NAME

routerSendUnsolRaDefault - verify a host sending valid RSs

TARGET

  Router Only

SYNOPSIS

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

INITIALIZATION

Start NUT advertising RAs whose parameters are as same as those.

TEST PROCEDURE

routerSendUnsolRaDefault verifies that a NUT send valid RSs by the rules.

  - A host sends valid RSs whose interval is
    MAX_INITIAL_RTR_ADVERT_INTERVAL(16 sec).

  - A host sends the RSs at the most
    MAX_INITIAL_RTR_ADVERTISEMENTS (3) times.

JUDGMENT

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


  2. The interval between RAs is MAX_INITIAL_RTR_ADVERT_INTERVAL(16 sec).
     Because MinRtrAdvInterval(600*0.33 sec) is greater than
     MAX_INITIAL_RTR_ADVERT_INTERVAL(16 sec).


  3. NUT throws the RAs at the most MAX_INITIAL_RTR_ADVERTISEMENTS (3) times.

TERMINATION

N/A

NOTE

TBD

REFERENCE

6.2.4.  Sending Unsolicited Router Advertisements


   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.