Subject: [Isis-wg] doubt regarding acknowledgement on broadcast circuits

From: Aravind Ravikumar <[email-masked]>
Date: Mon, 18 Feb 2002 06:11:13 -0800 (PST)

Hi All,

According to the section 7.3.16.4 (LSP expiration synchronisation) of ISO 10589
we have to send an acknowledgement even on broadcast circuit in the following case:

If an LSP from source S with zero Remaining Lifetime is received
on circuit C :
a) If no LSP from S is in memory, then the IS shall
1) send an acknowledgement of the LSP on circuit C, but
2) shall not retain the LSP after the acknowledgement has been sent.

But I am not clear about the purpose of sending acknowldgement on a broadcast 
circuit. Because the transmitter of the LSP is not waiting for any acknowledgement 
and would have already reset its SRM flag for that particular circuit.

Am I right or wrong, please help me. 

Thanks in advance.

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