Re: Routing protocols

From: Pavel Kankovsky (peakat_private)
Date: Tue Sep 02 2003 - 04:39:08 PDT

  • Next message: Michel Arboi: "Re: Routing protocols"

    On Tue, 2 Sep 2003, Michel Arboi wrote:
    
    [about 169.254.0.0/16]
    > Just curious: how do they avoid address clashes? Just rely on chance?
    
    There is a protocol intended to avoid them. See:
    http://files.zeroconf.org/draft-ietf-zeroconf-ipv4-linklocal.txt
    
    > > A nice property of these addresses (in the context of RIP testing) is that
    > > they are not supposed to be routable.
    > 
    > Maybe that could be a second test: if the router accept such address,
    > this means that it is really misconfigured?
    
    I'd say there is a room for improvement if it accepts such a route. :)
    It might be a problem but IMHO, it is irrelevant compared to the fact the
    router accepts unauthenticated route advertisements at all.
    
    > But if there is a loop in the network, there is a risk that the bogus
    > route will go round for a while, no?
    
    Hmm...yes. Idea: give the bogus route the highest possible metric (15
    for RIP) to limit its distribution to other routers.
    
    --Pavel Kankovsky aka Peak  [ Boycott Microsoft--http://www.vcnet.com/bms ]
    "Resistance is futile. Open your source code and prepare for assimilation."
    



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