#!/usr/bin/perl # # $Intap$ # $TINY: LLA_DADSuccess.seq,v 1.7 2002/03/05 03:04:55 masaxmasa Exp $ # ######################################################################## BEGIN { $V6evalTool::TestVersion = '$Name: $ '; } use V6evalTool; use SAA; #------------------------------------------------------ #----- get sequence arguments #------------------------------------------------------ $howto_initNUT="none"; foreach (@ARGV) { # How to configure address of NUT? # sample: boot, ra, manual+_GLOBAL0A0N_UCAST /^addrconf=(\S+)/ && do {$SAA::howto_addrconf=$1; next; }; # How to initialize NUT? # sample: none, DADSuccess_boot, DADFail_boot /^init=(\S+)/ && do {$howto_initNUT=$1; next; }; # Sequence debug options # sample: qR /^sd=(\S+)/ && do {$seqdebugopt=$1; next; }; seqERROR("Unknown sequence option '$_'"); } #------------------------------------------------------ #----- test condition $IF=Link0; # network interface ########################################################## #----- Check Target Type $type=$V6evalTool::NutDef{Type}; if($type eq host) { vCPP('-DRFLAG=0'); } if($type eq router) { vCPP('-DRFLAG=1'); } #----- Preparetion vCapture($IF); seqPrepareLLA($IF, $V6evalTool::NutDef{System}); #----- initialize NUT vLog("*** Target initialization phase ***"); if($V6evalTool::NutDef{System} ne "manual"){ vSleep($SAA::test_interval); } $rret=vRemote("reboot_async.rmt","","timeout=$SAA::wait_rebootcmd"); vLog("reboot_async.rmt returned status $rret"); #----- start Capturing vLog("*** Target testing phase ***"); vClear($IF); #----- wait a DAD NS coming from NUT %ret=vRecv($IF,$SAA::wait_dadns{$SAA::howto_addrconf},0,$count,DADNS_from_NUT); #----- if received frame is a DAD NS if( $ret{status} == 0) { vLog("TN received the DAD NS sent from NUT."); if($SAA::DupAddrDetectTransmits == 0) { vLog("But DupAddrDetectTransmits == 0"); seqNG(); }else{ vSleep($SAA::wait_addrconf); if( seqCheckNUTAddrConfiguredDAD($IF) eq TRUE ) { seqOK(); }else{ vLog("NUT sent DAD NS but not responds to DAD NS to Same address."); seqNG(); } } } elsif( $ret{status} == 1 ) { #----timeout vLog("TN received no DAD NS sent from NUT. It seems that NUT doesn't perform DAD process."); #----- check if NUT's address is configured vSleep($SAA::wait_addrconf); if (seqCheckNUTAddrConfiguredDAD($IF) eq TRUE) { vLog('Without DAD, NUT assigned the address to the interface.'); if ($SAA::DupAddrDetectTransmits == 0) { vLog("Because DupAddrDetectTransmits == 0"); seqOK(); }else{ seqNG(); } }else{ vLog("NUT's interface is down or in strange state."); seqNG(); } } #----- error if( $ret{status} != 0 ) { seqERROR(vErrmsg(%ret)); #exit } #end ######################################################################## __END__ =head1 NAME LLA_DADSuccess - check normal DAD process that should succeed =head1 TARGET All Node =head1 SYNOPSIS LLA_DADSuccess.seq [-tooloption ...] -pkt [addrconf=] -tooloption : v6eval tool option : packet definition file (v6eval tool option) : how to configure address on NUT; boot/reboot =begin html 
 detail of v6eval tool option: see perldoc V6evalTool.pm, perldoc V6evalRemote.pm
=end html =head1 INITIALIZATION =begin html 
 Reboot NUT or Initialize interface of NUT or Initialize IPv6 stack of NUT.
=end html =head1 TEST PROCEDURE =over 1 =item Test for Unicast address configuration The following tests are prepared in this test package. See INDEX file. B NUT performs DAD for its Link-local unicast address made by stateless address autoconfiguration. B TN NUT --------------------------------- Initialize NUT NUT configures address (reboot or interface initialization etc...) TN wait the DAD NS sent from NUT <=== Judgement #1: DAD NS ======= name: DADNS_from_NUT Wait for 5+DupAddrDetectTransmits*(RetransTimer/1000)[sec] Check if NUT's address is configured ==== Action #1: DAD NS =========> name: DADNS_from_TN <=== Judgement #2: DAD NA ======= name: DADNA_from_NUT =back 1 =head1 JUDGEMENT =over 1 =item Test for Link-local Unicast address autoconfiguration B B Judgement #1. NUT MUST transmit DAD NS for its autoconfigured Link-local address. name: DADNS_from_NUT src: ::0 dst: solnode[NUT's tentative Link-local] TargetAddress: NUT's tentative Link-local Action #1. TN transmits DAD NS to check if NUT's address is configured name: DADNS_from_TN src: ::0 dst: solnode[NUT's Link-local] TargetAddress: NUT's Link-local Judgement #2. NUT MUST transmit DAD NA for its autoconfigured Link-local address. name: DADNA_from_NUT, DADNA_from_NUT_woTLL src: NUT's Link-local dst: allnode TargetAddress: NUT's Link-local RFlag: 0 ( if NUT is a Router then 1) SFlag: 0 OFlag: 1 TLLOPT: NUT's MAC address =back 1 =head1 REFERENCE =begin html 
RFC2462


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5.3.  Creation of Link-Local Addresses


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   A link-local address is formed by prepending the well-known link-
   local prefix FE80::0 [ADDR-ARCH] (of appropriate length) to the
   interface identifier. If the interface identifier has a length of N
   bits, the interface identifier replaces the right-most N zero bits of
   the link-local prefix.  If the interface identifier is more than 118
   bits in length, autoconfiguration fails and manual configuration is
   required. Note that interface identifiers will typically be 64-bits
   long and based on EUI-64 identifiers as described in [ADDR-ARCH].


   A link-local address has an infinite preferred and valid lifetime; it
   is never timed
   out.


5.4.  Duplicate Address Detection


   Duplicate Address Detection is performed on unicast addresses prior
   to assigning them to an interface whose DupAddrDetectTransmits
   variable is greater than zero. Duplicate Address Detection MUST take
   place on all unicast addresses, regardless of whether they are
   obtained through stateful, stateless or manual configuration, with
   the exception of the following cases:


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5.4.3.  Receiving Neighbor Solicitation Messages


   On receipt of a valid Neighbor Solicitation message on an interface,
   node behavior depends on whether the target address is tentative or
   not.  If the target address is not tentative (i.e., it is assigned to
   the receiving interface), the solicitation is processed as described
   in [DISCOVERY].  If the target address is tentative, and the source
   address is a unicast address, the solicitation's sender is performing
   address resolution on the target; the solicitation should be silently
   ignored.  Otherwise, processing takes place as described below. In
   all cases, a node MUST NOT respond to a Neighbor Solicitation for a
   tentative address.


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RFC2461




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7.2.4.  Sending Solicited Neighbor Advertisements


   A node sends a Neighbor Advertisement in response to a valid Neighbor
   Solicitation targeting one of the node's assigned addresses.  The
   Target Address of the advertisement is copied from the Target Address
   of the solicitation.  If the solicitation's IP Destination Address is
   not a multicast address, the Target Link-Layer Address option MAY be
   omitted; the neighboring node's cached value must already be current
   in order for the solicitation to have been received.  If the
   solicitation's IP Destination Address is a multicast address, the
   Target Link-Layer option MUST be included in the advertisement.
   Furthermore, if the node is a router, it MUST set the Router flag to
   one; otherwise it MUST set the flag to zero.


   If the Target Address is either an anycast address or a unicast
   address for which the node is providing proxy service, or the Target
   Link-Layer Address option is not included, the Override flag SHOULD
   be set to zero.  Otherwise, the Override flag SHOULD be set to one.
   Proper setting of the Override flag ensures that nodes give
   preference to non-proxy advertisements, even when received after
   proxy advertisements, and also ensures that the first advertisement
   for an anycast address "wins".


   If the source of the solicitation is the unspecified address, the
   node MUST set the Solicited flag to zero and multicast the
   advertisement to the all-nodes address.  Otherwise, the node MUST set
   the Solicited flag to one and unicast the advertisement to the Source
   Address of the solicitation.


   If the Target Address is an anycast address the sender SHOULD delay
   sending a response for a random time between 0 and
   MAX_ANYCAST_DELAY_TIME seconds.
   Because unicast Neighbor Solicitations are not required to include a
   Source Link-Layer Address, it is possible that a node sending a
   solicited Neighbor Advertisement does not have a corresponding link-
   layer address for its neighbor in its Neighbor Cache.  In such
   situations, a node will first have to use Neighbor Discovery to
   determine the link-layer address of its neighbor (i.e, send out a
   multicast Neighbor Solicitation).


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=end html =head1 SEE ALSO =begin html 
 detail of v6eval tool option: see perldoc V6evalTool.pm, perldoc V6evalRemote.pm
=end html =cut