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RE: Comments on draft-yourtchenko-colitti-nd-reduce-multicast

"Hemant Singh (shemant)" <shemant@cisco.com> Fri, 21 February 2014 23:22 UTC

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From: "Hemant Singh (shemant)" <shemant@cisco.com>
To: "Andrew Yourtchenko (ayourtch)" <ayourtch@cisco.com>
Subject: RE: Comments on draft-yourtchenko-colitti-nd-reduce-multicast
Thread-Topic: Comments on draft-yourtchenko-colitti-nd-reduce-multicast
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Date: Fri, 21 Feb 2014 23:22:31 +0000
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References: <5305AF13.5060201@acm.org> <75B6FA9F576969419E42BECB86CB1B89115F99A9@xmb-rcd-x06.cisco.com> <alpine.OSX.2.00.1402211620560.49053@ayourtch-mac> <75B6FA9F576969419E42BECB86CB1B89115F9BAE@xmb-rcd-x06.cisco.com> <alpine.OSX.2.00.1402212129450.52880@ayourtch-mac>
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Cc: Erik Nordmark <nordmark@acm.org>, IETF IPv6 <ipv6@ietf.org>
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Andrew,

-----Original Message-----
From: Andrew Yourtchenko (ayourtch) 
Sent: Friday, February 21, 2014 3:37 PM
To: Hemant Singh (shemant)
Cc: Erik Nordmark; IETF IPv6; Lorenzo Colitti
Subject: RE: Comments on draft-yourtchenko-colitti-nd-reduce-multicast


>Were they 802.11 clients ? 

No.  Sorry to not clarify that in my earlier email.  I have tested 40K broadband modems (some modem were from a virtual modem generator) on a service provider cable router in my lab. 

>Wireless medium does have different properties.

Agreed. 

Did you make any "flash failure" events ?

I thought a reload of a cable router and then getting modems online would be good to measure a failure though the failure may not be what you want and once I understand flash failure, I can reply further, if need be.    For service provider routers, I'd think a flash failure is the route processor card crashed but being a service provider router, the router moves over to the standby route processer card and thus this box won't simulate a flash failure if I understand flash failure correctly.  The switchover takes a few seconds for a service provider router.  

Wow, thanks for the detailed reply in rest of your email.  Once I get a chance to read that portion of your email, I will reply.

Thanks much,

Hemant

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