key change for TCP-MD5

Tue Jun 20 19:56:36 UTC 2006

>>> On 6/20/2006 at 12:33 PM, Iljitsch van Beijnum <iljitsch at muada.com> wrote:

> On 20-jun-2006, at 21:23, Randy Bush wrote:
> 
>>> What if we agree to change the key on our BGP session, I add the new
>>> key on my side and start sending packets using the new key, while you
>>> don't have the new key in your configuration yet?
> 
>> again: try reading the draft
> 
> I've read the draft and it "solves" this problem with timing. That's  
> insufficient because it requires that both sides do the right thing  
> at the right time without any way to verify whether the other side is  
> ready. What if one side didn't make the change, or entered the wrong  
> key?

Uh, isn't what this,

   "In particular, if a key change has just been
   attempted but such segments are not acknowledged, it is reasonable to
   fall back to the previous key and issue an alert of some sort."

Is for? Automated fallback if a new key doesn't work?
-- 

Crist J. Clark                               crist.clark at globalstar.com
Globalstar Communications                                (408) 933-4387

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