Re: nhrp-05 - Purge packets

Bruce Cole <bcole@cisco.com> Wed, 01 November 1995 21:14 UTC

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To: gardo@vnet.ibm.com
Cc: bcole@cisco.com, luciani@nexen.com, rolc@nexen.com, asmith@baynetworks.com, genecox@vnet.ibm.com
Subject: Re: nhrp-05 - Purge packets
In-Reply-To: Your message of "Wed, 01 Nov 1995 10:34:20 EST." <199511011541.KAA24899@guelah.nexen.com>
Date: Wed, 01 Nov 1995 12:48:41 -0800
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> >   When a station receives an NHRP Purge request, it MUST discard any
> >   previously cached information that matches the Source Address and
> >   Request ID (when the Request ID is zero filled the match is made
> >   based only on the Source Address).
> 
> There was consensus that this paragraph be included in section 5.4.
[...]
> > >When a station receives an NHRP Purge request, it MUST discard any
> > >previously cached information that matches the Source Address and
> > >Request ID (when the Request ID is zero filled the match is made
> > >based only on the Source Address).
> 
> The last sentence in the above paragraph should say,
> "when the Request ID is zero filled the match is made
> based only on the Destination Address"...
> I believe Andrew has already made this point in an earlier posting.

Yes, that's right, sorry for the oversight.  I've now made both changes.
I also failed to revise the purge packet format to include the source
NBMA address (which is now required due to lack of IP encapsulation).
I will make that change also.

There was an additional change in James's message which I don't currently
have included: eliminating the requirement to acknowledge purge requests.
I am all for this, as I agree with the view that purge packets are an
optimization.  But I didn't see consensus.  Folks?