Uploaded image for project: 'netvirt'
  1. netvirt
  2. NETVIRT-1363

FLOWs are getting recreated once the VM deleted and configured again even without subnet ip

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Low
    • Resolution: Done
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
    • Labels:
    • Environment:

      Openstack PIKE ODL Flourine

    • Priority:
      Lowest

      Description

      Topology
      VM1 VM2

       
       
      L3VPN

      Compute-node-1 ---------- Compute-node-2

      Observation

      FIB Entries and FLOWs are getting recreated once the VM deleted and configured again(even without subnet ipv6)

      Steps to reproduce
      1) configure two VM with different subnet IPv4/IPv6 Address(Via DHCP)

      2) configure ipv6 subnet address on VM1 and verify traffic from VM2(traffic was working)

      3) Delete the VMs(Flows were got deleted and FIB entries were removed)

      4) Configure again the VM with same name( not configured the IPv6 Subnet)
      Logs

      Attached karaf for your reference

      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$ sudo ovs-ofctl -OOpenflow13 dump-flows br-int | grep table=45,
      cookie=0x4000000, duration=730.411s, table=45, n_packets=1, n_bytes=70, priority=50,icmp6,metadata=0x1389000000/0xffff000000,icmp_type=133,icmp_code=0 actions=CONTROLLER:65535
      cookie=0x4000000, duration=730.336s, table=45, n_packets=1, n_bytes=86, priority=50,icmp6,metadata=0x1389000000/0xffff000000,icmp_type=135,icmp_code=0,nd_target=2001:db8:0:2::1 actions=CONTROLLER:65535
      cookie=0x4000000, duration=730.336s, table=45, n_packets=1, n_bytes=86, priority=50,icmp6,metadata=0x1389000000/0xffff000000,icmp_type=135,icmp_code=0,nd_target=fe80::f816:3eff:fe47:2ae8 actions=CONTROLLER:65535
      cookie=0x4000000, duration=730.336s, table=45, n_packets=0, n_bytes=0, priority=50,icmp6,metadata=0x1389000000/0xffff000000,ipv6_src=2001:db8:0:2:f816:3eff:fe43:294,icmp_type=136,icmp_code=0 actions=resubmit(,17)
      cookie=0x4000000, duration=730.336s, table=45, n_packets=2, n_bytes=172, priority=40,icmp6,metadata=0x1389000000/0xffff000000,ipv6_src=2001:db8:0:2::/64,icmp_type=136,icmp_code=0 actions=CONTROLLER:65535,resubmit(,17)
      cookie=0x4000000, duration=881.760s, table=45, n_packets=16, n_bytes=1672, priority=0 actions=resubmit(,17)
      stack@openstack1:/home/stack/new/fromgit$ sudo ovs-ofctl -OOpenflow13 dump-flows br-int | grep table=21,
      cookie=0x8000003, duration=735.108s, table=21, n_packets=0, n_bytes=0, priority=138,icmp6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:3::1,icmp_type=128,icmp_code=0 actions=move:NXM_OF_ETH_SRC[]>NXM_OF_ETH_DST[],set_field:fa:16:3e:f9:b7:47>eth_src,move:NXM_NX_IPV6_SRC[]>NXM_NX_IPV6_DST[],set_field:2001:db8:0:3::1>ipv6_src,set_field:129->icmpv6_type,load:0->NXM_OF_IN_PORT[],resubmit(,21)
      cookie=0x8000003, duration=735.108s, table=21, n_packets=0, n_bytes=0, priority=138,icmp6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:2::1,icmp_type=128,icmp_code=0 actions=move:NXM_OF_ETH_SRC[]>NXM_OF_ETH_DST[],set_field:fa:16:3e:47:2a:e8>eth_src,move:NXM_NX_IPV6_SRC[]>NXM_NX_IPV6_DST[],set_field:2001:db8:0:2::1>ipv6_src,set_field:129->icmpv6_type,load:0->NXM_OF_IN_PORT[],resubmit(,21)
      cookie=0x8000003, duration=734.996s, table=21, n_packets=0, n_bytes=0, priority=138,ipv6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:2:f816:3eff:fe43:294 actions=group:150000
      cookie=0x8000003, duration=681.329s, table=21, n_packets=10, n_bytes=1180, priority=138,ipv6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:3:f816:3eff:fecd:7ea5 actions=set_field:0x186a9->tun_id,set_field:fa:16:3e:cd:7e:a5->eth_dst,load:0x200->NXM_NX_REG6[],resubmit(,220)
      cookie=0x8000003, duration=115.418s, table=21, n_packets=0, n_bytes=0, priority=138,ipv6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:2::5050 actions=group:150000
      cookie=0x8000003, duration=735.270s, table=21, n_packets=1, n_bytes=86, priority=74,ipv6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:2::/64 actions=write_metadata:0x1389030d46/0xfffffffffe,goto_table:22
      cookie=0x8000003, duration=681.429s, table=21, n_packets=0, n_bytes=0, priority=74,ipv6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:3::/64 actions=write_metadata:0x138a030d46/0xfffffffffe,goto_table:22
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$

      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$ sudo ovs-ofctl -OOpenflow13 dump-flows br-int | grep table=21,
      cookie=0x8000003, duration=797.378s, table=21, n_packets=10, n_bytes=1180, priority=138,ipv6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:3:f816:3eff:fecd:7ea5 actions=set_field:0x186a9->tun_id,set_field:fa:16:3e:cd:7e:a5->eth_dst,load:0x200->NXM_NX_REG6[],resubmit(,220)
      cookie=0x8000003, duration=797.478s, table=21, n_packets=0, n_bytes=0, priority=74,ipv6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:3::/64 actions=write_metadata:0x138a030d46/0xfffffffffe,goto_table:22
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$ sudo ovs-ofctl -OOpenflow13 dump-flows br-int | grep table=21,
      cookie=0x8000003, duration=906.446s, table=21, n_packets=10, n_bytes=1180, priority=138,ipv6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:3:f816:3eff:fecd:7ea5 actions=set_field:0x186a9->tun_id,set_field:fa:16:3e:cd:7e:a5->eth_dst,load:0x200->NXM_NX_REG6[],resubmit(,220)
      cookie=0x8000003, duration=906.547s, table=21, n_packets=0, n_bytes=0, priority=74,ipv6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:3::/64 actions=write_metadata:0x138a030d46/0xfffffffffe,goto_table:22
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$ sudo ovs-ofctl -OOpenflow13 dump-flows br-int | grep table=45,
      cookie=0x4000000, duration=965.730s, table=45, n_packets=1, n_bytes=70, priority=50,icmp6,metadata=0x1389000000/0xffff000000,icmp_type=133,icmp_code=0 actions=CONTROLLER:65535
      cookie=0x4000000, duration=965.655s, table=45, n_packets=1, n_bytes=86, priority=50,icmp6,metadata=0x1389000000/0xffff000000,icmp_type=135,icmp_code=0,nd_target=2001:db8:0:2::1 actions=CONTROLLER:65535
      cookie=0x4000000, duration=965.655s, table=45, n_packets=1, n_bytes=86, priority=50,icmp6,metadata=0x1389000000/0xffff000000,icmp_type=135,icmp_code=0,nd_target=fe80::f816:3eff:fe47:2ae8 actions=CONTROLLER:65535
      cookie=0x4000000, duration=965.655s, table=45, n_packets=3, n_bytes=258, priority=40,icmp6,metadata=0x1389000000/0xffff000000,ipv6_src=2001:db8:0:2::/64,icmp_type=136,icmp_code=0 actions=CONTROLLER:65535,resubmit(,17)
      cookie=0x4000000, duration=1117.079s, table=45, n_packets=16, n_bytes=1672, priority=0 actions=resubmit(,17)
      stack@openstack1:/home/stack/new/fromgit$ sudo ovs-ofctl -OOpenflow13 dump-flows br-int | grep 5050 --------> VM got deleted by this time
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$ openstack port show vpn6_net_1_port_1
      ------------------------------------------------------------------------------------------------------------------------------------------------------------------+

      Field Value

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

      admin_state_up UP
      allowed_address_pairs ip_address='2001:db8:0:2::5050', mac_address='fa:16:3e:43:02:94'
      binding_host_id openstack1
      binding_profile  
      binding_vif_details has_datapath_type_netdev='False', host_addresses='[u'openstack1']', support_vhost_user='False', uuid='5b4715b8-ce3d-453e-9447-f46b6b682319'
      binding_vif_type ovs
      binding_vnic_type normal
      created_at 2018-07-03T17:53:09Z
      data_plane_status None
      description  
      device_id 7fd7ffb9-017b-4544-8413-153be0e5d23d
      device_owner compute:nova
      dns_assignment None
      dns_name None
      extra_dhcp_opts  
      fixed_ips ip_address='2001:db8:0:2:f816:3eff:fe43:294', subnet_id='68d48d93-80c5-4773-81e6-108a26713d9c'
      id 874d267d-6298-477f-9228-576f4f3b3e6e
      ip_address None
      mac_address fa:16:3e:43:02:94
      name vpn6_net_1_port_1
      network_id 421f7b97-e0f2-4ed6-b0ef-251883776b39
      option_name None
      option_value None
      port_security_enabled True
      project_id 3c684838d1fb4534888b478417e60ed9
      qos_policy_id None
      revision_number 10
      security_group_ids a7df7988-3fcb-416b-84f9-93814d4215a0
      status ACTIVE
      subnet_id None
      tags  
      trunk_details None
      updated_at 2018-07-03T18:14:17Z

      ------------------------------------------------------------------------------------------------------------------------------------------------------------------+
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$ sudo ovs-ofctl -OOpenflow13 dump-flows br-int | grep table=21,
      cookie=0x8000003, duration=246.792s, table=21, n_packets=10, n_bytes=1180, priority=138,ipv6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:3:f816:3eff:fecd:7ea5 actions=set_field:0x186a9->tun_id,set_field:fa:16:3e:cd:7e:a5->eth_dst,load:0x200->NXM_NX_REG6[],resubmit(,220)
      cookie=0x8000003, duration=246.417s, table=21, n_packets=0, n_bytes=0, priority=138,ipv6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:2::5050 actions=group:150003
      cookie=0x8000003, duration=245.859s, table=21, n_packets=0, n_bytes=0, priority=138,ipv6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:2:f816:3eff:fe43:294 actions=group:150003
      cookie=0x8000003, duration=246.849s, table=21, n_packets=0, n_bytes=0, priority=138,icmp6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:2::1,icmp_type=128,icmp_code=0 actions=move:NXM_OF_ETH_SRC[]>NXM_OF_ETH_DST[],set_field:fa:16:3e:47:2a:e8>eth_src,move:NXM_NX_IPV6_SRC[]>NXM_NX_IPV6_DST[],set_field:2001:db8:0:2::1>ipv6_src,set_field:129->icmpv6_type,load:0->NXM_OF_IN_PORT[],resubmit(,21)
      cookie=0x8000003, duration=246.825s, table=21, n_packets=0, n_bytes=0, priority=138,icmp6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:3::1,icmp_type=128,icmp_code=0 actions=move:NXM_OF_ETH_SRC[]>NXM_OF_ETH_DST[],set_field:fa:16:3e:f9:b7:47>eth_src,move:NXM_NX_IPV6_SRC[]>NXM_NX_IPV6_DST[],set_field:2001:db8:0:3::1>ipv6_src,set_field:129->icmpv6_type,load:0->NXM_OF_IN_PORT[],resubmit(,21)
      cookie=0x8000003, duration=246.849s, table=21, n_packets=0, n_bytes=0, priority=74,ipv6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:2::/64 actions=write_metadata:0x1389030d46/0xfffffffffe,goto_table:22
      cookie=0x8000003, duration=246.792s, table=21, n_packets=0, n_bytes=0, priority=74,ipv6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:3::/64 actions=write_metadata:0x138a030d46/0xfffffffffe,goto_table:22
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$ sudo ovs-ofctl -OOpenflow13 dump-flows br-int | grep table=21, | grep 505
      cookie=0x8000003, duration=259.355s, table=21, n_packets=0, n_bytes=0, priority=138,ipv6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:2::5050 actions=group:150003 --> Even without subnet ip
      stack@openstack1:/home/stack/new/fromgit$ sudo ovs-ofctl -OOpenflow13 dump-flows br-int | grep table=21,
      cookie=0x8000003, duration=270.345s, table=21, n_packets=10, n_bytes=1180, priority=138,ipv6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:3:f816:3eff:fecd:7ea5 actions=set_field:0x186a9->tun_id,set_field:fa:16:3e:cd:7e:a5->eth_dst,load:0x200->NXM_NX_REG6[],resubmit(,220)
      cookie=0x8000003, duration=269.970s, table=21, n_packets=0, n_bytes=0, priority=138,ipv6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:2::5050 actions=group:150003
      cookie=0x8000003, duration=269.412s, table=21, n_packets=0, n_bytes=0, priority=138,ipv6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:2:f816:3eff:fe43:294 actions=group:150003
      cookie=0x8000003, duration=270.402s, table=21, n_packets=0, n_bytes=0, priority=138,icmp6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:2::1,icmp_type=128,icmp_code=0 actions=move:NXM_OF_ETH_SRC[]>NXM_OF_ETH_DST[],set_field:fa:16:3e:47:2a:e8>eth_src,move:NXM_NX_IPV6_SRC[]>NXM_NX_IPV6_DST[],set_field:2001:db8:0:2::1>ipv6_src,set_field:129->icmpv6_type,load:0->NXM_OF_IN_PORT[],resubmit(,21)
      cookie=0x8000003, duration=270.378s, table=21, n_packets=0, n_bytes=0, priority=138,icmp6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:3::1,icmp_type=128,icmp_code=0 actions=move:NXM_OF_ETH_SRC[]>NXM_OF_ETH_DST[],set_field:fa:16:3e:f9:b7:47>eth_src,move:NXM_NX_IPV6_SRC[]>NXM_NX_IPV6_DST[],set_field:2001:db8:0:3::1>ipv6_src,set_field:129->icmpv6_type,load:0->NXM_OF_IN_PORT[],resubmit(,21)
      cookie=0x8000003, duration=270.402s, table=21, n_packets=0, n_bytes=0, priority=74,ipv6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:2::/64 actions=write_metadata:0x1389030d46/0xfffffffffe,goto_table:22
      cookie=0x8000003, duration=270.345s, table=21, n_packets=0, n_bytes=0, priority=74,ipv6,metadata=0x30d46/0xfffffe,ipv6_dst=2001:db8:0:3::/64 actions=write_metadata:0x138a030d46/0xfffffffffe,goto_table:22
      stack@openstack1:/home/stack/new/fromgit$ openstack port set --allowed-address ip-address=2001:db8:0:2::5151 874d267d-6298-477f-9228-576f4f3b3e6e
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$
      stack@openstack1:/home/stack/new/fromgit$

      ODL
      opendaylight-user@root>
      ~
      opendaylight-user@root>exception-displayfib-show
      RD Prefix NextHop Label Origin
      -------------------------------------------------------------------
      1:1 2001:db8:0:2::1/128 0.0.0.0 100004 l
      1:1 2001:db8:0:3::1/128 0.0.0.0 100005 l
      1:1 2001:db8:0:3::/64 172.23.108.205 100008 c
      1:1 2001:db8:0:3:f816:3eff:fecd:7ea5/128 172.23.108.205 100009 l
      ~
      opendaylight-user@root>
      opendaylight-user@root>fib-show
      RD Prefix NextHop Label Origin
      -------------------------------------------------------------------
      1:1 2001:db8:0:2::/64 172.23.108.204 100012 c
      1:1 2001:db8:0:2::1/128 0.0.0.0 100004 l
      1:1 2001:db8:0:3::1/128 0.0.0.0 100005 l
      1:1 2001:db8:0:2:0:0:0:5050/128 172.23.108.204 100013 s
      1:1 2001:db8:0:2:f816:3eff:fe43:294/128 172.23.108.204 100011 l
      1:1 2001:db8:0:3::/64 172.23.108.205 100008 c
      1:1 2001:db8:0:3:f816:3eff:fecd:7ea5/128 172.23.108.205 100009 l
      opendaylight-user@root>

      stack@openstack1:~$ virsh list --all
      Id Name State
      ----------------------------------------------------
      162 instance-0000009a running

      stack@openstack1:~$ virsh console 162
      Connected to domain instance-0000009a
      Escape character is ^]

      $ ifconfig
      eth0 Link encap:Ethernet HWaddr FA:16:3E:43:02:94
      inet6 addr: 2001:db8:0:2:f816:3eff:fe43:294/64 Scope:Global
      inet6 addr: fe80::f816:3eff:fe43:294/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
      RX packets:596 errors:0 dropped:143 overruns:0 frame:0
      TX packets:7 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:69009 (67.3 KiB) TX bytes:1070 (1.0 KiB)

      lo Link encap:Local Loopback
      inet addr:127.0.0.1 Mask:255.0.0.0
      inet6 addr: ::1/128 Scope:Host
      UP LOOPBACK RUNNING MTU:16436 Metric:1
      RX packets:12 errors:0 dropped:0 overruns:0 frame:0
      TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0
      RX bytes:1020 (1020.0 B) TX bytes:1020 (1020.0 B)

      $

      stack@openstack2:~$ virsh list --all
      Id Name State
      ----------------------------------------------------
      51 instance-00000099 running

      stack@openstack2:~$ virsh console 51
      Connected to domain instance-00000099
      Escape character is ^]

      $
      $ ifconfig
      eth0 Link encap:Ethernet HWaddr FA:16:3E:CD:7E:A5
      inet6 addr: 2001:db8:0:3:f816:3eff:fecd:7ea5/64 Scope:Global
      inet6 addr: fe80::f816:3eff:fecd:7ea5/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
      RX packets:445 errors:0 dropped:382 overruns:0 frame:0
      TX packets:726 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:49564 (48.4 KiB) TX bytes:85902 (83.8 KiB)

      lo Link encap:Local Loopback
      inet addr:127.0.0.1 Mask:255.0.0.0
      inet6 addr: ::1/128 Scope:Host
      UP LOOPBACK RUNNING MTU:16436 Metric:1
      RX packets:12 errors:0 dropped:0 overruns:0 frame:0
      TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0
      RX bytes:1020 (1020.0 B) TX bytes:1020 (1020.0 B)

      $

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        # Subject Branch Project Status CR V

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            • Assignee:
              somashekar.byrappa Somashekar B
              Reporter:
              rssaravana Saravanakumar s
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              Dates

              • Created:
                Updated:
                Resolved: