NAME

routerSendUnsolRaDefault2 - verify a host sending valid RSs

TARGET

  Router Only

SYNOPSIS

  routerSendUnsolRaDefault2.seq [-tooloption ...] -p routerSendUnsolRaDefault2.def

INITIALIZATION

Start NUT advertising RAs whose parameters are as same as those except the followings:

MaxRtrAdvInterval:7
MinRtrAdvInterval:10

TEST PROCEDURE

routerSendUnsolRaDefault2 verifies that a NUT send valid RAs by the roules. The interval of RAs is between 7 sec. and 10 sec.

JUDGMENT

  1. NUT throw valid RAs:
     - whoes parametser are as same as those.
     - that may contain a source link-layer optoin.
     - that may contain a MTU option.
     - that may contain a Prefix optoin.


  2. The interval of RAs is between 7 sec. and 10 sec.

TERMINATION

N/A

NOTE

TBD

REFERENCE

6.2.4.  Sending Unsolicited Router Advertisements


   Unsolicited Router Advertisements are not strictly periodic: the
   interval between subsequent transmissions is randomized to reduce the
   probability of synchronization with the advertisements from other
   routers on the same link [SYNC].  Each advertising interface has its
   own timer.  Whenever a multicast advertisement is sent from an
   interface, the timer is reset to a uniformly-distributed random value
   between the interface's configured MinRtrAdvInterval and
   MaxRtrAdvInterval; expiration of the timer causes the next
   advertisement to be sent and a new random value to be chosen.


   For the first few advertisements (up to
   MAX_INITIAL_RTR_ADVERTISEMENTS) sent from an interface when it
   becomes an advertising interface, if the randomly chosen interval is
   greater than MAX_INITIAL_RTR_ADVERT_INTERVAL, the timer SHOULD be set
   to MAX_INITIAL_RTR_ADVERT_INTERVAL instead.  Using a smaller interval
   for the initial advertisements increases the likelihood of a router
   being discovered quickly when it first becomes available, in the
   presence of possible packet loss.