PingOverRouter - check IPv6 Header Basic Items
Router
PingOverRouter.seq [-tooloption ...] -pkt PingOverRouter.def
-tooloption : v6eval tool option
1. Check Link0 Global Address Reachability 2. Check Link1 Global Address Reachability
Tester Target Tester
(Link0) (Link1)
| | |
|-------------------------->| |
| Echo Request to Link0 | |
| | |
| |-------------------------->|
| | Neighbor Solicitation |
| | |
| |<--------------------------|
| | Neighbor Advertisement |
| | |
| |-------------------------->|
| | Echo Request from Link1 |
| | |
| | |
| |<--------------------------|
| | Echo Reply to Link1 |
| | |
|<--------------------------| |
| Neighbor Solicitation | |
| | |
|-------------------------->| |
| Neighbor Advertisement | |
| | |
|<--------------------------| |
| Echo Reply from Link0 | |
| | |
v v v
1. Send Echo Request to Link0 2. Wait Echo Request from Link1 or NS from Link1 3. If NS received then send NA to Link1, and wait Echo Request form Link1 again 4. Receive Echo Request from Link1 5. Send Echo Reply to Link1 6. Wait Echo Reply from Link0 or NS from Link0 7. If NS received then send NA to Link0, and wait Echo Reply form Link0 again 8. Receive Echo Reply from Link0
Echo Request to Link0 Data is:
IPv6 Header
Version = 6
Traffic Class = 0
FlowLabel = 0
PayloadLength = 16
NextHeader = 58 (ICMP)
HopLimit = 64
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}
Neighbor Solicitation packet's IP source Address selection may be:
- Link Local Address
- Global Address
This test IS NOT the Neighbor Discovery test, so admit both implementation.
PASS: Echo Reply Received from Link0
IPv6 Header
Version = 6
Traffic Class = 0
FlowLabel = 0
PayloadLength = 16
NextHeader = 58 (ICMP)
HopLimit = 63 (decremented)
SourceAddress = Tester Global Address (Link1)
DestinationAddress = Tester Global Address (Link0)
ICMP Echo Reply
Type = 129 (Echo Reply)
Code = 0
Checksum = (auto)
Identifier = 0xffff (same as Echo Request)
SequenceNumber = 1 (same as Echo Request)
PayloadData = {1,2,3,4,5,6,7,8} (same as Echo Request)
RFC2460
3. IPv6 Header Format
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |Version| Traffic Class | Flow Label | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Payload Length | Next Header | Hop Limit | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | + + | | + Source Address + | | + + | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | + + | | + Destination Address + | | + + | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Version 4-bit Internet Protocol version number = 6.
Traffic Class 8-bit traffic class field. See section 7.
Flow Label 20-bit flow label. See section 6.
Payload Length 16-bit unsigned integer. Length of the IPv6
payload, i.e., the rest of the packet following
this IPv6 header, in octets. (Note that any
extension headers [section 4] present are
considered part of the payload, i.e., included
in the length count.)
Next Header 8-bit selector. Identifies the type of header
immediately following the IPv6 header. Uses the
same values as the IPv4 Protocol field [RFC-1700
et seq.].
Hop Limit 8-bit unsigned integer. Decremented by 1 by
each node that forwards the packet. The packet
is discarded if Hop Limit is decremented to
zero.
Source Address 128-bit address of the originator of the packet.
See [ADDRARCH].
Destination Address 128-bit address of the intended recipient of the
packet (possibly not the ultimate recipient, if
a Routing header is present). See [ADDRARCH]
and section 4.4.
perldoc V6evalTool