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Cell Relay Retreat>List Archive>month:1996-May> msg00195



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TTL decremening (was Re: My personal take on cell switching routers)

  • From: Grenville Armitage <gja@bellcore.com>
  • Date: Fri, 31 May 1996 09:32:23 -0400
  • cc: gja@bellcore.com, malis@nexen.com, ion@nexen.com

Frank,

Thanks for the response, but I think I clouded my question with
my convoluted wording..

>> > 
>> > What's the problem with nodes not decrementing TTLs, given that
>> > (as far as I can tell) the same end to end effect will be the
>> > result...

	[..the bit after the 'given that...' was important in my
	 original post.]
>>
>>Tools like Traceroute and multicast-scoping implicitly rely on specifc
>>TTLs and actions to occur based on those TTLs.
	[..]
>>fragmenting bridges (aka extruders) and stuff like that. I guess we
>>have a new generation of networkers so we have to revisit all those
>>old discussions...

My question was intended to be comparative, viz. the difference between
a CSR's lack of TTL decrementing and NHRP's equivalent inability to
decrement TTL. Seems if the problem is a non-problem for one approach
it is also a non-problem for the other. Or vice-versa.

cheers,
gja
_________________________________________________________________________
Grenville Armitage           http://gump.bellcore.com:8000/~gja/home.html
On the Internet, I AM a dog.