NAME

  IP_HL_DecrementIN - Hop Limit Decrement - Intermediate Node

TARGET

  Router

SYNOPSIS

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

INITIALIZATION

  None

TEST PROCEDURE

  Tester                      Target                      Tester
              (Link0)                     (Link1)
    |                           |                           |
    |-------------------------->|                           |
    |   Echo Request to Link0   |                           |
    |      (Hop Limit = 15)     |                           |
    |                           |                           |
    |                           |-------------------------->|
    |                           |   Neighbor Solicitation   |
    |                           |                           |
    |                           |<--------------------------|
    |                           |   Neighbor Advertisement  |
    |                           |                           |
    |                           |-------------------------->|
    |                           |   Echo Request to Link1   |
    |                           |      (Hop Limit = 14)     |
    |                           |                           |
    v                           v                           v

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

  Echo Request to Link0 Data is:

        IPv6 Header
            Version            = 6
            Traffic Class      = 0
            FlowLabel          = 0
            PayloadLength      = 16
            NextHeader         = 58 (ICMPv6)
            HopLimit           = 15
            SourceAddress      = Tester Global Address (Link0)
            DestinationAddress = Tester Global Address (Link1)

        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: Echo Request Received at Link1

        IPv6 Header
            Version             = 6
            Traffic Class       = 0
            FlowLabel           = 0
            PayloadLength       = 16
            NextHeader          = 58 (ICMPv6)
            HopLimit            = 14
            SourceAddress      = Tester Global Address (Link0)
            DestinationAddress = Tester Global Address (Link1)

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

REFERENCE

RFC 2460 - IPv6 Specification