Clue's for Clue-less

Jim Jagielski jim at jaguNET.com
Mon Oct 26 23:32:33 UTC 1998


Martin, Christian wrote:
> 
> Poor filtering practices.  As filter-lists grow in size and complexity,
> and the AS lists grow, there is the potential for leaks.  All it takes
> is for and inexperienced/tired/clueless operator to turn up a T1 session
> with a multihomed downstream peer, and neglect the filter-list on their
> inbound updates.  Then, considering that any other peer that advertises
> an AS that is two hops away has the same preference configured all the
> way through, we're talking router ID here.  The OC3 session that is
> prefered doesn't see the routes, but they are coming in from other
> places, including the T1.  bgp always-compare-med can help, but not
> everyone uses it.  This can be bad.  
> 

What would be helpful, of course, is a series of FAQs that pretty much
detail various config options for different-type setups. Freeman's
stuff is a start.

-- 
===========================================================================
   Jim Jagielski   |||   jim at jaguNET.com   |||   http://www.jaguNET.com/
            "That's no ordinary rabbit... that's the most foul,
            cruel and bad-tempered rodent you ever laid eyes on"



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