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Date: Mon, 4 Feb 2008 16:51:40 +0900
From: Yukiyo Akisada <akisada@tahi.org>
Subject: [users:00541] Re: Self 1.4.9 ND # 143
To: Yinghui Yao <Yinghui.Yao@alcatel-lucent.com>
Cc: users@tahi.org
Message-Id: <20080204165140.b798ac6e.akisada@tahi.org>
In-Reply-To: <47A3A2E6.1050900@alcatel-lucent.com>
References: <47A3A2E6.1050900@alcatel-lucent.com>
X-Mail-Count: 00541

Hi, Yao.

This is the same answer with "Subject: [users:00530] Self_Test_1.4.9 ND #8".
The router must use the same value of AdvReachableTime as his own BaseReachableTime.

RFC 4861 says,

    6.2.1.  Router Configuration Variables
    ------------------------------------------------------------------------
    2456    The above variables contain information that is placed in outgoing
    2457    Router Advertisement messages.  Hosts use the received information to
    2458    initialize a set of analogous variables that control their external
    2459    behavior (see Section 6.3.2).  Some of these host variables (e.g.,
    2460    CurHopLimit, RetransTimer, and ReachableTime) apply to all nodes
    2461    including routers.  In practice, these variables may not actually be 
    2462    present on routers, since their contents can be derived from the
    2471    variables described above.  However, external router behavior MUST be
    2472    the same as host behavior with respect to these variables.  In
    2473    particular, this includes the occasional randomization of the
    2474    ReachableTime value as described in Section 6.3.2.

Please see from line 2459.

Thanks,


On Fri, 01 Feb 2008 15:53:26 -0700
Yinghui Yao <Yinghui.Yao@alcatel-lucent.com> wrote:

> Hi,
> 
> I think this is an invalid test. TAHI is mistaking ReachableTime with 
> AdvReachableTime. The test asks the user to send RA with rltime 10000, 
> this should only affect the value in RA packet. For the router itself, 
> it would still use ReachableTime (calculated from BaseReachableTime) to 
> time its ND entries out. Please give me some comments.
> 
> Thanks,
> Yinghui Yao
> Alcatel-Lucent
> 
> 


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Yukiyo Akisada <akisada@tahi.org>