[Sis-csi] No call today

[Scott, Keith L.]

Will,
 
Cool!  So if I understand correctly, two IPv6 routers configured to use
link-local addressing on the 'inter-router' interfaces will work,
regardless of the addresses on other router interfaces?  That makes
sense.  As I recall, the IPv6 neighbor discovery protocol requires
bidirectional exchanges (otherwise how do I know I'm not picking the
same address you did, however unlikely?)
 
I'm a bit confused about the v4 NEMO comment.  You're saying that to
effect a mobile subnet, the v4 NEMO is the only thing supported by
Cisco?  So you use v6 to form the inter-router connectivity and tunnel
v4 NEMO over it?
 
Anyway, I think this is good progress, thanks!
 
        --keith


________________________________

	From: Ivancic, William D. (GRC-RCN0)
[mailto:william.d.ivancic at nasa.gov] 
	Sent: Thursday, December 21, 2006 11:33 AM
	To: Scott, Keith L.; sis-csi at mailman.ccsds.org
	Cc: Mezu, Okechukwu A. (GRC-RCN0)
	Subject: RE: [Sis-csi] No call today
	
	
	Keith,
	 
	FYI,  we need to take a closer look and document the results,
but it looks like IPv6 solves the subnetting and mobility problems as
shown in the C3I interoperability spec notional IPv4 network.  This is
because IPv6 routers between routers using the link-local addressing.
Thus I can put two routers on different global subnets on the same
link-local network and the routers will route using IPv6.  Only if I
use nemo for IPv4 will this work.  Furthermore, one cannot configure an
IPv4 router to have multiple interfaces in the same or overlapping
subnet (at least for Cisco routers).  The router will not even except
the command!  Instead is provides a warning similar to "Hey, you can't
do this!)
	 
	We have only worked with Ethernet links so far.  I want to try
with serial links also.
	 
	Will
	 

	******************************

	William D. Ivancic

	Phone 216-433-3494

	Fax 216-433-8705

	Lab 216-433-2620

	Mobile 440-503-4892

	http://roland.grc.nasa.gov/~ivancic
<http://roland.grc.nasa.gov/~ivancic>  

	 


________________________________

		From: sis-csi-bounces at mailman.ccsds.org
[mailto:sis-csi-bounces at mailman.ccsds.org] On Behalf Of Scott, Keith L.
		Sent: Thursday, December 21, 2006 10:51 AM
		To: sis-csi at mailman.ccsds.org
		Subject: [Sis-csi] No call today
		
		
		If anybody has updates, let's do it by email.  Next
telecon Jan 4.
		 
		 
		Happy Holidays!
		 
		        --keith
		 

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