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[trill] seeking help to understand a line from TRILL-ESADI draft

Swet kumar <swet.kumar@ipinfusion.com> Tue, 17 July 2012 09:58 UTC

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From: Swet kumar <swet.kumar@ipinfusion.com>
To: "trill@ietf.org" <trill@ietf.org>
Thread-Topic: seeking help to understand a line from TRILL-ESADI draft
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Date: Tue, 17 Jul 2012 09:59:34 +0000
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Subject: [trill] seeking help to understand a line from TRILL-ESADI draft
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Hi Authors,

I am not able to understand the meaning of the following line in this draft: http://tools.ietf.org/pdf/draft-ietf-trill-esadi-00.pdf

"For robustness, if an ESADI instance has two or more ESADI neighbors
   and is not DRB and it receives no ESADI-CSNP PDUs for at least the
   CSNP Time (see Section 6.1) of the DRB, it MAY transmit an ESADI-
   CSNP."

This line is a part of section 4.1 (Sending of ESADI PDUs) on page number 12.
Please explain me what this line tries to convey.

Regards,
Swet

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