[148022] in North American Network Operators' Group

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Re: Misconceptions, was: IPv6 RA vs DHCPv6 - The chosen one?

daemon@ATHENA.MIT.EDU (Jeff Kell)
Thu Dec 29 21:01:01 2011

Date: Thu, 29 Dec 2011 21:00:01 -0500
From: Jeff Kell <jeff-kell@utc.edu>
To: Mark Andrews <marka@isc.org>
In-Reply-To: <20111230011243.2BC201ABB7F7@drugs.dv.isc.org>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

On 12/29/2011 8:12 PM, Mark Andrews wrote:
> Well I'd like to be able to plug in the cable router and the DSL
> router at home and have it all just work.

Well, that's not too far removed from the plugged-in laptop with the
wireless still active.  Toss-up which one wins default route.

What would you "like" it to do?  BGP feeds from both (likely not
happening)?  Defaults from both?  Or you just want active/passive failover?

The real-world case for host routing (IMHO) is a server with a public
interface, an administrative interface, and possibly a third path for
data backups (maybe four if it's VMware/VMotion too).  Unless the
non-public interfaces are flat subnets, you need some statics (today). 
It can be a challenge to get SysAdmins in a co-operative mindset to
route that correctly (and repetitively if you have a server farm).

I would be walking the fence on the virtues of automatic route discovery
in that case versus the security of static routes/configurations. 

But home use from a host perspective? 

Jeff


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