instances VRF-6-public forwarding-options load-balance indexed-load-balance set routing-instances VRF-6-public forwarding-options load-balance per-flow hash-seed set routing-instances VRF-6-public forwarding-options load-balance-label-capability Does anyone has working example of ECMP on a gateway level for IP inside Contrail VN ? Regards Piotr Pieprzycki
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