EX_OptProcessingOrder_11 - Options Processing Order
(First Option has Most Significant Bits 00, Next has Most Significant Bits 11)
Host and Router
None
Verify that a node properly procesesthe options in a single hheader in the order of occurrence.
TN NUT
| |
|-------------------------->|
| Echo Request |
| |
| |
|<--------------------------|
| ICMP Error |
| |
v v
1. TN transmits an Echo Request that has a Destination options header with four unknown Options.
The Optins Types are 7, 199, 71, and 135.
2. Observe the packets transmitted by the NUT.
Echo Request Data is:
IPv6 Header
Version = 6
Traffic Class = 0
FlowLabel = 0
PayloadLength = 48
NextHeader = 0 (Hop-by-Hop Options Header)
SourceAddress = TN Link Local Address
DestinationAddress = NUT Link Local Address
Destination Options Header
NextHeader = 58 (ICMPv6)
HeaderExtLength = 3
OptionType = 0x07 (Unrecognized Option, Type 00)
OptDataLength = 4
data = {0, 0, 0, 0}
OptionType = 0xc7 (Unrecognized Option, Type 11)
OptDataLength = 6
data = {0, 0, 0, 0, 0, 0}
OptionType = 0x47 (Unrecognized Option, Type 01)
OptDataLength = 6
data = {0, 0, 0, 0, 0, 0}
OptionType = 0x87 (Unrecognized Option, Type 10)
OptDataLength = 6
data = {0, 0, 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}
PASS: The NUT must send an ICMPv6 Parameter Problem message to TN.
THe Code field must be 2(unrecognized IPv6 Option encountered).
The Pointer field must be 0x30(offset of the Option Type field of the second option).
The NUT must discard the Echo Request sent by TN and must not send a Reply.
IPv6 Header
Version = 6
Traffic Class = 0
FlowLabel = 0
PayloadLength = 96
NextHeader = 58 (ICMPv6)
SourceAddress = NUT Link Local Address
Destination Address = TN Link Local Address
ICMP Error
Type = 4 (Parameter Problem)
Code = 2 (unrecognized IPv6 option encountered)
Checksum = (auto)
Pointer = 48 (Offset to Option Type field of 2nd option)
PayloadData = (Sent Packet)
Common Test Cleanup
perldoc V6evalTool