Re:[pim] Question about Assert Cancel

["Rajgopalan R S" <rs.rajgopalan at gmail.com>]

Hi,

 

   The assert state machine handles this scenario in a different way. When pim is disabled on the interface a Hello with a holdtime of zero is sent on that interface. When the Assert Loser finds that the neighbor liveness of the current winner is off, the assert state is deleted and the assert loser moves into the NO-INFO state. This is explained in the draft in section 4.6.1 which I have pasted below for your reference

 

Current Winner's GenID Changes or NLT Expires

The Neighbor Liveness Timer associated with the current winner expires or we receive

a Hello message from the current winner reporting a different GenID from the one it

previously reported. This indicates that the current winner's interface or router has

gone down (and may have come back up), and so we must assume it no longer knows

it was the winner. We transition to the NoInfo state, deleting this (S,G) assert

information (action A5 below).

A5:

Delete assert info (AssertWinner(S,G,I) and AssertWinnerMetric(S,G,I) will then

return their default values).

 

 

Best Regards,

Rajgopalan

• To: pim at ietf.org
• Subject: [pim] Question about Assert Cancel
• From: 황선영 <syhwang at samsung.com>
• Date: Thu, 18 May 2006 19:19:22 +0900
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---

Hello all,

 

I have a question about sending assert cancel.

 

 

                 Source
                   |
                  R1 (Upstream)

                   |
                   |
      +------- Network 1-------+

      |                        |
      |                        |
     DUT                      R2 
(Current (S,G) AssertWinner)    |
      |                        |
      +------- Network 2-------+
      |                        |
  receiver1                 receiver2

 

 

In this circumstance,

If R1 pim-sm is disabled, then DUT have to send assert cancel message to Network 2?

 

 

Please let me know.

 

 

Thank you in advance.

Sunyoung, Hwang.

 

 

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