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  1. CORD
  2. CORD-2816

Captured packets with "IPv6 version error" in Segment Routing link-up test

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    Details

    • Type: Bug
    • Status: Resolved (View Workflow)
    • Priority: Medium
    • Resolution: Cannot Reproduce
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: Fabric
    • Labels:
    • Story Points:
      3

      Description

      In Comcast topology, after killing and recovering all links to spine101, we see icmp request packets sent out from leaf-1 (of:0000000000000001) with errors:

      MPLS (label 2 (IPv6 explicit NULL), exp 0, [S], ttl 64) IP6 version error: 4 != 6
      

      Path:

      onos> t3-troubleshoot  -s 10.1.0.1 -sp of:0000000000000001/3 -sm 00:AA:00:00:00:03 -d 10.2.30.1 -dm 00:00:00:00:00:01
      Tracing packet: [IN_PORT:3, ETH_DST:00:00:00:00:00:01, ETH_SRC:00:AA:00:00:00:03, ETH_TYPE:ipv4, VLAN_VID:None, IPV4_SRC:10.1.0.1/32, IPV4_DST:10.2.30.1/32]
      Paths
      [of:0000000000000001/3, of:0000000000000001/2, of:0000000000000102/1, of:0000000000000102/4, of:0000000000000003/3, of:0000000000000003/6]
      [of:0000000000000001/3, of:0000000000000001/2, of:0000000000000102/1, of:0000000000000102/5, of:0000000000000003/4, of:0000000000000003/6]
      [of:0000000000000001/3, of:0000000000000001/2, of:0000000000000102/1, of:0000000000000102/2, of:0000000000000002/3, of:0000000000000002/7]
      [of:0000000000000001/3, of:0000000000000001/2, of:0000000000000102/1, of:0000000000000102/3, of:0000000000000002/4, of:0000000000000002/7]
      [of:0000000000000001/3, of:0000000000000001/1, of:0000000000000101/1, of:0000000000000101/5, of:0000000000000003/2, of:0000000000000003/6]
      [of:0000000000000001/3, of:0000000000000001/1, of:0000000000000101/1, of:0000000000000101/4, of:0000000000000003/1, of:0000000000000003/6]
      Result:
      Reached required destination Host of:0000000000000003/6
      Reached required destination Host of:0000000000000003/6
      Reached required destination Host of:0000000000000002/7
      Reached required destination Host of:0000000000000002/7
      Reached required destination Host of:0000000000000003/6
      Reached required destination Host of:0000000000000003/6
      Group GroupId{id=0x7000013b}has no buckets
      

      Flows and groups on of:0000000000000001:

      Device of:0000000000000001
      Input from of:0000000000000001/3
      Flows 5
          ADDED, bytes=340646, packets=3941, table=0, priority=0, selector=[], treatment=[transition=TABLE:10]
          ADDED, bytes=40446, packets=391, table=10, priority=32768, selector=[IN_PORT:3, VLAN_VID:None], treatment=[immediate=[VLAN_PUSH:vlan, VLAN_ID:10], transition=TABLE:20]
          ADDED, bytes=38454, packets=365, table=20, priority=32768, selector=[IN_PORT:3, ETH_DST:00:00:00:00:00:01, ETH_TYPE:ipv4, VLAN_VID:10], treatment=[transition=TABLE:30]
          ADDED, bytes=29204, packets=298, table=30, priority=48010, selector=[ETH_TYPE:ipv4, IPV4_DST:10.2.30.0/24], treatment=[deferred=[GROUP:0x7000002f], transition=TABLE:60]
          ADDED, bytes=66176, packets=566, table=60, priority=0, selector=[], treatment=[immediate=[NOACTION]]
      Groups
         id=0x7000002f, state=ADDED, type=SELECT, bytes=28616, packets=292, appId=org.onosproject.segmentrouting, referenceCount=2
             id=0x7000002f, bucket=1, bytes=196, packets=2, actions=[GROUP:0x9200001e]
             id=0x7000002f, bucket=2, bytes=0, packets=0, actions=[GROUP:0x9200002c]
             id=0x7000002f, bucket=3, bytes=196, packets=2, actions=[GROUP:0x920001f4]
             id=0x7000002f, bucket=4, bytes=28224, packets=288, actions=[GROUP:0x920001f7]
         id=0x920001f4, state=ADDED, type=INDIRECT, bytes=196, packets=2, appId=org.onosproject.segmentrouting, referenceCount=0
             id=0x920001f4, bucket=1, bytes=196, packets=2, actions=[VLAN_POP, MPLS_PUSH:mpls_unicast, MPLS_LABEL:3, GROUP:0x900001f2, VLAN_PUSH:vlan, VLAN_ID:4095]
         id=0x900001f2, state=ADDED, type=INDIRECT, bytes=196, packets=2, appId=org.onosproject.segmentrouting, referenceCount=0
             id=0x900001f2, bucket=1, bytes=196, packets=2, actions=[ETH_DST:00:00:00:00:01:01, ETH_SRC:00:00:00:00:00:01, VLAN_ID:4094, GROUP:0xffe0001]
         id=0xffe0001, state=ADDED, type=INDIRECT, bytes=34832, packets=338, appId=org.onosproject.segmentrouting, referenceCount=0
             id=0xffe0001, bucket=1, bytes=34832, packets=338, actions=[VLAN_POP, OUTPUT:1]
      Outgoing Packet DefaultTrafficSelector{criteria=[IN_PORT:3, ETH_DST:00:00:00:00:01:01, ETH_SRC:00:00:00:00:00:01, ETH_TYPE:mpls_unicast, VLAN_VID:None, IPV4_SRC:10.1.0.1/32, IPV4_DST:10.2.30.1/32, MPLS_LABEL:3, MPLS_BOS:true]}
         id=0x7000002f, state=ADDED, type=SELECT, bytes=28616, packets=292, appId=org.onosproject.segmentrouting, referenceCount=2
             id=0x7000002f, bucket=1, bytes=196, packets=2, actions=[GROUP:0x9200001e]
             id=0x7000002f, bucket=2, bytes=0, packets=0, actions=[GROUP:0x9200002c]
             id=0x7000002f, bucket=3, bytes=196, packets=2, actions=[GROUP:0x920001f4]
             id=0x7000002f, bucket=4, bytes=28224, packets=288, actions=[GROUP:0x920001f7]
         id=0x920001f7, state=ADDED, type=INDIRECT, bytes=28224, packets=288, appId=org.onosproject.segmentrouting, referenceCount=0
             id=0x920001f7, bucket=1, bytes=28224, packets=288, actions=[VLAN_POP, MPLS_PUSH:mpls_unicast, MPLS_LABEL:2, GROUP:0x900001f5, VLAN_PUSH:vlan, VLAN_ID:4095]
         id=0x900001f5, state=ADDED, type=INDIRECT, bytes=28224, packets=288, appId=org.onosproject.segmentrouting, referenceCount=0
             id=0x900001f5, bucket=1, bytes=28224, packets=288, actions=[ETH_DST:00:00:00:00:01:01, ETH_SRC:00:00:00:00:00:01, VLAN_ID:4094, GROUP:0xffe0001]
         id=0xffe0001, state=ADDED, type=INDIRECT, bytes=34832, packets=338, appId=org.onosproject.segmentrouting, referenceCount=0
             id=0xffe0001, bucket=1, bytes=34832, packets=338, actions=[VLAN_POP, OUTPUT:1]
      Outgoing Packet DefaultTrafficSelector{criteria=[IN_PORT:3, ETH_DST:00:00:00:00:01:01, ETH_SRC:00:00:00:00:00:01, ETH_TYPE:mpls_unicast, VLAN_VID:None, IPV4_SRC:10.1.0.1/32, IPV4_DST:10.2.30.1/32, MPLS_LABEL:2, MPLS_BOS:true]}
      Output through of:0000000000000001/1
      

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            Unassigned
            Reporter:
            You You Wang (Inactive)
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              Dates

              Created:
              Updated:
              Resolved:

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