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Re: [Anima] GRASP ALL_GRASP_NEIGHBORS

Brian E Carpenter <brian.e.carpenter@gmail.com> Mon, 27 April 2020 23:24 UTC

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To: "Joel M. Halpern" <jmh@joelhalpern.com>, Michael Richardson <mcr+ietf@sandelman.ca>
Cc: anima@ietf.org
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From: Brian E Carpenter <brian.e.carpenter@gmail.com>
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Date: Tue, 28 Apr 2020 11:24:19 +1200
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Subject: Re: [Anima] GRASP ALL_GRASP_NEIGHBORS
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I think we don't care, because GRASP traffic density should be quite modest so load balancing isn't really an issue. In response to Michael, I don't think the source port matters at all for M_FLOOD messages. My code uses the o/s default, but it has no significance to the recipient.

Regards
   Brian

On 28-Apr-20 10:22, Joel M. Halpern wrote:
> I suspect that for most GRASP purposes, even if there is a layer 2 
> network between the parties,  we are not much worried about how LAG 
> handles GRASP packets?   If we care about that, then the source port 
> should be randomized between flows, and stable for sequences of related 
> messages.
> 
> Yours,
> Joel
> 
> On 4/27/2020 6:14 PM, Michael Richardson wrote:
>>
>> Brian E Carpenter <brian.e.carpenter@gmail.com> wrote:
>>      > No, that normally gets resolved when they actually start editing, but
>>      > yes of course it's on my checklist.
>>
>>      > I'm quite sure the early aassignments were announced on the list, but
>>      > when I forget what values were pre-assigned I just go and look at my
>>      > code:
>>
>> I thought that early allocations were supposed to go into the document so
>> they don't get assigned twice by mistake.
>>
>>      > ALL_GRASP_NEIGHBORS_6 = ipaddress.IPv6Address('ff02::13')   # LL multicast
>>      > ALL_GRASP_NEIGHBORS_4 = ipaddress.IPv4Address('224.0.0.119') # LL multicast
>>      > GRASP_LISTEN_PORT = 7017 # IANA port number
>>
>> Thank you.
>>
>> Is there any reason why the source port (for DULL, and normal) can't be port 7017 as well?
>> It clearly could be any port...
>>
>> --
>> Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
>>   -= IPv6 IoT consulting =-
>>
>>
>>
>>
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