#!/usr/bin/perl
#
# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
# Yokogawa Electric Corporation.
# All rights reserved.
#
# Redistribution and use of this software in source and binary
# forms, with or without modification, are permitted provided that
# the following conditions and disclaimer are agreed and accepted
# by the user:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with
# the distribution.
#
# 3. Neither the names of the copyrighters, the name of the project
# which is related to this software (hereinafter referred to as
# "project") nor the names of the contributors may be used to
# endorse or promote products derived from this software without
# specific prior written permission.
#
# 4. No merchantable use may be permitted without prior written
# notification to the copyrighters.
#
# 5. The copyrighters, the project and the contributors may prohibit
# the use of this software at any time.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHTERS, THE PROJECT AND
# CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING
# BUT NOT LIMITED THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE, ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHTERS, THE PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# $TAHI: ct/nd.p2/v6LC_2_2_17_C.seq,v 1.2 2006/04/28 02:07:28 akisada Exp $
#
########################################################################
use rdisc;
BEGIN {}
END {}
if($V6evalTool::NutDef{'Type'} ne 'host') {
exitHostOnly($Link0);
#NOTREACHED
}
vCapture($Link0);
$pktdesc{'local_ra'} =
' Send RA w/ SLL (diff): '.
'TR1 (link-local) -> all-nodes multicast address';
unless(v6LC_2_2_17_C($Link0)) {
exitFail($Link0);
#NOTREACHED
}
exitPass($Link0);
#NOTREACHED
#
# perldoc
#
########################################################################
__END__
=head1 NAME
=begin html
v6LC_2_2_17_C - Router Advertisement Processing, IsRouter flag (RA with different Source Link-layer option as cached)
=end html
=begin html
=end html
=head1 TARGET
=begin html
Host
=end html
=head1 TOPOLOGY
=begin html
TN2
|
----+-------+--- LinkX
|
TR1 HUT
| |
----+-------+--- Link0
| Link0 |
global |
3ffe:501:ffff:100::/64 |
| link-local |
fe80::/64 |
| LinkX |
global |
3ffe:501:ffff::/64 |
| link-local |
fe80::/64 |
| TR1 |
global |
3ffe:501:ffff:100:200:ff:fe00:a0a0 |
| link-local |
fe80::200:ff:fe00:a0a0 |
| ether |
00:00:00:00:a0:a0 |
| HUT |
global |
3ffe:501:ffff:100::<NutDef.Link0_addr> |
| link-local |
fe80::<NutDef.Link0_addr> |
| ether |
<NutDef.Link0_addr> |
| TN2 |
global |
3ffe:501:ffff::<TnDef.Link0_addr> |
| link-local |
fe80::<TnDef.Link0_addr> |
| ether |
<TnDef.Link0_addr> |
=end html
=head1 SETUP
=begin html
none
=end html
=head1 TEST PROCEDURE
=begin html
Verify that a host properly updates the IsRouter flag in its Neighbor Cache upon receipt of a Router Advertisement.
TN2 TR1 HUT
| | |
| | ----> | Echo Request
| | <-- | NS (multicast) [Judgment #1]
| | ----> | NA (R=0)
| | <---- | Echo Reply [Judgment #2]
| | |
| | --> | RA
| | |
| | * Wait (MAX_RTR_SOLICITATION_DELAY + RetransTimer * DupAddrDetectTransmits)
| | |
| ------------> | Echo Request
| <------------ | Echo Reply [Judgment #3]
| | |
V V V
1. Send Echo Request
IPv6 header
source = TR1 (link-local)
destination = HUT (link-local)
Echo Request
2. Observe NS
IPv6 header
hop limit = 255
source = RUT (link-local)
destination = TR1 (solicited-node multicast address)
NS
target = TR1 (link-local)
SLL option
3. Send NA
IPv6 header
hop limit = 255
source = TR1 (link-local)
destination = HUT (link-local)
NA
R = 0
S = 1
O = 1
target = TR1 (link-local)
TLL option
4. Observe Echo Reply
IPv6 header
source = HUT (link-local)
destination = TR1 (link-local)
Echo Reply
5. Send RA
IPv6 header
hop limit = 255
source = TR1 (link-local)
destination = all-nodes multicast address
RA
cur hop limit = 64
M = 0
O = 0
router lifetime = 1800
reachable time = 0
retrans timer = 0
SLL option
address = TRY (ether)
Prefix Information option
prefix length = 64
L = 1
A = 1
valid Lifetime = 2592000
preferred lifetime = 604800
prefix = 3ffe:501:ffff:100::
6. Wait (MAX_RTR_SOLICITATION_DELAY + RetransTimer * DupAddrDetectTransmits)
Host constants:
MAX_RTR_SOLICITATION_DELAY: 1 second
Node constants:
RETRANS_TIMER : 1,000 milliseconds
Host Variables:
RetransTimer
Default : RETRANS_TIMER milliseconds
Node Variables:
DupAddrDetectTransmits
Default : 1
7. Send Echo Request
IPv6 header
source = TN2 (global)
destination = HUT (global)
Echo Request
8. Observe Echo Reply
IPv6 header
source = HUT (global)
destination = TN2 (global)
Echo Reply
=end html
=head1 JUDGEMENT
=begin html
[Judgment #1] The HUT should create a Neighbor Cache Entry for TR1 and set the state of the Entry to INCOMPLETE. The HUT should send a multicast Neighbor Solicitation to TR1.
[Judgment #2] The HUT should update the state of TR1's NCE to REACHABLE and record TR1's Link-layer Address. Because the HUT is in state REACHABLE, after receiving the earlier Echo Request from TR1, the HUT should send an Echo Reply using the received Link-Layer Address. After DELAY_FIRST_PROBE_TIME, the HUT should not send a unicast Neighbor Solicitation to TR1.
[Judgment #3] The HUT must not change the state of the TN1's NCE. After receiving the Echo Request from TR1, the HUT should send an Echo Reply using the received Global Address.
=end html
=head1 CLEANUP
=begin html
The Cleanup procedure should cause the NUT to transition Neighbor Cache entries created in this test to state INCOMPLETE and remove any entries from its Default Router and Prefix Lists.
TR1 HUT
| |
| --> | NA
| |
| ----> | Echo Request
| <---- | Echo Reply
| |
* | Wait (DELAY_FIRST_PROBE_TIME)
| |
| <---- | NS
| <---- | NS
| <---- | NS
| |
| --> | RA
| |
V V
1. Send NA w/ TLL (diff)
IPv6 header
hop limit = 255
source = TR1 (link-local)
destination = all-nodes multicast address
NA
R = 1
S = 0
O = 1
target = TR1 (link-local)
TLL option
address = TRX (ether)
2. Send Echo Request
IPv6 header
source = TR1 (link-local)
destination = HUT (link-local)
Echo Request
3. Observe Echo Reply
IPv6 header
source = HUT (link-local)
destination = TR1 (link-local)
Echo Reply
4. Wait (DELAY_FIRST_PROBE_TIME)
Node constants:
DELAY_FIRST_PROBE_TIME: 5 seconds
5. Observe MAX_UNICAST_SOLICIT NSs
IPv6 header
hop limit = 255
source = HUT (link-local)
destination = TR1 (link-local)
NS
target = TR1 (link-local)
SLL option
Node constants:
MAX_UNICAST_SOLICIT: 3 transmissions
6. Send RA
IPv6 header
hop limit = 255
source = TR1 (link-local)
destination = all-nodes multicast address
RA
cur hop limit = 64
M = 0
O = 0
router lifetime = 0
reachable time = 30000
retrans timer = 1000
Prefix Information option
prefix length = 64
L = 1
A = 1
valid Lifetime = 0
preferred lifetime = 0
prefix = 3ffe:501:ffff:100::
=end html
=cut
# =head1 REFERENCE
#
# =begin html
#
#
# 6.3.4. Processing Received Router Advertisements
#
#
# After extracting information from the fixed part of the Router
# Advertisement message, the advertisement is scanned for valid
# options. If the advertisement contains a Source Link-Layer Address
# option the link-layer address SHOULD be recorded in the Neighbor
# Cache entry for the router (creating an entry if necessary) and the
# IsRouter flag in the Neighbor Cache entry MUST be set to TRUE. If no
# Source Link-Layer Address is included, but a corresponding Neighbor
# Cache entry exists, its IsRouter flag MUST be set to TRUE. The
# IsRouter flag is used by Neighbor Unreachability Detection to
# determine when a router changes to being a host (i.e., no longer
# capable of forwarding packets). If a Neighbor Cache entry is created
# for the router its reachability state MUST be set to STALE as
# specified in Section 7.3.3. If a cache entry already exists and is
# updated with a different link-layer address the reachability state
# MUST also be set to STALE.
#
#
#
# =end html
#
=pod
=head1 REFERENCE
=begin html
RFC 2461 - Neighbor Discovery for IPv6
=end html
=cut