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[Bug 1549078] Re: neutron router static routes ecmp doesn't work

 

Bug closed due to lack of activity, please feel free to reopen if
needed.

** Changed in: neutron
       Status: In Progress => Won't Fix

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https://bugs.launchpad.net/bugs/1549078

Title:
  neutron router static routes ecmp doesn't work

Status in neutron:
  Won't Fix

Bug description:
  Create 1 router and set gateway network, then create 2 static routes with same prefix.
  ~/devstack$ neutron router-show R2   
  +-------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  | Field                   | Value                                                                                                                                                                                  |
  +-------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  | admin_state_up          | True                                                                                                                                                                                   |
  | availability_zone_hints |                                                                                                                                                                                        |
  | availability_zones      | nova                                                                                                                                                                                   |
  | distributed             | False                                                                                                                                                                                  |
  | external_gateway_info   | {"network_id": "d5d571b9-c7c2-443f-8591-7da9d40435a7", "enable_snat": true, "external_fixed_ips": [{"subnet_id": "4d033b6c-9a05-4aee-8462-ac909f86aa86", "ip_address": "172.16.3.3"}]} |
  | ha                      | False                                                                                                                                                                                  |
  | id                      | 1b2467b2-3b83-45bb-90e1-4d78c781d275                                                                                                                                                   |
  | name                    | R2                                                                                                                                                                                     |
  | routes                  | {"destination": "1.1.1.0/24", "nexthop": "172.16.3.100"}                                                                                                                               |
  |                         | {"destination": "1.1.1.0/24", "nexthop": "172.16.3.101"}                                                                                                                               |
  | status                  | ACTIVE                                                                                                                                                                                 |
  | tenant_id               | d1694a63f75a422b9c83e0693effa482                                                                                                                                                       |
  +-------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

  ~/devstack$ sudo ip netns exec qrouter-1b2467b2-3b83-45bb-90e1-4d78c781d275 ip neighbor show                                                        
  172.16.3.101 dev qg-4515a36e-77 lladdr 00:00:01:00:00:02 PERMANENT
  172.16.3.100 dev qg-4515a36e-77 lladdr 00:00:01:00:00:01 PERMANENT
  fe80::f816:3eff:fe8e:a49f dev qg-4515a36e-77 lladdr fa:16:3e:8e:a4:9f STALE
  fe80::5863:baff:fefe:c15e dev qg-4515a36e-77 lladdr 5a:63:ba:fe:c1:5e STALE
  ~/devstack$ sudo ip netns exec qrouter-1b2467b2-3b83-45bb-90e1-4d78c781d275 ip route        
  default via 172.16.3.1 dev qg-4515a36e-77 
  1.1.1.0/24 via 172.16.3.101 dev qg-4515a36e-77             ###ONLY 2nd route is installed.
  172.16.3.0/24 dev qg-4515a36e-77  proto kernel  scope link  src 172.16.3.3

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