NAME

  HHO_MSB00_IN - Options Processing, Hop-by-Hop Options Header - Intermediate Node (Most Significant Bits 00)

TARGET

  Router

SYNOPSIS

  HHO_MSB00_IN.seq [-tooloption ...] -pkt HHO_MSB00_IN.def
    -tooloption : v6eval tool option

INITIALIZATION

  None

TEST PROCEDURE

  Tester                      Target                      Tester
              (Link0)                     (Link1)
    |                           |                           |
    |-------------------------->|                           |
    |       Echo Request        |                           |
    |                           |                           |
    |                           |-------------------------->|
    |                           |   Neighbor Solicitation   |
    |                           |                           |
    |                           |<--------------------------|
    |                           |   Neighbor Advertisement  |
    |                           |                           |
    |                           |-------------------------->|
    |                           |        Echo Request       |
    |                           |                           |
    v                           v                           v

  1. Send Echo Request to Link0
  2. Wait forwarded Echo Request or NS on Link1
  3. If NS received then send NA, and wait forwarded Echo Request again
  4. Receive forwarded Echo Request

  Echo Request Data is:

        IPv6 Header
            Version            = 6
            Traffic Class      = 0
            FlowLabel          = 0
            PayloadLength      = 16
            NextHeader         = 0 (Hop-by-Hop Options Header)
            SourceAddress      = Tester Global Address (Link0)
            DestinationAddress = Tester Global Address (Link1)

        Hop-by-Hop Options Header
            NextHeader         = 58 (ICMPv6)
            HeaderExtLength    = 0
            OptionType         = 0x07 (Unrecognized Option, Type 00)
            OptDataLength      = 4
            data               = {0, 0, 0, 0}

        ICMP Echo Request
            Type           = 128 (Echo Request)
            Code           = 0
            Checksum       = (auto)
            Identifier     = 0xffff
            SequenceNumber = 1
            PayloadData    = {1, 2, 3, 4, 5, 6, 7, 8}

JUDGEMENT

  PASS: forwarded Echo Request Received
        Unrecognized Option is ignored.

REFERENCE

RFC 2460 - IPv6 Specification