[NETVIRT-724] Flows are not getting updated after neutron router static route got changed

Wed, 2 Aug 2017 06:22:46 +0000

Build : distribution-karaf-0.6.1-20170609.063104-235.tar.gz
first configured a ECMP route on neutron router with 5 next-hop and verified corresponding flows in Switches

stack@Ubuntu-97:~/devstack$ neutron router-show router1
------------------------------------------------------------------------------------+

Field

Value

------------------------------------------------------------------------------------+

admin_state_up	True
description
distributed	False
external_gateway_info
id	e1c6993b-e91f-45f4-8e61-f3da471cf5b4
name	Router1
routes	{"destination": "100.100.100.100/32", "nexthop": "10.10.1.2"}
	{"destination": "100.100.100.100/32", "nexthop": "10.10.1.3"}
	{"destination": "100.100.100.100/32", "nexthop": "10.10.1.4"}
	{"destination": "100.100.100.100/32", "nexthop": "10.10.1.5"}
	{"destination": "100.100.100.100/32", "nexthop": "10.10.2.2"}
status	ACTIVE
tenant_id	3a1edb44fa474300b32fe1b1aabf7e87

------------------------------------------------------------------------------------+

Switch 1 flow/group :
---------------------
cookie=0x8000003, duration=147.593s, table=21, n_packets=0, n_bytes=0, priority=42,ip,metadata=0x30d42/0xfffffe,nw_dst=100.100.100.100 actions=group:150014

group_id=150014,type=select,bucket=actions=group:150008,bucket=actions=group:150012,bucket=actions=group:150013,bucket=actions=resubmit(,220),set_field:fa:16:3e:eb:d2:cb->eth_dst,load:0x300->NXM_NX_REG6[],set_field:0x186a9->tun_id,bucket=actions=resubmit(,220),set_field:fa:16:3e:8a:40:66->eth_dst,load:0x300->NXM_NX_REG6[],set_field:0x186a9->tun_id

Switch 2 flow/group:
--------------------
cookie=0x8000003, duration=305.027s, table=21, n_packets=0, n_bytes=0, priority=42,ip,metadata=0x30d42/0xfffffe,nw_dst=100.100.100.100 actions=group:150014

group_id=150014,type=select,bucket=actions=group:150010,bucket=actions=group:150011,bucket=actions=resubmit(,220),set_field:fa:16:3e:52:5d:f8->eth_dst,load:0x600->NXM_NX_REG6[],set_field:0x186a9->tun_id,bucket=actions=resubmit(,220),set_field:fa:16:3e:82:6c:df->eth_dst,load:0x600->NXM_NX_REG6[],set_field:0x186a9->tun_id,bucket=actions=resubmit(,220),set_field:fa:16:3e:d9:a3:21->eth_dst,load:0x600->NXM_NX_REG6[],set_field:0x186a9->tun_id

=====================================================================
Update ECMP route in neutron router

stack@Ubuntu-97:~/devstack$
stack@Ubuntu-97:~/devstack$ neutron router-update Router1 --routes type=dict list=true destination=100.100.100.100/32,nexthop=10.10.1.2 destination=100.100.100.100/32,nexthop=10.10.1.3 destination=100.100.100.100/32,nexthop=10.10.1.4 destination=100.100.100.100/32,nexthop=10.10.1.5
Updated router: Router1
stack@Ubuntu-97:~/devstack$
stack@Ubuntu-97:~/devstack$ neutron router-show router1
------------------------------------------------------------------------------------+

Field

Value

------------------------------------------------------------------------------------+

admin_state_up	True
description
distributed	False
external_gateway_info
id	e1c6993b-e91f-45f4-8e61-f3da471cf5b4
name	Router1
routes	{"destination": "100.100.100.100/32", "nexthop": "10.10.1.2"}
	{"destination": "100.100.100.100/32", "nexthop": "10.10.1.3"}
	{"destination": "100.100.100.100/32", "nexthop": "10.10.1.4"}
	{"destination": "100.100.100.100/32", "nexthop": "10.10.1.5"}
status	ACTIVE
tenant_id	3a1edb44fa474300b32fe1b1aabf7e87

------------------------------------------------------------------------------------+
stack@Ubuntu-97:~/devstack$

Switch 1 flow/group after update:
---------------------------------
cookie=0x8000003, duration=622.128s, table=21, n_packets=0, n_bytes=0, priority=42,ip,metadata=0x30d42/0xfffffe,nw_dst=100.100.100.100 actions=group:150014

Switch 2 flow/group after update:
---------------------------------
cookie=0x8000003, duration=643.647s, table=21, n_packets=0, n_bytes=0, priority=42,ip,metadata=0x30d42/0xfffffe,nw_dst=100.100.100.100 actions=group:150014

OpenDaylight JIRA

[NETVIRT-724] Flows are not getting updated after neutron router static route got changed